1
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Jain S, Uritskiy G, Mahalingam M, Batra H, Chand S, Trinh HV, Beck C, Shin WH, Alsalmi W, Kijak G, Eller LA, Kim J, Kihara D, Tovanabutra S, Ferrari G, Robb ML, Rao M, Rao VB. A remarkable genetic shift in a transmitted/founder virus broadens antibody responses against HIV-1. eLife 2024; 13:RP92379. [PMID: 38619110 PMCID: PMC11018346 DOI: 10.7554/elife.92379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024] Open
Abstract
A productive HIV-1 infection in humans is often established by transmission and propagation of a single transmitted/founder (T/F) virus, which then evolves into a complex mixture of variants during the lifetime of infection. An effective HIV-1 vaccine should elicit broad immune responses in order to block the entry of diverse T/F viruses. Currently, no such vaccine exists. An in-depth study of escape variants emerging under host immune pressure during very early stages of infection might provide insights into such a HIV-1 vaccine design. Here, in a rare longitudinal study involving HIV-1 infected individuals just days after infection in the absence of antiretroviral therapy, we discovered a remarkable genetic shift that resulted in near complete disappearance of the original T/F virus and appearance of a variant with H173Y mutation in the variable V2 domain of the HIV-1 envelope protein. This coincided with the disappearance of the first wave of strictly H173-specific antibodies and emergence of a second wave of Y173-specific antibodies with increased breadth. Structural analyses indicated conformational dynamism of the envelope protein which likely allowed selection of escape variants with a conformational switch in the V2 domain from an α-helix (H173) to a β-strand (Y173) and induction of broadly reactive antibody responses. This differential breadth due to a single mutational change was also recapitulated in a mouse model. Rationally designed combinatorial libraries containing 54 conformational variants of V2 domain around position 173 further demonstrated increased breadth of antibody responses elicited to diverse HIV-1 envelope proteins. These results offer new insights into designing broadly effective HIV-1 vaccines.
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Affiliation(s)
- Swati Jain
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
| | - Gherman Uritskiy
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
| | - Marthandan Mahalingam
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
| | - Himanshu Batra
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
| | - Subhash Chand
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
| | - Hung V Trinh
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaUnited States
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of ResearchSilver SpringUnited States
| | - Charles Beck
- Department of Molecular Genetics and Microbiology, Duke UniversityDurhamUnited States
| | - Woong-Hee Shin
- Department of Biological Sciences, Purdue UniversityWest LafayetteUnited States
- Department of Chemistry Education, Sunchon National UniversitySuncheonRepublic of Korea
- Department of Advanced Components and Materials Engineering, Sunchon National UniversitySuncheonRepublic of Korea
| | - Wadad Alsalmi
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
| | - Gustavo Kijak
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaUnited States
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of ResearchSilver SpringUnited States
| | - Leigh A Eller
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaUnited States
| | - Jerome Kim
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of ResearchSilver SpringUnited States
| | - Daisuke Kihara
- Department of Biological Sciences, Purdue UniversityWest LafayetteUnited States
- Department of Computer Science, Purdue UniversityWest LafayetteUnited States
| | - Sodsai Tovanabutra
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaUnited States
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of ResearchSilver SpringUnited States
| | - Guido Ferrari
- Department of Molecular Genetics and Microbiology, Duke UniversityDurhamUnited States
| | - Merlin L Robb
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaUnited States
| | - Mangala Rao
- Laboratory of Adjuvant and Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of ResearchSilver SpringUnited States
| | - Venigalla B Rao
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of AmericaWashingtonUnited States
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2
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Kaur A, Vaccari M. Exploring HIV Vaccine Progress in the Pre-Clinical and Clinical Setting: From History to Future Prospects. Viruses 2024; 16:368. [PMID: 38543734 PMCID: PMC10974975 DOI: 10.3390/v16030368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/08/2024] [Accepted: 02/21/2024] [Indexed: 04/01/2024] Open
Abstract
The human immunodeficiency virus (HIV) continues to pose a significant global health challenge, with millions of people affected and new cases emerging each year. While various treatment and prevention methods exist, including antiretroviral therapy and non-vaccine approaches, developing an effective vaccine remains the most crucial and cost-effective solution to combating the HIV epidemic. Despite significant advancements in HIV research, the HIV vaccine field has faced numerous challenges, and only one clinical trial has demonstrated a modest level of efficacy. This review delves into the history of HIV vaccines and the current efforts in HIV prevention, emphasizing pre-clinical vaccine development using the non-human primate model (NHP) of HIV infection. NHP models offer valuable insights into potential preventive strategies for combating HIV, and they play a vital role in informing and guiding the development of novel vaccine candidates before they can proceed to human clinical trials.
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Affiliation(s)
- Amitinder Kaur
- Division of Immunology, Tulane National Primate Research Center, Covington, LA 70433, USA;
- School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Monica Vaccari
- Division of Immunology, Tulane National Primate Research Center, Covington, LA 70433, USA;
- School of Medicine, Tulane University, New Orleans, LA 70112, USA
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3
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Tuyishime M, Spreng RL, Hueber B, Nohara J, Goodman D, Chan C, Barfield R, Beck WE, Jha S, Asdell S, Wiehe K, He MM, Easterhoff D, Conley HE, Hoxie T, Gurley T, Jones C, Adhikary ND, Villinger F, Thomas R, Denny TN, Moody MA, Tomaras GD, Pollara J, Reeves RK, Ferrari G. Multivariate analysis of FcR-mediated NK cell functions identifies unique clustering among humans and rhesus macaques. Front Immunol 2023; 14:1260377. [PMID: 38124734 PMCID: PMC10732150 DOI: 10.3389/fimmu.2023.1260377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/04/2023] [Indexed: 12/23/2023] Open
Abstract
Rhesus macaques (RMs) are a common pre-clinical model used to test HIV vaccine efficacy and passive immunization strategies. Yet, it remains unclear to what extent the Fc-Fc receptor (FcR) interactions impacting antiviral activities of antibodies in RMs recapitulate those in humans. Here, we evaluated the FcR-related functionality of natural killer cells (NKs) from peripheral blood of uninfected humans and RMs to identify intra- and inter-species variation. NKs were screened for FcγRIIIa (human) and FcγRIII (RM) genotypes (FcγRIII(a)), receptor signaling, and antibody-dependent cellular cytotoxicity (ADCC), the latter mediated by a cocktail of monoclonal IgG1 antibodies with human or RM Fc. FcγRIII(a) genetic polymorphisms alone did not explain differences in NK effector functionality in either species cohort. Using the same parameters, hierarchical clustering separated each species into two clusters. Importantly, in principal components analyses, ADCC magnitude, NK contribution to ADCC, FcγRIII(a) cell-surface expression, and frequency of phosphorylated CD3ζ NK cells all contributed similarly to the first principal component within each species, demonstrating the importance of measuring multiple facets of NK cell function. Although ADCC potency was similar between species, we detected significant differences in frequencies of NK cells and pCD3ζ+ cells, level of cell-surface FcγRIII(a) expression, and NK-mediated ADCC (P<0.001), indicating that a combination of Fc-FcR parameters contribute to overall inter-species functional differences. These data strongly support the importance of multi-parameter analyses of Fc-FcR NK-mediated functions when evaluating efficacy of passive and active immunizations in pre- and clinical trials and identifying correlates of protection. The results also suggest that pre-screening animals for multiple FcR-mediated NK function would ensure even distribution of animals among treatment groups in future preclinical trials.
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Affiliation(s)
- Marina Tuyishime
- Department of Surgery, Duke University, Durham, NC, United States
| | - Rachel L. Spreng
- Duke Human Vaccine Institute, Durham, NC, United States
- Center for Human Systems Immunology, Durham, NC, United States
| | - Brady Hueber
- Center for Human Systems Immunology, Durham, NC, United States
| | - Junsuke Nohara
- Department of Surgery, Duke University, Durham, NC, United States
| | - Derrick Goodman
- Department of Surgery, Duke University, Durham, NC, United States
- Center for Human Systems Immunology, Durham, NC, United States
| | - Cliburn Chan
- Center for Human Systems Immunology, Durham, NC, United States
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, United States
| | - Richard Barfield
- Center for Human Systems Immunology, Durham, NC, United States
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, United States
| | - Whitney E. Beck
- Department of Surgery, Duke University, Durham, NC, United States
| | - Shalini Jha
- Department of Surgery, Duke University, Durham, NC, United States
| | - Stephanie Asdell
- Department of Surgery, Duke University, Durham, NC, United States
| | - Kevin Wiehe
- Duke Human Vaccine Institute, Durham, NC, United States
- Department of Medicine, Duke University, Durham, NC, United States
| | - Max M. He
- Duke Human Vaccine Institute, Durham, NC, United States
| | | | | | - Taylor Hoxie
- Duke Human Vaccine Institute, Durham, NC, United States
| | | | | | - Nihar Deb Adhikary
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, United States
| | - Francois Villinger
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, United States
| | - Rasmi Thomas
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Thomas N. Denny
- Duke Human Vaccine Institute, Durham, NC, United States
- Department of Medicine, Duke University, Durham, NC, United States
| | - Michael Anthony Moody
- Duke Human Vaccine Institute, Durham, NC, United States
- Department of Pediatrics, Duke University, Durham, NC, United States
- Department of Integrative Immunobiology, Duke University, Durham, NC, United States
| | - Georgia D. Tomaras
- Department of Surgery, Duke University, Durham, NC, United States
- Duke Human Vaccine Institute, Durham, NC, United States
- Center for Human Systems Immunology, Durham, NC, United States
- Department of Integrative Immunobiology, Duke University, Durham, NC, United States
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, United States
| | - Justin Pollara
- Department of Surgery, Duke University, Durham, NC, United States
- Duke Human Vaccine Institute, Durham, NC, United States
- Center for Human Systems Immunology, Durham, NC, United States
| | - R. Keith Reeves
- Department of Surgery, Duke University, Durham, NC, United States
- Center for Human Systems Immunology, Durham, NC, United States
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Guido Ferrari
- Department of Surgery, Duke University, Durham, NC, United States
- Duke Human Vaccine Institute, Durham, NC, United States
- Center for Human Systems Immunology, Durham, NC, United States
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4
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Williams LD, Shen X, Sawant SS, Akapirat S, Dahora LC, Tay MZ, Stanfield-Oakley S, Wills S, Goodman D, Tenney D, Spreng RL, Zhang L, Yates NL, Montefiori DC, Eller MA, Easterhoff D, Hope TJ, Rerks-Ngarm S, Pittisuttithum P, Nitayaphan S, Excler JL, Kim JH, Michael NL, Robb ML, O’Connell RJ, Karasavvas N, Vasan S, Ferrari G, Tomaras GD. Viral vector delivered immunogen focuses HIV-1 antibody specificity and increases durability of the circulating antibody recall response. PLoS Pathog 2023; 19:e1011359. [PMID: 37256916 PMCID: PMC10284421 DOI: 10.1371/journal.ppat.1011359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 06/21/2023] [Accepted: 04/14/2023] [Indexed: 06/02/2023] Open
Abstract
The modestly efficacious HIV-1 vaccine regimen (RV144) conferred 31% vaccine efficacy at 3 years following the four-shot immunization series, coupled with rapid waning of putative immune correlates of decreased infection risk. New strategies to increase magnitude and durability of protective immunity are critically needed. The RV305 HIV-1 clinical trial evaluated the immunological impact of a follow-up boost of HIV-1-uninfected RV144 recipients after 6-8 years with RV144 immunogens (ALVAC-HIV alone, AIDSVAX B/E gp120 alone, or ALVAC-HIV + AIDSVAX B/E gp120). Previous reports demonstrated that this regimen elicited higher binding, antibody Fc function, and cellular responses than the primary RV144 regimen. However, the impact of the canarypox viral vector in driving antibody specificity, breadth, durability and function is unknown. We performed a follow-up analysis of humoral responses elicited in RV305 to determine the impact of the different booster immunogens on HIV-1 epitope specificity, antibody subclass, isotype, and Fc effector functions. Importantly, we observed that the ALVAC vaccine component directly contributed to improved breadth, function, and durability of vaccine-elicited antibody responses. Extended boosts in RV305 increased circulating antibody concentration and coverage of heterologous HIV-1 strains by V1V2-specific antibodies above estimated protective levels observed in RV144. Antibody Fc effector functions, specifically antibody-dependent cellular cytotoxicity and phagocytosis, were boosted to higher levels than was achieved in RV144. V1V2 Env IgG3, a correlate of lower HIV-1 risk, was not increased; plasma Env IgA (specifically IgA1), a correlate of increased HIV-1 risk, was elevated. The quality of the circulating polyclonal antibody response changed with each booster immunization. Remarkably, the ALVAC-HIV booster immunogen induced antibody responses post-second boost, indicating that the viral vector immunogen can be utilized to selectively enhance immune correlates of decreased HIV-1 risk. These results reveal a complex dynamic of HIV-1 immunity post-vaccination that may require careful balancing to achieve protective immunity in the vaccinated population. Trial registration: RV305 clinical trial (ClinicalTrials.gov number, NCT01435135). ClinicalTrials.gov Identifier: NCT00223080.
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Affiliation(s)
- LaTonya D. Williams
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Xiaoying Shen
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Sheetal S. Sawant
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Siriwat Akapirat
- Department of Retrovirology, US Army Medical Directorate, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Lindsay C. Dahora
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Matthew Zirui Tay
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Molecular Genetics Microbiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Sherry Stanfield-Oakley
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Saintedym Wills
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Derrick Goodman
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - DeAnna Tenney
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Rachel L. Spreng
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Lu Zhang
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Nicole L. Yates
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - David C. Montefiori
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Michael A. Eller
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, United States of America
| | - David Easterhoff
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Thomas J. Hope
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | | | - Punnee Pittisuttithum
- Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Sorachai Nitayaphan
- Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Jean-Louis Excler
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Jerome H. Kim
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Nelson L. Michael
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
| | - Merlin L. Robb
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, United States of America
| | - Robert J. O’Connell
- Department of Retrovirology, US Army Medical Directorate, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Nicos Karasavvas
- Department of Retrovirology, US Army Medical Directorate, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Sandhya Vasan
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, United States of America
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, United States of America
| | - Guido Ferrari
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Molecular Genetics Microbiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Georgia D. Tomaras
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Molecular Genetics Microbiology, Duke University School of Medicine, Durham, North Carolina, United States of America
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5
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Wilson GJ, Rodriguez B, Li SS, Allen M, Frank I, Rudnicki E, Trahey M, Kalams S, Hannaman D, Clarke DK, Xu R, Egan M, Eldridge J, Pensiero M, Latham T, Ferrari G, Montefiori DC, Tomaras GD, De Rosa SC, Jacobson JM, Miner MD, Elizaga M. Cellular and humoral responses to an HIV DNA prime by electroporation boosted with recombinant vesicular stomatitis virus expressing HIV subtype C Env in a randomized controlled clinical trial. Vaccine 2023; 41:2696-2706. [PMID: 36935288 PMCID: PMC10102555 DOI: 10.1016/j.vaccine.2023.03.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023]
Abstract
BACKGROUND HIV subtypes B and C together account for around 60% of HIV-1 cases worldwide. We evaluated the safety and immunogenicity of a subtype B DNA vaccine prime followed by a subtype C viral vector boost. METHODS Fourteen healthy adults received DNA plasmid encoding HIV-1 subtype B nef/tat/vif and env (n = 11) or placebo (n = 3) intramuscularly (IM) via electroporation (EP) at 0, 1, and 3 months, followed by IM injection of recombinant vesicular stomatitis virus encoding subtype C Env or placebo at 6 and 9 months. Participants were assessed for safety, tolerability of EP, and Env-specific T-cell and antibody responses. RESULTS EP was generally well tolerated, although some device-related adverse events did occur, and vaccine reactogenicity was mild to moderate. The vaccine stimulated Env-specific CD4 + T-cell responses in greater than 80% of recipients, and CD8 + T-cell responses in 30%. Subtype C Env-specific IgG binding antibodies (bAb) were elicited in all vaccine recipients, and antibody-dependent cell-mediated cytotoxicity (ADCC) responses to vaccine-matched subtype C targets in 80%. Negligible V1/V2 and neutralizing antibody (nAb) responses were detected. CONCLUSIONS This prime/boost regimen was safe and tolerable, with some device-related events, and immunogenic. Although immunogenicity missed targets for an HIV vaccine, the DNA/rVSV platform may be useful for other applications. TRIAL REGISTRATION CLINICALTRIALS gov: NCT02654080.
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Affiliation(s)
- Gregory J Wilson
- Vanderbilt University Medical Center, Nashville, TN, United States
| | | | - Shuying Sue Li
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | - Mary Allen
- DAIDS/NIAID/NIH, Rockville, MD, United States
| | - Ian Frank
- University of Pennsylvania, Philadelphia, PA, United States
| | - Erika Rudnicki
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | - Meg Trahey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | - Spyros Kalams
- Vanderbilt University Medical Center, Nashville, TN, United States
| | | | - David K Clarke
- Auro Vaccines LLC (formerly Profectus Biosciences, Inc.), Pearl River, NY, United States
| | - Rong Xu
- Auro Vaccines LLC (formerly Profectus Biosciences, Inc.), Pearl River, NY, United States
| | - Michael Egan
- Auro Vaccines LLC (formerly Profectus Biosciences, Inc.), Pearl River, NY, United States
| | - John Eldridge
- Auro Vaccines LLC (formerly Profectus Biosciences, Inc.), Pearl River, NY, United States
| | | | - Theresa Latham
- Auro Vaccines LLC (formerly Profectus Biosciences, Inc.), Pearl River, NY, United States
| | - Guido Ferrari
- Department of Surgery, Duke University, Durham, NC, United States
| | | | | | - Stephen C De Rosa
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | | | - Maurine D Miner
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | - Marnie Elizaga
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
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6
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Hora B, Li H, Shen X, Martin M, Chen Y, Berry M, Evangelous T, Macintyre AN, Arus-Altuz A, Wang S, Singh A, Zhao C, De Naeyer N, DeMarco T, Kuykendall C, Gurley T, Saunders KO, Denny T, Moody MA, Misamore J, Lewis MG, Wiehe K, Cain DW, Montefiori DC, Shaw GM, Williams WB. Neonatal SHIV infection in rhesus macaques elicited heterologous HIV-1-neutralizing antibodies. Cell Rep 2023; 42:112255. [PMID: 36924501 PMCID: PMC10117998 DOI: 10.1016/j.celrep.2023.112255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/21/2022] [Accepted: 02/28/2023] [Indexed: 03/17/2023] Open
Abstract
Infants and children infected with human immunodeficiency virus (HIV)-1 have been shown to develop neutralizing antibodies (nAbs) against heterologous HIV-1 strains, characteristic of broadly nAbs (bnAbs). Thus, having a neonatal model for the induction of heterologous HIV-1 nAbs may provide insights into the mechanisms of neonatal bnAb development. Here, we describe a neonatal model for heterologous HIV-1 nAb induction in pathogenic simian-HIV (SHIV)-infected rhesus macaques (RMs). Viral envelope (env) evolution showed mutations at multiple sites, including nAb epitopes. All 13 RMs generated plasma autologous HIV-1 nAbs. However, 8/13 (62%) RMs generated heterologous HIV-1 nAbs with increasing potency over time, albeit with limited breadth, and mapped to multiple nAb epitopes, suggestive of a polyclonal response. Moreover, plasma heterologous HIV-1 nAb development was associated with antigen-specific, lymph-node-derived germinal center activity. We define a neonatal model for heterologous HIV-1 nAb induction that may inform future pediatric HIV-1 vaccines for bnAb induction in infants and children.
