1
|
Mackin SR, Sariol A, Diamond MS. Antibody-mediated control mechanisms of viral infections. Immunol Rev 2024. [PMID: 39162394 DOI: 10.1111/imr.13383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
Antibodies generated after vaccination or natural pathogen exposure are essential mediators of protection against many infections. Most studies with viruses have focused on antibody neutralization, in which protection is conferred by the fragment antigen binding region (Fab) through targeting of different steps in the viral lifecycle including attachment, internalization, fusion, and egress. Beyond neutralization, the fragment crystallizable (Fc) region of antibodies can integrate innate and adaptive immune responses by engaging complement components and distinct Fc gamma receptors (FcγR) on different host immune cells. In this review, we discuss recent advances in our understanding of antibody neutralization and Fc effector functions, and the assays used to measure them. Additionally, we describe the contexts in which these mechanisms are associated with protection against viruses and highlight how Fc-FcγR interactions can improve the potency of antibody-based therapies.
Collapse
Affiliation(s)
- Samantha R Mackin
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Pathology & Immunology and Center for Genome Sciences, Lab & Genomic Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Alan Sariol
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Michael S Diamond
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Pathology & Immunology and Center for Genome Sciences, Lab & Genomic Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri, USA
- Andrew M. and Jane M. Bursky the Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, Missouri, USA
- Center for Vaccines and Immunity to Microbial Pathogens, Washington University School of Medicine, St. Louis, Missouri, USA
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Nettere D, Unnithan S, Rodgers N, Nohara J, Cray P, Berry M, Jones C, Armand L, Li SH, Berendam SJ, Fouda GG, Cain DW, Spence TN, Granek JA, Davenport CA, Edwards RJ, Wiehe K, Van Rompay KKA, Moody MA, Permar SR, Pollara J. Conjugation of HIV-1 envelope to hepatitis B surface antigen alters vaccine responses in rhesus macaques. NPJ Vaccines 2023; 8:183. [PMID: 38001122 PMCID: PMC10673864 DOI: 10.1038/s41541-023-00775-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
An effective HIV-1 vaccine remains a critical unmet need for ending the AIDS epidemic. Vaccine trials conducted to date have suggested the need to increase the durability and functionality of vaccine-elicited antibodies to improve efficacy. We hypothesized that a conjugate vaccine based on the learned response to immunization with hepatitis B virus could be utilized to expand T cell help and improve antibody production against HIV-1. To test this, we developed an innovative conjugate vaccine regimen that used a modified vaccinia virus Ankara (MVA) co-expressing HIV-1 envelope (Env) and the hepatitis B virus surface antigen (HBsAg) as a prime, followed by two Env-HBsAg conjugate protein boosts. We compared the immunogenicity of this conjugate regimen to matched HIV-1 Env-only vaccines in two groups of 5 juvenile rhesus macaques previously immunized with hepatitis B vaccines in infancy. We found expansion of both HIV-1 and HBsAg-specific circulating T follicular helper cells and elevated serum levels of CXCL13, a marker for germinal center activity, after boosting with HBsAg-Env conjugate antigens in comparison to Env alone. The conjugate vaccine elicited higher levels of antibodies binding to select HIV Env antigens, but we did not observe significant improvement in antibody functionality, durability, maturation, or B cell clonal expansion. These data suggests that conjugate vaccination can engage both HIV-1 Env and HBsAg specific T cell help and modify antibody responses at early time points, but more research is needed to understand how to leverage this strategy to improve the durability and efficacy of next-generation HIV vaccines.
Collapse
Affiliation(s)
- Danielle Nettere
- Duke University School of Medicine, Durham, NC, USA
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, USA
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Shakthi Unnithan
- Department of Statistics, North Carolina State University, Raleigh, NC, USA
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA
| | - Nicole Rodgers
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Junsuke Nohara
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, USA
| | - Paul Cray
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Madison Berry
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Caroline Jones
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Lawrence Armand
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Shuk Hang Li
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Stella J Berendam
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
- GSK Rockville Center for Vaccines Research, Rockville, MD, USA
| | - Genevieve G Fouda
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, USA
| | - Derek W Cain
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Taylor N Spence
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Joshua A Granek
- Quantitative Sciences Core, Duke University Center for AIDS Research, Duke University School of Medicine, Durham, NC, USA
| | - Clemontina A Davenport
- Quantitative Sciences Core, Duke University Center for AIDS Research, Duke University School of Medicine, Durham, NC, USA
| | - Robert J Edwards
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Kevin Wiehe
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Koen K A Van Rompay
- California National Primate Research Center, University of California, Davis, CA, USA
| | - M Anthony Moody
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - Sallie R Permar
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, USA
| | - Justin Pollara
- Department of Surgery, Duke University School of Medicine, Durham, NC, USA.
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA.
| |
Collapse
|
4
|
Abstract
Neutralizing antibodies (nAbs) are being increasingly used as passive antiviral reagents in prophylactic and therapeutic modalities and to guide viral vaccine design. In vivo, nAbs can mediate antiviral functions through several mechanisms, including neutralization, which is defined by in vitro assays in which nAbs block viral entry to target cells, and antibody effector functions, which are defined by in vitro assays that evaluate nAbs against viruses and infected cells in the presence of effector systems. Interpreting in vivo results in terms of these in vitro assays is challenging but important in choosing optimal passive antibody and vaccine strategies. Here, I review findings from many different viruses and conclude that, although some generalizations are possible, deciphering the relative contributions of different antiviral mechanisms to the in vivo efficacy of antibodies currently requires consideration of individual antibody-virus interactions.
Collapse
Affiliation(s)
- Dennis R Burton
- Department of Immunology and Microbiology, Consortium for HIV/AIDS Vaccine Development, International AIDS Vaccine Initiative Neutralizing Antibody Center, The Scripps Research Institute, La Jolla, CA, USA.
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, USA.
| |
Collapse
|
5
|
Chen JL, Fries CN, Berendam SJ, Rodgers NS, Roe EF, Wu Y, Li SH, Jain R, Watts B, Eudailey J, Barfield R, Chan C, Moody MA, Saunders KO, Pollara J, Permar SR, Collier JH, Fouda GG. Self-assembling peptide nanofiber HIV vaccine elicits robust vaccine-induced antibody functions and modulates Fc glycosylation. SCIENCE ADVANCES 2022; 8:eabq0273. [PMID: 36149967 PMCID: PMC9506727 DOI: 10.1126/sciadv.abq0273] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 08/04/2022] [Indexed: 06/16/2023]