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Affiliation(s)
- Bhavna Hora
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Hui Li
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Xiaoying Shen
- Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - Mitchell Martin
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Yue Chen
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Madison Berry
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Tyler Evangelous
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Andrew N Macintyre
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA
| | - Aria Arus-Altuz
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Shuyi Wang
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ajay Singh
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Chengyan Zhao
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nicole De Naeyer
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Todd DeMarco
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Cindy Kuykendall
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Thaddeus Gurley
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Kevin O Saunders
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA; Department of Immunology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Thomas Denny
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA
| | - M Anthony Moody
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Pediatrics, Duke University School of Medicine, Durham, NC 27710, USA
| | | | | | - Kevin Wiehe
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA
| | - Derek W Cain
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA
| | - David C Montefiori
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - George M Shaw
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Wilton B Williams
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA; Department of Immunology, Duke University School of Medicine, Durham, NC 27710, USA.
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7
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Moyo-Gwete T, Scheepers C, Makhado Z, Kgagudi P, Mzindle NB, Ziki R, Madzorera S, Manamela NP, Ayres F, Lambson BE, Richardson SI, Morris L, Moore PL. Enhanced neutralization potency of an identical HIV neutralizing antibody expressed as different isotypes is achieved through genetically distinct mechanisms. Sci Rep 2022; 12:16473. [PMID: 36182959 PMCID: PMC9526727 DOI: 10.1038/s41598-022-20141-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 09/09/2022] [Indexed: 11/25/2022] Open
Abstract
Antibodies with the same variable region can exist as multiple isotypes with varying neutralization potencies, though the mechanism for this is not fully defined. We previously isolated an HIV-directed IgA1 monoclonal antibody (mAb), CAP88-CH06, and showed that IgA1 and IgG3 isotypes of this antibody demonstrated enhanced neutralization compared to IgG1. To explore the mechanism behind this, hinge region and constant heavy chain (CH1) chimeras were constructed between the IgA1, IgG3 and IgG1 mAbs and assessed for neutralization activity, antibody-dependent cellular phagocytosis (ADCP) and antibody-dependent cellular cytotoxicity (ADCC). Hinge chimeras revealed that the increased neutralization potency and phagocytosis of the IgG3 isotype was attributed to its longer hinge region. In contrast, for IgA1, CH1 chimeras showed that this region was responsible both for enhanced neutralization potency and decreased ADCP, though ADCC was not affected. Overall, these data show that the enhanced neutralization potency of CAP88-CH06 IgG3 and IgA1, compared to IgG1, is achieved through distinct mechanisms. Understanding the influence of the hinge and CH1 regions on Fab domain function may provide insights into the engineering of therapeutic antibodies with increased neutralization potency.
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Affiliation(s)
- Thandeka Moyo-Gwete
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Cathrine Scheepers
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Zanele Makhado
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Prudence Kgagudi
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Nonkululeko B Mzindle
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Rutendo Ziki
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Sharon Madzorera
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Nelia P Manamela
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Frances Ayres
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Bronwen E Lambson
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Simone I Richardson
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Lynn Morris
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa.,Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
| | - Penny L Moore
- Centre for HIV and STIs, National Institute for Communicable Diseases (NICD) of the National Health Laboratory Service (NHLS), Johannesburg, South Africa. .,SA MRC Antibody Immunity Research Unit, University of the Witwatersrand, Johannesburg, South Africa. .,Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa. .,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
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8
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Tolbert WD, Gohain N, Kremer PG, Hederman AP, Nguyen DN, Van V, Sherburn R, Lewis GK, Finzi A, Pollara J, Ackerman ME, Barb AW, Pazgier M. Decoding human-macaque interspecies differences in Fc-effector functions: The structural basis for CD16-dependent effector function in Rhesus macaques. Front Immunol 2022; 13:960411. [PMID: 36131913 PMCID: PMC9484259 DOI: 10.3389/fimmu.2022.960411] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/26/2022] [Indexed: 01/27/2023] Open
Abstract
Fc mediated effector functions of antibodies play important roles in immunotherapies and vaccine efficacy but assessing those functions in animal models can be challenging due to species differences. Rhesus macaques, Macaca mulatta (Mm) share approximately 93% sequence identity with humans but display important differences in their adaptive immune system that complicates their use in validating therapeutics and vaccines that rely on Fc effector functions. In contrast to humans, macaques only have one low affinity FcγRIII receptor, CD16, which shares a polymorphism at position 158 with human FcγRIIIa with Ile158 and Val158 variants. Here we describe structure-function relationships of the Ile/Val158 polymorphism in Mm FcγRIII. Our data indicate that the affinity of the allelic variants of Mm FcγRIII for the macaque IgG subclasses vary greatly with changes in glycan composition both on the Fc and the receptor. However, unlike the human Phe/Val158 polymorphism in FcγRIIIa, the higher affinity variant corresponds to the larger, more hydrophobic side chain, Ile, even though it is not directly involved in the binding interface. Instead, this side chain appears to modulate glycan-glycan interactions at the Fc/FcγRIII interface. Furthermore, changes in glycan composition on the receptor have a greater effect for the Val158 variant such that with oligomannose type glycans and with glycans only on Asn45 and Asn162, Val158 becomes the variant with higher affinity to Fc. These results have implications not only for the better interpretation of nonhuman primate studies but also for studies performed with human effector cells carrying different FcγRIIIa alleles.
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Affiliation(s)
- William D. Tolbert
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Neelakshi Gohain
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Paul G. Kremer
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, United States
| | - Andrew P. Hederman
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Dung N. Nguyen
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Verna Van
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Rebekah Sherburn
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - George K. Lewis
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Andrés Finzi
- Centre de recherche du CHUM, Montreal, QC, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC, Canada
| | - Justin Pollara
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States
- Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | | | - Adam W. Barb
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, United States
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, United States
- Department of Chemistry, University of Georgia, Athens, GA, United States
| | - Marzena Pazgier
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
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9
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Gilbert PB, Huang Y, deCamp AC, Karuna S, Zhang Y, Magaret CA, Giorgi EE, Korber B, Edlefsen PT, Rossenkhan R, Juraska M, Rudnicki E, Kochar N, Huang Y, Carpp LN, Barouch DH, Mkhize NN, Hermanus T, Kgagudi P, Bekker V, Kaldine H, Mapengo RE, Eaton A, Domin E, West C, Feng W, Tang H, Seaton KE, Heptinstall J, Brackett C, Chiong K, Tomaras GD, Andrew P, Mayer BT, Reeves DB, Sobieszczyk ME, Garrett N, Sanchez J, Gay C, Makhema J, Williamson C, Mullins JI, Hural J, Cohen MS, Corey L, Montefiori DC, Morris L. Neutralization titer biomarker for antibody-mediated prevention of HIV-1 acquisition. Nat Med 2022; 28:1924-1932. [PMID: 35995954 PMCID: PMC9499869 DOI: 10.1038/s41591-022-01953-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 07/14/2022] [Indexed: 01/28/2023]
Abstract
The Antibody Mediated Prevention trials showed that the broadly neutralizing antibody (bnAb) VRC01 prevented acquisition of human immunodeficiency virus-1 (HIV-1) sensitive to VRC01. Using AMP trial data, here we show that the predicted serum neutralization 80% inhibitory dilution titer (PT80) biomarker-which quantifies the neutralization potency of antibodies in an individual's serum against an HIV-1 isolate-can be used to predict HIV-1 prevention efficacy. Similar to the results of nonhuman primate studies, an average PT80 of 200 (meaning a bnAb concentration 200-fold higher than that required to reduce infection by 80% in vitro) against a population of probable exposing viruses was estimated to be required for 90% prevention efficacy against acquisition of these viruses. Based on this result, we suggest that the goal of sustained PT80 <200 against 90% of circulating viruses can be achieved by promising bnAb regimens engineered for long half-lives. We propose the PT80 biomarker as a surrogate endpoint for evaluatinon of bnAb regimens, and as a tool for benchmarking candidate bnAb-inducing vaccines.
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Affiliation(s)
- Peter B. Gilbert
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA ,grid.34477.330000000122986657Department of Biostatistics, University of Washington, Seattle, WA USA
| | - Yunda Huang
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA ,grid.34477.330000000122986657Department of Global Health, University of Washington, Seattle, WA USA
| | - Allan C. deCamp
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Shelly Karuna
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Yuanyuan Zhang
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Craig A. Magaret
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Elena E. Giorgi
- grid.148313.c0000 0004 0428 3079Los Alamos National Laboratory, Los Alamos, NM USA ,grid.270240.30000 0001 2180 1622Present Address: Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Bette Korber
- grid.148313.c0000 0004 0428 3079Los Alamos National Laboratory, Los Alamos, NM USA
| | - Paul T. Edlefsen
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Raabya Rossenkhan
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Michal Juraska
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Erika Rudnicki
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Nidhi Kochar
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Ying Huang
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Lindsay N. Carpp
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Dan H. Barouch
- grid.239395.70000 0000 9011 8547Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA USA ,grid.32224.350000 0004 0386 9924Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard, Cambridge, MA USA
| | - Nonhlanhla N. Mkhize
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tandile Hermanus
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Prudence Kgagudi
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Valerie Bekker
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa ,grid.26009.3d0000 0004 1936 7961Present Address: Duke Center for Human Systems Immunology, Duke University Departments of Surgery, Immunology, Molecular Genetics and Microbiology, Durham, NC USA
| | - Haajira Kaldine
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Rutendo E. Mapengo
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Amanda Eaton
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC USA
| | - Elize Domin
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC USA
| | - Carley West
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC USA
| | - Wenhong Feng
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC USA
| | - Haili Tang
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC USA
| | - Kelly E. Seaton
- grid.26009.3d0000 0004 1936 7961Duke University Departments of Surgery, Immunology, Molecular Genetics and Micobiology, Duke Center for Human Systems Immunology, Durham, NC USA
| | - Jack Heptinstall
- grid.26009.3d0000 0004 1936 7961Duke University Departments of Surgery, Immunology, Molecular Genetics and Micobiology, Duke Center for Human Systems Immunology, Durham, NC USA
| | - Caroline Brackett
- grid.26009.3d0000 0004 1936 7961Duke University Departments of Surgery, Immunology, Molecular Genetics and Micobiology, Duke Center for Human Systems Immunology, Durham, NC USA
| | - Kelvin Chiong
- grid.26009.3d0000 0004 1936 7961Duke University Departments of Surgery, Immunology, Molecular Genetics and Micobiology, Duke Center for Human Systems Immunology, Durham, NC USA
| | - Georgia D. Tomaras
- grid.26009.3d0000 0004 1936 7961Duke University Departments of Surgery, Immunology, Molecular Genetics and Micobiology, Duke Center for Human Systems Immunology, Durham, NC USA
| | - Philip Andrew
- grid.245835.d0000 0001 0300 5112Family Health International, Durham, NC USA
| | - Bryan T. Mayer
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Daniel B. Reeves
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Magdalena E. Sobieszczyk
- grid.21729.3f0000000419368729Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY USA
| | - Nigel Garrett
- grid.16463.360000 0001 0723 4123Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa ,grid.16463.360000 0001 0723 4123Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Jorge Sanchez
- grid.10800.390000 0001 2107 4576Centro de Investigaciones Tecnológicas, Biomédicas y Medioambientales, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Cynthia Gay
- grid.10698.360000000122483208Division of Infectious Diseases, The University of North Carolina at Chapel Hill, Chapel Hill, NC USA
| | - Joseph Makhema
- Botswana-Harvard AIDS Initiative Partnership for HIV Research and Education, Gaborone, Botswana ,grid.239395.70000 0000 9011 8547Division of Infectious Disease, Beth Israel Deaconess Medical Center, Boston, MA USA
| | - Carolyn Williamson
- grid.7836.a0000 0004 1937 1151Division of Medical Virology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - James I. Mullins
- grid.34477.330000000122986657Department of Global Health, University of Washington, Seattle, WA USA ,grid.34477.330000000122986657Department of Microbiology, University of Washington, Seattle, WA USA ,grid.34477.330000000122986657Department of Medicine, University of Washington, Seattle, WA USA
| | - John Hural
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA
| | - Myron S. Cohen
- grid.10698.360000000122483208Institute of Global Health and Infectious Diseases, The University of North Carolina at Chapel Hill, Chapel Hill, NC USA
| | - Lawrence Corey
- grid.270240.30000 0001 2180 1622Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA USA ,grid.34477.330000000122986657Department of Medicine, University of Washington, Seattle, WA USA ,grid.34477.330000000122986657Department of Laboratory Medicine, University of Washington, Seattle, WA USA
| | - David C. Montefiori
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC USA
| | - Lynn Morris
- grid.416657.70000 0004 0630 4574National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa ,grid.11951.3d0000 0004 1937 1135Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa ,grid.16463.360000 0001 0723 4123Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa
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10
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Xu S, Carpenter MC, Spreng RL, Neidich SD, Sarkar S, Tenney D, Goodman D, Sawant S, Jha S, Dunn B, Juliana McElrath M, Bekker V, Mudrak SV, Flinko R, Lewis GK, Ferrari G, Tomaras GD, Shen X, Ackerman ME. Impact of adjuvants on the biophysical and functional characteristics of HIV vaccine-elicited antibodies in humans. NPJ Vaccines 2022; 7:90. [PMID: 35927399 PMCID: PMC9352797 DOI: 10.1038/s41541-022-00514-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/01/2022] [Indexed: 01/14/2023] Open
Abstract
Adjuvants can alter the magnitude, characteristics, and persistence of the humoral response to protein vaccination. HIV vaccination might benefit from tailored adjuvant choice as raising a durable and protective response to vaccination has been exceptionally challenging. Analysis of trials of partially effective HIV vaccines have identified features of the immune response that correlate with decreased risk, including high titers of V1V2-binding IgG and IgG3 responses with low titers of V1V2-binding IgA responses and enhanced Fc effector functions, notably antibody-dependent cellular cytotoxicity (ADCC) and antibody-dependent cellular phagocytosis (ADCP). However, there has been limited opportunity to compare the effect of different adjuvants on these activities in humans. Here, samples from the AVEG015 study, a phase 1 trial in which participants (n = 112) were immunized with gp120SF-2 and one of six different adjuvants or combinations thereof were assessed for antibody titer, biophysical features, and diverse effector functions. Three adjuvants, MF59 + MTP-PE, SAF/2, and SAF/2 + MDP, increased the peak magnitude and durability of antigen-specific IgG3, IgA, FcγR-binding responses and ADCP activity, as compared to alum. While multiple adjuvants increased the titer of IgG, IgG3, and IgA responses, none consistently altered the balance of IgG to IgA or IgG3 to IgA. Linear regression analysis identified biophysical features including gp120-specific IgG and FcγR-binding responses that could predict functional activity, and network analysis identified coordinated aspects of the humoral response. These analyses reveal the ability of adjuvants to drive the character and function of the humoral response despite limitations of small sample size and immune variability in this human clinical trial.
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Affiliation(s)
- Shiwei Xu
- Quantitative Biomedical Science Program, Dartmouth College, Hanover, NH, USA
| | | | - Rachel L Spreng
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Scott D Neidich
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Sharanya Sarkar
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - DeAnna Tenney
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Derrick Goodman
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Sheetal Sawant
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Shalini Jha
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Brooke Dunn
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - M Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
- Departments of Laboratory Medicine and Medicine, University of Washington, Seattle, WA, USA
| | - Valerie Bekker
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Sarah V Mudrak
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Robin Flinko
- Division of Vaccine Research, The Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - George K Lewis
- Division of Vaccine Research, The Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Guido Ferrari
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Georgia D Tomaras
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Xiaoying Shen
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA.
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA.
| | - Margaret E Ackerman
- Quantitative Biomedical Science Program, Dartmouth College, Hanover, NH, USA.
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA.
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11
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Wieczorek L, Zemil M, Merbah M, Dussupt V, Kavusak E, Molnar S, Heller J, Beckman B, Wollen-Roberts S, Peachman KK, Darden JM, Krebs S, Rolland M, Peel SA, Polonis VR. Evaluation of Antibody-Dependent Fc-Mediated Viral Entry, as Compared With Neutralization, in SARS-CoV-2 Infection. Front Immunol 2022; 13:901217. [PMID: 35711449 PMCID: PMC9193970 DOI: 10.3389/fimmu.2022.901217] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/05/2022] [Indexed: 01/08/2023] Open
Abstract
Fc-mediated virus entry has been observed for many viruses, but the characterization of this activity in convalescent plasma against SARS-CoV-2 Variants of Concern (VOC) is undefined. In this study, we evaluated Fc-mediated viral entry (FVE) on FcγRIIa-expressing HEK293 cells in the presence of SARS-CoV-2 convalescent plasma and compared it with SARS-CoV-2 pseudovirus neutralization using ACE2-expressing HEK293 cells. The plasma were collected early in the pandemic from 39 individuals. We observed both neutralization and FVE against the infecting Washington SARS-CoV-2 strain for 31% of plasmas, neutralization, but not FVE for 61% of plasmas, and no neutralization or FVE for 8% of plasmas. Neutralization titer correlated significantly with the plasma dilution at which maximum FVE was observed, indicating Fc-mediated uptake peaked as neutralization potency waned. While total Spike-specific plasma IgG levels were similar between plasma that mediated FVE and those that did not, Spike-specific plasma IgM levels were significantly higher in plasma that did not mediate FVE. Plasma neutralization titers against the Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1) and Delta (B.1.617.2) VOC were significantly lower than titers against the Washington strain, while plasma FVE activity against the VOC was either higher or similar. This is the first report to demonstrate a functional shift in convalescent plasma antibodies from neutralizing and FVE-mediating against the earlier Washington strain, to an activity mediating only FVE and no neutralization activity against the emerging VOC, specifically the Beta (B.1.351) and Gamma (P.1) VOC. It will be important to determine the in vivo relevance of these findings.
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Affiliation(s)
- Lindsay Wieczorek
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Michelle Zemil
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Mélanie Merbah
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Vincent Dussupt
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Erin Kavusak
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Sebastian Molnar
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Jonah Heller
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Bradley Beckman
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Suzanne Wollen-Roberts
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Kristina K. Peachman
- Diagnostics and Countermeasures Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Janice M. Darden
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
- Diagnostics and Countermeasures Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Shelly Krebs
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Morgane Rolland
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Sheila A. Peel
- Diagnostics and Countermeasures Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Victoria R. Polonis
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
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12
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Prévost J, Richard J, Gasser R, Medjahed H, Kirchhoff F, Hahn BH, Kappes JC, Ochsenbauer C, Duerr R, Finzi A. Detection of the HIV-1 Accessory Proteins Nef and Vpu by Flow Cytometry Represents a New Tool to Study Their Functional Interplay within a Single Infected CD4 + T Cell. J Virol 2022; 96:e0192921. [PMID: 35080425 PMCID: PMC8941894 DOI: 10.1128/jvi.01929-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/16/2022] [Indexed: 11/20/2022] Open
Abstract
The HIV-1 Nef and Vpu accessory proteins are known to protect infected cells from antibody-dependent cellular cytotoxicity (ADCC) responses by limiting exposure of CD4-induced (CD4i) envelope (Env) epitopes at the cell surface. Although both proteins target the host receptor CD4 for degradation, the extent of their functional redundancy is unknown. Here, we developed an intracellular staining technique that permits the intracellular detection of both Nef and Vpu in primary CD4+ T cells by flow cytometry. Using this method, we show that the combined expression of Nef and Vpu predicts the susceptibility of HIV-1-infected primary CD4+ T cells to ADCC by HIV+ plasma. We also show that Vpu cannot compensate for the absence of Nef, thus providing an explanation for why some infectious molecular clones that carry a LucR reporter gene upstream of Nef render infected cells more susceptible to ADCC responses. Our method thus represents a new tool to dissect the biological activity of Nef and Vpu in the context of other host and viral proteins within single infected CD4+ T cells. IMPORTANCE HIV-1 Nef and Vpu exert several biological functions that are important for viral immune evasion, release, and replication. Here, we developed a new method allowing simultaneous detection of these accessory proteins in their native form together with some of their cellular substrates. This allowed us to show that Vpu cannot compensate for the lack of a functional Nef, which has implications for studies that use Nef-defective viruses to study ADCC responses.
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Affiliation(s)
- Jérémie Prévost
- Centre de Recherche du CHUM, Montreal, Quebec, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
| | - Jonathan Richard
- Centre de Recherche du CHUM, Montreal, Quebec, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
| | - Romain Gasser
- Centre de Recherche du CHUM, Montreal, Quebec, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
| | | | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany
| | - Beatrice H. Hahn
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - John C. Kappes
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Christina Ochsenbauer
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ralf Duerr
- Department of Microbiology, New York University School of Medicine, New York, New York, USA
| | - Andrés Finzi
- Centre de Recherche du CHUM, Montreal, Quebec, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada
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13
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Vaccine-Induced, High-Magnitude HIV Env-Specific Antibodies with Fc-Mediated Effector Functions Are Insufficient to Protect Infant Rhesus Macaques against Oral SHIV Infection. mSphere 2022; 7:e0083921. [PMID: 35196125 PMCID: PMC8865927 DOI: 10.1128/msphere.00839-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Improved access to antiretroviral therapy (ART) and antenatal care has significantly reduced in utero and peripartum mother-to-child human immunodeficiency virus (HIV) transmission. However, as breast milk transmission of HIV still occurs at an unacceptable rate, there remains a need to develop an effective vaccine for the pediatric population. Previously, we compared different HIV vaccine strategies, intervals, and adjuvants in infant rhesus macaques to optimize the induction of HIV envelope (Env)-specific antibodies with Fc-mediated effector function. In this study, we tested the efficacy of an optimized vaccine regimen against oral simian-human immunodeficiency virus (SHIV) acquisition in infant macaques. Twelve animals were immunized with 1086.c gp120 protein adjuvanted with 3M-052 in stable emulsion and modified vaccinia Ankara (MVA) virus expressing 1086.c HIV Env. Twelve control animals were immunized with empty MVA. The vaccine prime was given within 10 days of birth, with booster doses being administered at weeks 6 and 12. The vaccine regimen induced Env-specific plasma IgG antibodies capable of antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis (ADCP). Beginning at week 15, infants were exposed orally to escalating doses of heterologous SHIV-1157(QNE)Y173H once a week until infected. Despite the induction of strong Fc-mediated antibody responses, the vaccine regimen did not reduce the risk of infection or time to acquisition compared to controls. However, among vaccinated animals, ADCC postvaccination and postinfection was associated with reduced peak viremia. Thus, nonneutralizing Env-specific antibodies with Fc effector function elicited by this vaccine regimen were insufficient for protection against heterologous oral SHIV infection shortly after the final immunization but may have contributed to control of viremia. IMPORTANCE Women of childbearing age are three times more likely to contract HIV infection than their male counterparts. Poor HIV testing rates coupled with low adherence to antiretroviral therapy (ART) result in a high risk of mother-to-infant HIV transmission, especially during the breastfeeding period. A preventative vaccine could curb pediatric HIV infections, reduce potential health sequalae, and prevent the need for lifelong ART in this population. The results of the current study imply that the HIV Env-specific IgG antibodies elicited by this candidate vaccine regimen, despite a high magnitude of Fc-mediated effector function but a lack of neutralizing antibodies and polyfunctional T cell responses, were insufficient to protect infant rhesus macaques against oral virus acquisition.
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14
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Lakhashe SK, Amacker M, Hariraju D, Vyas HK, Morrison KS, Weiner JA, Ackerman ME, Roy V, Alter G, Ferrari G, Montefiori DC, Tomaras GD, Sawant S, Yates NL, Gast C, Fleury S, Ruprecht RM. Cooperation Between Systemic and Mucosal Antibodies Induced by Virosomal Vaccines Targeting HIV-1 Env: Protection of Indian Rhesus Macaques Against Low-Dose Intravaginal SHIV Challenges. Front Immunol 2022; 13:788619. [PMID: 35273592 PMCID: PMC8902080 DOI: 10.3389/fimmu.2022.788619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 01/04/2022] [Indexed: 11/13/2022] Open
Abstract
A virosomal vaccine inducing systemic/mucosal anti-HIV-1 gp41 IgG/IgA had previously protected Chinese-origin rhesus macaques (RMs) against vaginal SHIVSF162P3 challenges. Here, we assessed its efficacy in Indian-origin RMs by intramuscular priming/intranasal boosting (n=12/group). Group K received virosome-P1-peptide alone (harboring the Membrane Proximal External Region), Group L combined virosome-rgp41 plus virosome-P1, and Group M placebo virosomes. Vaccination induced plasma binding but no neutralizing antibodies. Five weeks after boosting, all RMs were challenged intravaginally with low-dose SHIVSF162P3 until persistent systemic infection developed. After SHIV challenge #7, six controls were persistently infected versus only one Group L animal (vaccine efficacy 87%; P=0.0319); Group K was not protected. After a 50% SHIV dose increase starting with challenge #8, protection in Group L was lost. Plasmas/sera were analyzed for IgG phenotypes and effector functions; the former revealed that protection in Group L was significantly associated with increased binding to FcγR2/3(A/B) across several time-points, as were some IgG measurements. Vaginal washes contained low-level anti-gp41 IgGs and IgAs, representing a 1-to-5-fold excess over the SHIV inoculum's gp41 content, possibly explaining loss of protection after the increase in challenge-virus dose. Virosomal gp41-vaccine efficacy was confirmed during the initial seven SHIV challenges in Indian-origin RMs when the SHIV inoculum had at least 100-fold more HIV RNA than acutely infected men's semen. Vaccine protection by virosome-induced IgG and IgA parallels the cooperation between systemically administered IgG1 and mucosally applied dimeric IgA2 monoclonal antibodies that as single-agents provided no/low protection - but when combined, prevented mucosal SHIV transmission in all passively immunized RMs.
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Affiliation(s)
| | - Mario Amacker
- Department of Pulmonary Medicine, Bern University Hospital, University of Bern, Bern, Switzerland,Mymetics SA, Epalinges, Switzerland
| | - Dinesh Hariraju
- Texas Biomedical Research Institute, San Antonio, TX, United States,New Iberia Research Center, University of Louisiana at Lafayette, Lafayette, LA, United States,Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, United States
| | - Hemant K. Vyas
- Texas Biomedical Research Institute, San Antonio, TX, United States
| | - Kyle S. Morrison
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Joshua A. Weiner
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Margaret E. Ackerman
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States,Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Vicky Roy
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Galit Alter
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States,Massachusetts Consortium on Pathogen Readiness, Boston, MA, United States
| | - Guido Ferrari
- Department of Surgery, Duke University, Durham, NC, United States,Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - David C. Montefiori
- Department of Surgery, Duke University, Durham, NC, United States,Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Georgia D. Tomaras
- Department of Surgery, Duke University, Durham, NC, United States,Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, United States,Department of Immunology, Duke University, Durham, NC, United States
| | - Sheetal Sawant
- Department of Surgery, Duke University, Durham, NC, United States
| | - Nicole L. Yates
- Department of Surgery, Duke University, Durham, NC, United States
| | | | | | - Ruth M. Ruprecht
- Texas Biomedical Research Institute, San Antonio, TX, United States,New Iberia Research Center, University of Louisiana at Lafayette, Lafayette, LA, United States,Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, United States,*Correspondence: Ruth M. Ruprecht,
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15
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Broadly binding and functional antibodies and persisting memory B cells elicited by HIV vaccine PDPHV. NPJ Vaccines 2022; 7:18. [PMID: 35140230 PMCID: PMC8828892 DOI: 10.1038/s41541-022-00441-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/14/2022] [Indexed: 11/24/2022] Open
Abstract
Since publishing our original reports on the safety and immunogenicity of a polyvalent DNA prime-protein boost HIV vaccine (PDPHV) which elicited high titer antibody responses with broad specificity, neutralizing activities to multiple HIV-1 subtypes, as well as poly-functional T cell responses, accumulated findings from other HIV vaccine studies indicated the important roles of Ig isotype distribution, Fc medicated functions and the persistence of memory immune responses which were not studied in previous PDPHV related reports. The current report provides further detailed characterization of these parameters in human volunteers receiving the PDPHV regimen. Antibody responses were assessed using IgG isotype and gp70-V1V2-binding ELISAs, peptide arrays, and antibody-dependent cellular cytotoxicity (ADCC) assays. B cell ELISPOT was used to detect gp120-specific memory B cells. Our results showed that the gp120-specific antibodies were primarily of the IgG1 isotype. HIV-1 envelope protein variable regions V1 and V2 were actively targeted by the antibodies as determined by specific binding to both peptide and V1V2-carrying scaffolds. The antibodies showed potent and broad ADCC responses. Finally, the B cell ELISPOT analysis demonstrated persistence of gp120-specific memory B cells for at least 6 months after the last dose. These data indicate that broadly reactive binding Abs and ADCC responses as well as durable gp120-specific memory B cells were elicited by the polyvalent heterologous prime-boost vaccination regimens and showed great promise as a candidate HIV vaccine.
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16
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Herrera C, Veazey R, Lemke MM, Arnold K, Kim JH, Shattock RJ. Ex Vivo Evaluation of Mucosal Responses to Vaccination with ALVAC and AIDSVAX of Non-Human Primates. Vaccines (Basel) 2022; 10:187. [PMID: 35214645 PMCID: PMC8879115 DOI: 10.3390/vaccines10020187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 02/01/2023] Open
Abstract
Non-human primates (NHPs) remain the most relevant challenge model for the evaluation of HIV vaccine candidates; however, discrepancies with clinical trial results have emphasized the need to further refine the NHP model. Furthermore, classical evaluation of vaccine candidates is based on endpoints measured systemically. We assessed the mucosal responses elicited upon vaccination with ALVAC and AIDSVAX using ex vivo Rhesus macaque mucosal tissue explant models. Following booster immunization with ALVAC/AIDSVAX, anti-gp120 HIV-1CM244-specific IgG and IgA were detected in culture supernatant cervicovaginal and colorectal tissue explants, as well as systemically. Despite protection from ex vivo viral challenge, no neutralization was observed with tissue explant culture supernatants. Priming with ALVAC induced distinct cytokine profiles in cervical and rectal tissue. However, ALVAC/AIDSVAX boosts resulted in similar modulations in both mucosal tissues with a statistically significant decrease in cytokines linked to inflammatory responses and lymphocyte differentiation. With ALVAC/AIDSVAX boosts, significant correlations were observed between cytokine levels and specific IgA in cervical explants and specific IgG and IgA in rectal tissue. The cytokine secretome revealed differences between vaccination with ALVAC and ALVAC/AIDSVAX not previously observed in mucosal tissues and distinct from the systemic response, which could represent a biosignature of the vaccine combination.
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Affiliation(s)
- Carolina Herrera
- Department of Medicine, Imperial College London, London W2 1PG, UK;
| | - Ronald Veazey
- Tulane National Primate Research Center, School of Medicine, Tulane University, Covington, GA 70433, USA;
| | - Melissa M. Lemke
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; (M.M.L.); (K.A.)
| | - Kelly Arnold
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; (M.M.L.); (K.A.)
| | - Jerome H. Kim
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MA 20817, USA;
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17
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Tolbert WD, Nguyen DN, Tuyishime M, Crowley AR, Chen Y, Jha S, Goodman D, Bekker V, Mudrak SV, DeVico AL, Lewis GK, Theis JF, Pinter A, Moody MA, Easterhoff D, Wiehe K, Pollara J, Saunders KO, Tomaras GD, Ackerman M, Ferrari G, Pazgier M. Structure and Fc-Effector Function of Rhesusized Variants of Human Anti-HIV-1 IgG1s. Front Immunol 2022; 12:787603. [PMID: 35069563 PMCID: PMC8770954 DOI: 10.3389/fimmu.2021.787603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/09/2021] [Indexed: 01/14/2023] Open
Abstract
Passive transfer of monoclonal antibodies (mAbs) of human origin into Non-Human Primates (NHPs), especially those which function predominantly by a Fc-effector mechanism, requires an a priori preparation step, in which the human mAb is reengineered to an equivalent NHP IgG subclass. This can be achieved by changing both the Fc and Fab sequence while simultaneously maintaining the epitope specificity of the parent antibody. This Ab reengineering process, referred to as rhesusization, can be challenging because the simple grafting of the complementarity determining regions (CDRs) into an NHP IgG subclass may impact the functionality of the mAb. Here we describe the successful rhesusization of a set of human mAbs targeting HIV-1 envelope (Env) epitopes involved in potent Fc-effector function against the virus. This set includes a mAb targeting a linear gp120 V1V2 epitope isolated from a RV144 vaccinee, a gp120 conformational epitope within the Cluster A region isolated from a RV305 vaccinated individual, and a linear gp41 epitope within the immunodominant Cys-loop region commonly targeted by most HIV-1 infected individuals. Structural analyses confirm that the rhesusized variants bind their respective Env antigens with almost identical specificity preserving epitope footprints and most antigen-Fab atomic contacts with constant regions folded as in control RM IgG1s. In addition, functional analyses confirm preservation of the Fc effector function of the rhesusized mAbs including the ability to mediate Antibody Dependent Cell-mediated Cytotoxicity (ADCC) and antibody dependent cellular phagocytosis by monocytes (ADCP) and neutrophils (ADNP) with potencies comparable to native macaque antibodies of similar specificity. While the antibodies chosen here are relevant for the examination of the correlates of protection in HIV-1 vaccine trials, the methods used are generally applicable to antibodies for other purposes.
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Affiliation(s)
- William D. Tolbert
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Dung N. Nguyen
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Marina Tuyishime
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Andrew R. Crowley
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Yaozong Chen
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Shalini Jha
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Derrick Goodman
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Valerie Bekker
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Sarah V. Mudrak
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Anthony L. DeVico
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - George K. Lewis
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - James F. Theis
- Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, NJ, United States
| | - Abraham Pinter
- Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, NJ, United States
| | - M. Anthony Moody
- Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States
| | - David Easterhoff
- Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Kevin Wiehe
- Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Department of Medicine, Duke University School of Medicine, Durham, NC, United States
| | - Justin Pollara
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Kevin O. Saunders
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Georgia D. Tomaras
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Margaret Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Guido Ferrari
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States,Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC, United States
| | - Marzena Pazgier
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD, United States,*Correspondence: Marzena Pazgier,
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18
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Mitchell JL, Pollara J, Dietze K, Edwards RW, Nohara J, N'guessan KF, Zemil M, Buranapraditkun S, Takata H, Li Y, Muir R, Kroon E, Pinyakorn S, Jha S, Manasnayakorn S, Chottanapund S, Thantiworasit P, Prueksakaew P, Ratnaratorn N, Nuntapinit B, Fox L, Tovanabutra S, Paquin-Proulx D, Wieczorek L, Polonis VR, Maldarelli F, Haddad EK, Phanuphak P, Sacdalan CP, Rolland M, Phanuphak N, Ananworanich J, Vasan S, Ferrari G, Trautmann L. Anti-HIV antibody development up to one year after antiretroviral therapy initiation in acute HIV infection. J Clin Invest 2021; 132:150937. [PMID: 34762600 PMCID: PMC8718150 DOI: 10.1172/jci150937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 11/10/2021] [Indexed: 11/17/2022] Open
Abstract
Early initiation of antiretroviral therapy (ART) in acute HIV infection (AHI) is effective at limiting seeding of the HIV viral reservoir, but little is known about how the resultant decreased antigen load affects long-term Ab development after ART. We report here that Env-specific plasma antibody (Ab) levels and Ab-dependent cellular cytotoxicity (ADCC) increased during the first 24 weeks of ART and correlated with Ab levels persisting after 48 weeks of ART. Participants treated in AHI stage 1 had lower Env-specific Ab levels and ADCC activity on ART than did those treated later. Importantly, participants who initiated ART after peak viremia in AHI developed elevated cross-clade ADCC responses that were detectable 1 year after ART initiation, even though clinically undetectable viremia was reached by 24 weeks. These data suggest that there is more germinal center (GC) activity in the later stages of AHI and that Ab development continues in the absence of detectable viremia during the first year of suppressive ART. The development of therapeutic interventions that can enhance earlier development of GCs in AHI and Abs after ART initiation could provide important protection against the viral reservoir that is seeded in individuals treated early in the disease.
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Affiliation(s)
- Julie L Mitchell
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, United States of America
| | - Justin Pollara
- Department of Surgery, Duke University Medical Center, Durham, United States of America
| | - Kenneth Dietze
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - R Whitney Edwards
- Department of Surgery, Duke University Medical Center, Durham, United States of America
| | - Junsuke Nohara
- Department of Surgery, Duke University Medical Center, Durham, United States of America
| | - Kombo F N'guessan
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Michelle Zemil
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Supranee Buranapraditkun
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Hiroshi Takata
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, United States of America
| | - Yifan Li
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Roshell Muir
- Demartment of Medicine, Division of Infectious Diseases & HIV Medicine, Drexel University, Philadelphia, United States of America
| | - Eugene Kroon
- Institute of HIV Research and Innovation, Bangkok, Thailand
| | - Suteeraporn Pinyakorn
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Shalini Jha
- Department of Surgery, Duke University Madical Center, Durham, United States of America
| | - Sopark Manasnayakorn
- Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Suthat Chottanapund
- Department of Surgery, Bamrasnaradura Infectious Disease Institute, Nonthaburi, Thailand
| | - Pattarawat Thantiworasit
- Center of Excellence in Vaccine Research and Development, Chulalongkorn University, Bangkok, Thailand
| | | | | | - Bessara Nuntapinit
- Armed Forces Research Institute of Medical Sciences in Bangkok, Bangkok, Thailand
| | - Lawrence Fox
- Division of AIDS, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, United States of America
| | - Sodsai Tovanabutra
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Dominic Paquin-Proulx
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Lindsay Wieczorek
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Victoria R Polonis
- Department of Vaccine Research, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, United States of America
| | - Frank Maldarelli
- HIV Dynamics and Replication Program, NCI/NIH, Frederick, United States of America
| | - Elias K Haddad
- Demartment of Medicine, Division of Infectious Diseases & HIV Medicine, Drexel University College of Medicine, Philadelphia, United States of America
| | | | | | - Morgane Rolland
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | | | | | - Sandhya Vasan
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, United States of America
| | - Guido Ferrari
- Department of Surgery, Duke University Medical Center, Durham, United States of America
| | - Lydie Trautmann
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, United States of America
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19
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Selection of HIV Envelope strains for standardized assessments of vaccine-elicited antibody-dependent cellular cytotoxicity (ADCC)-mediating antibodies. J Virol 2021; 96:e0164321. [PMID: 34730393 PMCID: PMC8791251 DOI: 10.1128/jvi.01643-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Antibody-dependent cellular cytotoxicity (ADCC) has been correlated with reduced risk of HIV-1 infection in several preclinical vaccine trials and the RV144 clinical trial, indicating this is a relevant antibody function to study. Given the diversity of HIV-1, the breadth of vaccine-induced antibody responses is a critical parameter to understand if a universal vaccine is to be realised. Moreover, breadth of ADCC responses can be influenced by different vaccine strategies and regimens, including adjuvants. Therefore, to accurately evaluate ADCC and to compare vaccine regimens, it is important to understand the range of HIV Envelope susceptibility to these responses. These evaluations have been limited because of the complexity of the assay and the lack of a comprehensive panel of viruses for the assessment of these humoral responses. Here, we used twenty-nine HIV-1 infectious molecular clones (IMCs) representing different Envelope subtypes and circulating recombinant forms to characterise susceptibility to ADCC from antibodies in plasma from infected individuals, including thirteen viraemic individuals, ten controllers and six with broadly neutralizing antibody responses. We found in our panel that ADCC susceptibility of the IMCs in our panel did not cluster by subtype, infectivity, level of CD4 downregulation, level of shedding, or neutralization sensitivity. Using partition-around-medoids (PAM) clustering to distinguish smaller groups of IMCs with similar ADCC susceptibility, we identified nested panels of four to eight IMCs that broadly represent the ADCC susceptibility of the entire 29 IMC panel. These panels, together with reagents developed to specifically accommodate circulating viruses at the geographical sites of vaccine trials, will provide a powerful tool to harmonise ADCC data generated across different studies, and detect common themes of ADCC responses elicited by various vaccines. IMPORTANCE Antibody-dependent cellular cytotoxicity (ADCC) responses were found to correlate with reduced risk of infection in the RV144 trial, the only human HIV-1 vaccine to show any efficacy to date. However, reagents to understand the breadth and magnitude of these responses across preclinical and clinical vaccine trials remain underdeveloped. In this study, we characterise HIV-1 infectious molecular clones encoding 29 distinct envelope strains (Env-IMCs) to understand factors which impact virus susceptibility to ADCC and use statistical methods to identify smaller nested panels of four to eight Env-IMCs which accurately represent the full set. These reagents can be used as standardized reagents across studies to fully understand how ADCC may affect efficacy of future vaccine studies, and how studies differed in the breadth of responses developed.
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20
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Mielke D, Bandawe G, Zheng J, Jones J, Abrahams MR, Bekker V, Ochsenbauer C, Garrett N, Abdool Karim S, Moore PL, Morris L, Montefiori D, Anthony C, Ferrari G, Williamson C. ADCC-mediating non-neutralizing antibodies can exert immune pressure in early HIV-1 infection. PLoS Pathog 2021; 17:e1010046. [PMID: 34788337 PMCID: PMC8598021 DOI: 10.1371/journal.ppat.1010046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/19/2021] [Indexed: 11/19/2022] Open
Abstract
Despite antibody-dependent cellular cytotoxicity (ADCC) responses being implicated in protection from HIV-1 infection, there is limited evidence that they control virus replication. The high mutability of HIV-1 enables the virus to rapidly adapt, and thus evidence of viral escape is a very sensitive approach to demonstrate the importance of this response. To enable us to deconvolute ADCC escape from neutralizing antibody (nAb) escape, we identified individuals soon after infection with detectable ADCC responses, but no nAb responses. We evaluated the kinetics of ADCC and nAb responses, and viral escape, in five recently HIV-1-infected individuals. In one individual we detected viruses that escaped from ADCC responses but were sensitive to nAbs. In the remaining four participants, we did not find evidence of viral evolution exclusively associated with ADCC-mediating non-neutralizing Abs (nnAbs). However, in all individuals escape from nAbs was rapid, occurred at very low titers, and in three of five cases we found evidence of viral escape before detectable nAb responses. These data show that ADCC-mediating nnAbs can drive immune escape in early infection, but that nAbs were far more effective. This suggests that if ADCC responses have a protective role, their impact is limited after systemic virus dissemination.
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Affiliation(s)
- Dieter Mielke
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
- Institute of Infectious Diseases and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Gama Bandawe
- Institute of Infectious Diseases and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
- Malawi University of Science and Technology, Thyolo, Malawi
| | - Jie Zheng
- University of Alabama at Birmingham, Department of Medicine, Birmingham, Alabama, United States of America
| | - Jennifer Jones
- University of Alabama at Birmingham, Department of Medicine, Birmingham, Alabama, United States of America
| | - Melissa-Rose Abrahams
- Institute of Infectious Diseases and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Valerie Bekker
- National Institute for Communicable Diseases, Johannesburg, South Africa
| | - Christina Ochsenbauer
- University of Alabama at Birmingham, Department of Medicine, Birmingham, Alabama, United States of America
| | - Nigel Garrett
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu Natal, Durban, South Africa
- Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu Natal, Durban, South Africa
| | - Salim Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu Natal, Durban, South Africa
- Department of Epidemiology, Columbia University, New York, New York, United States of America
| | - Penny L. Moore
- National Institute for Communicable Diseases, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu Natal, Durban, South Africa
- University of Witswaterstrand, Johannesburg, South Africa
- National Health Laboratory Service, Johannesburg, South Africa
| | - Lynn Morris
- National Institute for Communicable Diseases, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu Natal, Durban, South Africa
- University of Witswaterstrand, Johannesburg, South Africa
- National Health Laboratory Service, Johannesburg, South Africa
| | - David Montefiori
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Colin Anthony
- Institute of Infectious Diseases and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Guido Ferrari
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Carolyn Williamson
- Institute of Infectious Diseases and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu Natal, Durban, South Africa
- National Health Laboratory Service, Johannesburg, South Africa
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21
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Cheng HD, Dowell KG, Bailey-Kellogg C, Goods BA, Love JC, Ferrari G, Alter G, Gach J, Forthal DN, Lewis GK, Greene K, Gao H, Montefiori DC, Ackerman ME. Diverse antiviral IgG effector activities are predicted by unique biophysical antibody features. Retrovirology 2021; 18:35. [PMID: 34717659 PMCID: PMC8557579 DOI: 10.1186/s12977-021-00579-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/20/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The critical role of antibody Fc-mediated effector functions in immune defense has been widely reported in various viral infections. These effector functions confer cellular responses through engagement with innate immune cells. The precise mechanism(s) by which immunoglobulin G (IgG) Fc domain and cognate receptors may afford protection are poorly understood, however, in the context of HIV/SHIV infections. Many different in vitro assays have been developed and utilized to measure effector functions, but the extent to which these assays capture distinct antibody activities has not been fully elucidated. RESULTS In this study, six Fc-mediated effector function assays and two biophysical antibody profiling assays were performed on a common set of samples from HIV-1 infected and vaccinated subjects. Biophysical antibody profiles supported robust prediction of diverse IgG effector functions across distinct Fc-mediated effector function assays. While a number of assays showed correlated activities, supervised machine learning models indicated unique antibody features as primary contributing factors to the associated effector functions. Additional experiments established the mechanistic relevance of relationships discovered using this unbiased approach. CONCLUSIONS In sum, this study provides better resolution on the diversity and complexity of effector function assays, offering a clearer perspective into this family of antibody mechanisms of action to inform future HIV-1 treatment and vaccination strategies.
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Affiliation(s)
- Hao D. Cheng
- grid.254880.30000 0001 2179 2404Thayer School of Engineering, Dartmouth College, Hanover, NH USA ,grid.254880.30000 0001 2179 2404Molecular and Cellular Biology Program, Dartmouth College, 14 Engineering Dr., Hanover, NH 03755 USA
| | - Karen G. Dowell
- grid.254880.30000 0001 2179 2404Department of Computer Science, Dartmouth College, Hanover, 03755 USA
| | - Chris Bailey-Kellogg
- grid.254880.30000 0001 2179 2404Department of Computer Science, Dartmouth College, Hanover, 03755 USA
| | - Brittany A. Goods
- grid.116068.80000 0001 2341 2786Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA ,grid.116068.80000 0001 2341 2786Department of Biological Engineering, Koch Institute at MIT, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - J. Christopher Love
- grid.116068.80000 0001 2341 2786Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA ,grid.116068.80000 0001 2341 2786Department of Biological Engineering, Koch Institute at MIT, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Guido Ferrari
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA ,grid.189509.c0000000100241216Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27719 USA
| | - Galit Alter
- grid.461656.60000 0004 0489 3491Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139 USA
| | - Johannes Gach
- grid.266093.80000 0001 0668 7243Division of Infectious Diseases, Irvine School of Medicine, University California, Irvine, CA 92697 USA
| | - Donald N. Forthal
- grid.266093.80000 0001 0668 7243Division of Infectious Diseases, Irvine School of Medicine, University California, Irvine, CA 92697 USA
| | - George K. Lewis
- grid.411024.20000 0001 2175 4264Division of Vaccine Research, Institute of Human Virology, University Maryland School of Medicine, Baltimore, MD 21201 USA
| | - Kelli Greene
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA
| | - Hongmei Gao
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA
| | - David C. Montefiori
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA ,grid.189509.c0000000100241216Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27719 USA
| | - Margaret E. Ackerman
- grid.254880.30000 0001 2179 2404Thayer School of Engineering, Dartmouth College, Hanover, NH USA ,grid.254880.30000 0001 2179 2404Molecular and Cellular Biology Program, Dartmouth College, 14 Engineering Dr., Hanover, NH 03755 USA
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22
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Richardson SI, Ayres F, Manamela NP, Oosthuysen B, Makhado Z, Lambson BE, Morris L, Moore PL. HIV Broadly Neutralizing Antibodies Expressed as IgG3 Preserve Neutralization Potency and Show Improved Fc Effector Function. Front Immunol 2021; 12:733958. [PMID: 34566999 PMCID: PMC8462932 DOI: 10.3389/fimmu.2021.733958] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/19/2021] [Indexed: 11/22/2022] Open
Abstract
The ability of several broadly neutralizing antibodies (bNAbs) to protect against HIV infection is enhanced through Fc receptor binding. Antibody isotype modulates this effect, with IgG3 associated with improved HIV control and vaccine efficacy. We recently showed that an IgG3 variant of bNAb CAP256-VRC26.25 exhibited more potent neutralization and phagocytosis than its IgG1 counterpart. Here, we expanded this analysis to include additional bNAbs targeting all major epitopes. A total of 15 bNAbs were expressed as IgG1 or IgG3, and pairs were assessed for neutralization potency against the multi-subtype global panel of 11 HIV strains. Binding to the neonatal Fc receptor (FcRn) and Fcγ receptors were measured using ELISA and antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis were measured using infectious viruses and global panel Env SOSIP trimers, respectively. IgG3 bNAbs generally showed similar or increased (up to 60 fold) neutralization potency than IgG1 versions, though the effect was virus-specific. This improvement was statistically significant for CAP256-VRC26.25, 35022, PGT135 and CAP255.G3. IgG3 bNAbs also showed significantly improved binding to FcγRIIa which correlated with enhanced phagocytosis of all trimeric Env antigens. Differences in ADCC were epitope-specific, with IgG3 bNAbs to the MPER, CD4 binding site and gp120-gp41 interface showing increased ADCC. We also explored the pH dependence of IgG1 and IgG3 variants for FcRn binding, as this determines the half-life of antibodies. We observed reduced pH dependence, associated with shorter half-lives for IgG3 bNAbs, with κ-light chains. However, IgG3 bNAbs that use λ-light chains showed similar pH dependence to their IgG1 counterparts. This study supports the manipulation of the constant region to improve both the neutralizing and Fc effector activity of bNAbs, and suggests that IgG3 versions of bNAbs may be preferable for passive immunity given their polyfunctionality.
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Affiliation(s)
- Simone I Richardson
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa.,Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Frances Ayres
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa
| | - Nelia P Manamela
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa
| | - Brent Oosthuysen
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa
| | - Zanele Makhado
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa
| | - Bronwen E Lambson
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa.,Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Lynn Morris
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa.,Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Penny L Moore
- Centre for HIV and STI's, National Institute for Communicable Diseases, a Division of the National Health Laboratory Service, Johannesburg, South Africa.,Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
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23
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Rossignol E, Alter G, Julg B. Antibodies for Human Immunodeficiency Virus-1 Cure Strategies. J Infect Dis 2021; 223:22-31. [PMID: 33586772 DOI: 10.1093/infdis/jiaa165] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Human immunodeficiency virus (HIV) infection leads to the establishment of a long-lived latent cellular reservoir. One strategy to eliminate quiescent reservoir cells is to reactivate virus replication to induce HIV envelope glycoprotein (Env) expression on the cell surface exposing them to subsequent antibody targeting. Via the interactions between the antibody Fc domain and Fc-γ receptors (FcγRs) that are expressed on innate effector cells, such as natural killer cells, monocytes, and neutrophils, antibodies can mediate the elimination of infected cells. Over the last decade, a multitude of human monoclonal antibodies that are broadly neutralizing across many HIV-1 subtypes have been identified and are currently being explored for HIV eradication strategies. Antibody development also includes novel Fc engineering approaches to increase engagement of effector cells and optimize antireservoir efficacy. In this review, we discuss the usefulness of antibodies for HIV eradication approaches specifically focusing on antibody-mediated strategies to target latently infected cells and options to increase antibody efficacy.
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Affiliation(s)
- Evan Rossignol
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, Massachusetts, USA
| | - Galit Alter
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, Massachusetts, USA
| | - Boris Julg
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, Massachusetts, USA.,Massachusetts General Hospital, Infectious Disease Unit, Boston, Massachusetts, USA
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24
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Sherburn R, Tolbert WD, Gottumukkala S, Hederman AP, Beaudoin-Bussières G, Stanfield-Oakley S, Tuyishime M, Ferrari G, Finzi A, Ackerman ME, Pazgier M. Incorporating the Cluster A and V1V2 Targets into a Minimal Structural Unit of the HIV-1 Envelope to Elicit a Cross-Clade Response with Potent Fc-Effector Functions. Vaccines (Basel) 2021; 9:vaccines9090975. [PMID: 34579212 PMCID: PMC8472903 DOI: 10.3390/vaccines9090975] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/19/2021] [Accepted: 08/24/2021] [Indexed: 12/01/2022] Open
Abstract
The generation of a potent vaccine for the prevention and/or control of HIV-1 has been unsuccessful to date, despite decades of research. Existing evidence from both infected individuals and clinical trials support a role for non-neutralizing or weakly neutralizing antibodies with potent Fc-effector functions in the prevention and control of HIV-1 infection. Vaccination strategies that induce such antibodies have proven partially successful in preventing HIV-1 infection. This is largely thought to be due to the polyclonal response that is induced in a vaccine setting, as opposed to the infusion of a single therapeutic antibody, which is capable of diverse Fc-effector functions and targets multiple but highly conserved epitopes. Here, we build on the success of our inner domain antigen, ID2, which incorporates conformational CD4-inducible (CD4i) epitopes of constant region 1 and 2 (C1C2 or Cluster A), in the absence of neutralizing antibody epitopes, into a minimal structural unit of gp120. ID2 has been shown to induce Cluster A-specific antibodies in a BALB/c mouse model with Fc-effector functions against CD4i targets. In order to generate an immunogen that incorporates both epitope targets implicated in the protective Fc-effector functions of antibodies from the only partially successful human vaccine trial, RV144, we incorporated the V1V2 domain into our ID2 antigen generating ID2-V1V2, which we used to immunize in combination with ID2. Immunized BALB/c mice generated both Cluster A- and V1V2-specific antibodies, which synergized to significantly improve the Fc-mediated effector functions compared to mice immunized with ID2 alone. The sera were able to mediate both antibody-dependent cellular cytotoxicity (ADCC) and antibody-dependent cellular phagocytosis (ADCP). We therefore conclude that ID2-V1V2 + ID2 represents a promising vaccine immunogen candidate for the induction of antibodies with optimal Fc-mediated effector functions against HIV-1.
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Affiliation(s)
- Rebekah Sherburn
- Infectious Diseases Division, Department of Medicine of Uniformed Services, University of the Health Sciences, Bethesda, MD 20814, USA; (R.S.); (W.D.T.); (S.G.)
| | - William D. Tolbert
- Infectious Diseases Division, Department of Medicine of Uniformed Services, University of the Health Sciences, Bethesda, MD 20814, USA; (R.S.); (W.D.T.); (S.G.)
| | - Suneetha Gottumukkala
- Infectious Diseases Division, Department of Medicine of Uniformed Services, University of the Health Sciences, Bethesda, MD 20814, USA; (R.S.); (W.D.T.); (S.G.)
| | - Andrew P. Hederman
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA; (A.P.H.); (M.E.A.)
| | - Guillaume Beaudoin-Bussières
- Centre de Recherche du CHUM, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC H2X0A9, Canada; (G.B.-B.); (A.F.)
| | - Sherry Stanfield-Oakley
- Department of Medicine, Duke School of Medicine, Durham, NC 27710, USA; (S.S.-O.); (M.T.); (G.F.)
| | - Marina Tuyishime
- Department of Medicine, Duke School of Medicine, Durham, NC 27710, USA; (S.S.-O.); (M.T.); (G.F.)
| | - Guido Ferrari
- Department of Medicine, Duke School of Medicine, Durham, NC 27710, USA; (S.S.-O.); (M.T.); (G.F.)
| | - Andrés Finzi
- Centre de Recherche du CHUM, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC H2X0A9, Canada; (G.B.-B.); (A.F.)
| | - Margaret E. Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA; (A.P.H.); (M.E.A.)
| | - Marzena Pazgier
- Infectious Diseases Division, Department of Medicine of Uniformed Services, University of the Health Sciences, Bethesda, MD 20814, USA; (R.S.); (W.D.T.); (S.G.)
- Correspondence:
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25
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Tuyishime M, Dashti A, Faircloth K, Jha S, Nordstrom JL, Haynes BF, Silvestri G, Chahroudi A, Margolis DM, Ferrari G. Elimination of SHIV Infected Cells by Combinations of Bispecific HIVxCD3 DART ® Molecules. Front Immunol 2021; 12:710273. [PMID: 34484212 PMCID: PMC8415083 DOI: 10.3389/fimmu.2021.710273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 07/26/2021] [Indexed: 01/13/2023] Open
Abstract
Bispecific HIVxCD3 DART molecules that co-engage the viral envelope glycoprotein (Env) on HIV-1-infected cells and the CD3 receptor on CD3+ T cells are designed to mediate the cytolysis of HIV-1-infected, Env-expressing cells. Using a novel ex vivo system with cells from rhesus macaques (RMs) infected with a chimeric Simian-Human Immunodeficiency Virus (SHIV) CH505 and maintained on ART, we tested the ability of HIVxCD3 DART molecules to mediate elimination of in vitro-reactivated CD4+ T cells in the absence or presence of autologous CD8+ T cells. HIVxCD3 DART molecules with the anti-HIV-1 Env specificities of A32 or 7B2 (non-neutralizing antibodies) or PGT145 (broadly neutralizing antibody) were evaluated individually or combined. DART molecule-mediated antiviral activity increased significantly in the presence of autologous CD8+ T cells. In this ex vivo system, the PGT145 DART molecule was more active than the 7B2 DART molecule, which was more active than the A32 DART molecule. A triple combination of the DART molecules exceeded the activity of the individual PGT145 DART molecule. Modified quantitative virus outgrowth assays confirmed the ability of the DART molecules to redirect RM CD3+ T cells to eliminate SHIV-infected RM CD4+ T cells as demonstrated by the decreased propagation of in vitro infection by the infected cells pre-incubated with DART molecules in presence of effector CD8+ T cells. While mediating cytotoxic activity, DART molecules did not increase proinflammatory cytokine production. In summary, combination of HIVxCD3 DART molecules that have broadly-neutralizing and non-neutralizing anti-HIV-1 Env specificities can leverage the host immune system for treatment of HIV-1 infection but will require appropriate reactivation of the latent reservoir.
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Affiliation(s)
- Marina Tuyishime
- Department of Surgery, Duke University Medical Center, Durham, NC, United States
| | - Amir Dashti
- Department of Pediatrics, Emory University, Atlanta, GA, United States
| | - Katelyn Faircloth
- Department of Surgery, Duke University Medical Center, Durham, NC, United States
| | - Shalini Jha
- Department of Surgery, Duke University Medical Center, Durham, NC, United States
| | | | - Barton F. Haynes
- Duke Human Vaccine Institute, Durham, NC, United States
- Department of Medicine, Duke University Medical Center, Durham, NC, United States
- Department of Immunology, Duke University Medical Center, Durham, NC, United States
| | - Guido Silvestri
- Department of Pediatrics, Emory University, Atlanta, GA, United States
| | - Ann Chahroudi
- Department of Pediatrics, Emory University, Atlanta, GA, United States
- Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta and Emory University, Atlanta, GA, United States
| | - David M. Margolis
- University of North Carolina (UNC) HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Guido Ferrari
- Department of Surgery, Duke University Medical Center, Durham, NC, United States
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC, United States
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26
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Pino M, Abid T, Pereira Ribeiro S, Edara VV, Floyd K, Smith JC, Latif MB, Pacheco-Sanchez G, Dutta D, Wang S, Gumber S, Kirejczyk S, Cohen J, Stammen RL, Jean SM, Wood JS, Connor-Stroud F, Pollet J, Chen WH, Wei J, Zhan B, Lee J, Liu Z, Strych U, Shenvi N, Easley K, Weiskopf D, Sette A, Pollara J, Mielke D, Gao H, Eisel N, LaBranche CC, Shen X, Ferrari G, Tomaras GD, Montefiori DC, Sekaly RP, Vanderford TH, Tomai MA, Fox CB, Suthar MS, Kozlowski PA, Hotez PJ, Paiardini M, Bottazzi ME, Kasturi SP. A yeast expressed RBD-based SARS-CoV-2 vaccine formulated with 3M-052-alum adjuvant promotes protective efficacy in non-human primates. Sci Immunol 2021; 6:6/61/eabh3634. [PMID: 34266981 PMCID: PMC9119307 DOI: 10.1126/sciimmunol.abh3634] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 07/09/2021] [Indexed: 12/15/2022]
Abstract
Ongoing severe acute respiratory syndrome coronavirus–2 (SARS-CoV-2) vaccine development is focused on identifying stable, cost-effective, and accessible candidates for global use, specifically in low- and middle-income countries. Here, we report the efficacy of a rapidly scalable, novel yeast-expressed SARS-CoV-2–specific receptor binding domain (RBD)–based vaccine in rhesus macaques. We formulated the RBD immunogen in alum, a licensed and an emerging alum-adsorbed TLR-7/8-targeted, 3M-052-alum adjuvant. The RBD + 3M-052-alum-adjuvanted vaccine promoted better RBD binding and effector antibodies, higher CoV-2 neutralizing antibodies, improved TH1-biased CD4+ T cell reactions, and increased CD8+ T cell responses when compared with the alum-alone adjuvanted vaccine. RBD + 3M-052-alum induced a significant reduction of SARS-CoV-2 virus in the respiratory tract upon challenge, accompanied by reduced lung inflammation when compared with unvaccinated controls. Anti-RBD antibody responses in vaccinated animals inversely correlated with viral load in nasal secretions and bronchoalveolar lavage (BAL). RBD + 3M-052-alum blocked a post-SARS-CoV-2 challenge increase in CD14+CD16++ intermediate blood monocytes, and fractalkine, MCP-1 (monocyte chemotactic protein–1), and TRAIL (tumor necrosis factor–related apoptosis-inducing ligand) in the plasma. Decreased plasma analytes and intermediate monocyte frequencies correlated with reduced nasal and BAL viral loads. Last, RBD-specific plasma cells accumulated in the draining lymph nodes and not in the bone marrow, contrary to previous findings. Together, these data show that a yeast-expressed, RBD-based vaccine + 3M-052-alum provides robust immune responses and protection against SARS-CoV-2, making it a strong and scalable vaccine candidate.
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Affiliation(s)
- Maria Pino
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A
| | - Talha Abid
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A
| | - Susan Pereira Ribeiro
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A
| | - Venkata Viswanadh Edara
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A.,Emory Vaccine Center at Emory University, 954, Gatewood Rd, Atlanta, GA, U.S.A.,Centers for Childhood Infections and Vaccines; Children's Healthcare of Atlanta and Emory University, Department of Pediatrics, Atlanta, GA, U.S.A
| | - Katharine Floyd
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A.,Emory Vaccine Center at Emory University, 954, Gatewood Rd, Atlanta, GA, U.S.A.,Centers for Childhood Infections and Vaccines; Children's Healthcare of Atlanta and Emory University, Department of Pediatrics, Atlanta, GA, U.S.A
| | - Justin C Smith
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, U.S.A
| | - Muhammad Bilal Latif
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A
| | - Gabriela Pacheco-Sanchez
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A
| | - Debashis Dutta
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A
| | - Shelly Wang
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A
| | - Sanjeev Gumber
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A.,Division of Pathology, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Shannon Kirejczyk
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A.,Division of Pathology, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Joyce Cohen
- Division of Animal Resources, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Rachelle L Stammen
- Division of Animal Resources, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Sherrie M Jean
- Division of Animal Resources, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Jennifer S Wood
- Division of Animal Resources, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Fawn Connor-Stroud
- Division of Animal Resources, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30329, USA
| | - Jeroen Pollet
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Wen-Hsiang Chen
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Junfei Wei
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Bin Zhan
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Jungsoon Lee
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Zhuyun Liu
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Ulrich Strych
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Neeta Shenvi
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, GA, U.S.A
| | - Kirk Easley
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, GA, U.S.A
| | - Daniela Weiskopf
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA 92037, USA
| | - Alessandro Sette
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology (LJI), La Jolla, CA 92037, USA.,Department of Medicine, Division of Infectious Diseases and Global Public Health, University of California, San Diego (UCSD), La Jolla, CA 92037, USA
| | - Justin Pollara
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Dieter Mielke
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Hongmei Gao
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Nathan Eisel
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Celia C LaBranche
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Xiaoying Shen
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Georgia D Tomaras
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - David C Montefiori
- Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A.,Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Rafick P Sekaly
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A.,Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A
| | - Thomas H Vanderford
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A
| | - Mark A Tomai
- 3M Corporate Research Materials Laboratory, St. Paul, MN, USA
| | | | - Mehul S Suthar
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A.,Emory Vaccine Center at Emory University, 954, Gatewood Rd, Atlanta, GA, U.S.A.,Centers for Childhood Infections and Vaccines; Children's Healthcare of Atlanta and Emory University, Department of Pediatrics, Atlanta, GA, U.S.A
| | - Pamela A Kozlowski
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, U.S.A
| | - Peter J Hotez
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A.,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Mirko Paiardini
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A. .,Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A
| | - Maria Elena Bottazzi
- Texas Children's Center for Vaccine Development, Houston, TX, U.S.A. .,Department of Pediatrics, Molecular Virology & Microbiology, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, U.S.A
| | - Sudhir Pai Kasturi
- Division of Microbiology and Immunology, Yerkes National Primate Research Center at Emory University, 954 Gatewood Rd, Atlanta, GA, U.S.A. .,Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, U.S.A
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27
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Chua JV, Davis C, Husson JS, Nelson A, Prado I, Flinko R, Lam KWJ, Mutumbi L, Mayer BT, Dong D, Fulp W, Mahoney C, Gerber M, Gottardo R, Gilliam BL, Greene K, Gao H, Yates N, Ferrari G, Tomaras G, Montefiori D, Schwartz JA, Fouts T, DeVico AL, Lewis GK, Gallo RC, Sajadi MM. Safety and immunogenicity of an HIV-1 gp120-CD4 chimeric subunit vaccine in a phase 1a randomized controlled trial. Vaccine 2021; 39:3879-3891. [PMID: 34099328 PMCID: PMC8224181 DOI: 10.1016/j.vaccine.2021.05.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/14/2021] [Accepted: 05/23/2021] [Indexed: 01/14/2023]
Abstract
A major challenge for HIV vaccine development is to raise anti-envelope antibodies capable of recognizing and neutralizing diverse strains of HIV-1. Accordingly, a full length single chain (FLSC) of gp120-CD4 chimeric vaccine construct was designed to present a highly conserved CD4-induced (CD4i) HIV-1 envelope structure that elicits cross-reactive anti-envelope humoral responses and protective immunity in animal models of HIV infection. IHV01 is the FLSC formulated in aluminum phosphate adjuvant. We enrolled 65 healthy adult volunteers in this first-in-human phase 1a randomized, double-blind, placebo-controlled study with three dose-escalating cohorts (75 µg, 150 µg, and 300 µg doses). Intramuscular injections were given on weeks 0, 4, 8, and 24. Participants were followed for an additional 24 weeks after the last immunization. The overall incidence of adverse events (AEs) was not significantly different between vaccinees and controls. The majority (89%) of vaccine-related AE were mild. The most common vaccine-related adverse event was injection site pain. There were no vaccine-related serious AE, discontinuation due to AE, intercurrent HIV infection, or significant decreases in CD4 count. By the final vaccination, all vaccine recipients developed antibodies against IHV01 and demonstrated anti-CD4i epitope antibodies. The elicited antibodies reacted with CD4 non-liganded Env antigens from diverse HIV-1 strains. Antibody-dependent cell-mediated cytotoxicity against heterologous infected cells or gp120 bound to CD4+ cells was evident in all cohorts as were anti-gp120 T-cell responses. IHV01 vaccine was safe, well tolerated, and immunogenic at all doses tested. The vaccine raised broadly reactive humoral responses against conserved CD4i epitopes on gp120 that mediates antiviral functions.
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Affiliation(s)
- Joel V Chua
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Charles Davis
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jennifer S Husson
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Amy Nelson
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ilia Prado
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Robin Flinko
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Ka Wing J Lam
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Lydiah Mutumbi
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Bryan T Mayer
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Dan Dong
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - William Fulp
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Celia Mahoney
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Monica Gerber
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Raphael Gottardo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Bruce L Gilliam
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Kelli Greene
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Hongmei Gao
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Nicole Yates
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Georgia Tomaras
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - David Montefiori
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | | | - Timothy Fouts
- Advanced BioScience Laboratories, Rockville, MD, USA
| | - Anthony L DeVico
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA; Global Virus Network, Baltimore, MD, USA
| | - George K Lewis
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA; Global Virus Network, Baltimore, MD, USA
| | - Robert C Gallo
- Global Virus Network, Baltimore, MD, USA; Division of Basic Science, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Mohammad M Sajadi
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA; Intralytix, Columbia, MD, USA.
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28
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Lipid nanoparticle encapsulated nucleoside-modified mRNA vaccines elicit polyfunctional HIV-1 antibodies comparable to proteins in nonhuman primates. NPJ Vaccines 2021; 6:50. [PMID: 33837212 PMCID: PMC8035178 DOI: 10.1038/s41541-021-00307-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 02/24/2021] [Indexed: 02/01/2023] Open
Abstract
The development of an effective AIDS vaccine remains a challenge. Nucleoside-modified mRNAs formulated in lipid nanoparticles (mRNA-LNP) have proved to be a potent mode of immunization against infectious diseases in preclinical studies, and are being tested for SARS-CoV-2 in humans. A critical question is how mRNA-LNP vaccine immunogenicity compares to that of traditional adjuvanted protein vaccines in primates. Here, we show that mRNA-LNP immunization compared to protein immunization elicits either the same or superior magnitude and breadth of HIV-1 Env-specific polyfunctional antibodies. Immunization with mRNA-LNP encoding Zika premembrane and envelope or HIV-1 Env gp160 induces durable neutralizing antibodies for at least 41 weeks. Doses of mRNA-LNP as low as 5 μg are immunogenic in macaques. Thus, mRNA-LNP can be used to rapidly generate single or multi-component vaccines, such as sequential vaccines needed to protect against HIV-1 infection. Such vaccines would be as or more immunogenic than adjuvanted recombinant protein vaccines in primates.
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29
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Innate immune signatures to a partially-efficacious HIV vaccine predict correlates of HIV-1 infection risk. PLoS Pathog 2021; 17:e1009363. [PMID: 33720973 PMCID: PMC7959397 DOI: 10.1371/journal.ppat.1009363] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 02/05/2021] [Indexed: 12/19/2022] Open
Abstract
The pox-protein regimen tested in the RV144 trial is the only vaccine strategy demonstrated to prevent HIV-1 infection. Subsequent analyses identified antibody and cellular immune responses as correlates of risk (CoRs) for HIV infection. Early predictors of these CoRs could provide insight into vaccine-induced protection and guide efforts to enhance vaccine efficacy. Using specimens from a phase 1b trial of the RV144 regimen in HIV-1-uninfected South Africans (HVTN 097), we profiled innate responses to the first ALVAC-HIV immunization. PBMC transcriptional responses peaked 1 day post-vaccination. Type I and II interferon signaling pathways were activated, as were innate pathways critical for adaptive immune priming. We then identified two innate immune transcriptional signatures strongly associated with adaptive immune CoR after completion of the 4-dose regimen. Day 1 signatures were positively associated with antibody-dependent cellular cytotoxicity and phagocytosis activity at Month 6.5. Conversely, a signature present on Days 3 and 7 was inversely associated with Env-specific CD4+ T cell responses at Months 6.5 and 12; rapid resolution of this signature was associated with higher Env-specific CD4+ T-cell responses. These are the first-reported early immune biomarkers of vaccine-induced responses associated with HIV-1 acquisition risk in humans and suggest hypotheses to improve HIV-1 vaccine regimens. The innate immune response is the body’s initial defense against pathogens and is linked to and shapes the subsequent adaptive immune response, which can confer long-lasting protection. For a vaccine with partial efficacy, such as the RV144 HIV vaccine regimen, identifying early innate responses that are linked with adaptive responses—particularly those for which evidence has accumulated that they might be important for protection—could help a more efficacious version be developed. In the HVTN 097 study, the RV144 prime-boost (ALVAC-HIV and AIDSVAX B/E) vaccine regimen was given to South African participants. We characterized the innate response to the first dose of ALVAC-HIV in these participants and identified gene expression signatures present within the first few days that were associated with antibody and T-cell responses to the full vaccine regimen measured up to 1 year later. As these antibody and T-cell responses have previously been implicated in protection, our findings suggest ways of refining the RV144 regimen and also have broader applications to vaccine development.
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30
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HIV-1 Envelope Glycosylation and the Signal Peptide. Vaccines (Basel) 2021; 9:vaccines9020176. [PMID: 33669676 PMCID: PMC7922494 DOI: 10.3390/vaccines9020176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/07/2021] [Accepted: 02/16/2021] [Indexed: 12/25/2022] Open
Abstract
The RV144 trial represents the only vaccine trial to demonstrate any protective effect against HIV-1 infection. While the reason(s) for this protection are still being evaluated, it serves as justification for widespread efforts aimed at developing new, more effective HIV-1 vaccines. Advances in our knowledge of HIV-1 immunogens and host antibody responses to these immunogens are crucial to informing vaccine design. While the envelope (Env) protein is the only viral protein present on the surface of virions, it exists in a complex trimeric conformation and is decorated with an array of variable N-linked glycans, making it an important but difficult target for vaccine design. Thus far, efforts to elicit a protective humoral immune response using structural mimics of native Env trimers have been unsuccessful. Notably, the aforementioned N-linked glycans serve as a component of many of the epitopes crucial for the induction of potentially protective broadly neutralizing antibodies (bnAbs). Thus, a greater understanding of Env structural determinants, most critically Env glycosylation, will no doubt be of importance in generating effective immunogens. Recent studies have identified the HIV-1 Env signal peptide (SP) as an important contributor to Env glycosylation. Further investigation into the mechanisms by which the SP directs glycosylation will be important, both in the context of understanding HIV-1 biology and in order to inform HIV-1 vaccine design.
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31
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Kasturi SP, Rasheed MAU, Havenar-Daughton C, Pham M, Legere T, Sher ZJ, Kovalenkov Y, Gumber S, Huang JY, Gottardo R, Fulp W, Sato A, Sawant S, Stanfield-Oakley S, Yates N, LaBranche C, Alam SM, Tomaras G, Ferrari G, Montefiori D, Wrammert J, Villinger F, Tomai M, Vasilakos J, Fox CB, Reed SG, Haynes BF, Crotty S, Ahmed R, Pulendran B. 3M-052, a synthetic TLR-7/8 agonist, induces durable HIV-1 envelope-specific plasma cells and humoral immunity in nonhuman primates. Sci Immunol 2021; 5:5/48/eabb1025. [PMID: 32561559 DOI: 10.1126/sciimmunol.abb1025] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/22/2020] [Indexed: 12/11/2022]
Abstract
A fundamental challenge in vaccinology is learning how to induce durable antibody responses. Live viral vaccines induce antibody responses that last a lifetime, but those induced with subunit vaccines wane rapidly. Studies in mice and humans have established that long-lived plasma cells (LLPCs) in the bone marrow (BM) are critical mediators of durable antibody responses. Here, we present data that adjuvanting an HIV-1 clade C 1086.C-derived gp140 immunogen (Env) with a novel synthetic Toll-like receptor (TLR)-7/8 agonist named 3M-052 formulated in poly(lactic-co-glycolic)acid or PLGA nanoparticles (NPs) or with alum, either alone or in combination with a TLR-4 agonist GLA, induces notably high and persistent (up to ~1 year) frequencies of Env-specific LLPCs in the BM and serum antibody responses in rhesus macaques. Up to 36 and 18% of Env-specific cells among total IgG-secreting BM-resident plasma cells were detected at peak and termination, respectively. In contrast, adjuvanting Env with alum or GLA in NP induced significantly lower (~<100-fold) LLPC and antibody responses. Immune responses induced by 3M-052 were also significantly higher than those induced by a combination of TLR-7/8 (R848) and TLR-4 (MPL) agonists. Adjuvanting Env with 3M-052 also induced robust activation of blood monocytes, strong plasmablast responses in blood, germinal center B cells, T follicular helper (TFH) cells, and persistent Env-specific plasma cells in draining lymph nodes. Overall, these results demonstrate efficacy of 3M-052 in promoting high magnitude and durability of antibody responses via robust stimulation of innate immunity and BM-resident LLPCs.
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Affiliation(s)
- Sudhir Pai Kasturi
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Mohammed Ata Ur Rasheed
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA.,Division of Microbiology and Immunology and Rollins Research Center, Emory University, 1510 Clifton Road, Atlanta, GA, USA
| | | | - Mathew Pham
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Traci Legere
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Zarpheen Jinnah Sher
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Yevgeny Kovalenkov
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Sanjeev Gumber
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Jessica Y Huang
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Raphael Gottardo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - William Fulp
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Alicia Sato
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Sheetal Sawant
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA.,Department of Molecular Genetics and Microbiology and Department of Immunology, Duke University, NC, USA
| | - Sherry Stanfield-Oakley
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Nicole Yates
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA.,Department of Molecular Genetics and Microbiology and Department of Immunology, Duke University, NC, USA
| | - Celia LaBranche
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - S Munir Alam
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Georgia Tomaras
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA.,Department of Molecular Genetics and Microbiology and Department of Immunology, Duke University, NC, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA.,Department of Molecular Genetics and Microbiology and Department of Immunology, Duke University, NC, USA
| | - David Montefiori
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Jens Wrammert
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA
| | - Francois Villinger
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA.,New Iberia Research Center, University of Louisiana Lafayette, New Iberia, LA, USA
| | - Mark Tomai
- 3M Drug Delivery Systems, St. Paul, MN, USA
| | | | - Christopher B Fox
- Infectious Disease Research Institute, Seattle, WA, USA.,Department of Global Health, University of Washington, Seattle, WA, USA
| | - Steven G Reed
- Infectious Disease Research Institute, Seattle, WA, USA.,HDT Bio, Seattle, WA, USA
| | - Barton F Haynes
- Duke Human Vaccine Institute and Department of Surgery, Duke University Medical Center Durham, NC, USA
| | - Shane Crotty
- Division of Vaccine Discovery, La Jolla Institute of Immunology, La Jolla, CA, USA.,Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego (UCSD), La Jolla, CA, USA
| | - Rafi Ahmed
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA. .,Division of Microbiology and Immunology and Rollins Research Center, Emory University, 1510 Clifton Road, Atlanta, GA, USA
| | - Bali Pulendran
- Emory Vaccine Center and Yerkes National Primate Research Center, Emory University, 954, Gatewood Road, Atlanta, GA, USA. .,Departments of Pathology and Microbiology & Immunology, Institute for Immunity, Transplantation and Infection, Stanford University, Stanford, CA, USA
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32
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Eslamizar L, Petrovas C, Leggat DJ, Furr K, Lifton ML, Levine G, Ma S, Fletez-Brant C, Hoyland W, Prabhakaran M, Narpala S, Boswell K, Yamamoto T, Liao HX, Pickup D, Ramsburg E, Sutherland L, McDermott A, Roederer M, Montefiori D, Koup RA, Haynes BF, Letvin NL, Santra S. Recombinant MVA-prime elicits neutralizing antibody responses by inducing antigen-specific B cells in the germinal center. NPJ Vaccines 2021; 6:15. [PMID: 33495459 PMCID: PMC7835239 DOI: 10.1038/s41541-020-00277-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/07/2020] [Indexed: 01/23/2023] Open
Abstract
The RV144 HIV-1 vaccine trial has been the only clinical trial to date that has shown any degree of efficacy and associated with the presence of vaccine-elicited HIV-1 envelope-specific binding antibody and CD4+ T-cell responses. This trial also showed that a vector-prime protein boost combined vaccine strategy was better than when used alone. Here we have studied three different priming vectors-plasmid DNA, recombinant MVA, and recombinant VSV, all encoding clade C transmitted/founder Env 1086 C gp140, for priming three groups of six non-human primates each, followed by a protein boost with adjuvanted 1086 C gp120 protein. Our data showed that MVA-priming favors the development of higher antibody binding titers and neutralizing activity compared with other vectors. Analyses of the draining lymph nodes revealed that MVA-prime induced increased germinal center reactivity characterized by higher frequencies of germinal center (PNAhi) B cells, higher frequencies of antigen-specific B-cell responses as well as an increased frequency of the highly differentiated (ICOShiCD150lo) Tfh-cell subset.
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Affiliation(s)
- Leila Eslamizar
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Integrative Toxicology, Nonclinical Drug Safety, Boehringer Ingelheim Pharmaceuticals, Inc., 175 Briar Ridge Road, Ridgefield, CT, 06877, USA
| | - Constantinos Petrovas
- Vaccine Research Center, NIAID, NIH, Bethesda, MD, USA.
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland.
| | | | - Kathryn Furr
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Michelle L Lifton
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gail Levine
- Foundation for the National Institutes of Health, Bethesda, MD, USA
| | - Steven Ma
- Vaccine Research Center, NIAID, NIH, Bethesda, MD, USA
| | | | | | | | | | | | | | - Hua-Xin Liao
- Foundation for the National Institutes of Health, Bethesda, MD, USA
| | | | | | | | | | | | | | | | | | - Norman L Letvin
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sampa Santra
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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33
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Saunders KO, Pardi N, Parks R, Santra S, Mu Z, Sutherland L, Scearce R, Barr M, Eaton A, Hernandez G, Goodman D, Hogan MJ, Tombacz I, Gordon DN, Rountree RW, Wang Y, Lewis MG, Pierson TC, Barbosa C, Tam Y, Shen X, Ferrari G, Tomaras GD, Montefiori DC, Weissman D, Haynes BF. Lipid nanoparticle encapsulated nucleoside-modified mRNA vaccines elicit polyfunctional HIV-1 antibodies comparable to proteins in nonhuman primates. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020:2020.12.30.424745. [PMID: 33398289 PMCID: PMC7781333 DOI: 10.1101/2020.12.30.424745] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Development of an effective AIDS vaccine remains a challenge. Nucleoside-modified mRNAs formulated in lipid nanoparticles (mRNA-LNP) have proved to be a potent mode of immunization against infectious diseases in preclinical studies, and are being tested for SARS-CoV-2 in humans. A critical question is how mRNA-LNP vaccine immunogenicity compares to that of traditional adjuvanted protein vaccines in primates. Here, we found that mRNA-LNP immunization compared to protein immunization elicited either the same or superior magnitude and breadth of HIV-1 Env-specific polyfunctional antibodies. Immunization with mRNA-LNP encoding Zika premembrane and envelope (prM-E) or HIV-1 Env gp160 induced durable neutralizing antibodies for at least 41 weeks. Doses of mRNA-LNP as low as 5 μg were immunogenic in macaques. Thus, mRNA-LNP can be used to rapidly generate single or multi-component vaccines, such as sequential vaccines needed to protect against HIV-1 infection. Such vaccines would be as or more immunogenic than adjuvanted recombinant protein vaccines in primates.
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34
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Joachim A, Msafiri F, Onkar S, Munseri P, Aboud S, Lyamuya EF, Bakari M, Billings E, Robb ML, Wahren B, Mhalu FS, Sandström E, Rao M, Nilsson C, Biberfeld G. Frequent and Durable Anti-HIV Envelope VIV2 IgG Responses Induced by HIV-1 DNA Priming and HIV-MVA Boosting in Healthy Tanzanian Volunteers. Vaccines (Basel) 2020; 8:vaccines8040681. [PMID: 33202967 PMCID: PMC7711440 DOI: 10.3390/vaccines8040681] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 01/04/2023] Open
Abstract
We evaluated antibody responses to the human immunodeficiency virus (HIV) envelope variable regions 1 and 2 (V1V2) in 29 vaccinees who had received three HIV-1 DNA immunizations and two HIV-modified vaccinia virus Ankara (MVA) boosts in the phase I/II HIVIS03 vaccine trial. Twenty vaccinees received a third HIV-MVA boost after three years in the HIVIS06 trial. IgG and IgG antibody subclasses to gp70V1V2 proteins of HIV-1 A244, CN54, Consensus C, and Case A2 were analysed using an enzyme-linked immunosorbent assay (ELISA). Cyclic V2 peptides of A244, Consensus C, and MN were used in a surface plasmon resonance (SPR) assay. Four weeks after the second HIV-MVA, anti-V1V2 IgG antibodies to A244 were detected in 97% of HIVIS03 vaccinees, in 75% three years later, and in 95% after the third HIV-MVA. Anti-CN54 V1V2 IgG was detectable in 48% four weeks after the second HIV-MVA. The SPR data supported the findings. The IgG response was predominantly IgG1. Four weeks after the second HIV-MVA, 85% of vaccinees had IgG1 antibodies to V1V2 A244, which persisted in 25% for three-years. IgG3 and IgG4 antibodies to V1V2 A244 were rare. In conclusion, the HIV-DNA/MVA vaccine regimen induced durable V1V2 IgG antibody responses in a high proportion of vaccinees.
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Affiliation(s)
- Agricola Joachim
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (F.M.); (S.A.); (E.F.L.); (F.S.M.)
- Correspondence:
| | - Frank Msafiri
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (F.M.); (S.A.); (E.F.L.); (F.S.M.)
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, 17177 Stockholm, Sweden;
| | - Sayali Onkar
- The US Military HIV Research Program, The Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA; (S.O.); (E.B.)
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.L.R.); (M.R.)
| | - Patricia Munseri
- Department of Internal Medicine, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (P.M.); (M.B.)
| | - Said Aboud
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (F.M.); (S.A.); (E.F.L.); (F.S.M.)
| | - Eligius F. Lyamuya
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (F.M.); (S.A.); (E.F.L.); (F.S.M.)
| | - Muhammad Bakari
- Department of Internal Medicine, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (P.M.); (M.B.)
| | - Erik Billings
- The US Military HIV Research Program, The Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA; (S.O.); (E.B.)
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.L.R.); (M.R.)
| | - Merlin L. Robb
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.L.R.); (M.R.)
- Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA
| | - Britta Wahren
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 17177 Stockholm, Sweden;
| | - Fred S. Mhalu
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001 Dar es Salaam, Tanzania; (F.M.); (S.A.); (E.F.L.); (F.S.M.)
| | - Eric Sandström
- Venhälsan, Karolinska Institutet at Södersjukhuset, 11883 Stockholm, Sweden;
| | - Mangala Rao
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.L.R.); (M.R.)
| | - Charlotta Nilsson
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, 17177 Stockholm, Sweden;
- Department of Microbiology, Public Health Agency of Sweden, 17182 Solna, Sweden
| | - Gunnel Biberfeld
- Department of Global Public Health, Karolinska Institutet, 17177 Stockholm, Sweden;
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35
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Scheepers C, Bekker V, Anthony C, Richardson SI, Oosthuysen B, Moyo T, Kgagudi P, Kitchin D, Nonyane M, York T, Mielke D, Mabvakure BM, Sheng Z, Lambson BE, Ismail A, Garrett NJ, Abdool Karim SS, Shapiro L, Williamson C, Morris L, Moore PL. Antibody Isotype Switching as a Mechanism to Counter HIV Neutralization Escape. Cell Rep 2020; 33:108430. [PMID: 33238131 PMCID: PMC7723817 DOI: 10.1016/j.celrep.2020.108430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/18/2020] [Accepted: 11/02/2020] [Indexed: 02/04/2023] Open
Abstract
Neutralizing antibodies (nAbs) to highly variable viral pathogens show remarkable diversification during infection, resulting in an “arms race” between virus and host. Studies of nAb lineages have shown how somatic hypermutation (SHM) in immunoglobulin (Ig)-variable regions enables maturing antibodies to neutralize emerging viral escape variants. However, the Ig-constant region (which determines isotype) can also influence epitope recognition. Here, we use longitudinal deep sequencing of an HIV-directed nAb lineage, CAP88-CH06, and identify several co-circulating isotypes (IgG3, IgG1, IgA1, IgG2, and IgA2), some of which share identical variable regions. First, we show that IgG3 and IgA1 isotypes are better able to neutralize longitudinal autologous viruses and epitope mutants than can IgG1. Second, detrimental class-switch recombination (CSR) events that resulted in reduced neutralization can be rescued by further CSR, which we term “switch redemption.” Thus, CSR represents an additional immunological mechanism to counter viral escape from HIV-specific antibody responses. Scheepers et al. show within an HIV-specific antibody lineage that isotypes confer variable ability to neutralize emerging viral escape variants. This suggests that class switching, in addition to somatic hypermutation of immunoglobulin-variable regions, contributes to antibody maturation during infection.
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Affiliation(s)
- Cathrine Scheepers
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Valerie Bekker
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa
| | - Colin Anthony
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa
| | - Simone I Richardson
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Brent Oosthuysen
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa
| | - Thandeka Moyo
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Prudence Kgagudi
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa
| | - Dale Kitchin
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Molati Nonyane
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa
| | - Talita York
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa
| | - Dieter Mielke
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa
| | - Batsirai M Mabvakure
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Zizhang Sheng
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA; Zuckerman Brain Mind Behaviour Institute, Columbia University, New York, NY 10027, USA
| | - Bronwen E Lambson
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Arshad Ismail
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa
| | - Nigel J Garrett
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa
| | - Salim S Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa; Department of Epidemiology, Columbia University, New York, NY 10032, USA
| | - Lawrence Shapiro
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA; Zuckerman Brain Mind Behaviour Institute, Columbia University, New York, NY 10027, USA
| | - Carolyn Williamson
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa
| | - Lynn Morris
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa.
| | - Penny L Moore
- Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa.
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36
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Dashti A, Waller C, Mavigner M, Schoof N, Bar KJ, Shaw GM, Vanderford TH, Liang S, Lifson JD, Dunham RM, Ferrari G, Tuyishime M, Lam CYK, Nordstrom JL, Margolis DM, Silvestri G, Chahroudi A. SMAC Mimetic Plus Triple-Combination Bispecific HIVxCD3 Retargeting Molecules in SHIV.C.CH505-Infected, Antiretroviral Therapy-Suppressed Rhesus Macaques. J Virol 2020; 94:e00793-20. [PMID: 32817214 PMCID: PMC7565632 DOI: 10.1128/jvi.00793-20] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 08/06/2020] [Indexed: 12/21/2022] Open
Abstract
The "shock-and-kill" human immunodeficiency virus type 1 (HIV-1) cure strategy involves latency reversal followed by immune-mediated clearance of infected cells. We have previously shown that activation of the noncanonical NF-κB pathway using an inhibitor of apoptosis (IAP), AZD5582, reverses HIV/simian immunodeficiency virus (SIV) latency. Here, we combined AZD5582 with bispecific HIVxCD3 DART molecules to determine the impact of this approach on persistence. Rhesus macaques (RMs) (n = 13) were infected with simian/human immunodeficiency virus SHIV.C.CH505.375H.dCT, and triple antiretroviral therapy (ART) was initiated after 16 weeks. After 42 weeks of ART, 8 RMs received a cocktail of 3 HIVxCD3 DART molecules having human A32, 7B2, or PGT145 anti-HIV-1 envelope (Env) specificities paired with a human anti-CD3 specificity that is rhesus cross-reactive. The remaining 5 ART-suppressed RMs served as controls. For 10 weeks, a DART molecule cocktail was administered weekly (each molecule at 1 mg/kg of body weight), followed 2 days later by AZD5582 (0.1 mg/kg). DART molecule serum concentrations were well above those considered adequate for redirected killing activity against Env-expressing target cells but began to decline after 3 to 6 weekly doses, coincident with the development of antidrug antibodies (ADAs) against each of the DART molecules. The combination of AZD5582 and the DART molecule cocktail did not increase on-ART viremia or cell-associated SHIV RNA in CD4+ T cells and did not reduce the viral reservoir size in animals on ART. The lack of latency reversal in the model used in this study may be related to low pre-ART viral loads (median, <105 copies/ml) and low preintervention reservoir sizes (median, <102 SHIV DNA copies/million blood CD4+ T cells). Future studies to assess the efficacy of Env-targeting DART molecules or other clearance agents to reduce viral reservoirs after latency reversal may be more suited to models that better minimize immunogenicity and have a greater viral burden.IMPORTANCE The most significant barrier to an HIV-1 cure is the existence of the latently infected viral reservoir that gives rise to rebound viremia upon cessation of ART. Here, we tested a novel combination approach of latency reversal with AZD5582 and clearance with bispecific HIVxCD3 DART molecules in SHIV.C.CH505-infected, ART-suppressed rhesus macaques. We demonstrate that the DART molecules were not capable of clearing infected cells in vivo, attributed to the lack of quantifiable latency reversal in this model with low levels of persistent SHIV DNA prior to intervention as well as DART molecule immunogenicity.
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Affiliation(s)
- Amir Dashti
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Chevaughn Waller
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Maud Mavigner
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
- Center for Childhood Infections and Vaccines of Children's Healthcare of Atlanta and Emory University, Atlanta, Georgia, USA
| | - Nils Schoof
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Katharine J Bar
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - George M Shaw
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Thomas H Vanderford
- Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA
| | - Shan Liang
- Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA
| | - Jeffrey D Lifson
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Richard M Dunham
- HIV Drug Discovery, ViiV Healthcare, Research Triangle Park, North Carolina, USA
- UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Marina Tuyishime
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | | | | | - David M Margolis
- UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Guido Silvestri
- Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA
- Emory Vaccine Center, Emory University, Atlanta, Georgia, USA
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Ann Chahroudi
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
- Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA
- Center for Childhood Infections and Vaccines of Children's Healthcare of Atlanta and Emory University, Atlanta, Georgia, USA
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37
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Tuyishime M, Garrido C, Jha S, Moeser M, Mielke D, LaBranche C, Montefiori D, Haynes BF, Joseph S, Margolis DM, Ferrari G. Improved killing of HIV-infected cells using three neutralizing and non-neutralizing antibodies. J Clin Invest 2020; 130:5157-5170. [PMID: 32584790 PMCID: PMC7524508 DOI: 10.1172/jci135557] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 06/24/2020] [Indexed: 02/06/2023] Open
Abstract
The correlation of HIV-specific antibody-dependent cellular cytotoxicity (ADCC) responses with protection from and delayed progression of HIV-1 infection provides a rationale to leverage ADCC-mediating antibodies for treatment purposes. We evaluated ADCC mediated by different combinations of 2 to 6 neutralizing and non-neutralizing anti-HIV-1 Envelope (Env) mAbs, using concentrations ≤ 1 μg/mL, to identify combinations effective at targeting latent reservoir HIV-1 viruses from 10 individuals. We found that within 2 hours, combinations of 3 mAbs mediated more than 30% killing of HIV-infected primary CD4+ T cells in the presence of autologous NK cells, with the combination of A32 (C1C2), DH511.2K3 (MPER), and PGT121 (V3) mAbs being the most effective. Increasing the incubation of target and effector cells in the presence of mAb combinations from 2 to 24 hours resulted in increased specific killing of infected cells, even with neutralization-resistant viruses. The same combination eliminated reactivated latently HIV-1-infected cells in an ex vivo quantitative viral outgrowth assay. Therefore, administration of a combination of 3 mAbs should be considered in planning in vivo studies seeking to eliminate persistently HIV-1-infected cells.
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Affiliation(s)
- Marina Tuyishime
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | | | - Shalini Jha
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Matt Moeser
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Dieter Mielke
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Celia LaBranche
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - David Montefiori
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Barton F. Haynes
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine and
- Department of Immunology, Duke University Medical Center, Durham, North Carolina, USA
| | - Sarah Joseph
- UNC HIV Cure Center and
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Microbiology and Immunology and
| | - David M. Margolis
- UNC HIV Cure Center and
- Department of Microbiology and Immunology and
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Guido Ferrari
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA
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38
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Sherburn R, Tolbert WD, Gottumukkala S, Beaudoin-Bussières G, Finzi A, Pazgier M. Effects of gp120 Inner Domain (ID2) Immunogen Doses on Elicitation of Anti-HIV-1 Functional Fc-Effector Response to C1/C2 (Cluster A) Epitopes in Mice. Microorganisms 2020; 8:microorganisms8101490. [PMID: 32998443 PMCID: PMC7650682 DOI: 10.3390/microorganisms8101490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 01/13/2023] Open
Abstract
Fc-mediated effector functions of antibodies, including antibody-dependent cytotoxicity (ADCC), have been shown to contribute to vaccine-induced protection from HIV-1 infection, especially those directed against non-neutralizing, CD4 inducible (CD4i) epitopes within the gp120 constant 1 and 2 regions (C1/C2 or Cluster A epitopes). However, recent passive immunization studies have not been able to definitively confirm roles for these antibodies in HIV-1 prevention mostly due to the complications of cross-species Fc–FcR interactions and suboptimal dosing strategies. Here, we use our stabilized gp120 Inner domain (ID2) immunogen that displays the Cluster A epitopes within a minimal structural unit of HIV-1 Env to investigate an immunization protocol that induces a fine-tuned antibody repertoire capable of an effective Fc-effector response. This includes the generation of isotypes and the enhanced antibody specificity known to be vital for maximal Fc-effector activities, while minimizing the induction of isotypes know to be detrimental for these functions. Although our studies were done in in BALB/c mice we conclude that when optimally titrated for the species of interest, ID2 with GLA-SE adjuvant will elicit high titers of antibodies targeting the Cluster A region with potent Fc-mediated effector functions, making it a valuable immunogen candidate for testing an exclusive role of non-neutralizing antibody response in HIV-1 protection in vaccine settings.
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Affiliation(s)
- Rebekah Sherburn
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4712, USA; (R.S.); (W.D.T.); (S.G.)
| | - William D. Tolbert
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4712, USA; (R.S.); (W.D.T.); (S.G.)
| | - Suneetha Gottumukkala
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4712, USA; (R.S.); (W.D.T.); (S.G.)
| | | | - Andrés Finzi
- Centre de Recherche du CHUM, Montreal, QC H2X 0A9, Canada; (G.B.-B.); (A.F.)
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 2B4, Canada
| | - Marzena Pazgier
- Infectious Disease Division, Department of Medicine of Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4712, USA; (R.S.); (W.D.T.); (S.G.)
- Correspondence: ; Tel.: +301-295-3291; Fax: +301-295-355
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Wise MC, Xu Z, Tello-Ruiz E, Beck C, Trautz A, Patel A, Elliott ST, Chokkalingam N, Kim S, Kerkau MG, Muthumani K, Jiang J, Fisher PD, Ramos SJ, Smith TR, Mendoza J, Broderick KE, Montefiori DC, Ferrari G, Kulp DW, Humeau LM, Weiner DB. In vivo delivery of synthetic DNA-encoded antibodies induces broad HIV-1-neutralizing activity. J Clin Invest 2020; 130:827-837. [PMID: 31697648 DOI: 10.1172/jci132779] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/24/2019] [Indexed: 02/06/2023] Open
Abstract
Interventions to prevent HIV-1 infection and alternative tools in HIV cure therapy remain pressing goals. Recently, numerous broadly neutralizing HIV-1 monoclonal antibodies (bNAbs) have been developed that possess the characteristics necessary for potential prophylactic or therapeutic approaches. However, formulation complexities, especially for multiantibody deliveries, long infusion times, and production issues could limit the use of these bNAbs when deployed, globally affecting their potential application. Here, we describe an approach utilizing synthetic DNA-encoded monoclonal antibodies (dmAbs) for direct in vivo production of prespecified neutralizing activity. We designed 16 different bNAbs as dmAb cassettes and studied their activity in small and large animals. Sera from animals administered dmAbs neutralized multiple HIV-1 isolates with activity similar to that of their parental recombinant mAbs. Delivery of multiple dmAbs to a single animal led to increased neutralization breadth. Two dmAbs, PGDM1400 and PGT121, were advanced into nonhuman primates for study. High peak-circulating levels (between 6 and 34 μg/ml) of these dmAbs were measured, and the sera of all animals displayed broad neutralizing activity. The dmAb approach provides an important local delivery platform for the in vivo generation of HIV-1 bNAbs and for other infectious disease antibodies.
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Affiliation(s)
- Megan C Wise
- Inovio Pharmaceuticals, Plymouth Meeting, Pennsylvania, USA
| | - Ziyang Xu
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA.,Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Edgar Tello-Ruiz
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | | | - Aspen Trautz
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Ami Patel
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Sarah Tc Elliott
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Neethu Chokkalingam
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Sophie Kim
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | | | - Kar Muthumani
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Jingjing Jiang
- Inovio Pharmaceuticals, Plymouth Meeting, Pennsylvania, USA
| | - Paul D Fisher
- Inovio Pharmaceuticals, Plymouth Meeting, Pennsylvania, USA
| | | | | | - Janess Mendoza
- Inovio Pharmaceuticals, Plymouth Meeting, Pennsylvania, USA
| | | | - David C Montefiori
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
| | | | - Daniel W Kulp
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | | | - David B Weiner
- Vaccine and Immunotherapy Center, The Wistar Institute, Philadelphia, Pennsylvania, USA
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Bartlett ML, Griffin DE. Acute RNA Viral Encephalomyelitis and the Role of Antibodies in the Central Nervous System. Viruses 2020; 12:v12090988. [PMID: 32899509 PMCID: PMC7551998 DOI: 10.3390/v12090988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/02/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022] Open
Abstract
Acute RNA viral encephalomyelitis is a serious complication of numerous virus infections. Antibodies in the cerebral spinal fluid (CSF) are correlated to better outcomes, and there is substantive evidence of antibody secreting cells (ASCs) entering the central nervous system (CNS) and contributing to resolution of infection. Here, we review the RNA viruses known to cause acute viral encephalomyelitis with mechanisms of control that require antibody or ASCs. We compile the cytokines, chemokines, and surface receptors associated with ASC recruitment to the CNS after infection and compare known antibody-mediated mechanisms as well as potential noncytolytic mechanisms for virus control. These non-canonical functions of antibodies may be employed in the CNS to protect precious non-renewable neurons. Understanding the immune-specialized zone of the CNS is essential for the development of effective treatments for acute encephalomyelitis caused by RNA viruses.
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41
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Hessell AJ, Powell R, Jiang X, Luo C, Weiss S, Dussupt V, Itri V, Fox A, Shapiro MB, Pandey S, Cheever T, Fuller DH, Park B, Krebs SJ, Totrov M, Haigwood NL, Kong XP, Zolla-Pazner S. Multimeric Epitope-Scaffold HIV Vaccines Target V1V2 and Differentially Tune Polyfunctional Antibody Responses. Cell Rep 2020; 28:877-895.e6. [PMID: 31340151 DOI: 10.1016/j.celrep.2019.06.074] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/12/2019] [Accepted: 06/21/2019] [Indexed: 11/24/2022] Open
Abstract
The V1V2 region of the HIV-1 envelope is the target of several broadly neutralizing antibodies (bNAbs). Antibodies to V1V2 elicited in the RV144 clinical trial correlated with a reduced risk of HIV infection, but these antibodies were without broad neutralizing activity. Antibodies targeting V1V2 also correlated with a reduced viral load in immunized macaques challenged with simian immunodeficiency virus (SIV) or simian/human immunodeficiency virus (SHIV). To focus immune responses on V1V2, we engrafted the native, glycosylated V1V2 domain onto five different multimeric scaffold proteins and conducted comparative immunogenicity studies in macaques. Vaccinated macaques developed high titers of plasma and mucosal antibodies that targeted structurally distinct V1V2 epitopes. Plasma antibodies displayed limited neutralizing activity but were functionally active for ADCC and phagocytosis, which was detectable 1-2 years after immunizations ended. This study demonstrates that multivalent, glycosylated V1V2-scaffold protein immunogens focus the antibody response on V1V2 and are differentially effective at inducing polyfunctional antibodies with characteristics associated with protection.
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Affiliation(s)
- Ann J Hessell
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA.
| | - Rebecca Powell
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA
| | - Christina Luo
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA
| | - Svenja Weiss
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Vincent Dussupt
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA
| | - Vincenza Itri
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Alisa Fox
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Mariya B Shapiro
- Molecular Microbiology and Immunology, School of Medicine, Oregon Health and Science University, Portland, OR 97239
| | - Shilpi Pandey
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA
| | - Tracy Cheever
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA
| | - Deborah H Fuller
- Department of Microbiology, University of Washington School of Medicine, Seattle, WA 98195, USA; Washington National Primate Research Center, Seattle, WA 98195, USA
| | - Byung Park
- Primate Genetics Program, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA
| | - Shelly J Krebs
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA
| | | | - Nancy L Haigwood
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA; Molecular Microbiology and Immunology, School of Medicine, Oregon Health and Science University, Portland, OR 97239.
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA.
| | - Susan Zolla-Pazner
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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An HIV Vaccine Targeting the V2 Region of the HIV Envelope Induces a Highly Durable Polyfunctional Fc-Mediated Antibody Response in Rhesus Macaques. J Virol 2020; 94:JVI.01175-20. [PMID: 32554699 DOI: 10.1128/jvi.01175-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 12/20/2022] Open
Abstract
The HIV vaccine field now recognizes the potential importance of generating polyfunctional antibodies (Abs). The only clinical HIV vaccine trial to date to show significant efficacy (RV144) found that reduced infection rates correlated with the level of nonneutralizing Abs specific for the V2 region of the envelope glycoprotein. We have conducted a comprehensive preclinical reverse vaccinology-based vaccine program that has included the design and production and testing of numerous scaffolded V2 region immunogens. The most immunogenic vaccine regimen in nonhuman primates among those studied as part of this program consisted of a cocktail of three immunogens presenting V2 from different viruses and clades in the context of different scaffolds. Presently we demonstrate that the V2-specific Ab response from this regimen was highly durable and functionally diverse for the duration of the study (25 weeks after the final immunization). The total IgG binding response at this late time point exhibited only an ∼5× reduction in potency. Three immunizations appeared essential for the elicitation of a strong Ab-dependent cellular cytotoxicity (ADCC) response for all animals, as opposed to the Ab-dependent cellular phagocytosis (ADCP) and virus capture responses, which were comparably potent after only 2 immunizations. All functionalities measured were highly durable through the study period. Therefore, testing this vaccine candidate for its protective capacity is warranted.IMPORTANCE The only HIV vaccine trial for which protective efficacy was detected correlated this efficacy with V2-specific Abs that were effectively nonneutralizing. This result has fueled a decade of HIV vaccine research focused on designing an HIV vaccine capable of eliciting V2-focused, polyfunctional Abs that effectively bind HIV and trigger various leukocytes to kill the virus and restrict viral spread. From the numerous vaccine candidates designed and tested as part of our V2-focused preclinical vaccine program, we have identified immunogens and a vaccine regimen that induces a highly durable and polyfunctional V2-focused Ab response in rhesus macaques, described herein.
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Natali EN, Principato S, Ferlicca F, Bianchi F, Fontana LE, Faleri A, Pansegrau W, Surdo PL, Bartolini E, Santini L, Brunelli B, Giusti F, Veggi D, Ferlenghi I, Norais N, Scarselli M. Synergic complement-mediated bactericidal activity of monoclonal antibodies with distinct specificity. FASEB J 2020; 34:10329-10341. [PMID: 32725956 DOI: 10.1096/fj.201902795r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 04/30/2020] [Accepted: 05/20/2020] [Indexed: 01/24/2023]
Abstract
The classical complement pathway is triggered when antigen-bound immunoglobulins bind to C1q through their Fc region. While C1q binds to a single Fc with low affinity, a higher avidity stable binding of two or more of C1q globular heads initiates the downstream reactions of the complement cascade ultimately resulting in bacteriolysis. Synergistic bactericidal activity has been demonstrated when monoclonal antibodies recognize nonoverlapping epitopes of the same antigen. The aim of the present work was to investigate the synergistic effect between antibodies directed toward different antigens. To this purpose, we investigated the bactericidal activity induced by combinations of monoclonal antibodies (mAbs) raised against factor H-binding protein (fHbp) and Neisserial Heparin-Binding Antigen (NHBA), two major antigens included in Bexsero, the vaccine against Meningococcus B, for prevention from this devastating disease in infants and adolescents. Collectively, our results show that mAbs recognizing different antigens can synergistically activate complement even when each single Mab is not bactericidal, reinforcing the evidence that cooperative immunity induced by antigen combinations can represent a remarkable added value of multicomponent vaccines. Our study also shows that the synergistic effect of antibodies is modulated by the nature of the respective epitopes, as well as by the antigen density on the bacterial cell surface.
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Affiliation(s)
- Eriberto Noel Natali
- GSK, Siena, Italy.,CERM, Department of Chemistry, University of Florence, Florence, Italy
| | - Silvia Principato
- GSK, Siena, Italy.,Department of Biological Sciences, University of Siena, Siena, Italy
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44
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Tolbert WD, Sherburn R, Gohain N, Ding S, Flinko R, Orlandi C, Ray K, Finzi A, Lewis GK, Pazgier M. Defining rules governing recognition and Fc-mediated effector functions to the HIV-1 co-receptor binding site. BMC Biol 2020; 18:91. [PMID: 32693837 PMCID: PMC7374964 DOI: 10.1186/s12915-020-00819-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 06/22/2020] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The binding of HIV-1 Envelope glycoproteins (Env) to host receptor CD4 exposes vulnerable conserved epitopes within the co-receptor binding site (CoRBS) which are required for the engagement of either CCR5 or CXCR4 co-receptor to allow HIV-1 entry. Antibodies against this region have been implicated in the protection against HIV acquisition in non-human primate (NHP) challenge studies and found to act synergistically with antibodies of other specificities to deliver effective Fc-mediated effector function against HIV-1-infected cells. Here, we describe the structure and function of N12-i2, an antibody isolated from an HIV-1-infected individual, and show how the unique structural features of this antibody allow for its effective Env recognition and Fc-mediated effector function. RESULTS N12-i2 binds within the CoRBS utilizing two adjacent sulfo-tyrosines (TYS) for binding, one of which binds to a previously unknown TYS binding pocket formed by gp120 residues of high sequence conservation among HIV-1 strains. Structural alignment with gp120 in complex with the co-receptor CCR5 indicates that the new pocket corresponds to TYS at position 15 of CCR5. In addition, structure-function analysis of N12-i2 and other CoRBS-specific antibodies indicates a link between modes of antibody binding within the CoRBS and Fc-mediated effector activities. The efficiency of antibody-dependent cellular cytotoxicity (ADCC) correlated with both the level of antibody binding and the mode of antibody attachment to the epitope region, specifically with the way the Fc region was oriented relative to the target cell surface. Antibodies with poor Fc access mediated the poorest ADCC whereas those with their Fc region readily accessible for interaction with effector cells mediated the most potent ADCC. CONCLUSION Our data identify a previously unknown binding site for TYS within the assembled CoRBS of the HIV-1 virus. In addition, our combined structural-modeling-functional analyses provide new insights into mechanisms of Fc-effector function of antibodies against HIV-1, in particular, how antibody binding to Env antigen affects the efficiency of ADCC response.
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Affiliation(s)
- William D Tolbert
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD, 20814-4712, USA
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
| | - Rebekah Sherburn
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD, 20814-4712, USA
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
| | - Neelakshi Gohain
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
| | - Shilei Ding
- Centre de Recherche du CHUM, Université de Montréal, Montreal, Quebec, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
| | - Robin Flinko
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
| | - Chiara Orlandi
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
| | - Krishanu Ray
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD, 20814-4712, USA
| | - Andrés Finzi
- Centre de Recherche du CHUM, Université de Montréal, Montreal, Quebec, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, Quebec, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada
| | - George K Lewis
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
| | - Marzena Pazgier
- Infectious Disease Division, Department of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD, 20814-4712, USA.
- Division of Vaccine Research of Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA.
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45
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De Rosa SC, Edupuganti S, Huang Y, Han X, Elizaga M, Swann E, Polakowski L, Kalams SA, Keefer MC, Maenza J, Lu Y, Wise MC, Yan J, Morrow MP, Khan AS, Boyer JD, Humeau L, White S, Pensiero M, Sardesai NY, Bagarazzi ML, Weiner DB, Ferrari G, Tomaras GD, Montefiori DC, Corey L, McElrath MJ. Robust antibody and cellular responses induced by DNA-only vaccination for HIV. JCI Insight 2020; 5:137079. [PMID: 32437332 PMCID: PMC7406303 DOI: 10.1172/jci.insight.137079] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/13/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUNDHVTN 098, a randomized, double-blind, placebo-controlled trial, evaluated the safety, tolerability, and immunogenicity of PENNVAX-GP HIV DNA vaccine, administered with or without plasmid IL-12 (pIL-12), via intradermal (ID) or intramuscular (IM) electroporation (EP) in healthy, HIV-uninfected adults. The study tested whether PENNVAX-GP delivered via ID/EP at one-fifth the dose could elicit equivalent immune responses to delivery via IM/EP and whether inclusion of pIL-12 provided additional benefit.METHODSParticipants received DNA encoding HIV-1 env/gag/pol in 3 groups: 1.6 mg ID (ID no IL-12 group, n = 20), 1.6 mg ID + 0.4 mg pIL-12 (ID + IL-12 group, n = 30), 8 mg IM + 1 mg pIL-12 (IM + IL-12 group, n = 30), or placebo (n = 9) via EP at 0, 1, 3, and 6 months. Results of cellular and humoral immunogenicity assessments are reported.RESULTSFollowing vaccination, the frequency of responders (response rate) to any HIV protein based on CD4+ T cells expressing IFN-γ or IL-2 was 96% for both the ID + IL-12 and IM + IL-12 groups; CD8+ T cell response rates were 64% and 44%, respectively. For ID delivery, the inclusion of pIL-12 increased CD4+ T cell response rate from 56% to 96%. The frequency of responders was similar (≥90%) for IgG binding antibody to gp140 consensus Env across all groups, but the magnitude was higher in the ID + IL-12 group compared with the IM + IL-12 group.CONCLUSIONPENNVAX-GP DNA induced robust cellular and humoral immune responses, demonstrating that immunogenicity of DNA vaccines can be enhanced by EP route and inclusion of pIL-12. ID/EP was dose sparing, inducing equivalent, or in some aspects superior, immune responses compared with IM/EP.TRIAL REGISTRATIONClinicalTrials.gov NCT02431767.FUNDINGThis work was supported by National Institute of Allergy and Infectious Diseases (NIAID), U.S. Public Health Service grants, an HIV Vaccine Design and Development Team contract, Integrated Preclinical/Clinical AIDS Vaccine Development Program, and an NIH award.
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Affiliation(s)
- Stephen C. De Rosa
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Laboratory Medicine, University of Washington, Seattle, Washington, USA
| | - Srilatha Edupuganti
- Division of Infectious Disease, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Yunda Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Xue Han
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Marnie Elizaga
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Edith Swann
- Division of AIDS, NIH, Bethesda, Maryland, USA
| | | | | | - Michael C. Keefer
- Department of Medicine, University of Rochester School of Medicine & Dentistry, Rochester, New York, USA
| | - Janine Maenza
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Yiwen Lu
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Megan C. Wise
- Inovio Pharmaceuticals Inc., Plymouth Meeting, Pennsylvania, USA
| | - Jian Yan
- Inovio Pharmaceuticals Inc., Plymouth Meeting, Pennsylvania, USA
| | | | - Amir S. Khan
- Inovio Pharmaceuticals Inc., Plymouth Meeting, Pennsylvania, USA
| | - Jean D. Boyer
- Inovio Pharmaceuticals Inc., Plymouth Meeting, Pennsylvania, USA
| | - Laurent Humeau
- Inovio Pharmaceuticals Inc., Plymouth Meeting, Pennsylvania, USA
| | - Scott White
- Inovio Pharmaceuticals Inc., Plymouth Meeting, Pennsylvania, USA
| | | | | | | | | | - Guido Ferrari
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Georgia D. Tomaras
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - David C. Montefiori
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Lawrence Corey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - M. Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Laboratory Medicine, University of Washington, Seattle, Washington, USA.,Department of Global Health, University of Washington, Seattle, Washington, USA.,Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
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46
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Fisher KL, Mabuka JM, Sivro A, Ngcapu S, Passmore JAS, Osman F, Ndlovu B, Abdool Karim Q, Abdool Karim SS, Chung AW, Baxter C, Archary D. Topical Tenofovir Pre-exposure Prophylaxis and Mucosal HIV-Specific Fc-Mediated Antibody Activities in Women. Front Immunol 2020; 11:1274. [PMID: 32733445 PMCID: PMC7357346 DOI: 10.3389/fimmu.2020.01274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 05/20/2020] [Indexed: 01/07/2023] Open
Abstract
The RV144 HIV-vaccine trial highlighted the importance of envelope-specific non-neutralizing antibody (nNAb) Fc-mediated functions as immune correlates of reduced risk of infection. Since pre-exposure prophylaxis (PrEP) and HIV-vaccines are being used as a combination prevention strategy in at risk populations, the effects of PrEP on nNAb functions both mucosally and systemically remain undefined. Previous animal and human studies demonstrated reduced HIV-specific antibody binding avidity post-HIV seroconversion with PrEP, which in turn may affect antibody functionality. In seroconverters from the CAPRISA 004 tenofovir gel trial, we previously reported significantly higher detection and titres of HIV-specific binding antibodies in the plasma and genital tract (GT) that distinguished the tenofovir from the placebo arm. We hypothesized that higher HIV-specific antibody titres and detection reflected corresponding increased antibody-dependent neutrophil-mediated phagocytosis (ADNP) and NK-cell-activated antibody-dependent cellular cytotoxic (ADCC) activities. HIV-specific V1V2-gp70, gp120, gp41, p66, and p24 antibodies in GT and plasma samples of 48 seroconverters from the CAPRISA 004 tenofovir gel trial were tested for ADCP and ADCC at 3, 6- and 12-months post-HIV-infection. GT gp41- and p24-specific ADNP were significantly higher in the tenofovir than the placebo arm at 6 and 12 months respectively (p < 0.05). Plasma gp120-, gp41-, and p66-specific ADNP, and GT gp41-specific ADCC increased significantly over time (p < 0.05) in the tenofovir arm. In the tenofovir arm only, significant inverse correlations were observed between gp120-specific ADCC and gp120-antibody titres (r = −0.54; p = 0.009), and gp41-specific ADNP and gp41-specific antibody titres at 6 months post-infection (r = −0.50; p = 0.015). In addition, in the tenofovir arm, gp41-specific ADCC showed significant direct correlations between the compartments (r = 0.53; p = 0.045). Certain HIV-specific nNAb activities not only dominate specific immunological compartments but can also exhibit diverse functions within the same compartment. Our previous findings of increased HIV specific antibody detection and titres in women who used tenofovir gel, and the limited differences in nNAb activities between the arms, suggest that prior PrEP did not modulate these nNAb functions post-HIV seroconversion. Together these data provide insight into envelope-specific-nNAb Fc-mediated functions at the site of exposure which may inform on ensuing immunity during combination HIV prevention strategies including PrEP and HIV vaccines.
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Affiliation(s)
- Kimone Leigh Fisher
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa
| | - Jennifer M Mabuka
- Africa Health Research Institute, University of KwaZulu-Natal, Durban, South Africa.,HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Aida Sivro
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa
| | - Sinaye Ngcapu
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa
| | - Jo-Ann Shelley Passmore
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, and National Health Laboratory Service, Cape Town, South Africa
| | - Farzana Osman
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa
| | - Bongiwe Ndlovu
- HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Quarraisha Abdool Karim
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States
| | - Salim S Abdool Karim
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States
| | - Amy W Chung
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Cheryl Baxter
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Department of Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Derseree Archary
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.,Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa
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47
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Recognition Patterns of the C1/C2 Epitopes Involved in Fc-Mediated Response in HIV-1 Natural Infection and the RV114 Vaccine Trial. mBio 2020; 11:mBio.00208-20. [PMID: 32605979 PMCID: PMC7327165 DOI: 10.1128/mbio.00208-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Antibodies (Abs) specific for CD4-induced envelope (Env) epitopes within constant region 1 and 2 (C1/C2) were induced in the RV144 vaccine trial, where antibody-dependent cellular cytotoxicity (ADCC) correlated with reduced risk of HIV-1 infection. We combined X-ray crystallography and fluorescence resonance energy transfer-fluorescence correlation spectroscopy to describe the molecular basis for epitopes of seven RV144 Abs and compared them to A32 and C11, C1/C2 Abs induced in HIV infection. Our data indicate that most vaccine Abs recognize the 7-stranded β-sandwich of gp120, a unique hybrid epitope bridging A32 and C11 binding sites. Although primarily directed at the 7-stranded β-sandwich, some accommodate the gp120 N terminus in C11-bound 8-stranded conformation and therefore recognize a broader range of CD4-triggered Env conformations. Our data also suggest that Abs of RV144 and RV305, the RV144 follow-up study, although likely initially induced by the ALVAC-HIV prime encoding full-length gp120, matured through boosting with truncated AIDSVAX gp120 variants.IMPORTANCE Antibody-dependent cellular cytotoxicity (ADCC) correlated with a reduced risk of infection from HIV-1 in the RV144 vaccine trial, the only HIV-1 vaccine trial to date to show any efficacy. Antibodies specific for CD4-induced envelope (Env) epitopes within constant region 1 and 2 (cluster A region) were induced in the RV144 trial and their ADCC activities were implicated in the vaccine efficacy. We present structural analyses of the antigen epitope targets of several RV144 antibodies specific for this region and C11, an antibody induced in natural infection, to show what the differences are in epitope specificities, mechanism of antigen recognition, and ADCC activities of antibodies induced by vaccination and during the course of HIV infection. Our data suggest that the truncated AIDSVAX gp120 variants used in the boost of the RV144 regimen may have shaped the vaccine response to this region, which could also have contributed to vaccine efficacy.
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48
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Lewis PE, Poteet EC, Liu D, Chen C, LaBranche CC, Stanfield-Oakley SA, Montefiori DC, Ferrari G, Yao Q. CTLA-4 Blockade, during HIV Virus-Like Particles Immunization, Alters HIV-Specific B-Cell Responses. Vaccines (Basel) 2020; 8:E284. [PMID: 32517277 PMCID: PMC7349993 DOI: 10.3390/vaccines8020284] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/31/2020] [Accepted: 06/03/2020] [Indexed: 12/23/2022] Open
Abstract
Studies have shown that blockade of CTLA-4 promoted the expansion of germinal center B-cells in viral infection or immunization with model antigens. Few studies have evaluated the immunological consequences of CTLA-4 blockade during immunization against relevant vaccine candidates. Here, we investigated the effects of CTLA-4 blockade on HIV virus-like particles (VLPs) vaccination in a C57BL/6J mouse model. We found that CTLA-4 blockade during HIV VLP immunization resulted in increased CD4+ T-cell activation, promoted the expansion of HIV envelope (Env)-specific follicular helper T cell (Tfh) cells, and significantly increased HIV Gag- and Env-specific IgG with higher avidity and antibody-dependent cellular cytotoxicity (ADCC) capabilities. Furthermore, after only a single immunization, CTLA-4 blockade accelerated T-cell dependent IgG class switching and the induction of significantly high serum levels of the B-cell survival factor, A proliferation-inducing ligand (APRIL). Although no significant increase in neutralizing antibodies was observed, increased levels of class-switched Env- and Gag-specific IgG are indicative of increased polyclonal B-cell activation, which demonstrated the ability to mediate and enhance ADCC in this study. Altogether, our findings show that CTLA-4 blockade can increase the levels of HIV antigen-specific B-cell and antigen-specific Tfh cell activity and impact humoral immune responses when combined with a clinically relevant HIV VLP-based vaccine.
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Affiliation(s)
- Phoebe E. Lewis
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA; (P.E.L.); (E.C.P.); (D.L.); (C.C.)
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ethan C. Poteet
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA; (P.E.L.); (E.C.P.); (D.L.); (C.C.)
| | - Dongliang Liu
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA; (P.E.L.); (E.C.P.); (D.L.); (C.C.)
| | - Changyi Chen
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA; (P.E.L.); (E.C.P.); (D.L.); (C.C.)
| | - Celia C. LaBranche
- Duke Human Vaccine Institute, Departments of Medicine, Immunology, Surgery, and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27708, USA; (C.C.L.); (S.A.S.-O.); (D.C.M.); (G.F.)
| | - Sherry A. Stanfield-Oakley
- Duke Human Vaccine Institute, Departments of Medicine, Immunology, Surgery, and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27708, USA; (C.C.L.); (S.A.S.-O.); (D.C.M.); (G.F.)
| | - David C. Montefiori
- Duke Human Vaccine Institute, Departments of Medicine, Immunology, Surgery, and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27708, USA; (C.C.L.); (S.A.S.-O.); (D.C.M.); (G.F.)
| | - Guido Ferrari
- Duke Human Vaccine Institute, Departments of Medicine, Immunology, Surgery, and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27708, USA; (C.C.L.); (S.A.S.-O.); (D.C.M.); (G.F.)
| | - Qizhi Yao
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA; (P.E.L.); (E.C.P.); (D.L.); (C.C.)
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX 77030, USA
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49
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Lai JI, Eszterhas SK, Brooks SA, Guo C, Zolla-Pazner S, Seaman MS, Bailey-Kellogg C, Griswold KE, Ackerman ME. Induction of cross-reactive HIV-1 specific antibody responses by engineered V1V2 immunogens with reduced conformational plasticity. Vaccine 2020; 38:3436-3446. [PMID: 32192810 PMCID: PMC7132531 DOI: 10.1016/j.vaccine.2020.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/26/2020] [Accepted: 03/03/2020] [Indexed: 01/13/2023]
Abstract
Antibodies against the HIV-1 V1V2 loops were the only correlate of reduced infection risk in the RV144 vaccine trial, highlighting the V1V2 loops as promising targets for vaccine design. The V1V2 loops are structurally plastic, exhibiting either an α-helix-coil or β-strand conformation. V1V2-specific antibodies may thus recognize distinct conformations, and an antibody's conformational specificity can be an important determinant of breadth and function. Restricting V1V2 conformational plasticity in an immunogen may thus provide control over the conformational specificity and quality of a vaccine-elicited antibody response. Previously, we identified a V1V2 sequence variant (K155M) that results in enhanced recognition by cross-reactive antibodies recognizing the β-strand conformation. Here, we relate V1V2 antigenicity to immunogenicity by comparing the immunogenicity profiles of wildtype and K155M immunogens in two mouse models. In one model, immunization with gp70 V1V2 K155M but not wildtype elicited antibody responses that were cross-reactive to a panel of heterologous gp120 and gp140 antigens. In a second model, we compared the effect of K155M on immunogenicity in the context of gp70 V1V2, gD V1V2 and gp120, examining the effects of scaffold, epitope-focusing and immunization regimen. K155M variants, especially in the context of a gp120 immunogen, resulted in more robust, durable and cross-reactive antibody responses than wildtype immunogens. Restriction of the β-stranded V1V2 conformation in K155M immunogens may thus be associated with the induction of cross-reactive antibody responses thought to be required of a protective HIV-1 vaccine.
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Affiliation(s)
- Jennifer I Lai
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | | | - Seth A Brooks
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - Chengzi Guo
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - Susan Zolla-Pazner
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael S Seaman
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Karl E Griswold
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - Margaret E Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA; Department of Microbiology and Immunology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA.
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50
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Dimitrov JD, Lacroix-Desmazes S. Noncanonical Functions of Antibodies. Trends Immunol 2020; 41:379-393. [PMID: 32273170 DOI: 10.1016/j.it.2020.03.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/17/2022]
Abstract
The typical functions of antibodies are based on linking the process of antigen recognition with initiation of innate immune reactions. With the introduction of modern research technologies and the use of sophisticated model systems, recent years have witnessed the discovery of a number of noncanonical functions of antibodies. These functions encompass either untypical strategies for neutralization of pathogens or exertion of activities that are characteristic for other proteins (cytokines, chaperones, or enzymes). Here, we provide an overview of the noncanonical functions of antibodies and discuss their mechanisms and implications in immune regulation and defense. A better comprehension of these functions will enrich our knowledge of the adaptive immune response and shall inspire the development of novel therapeutics.
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Affiliation(s)
- Jordan D Dimitrov
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France.
| | - Sébastien Lacroix-Desmazes
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France
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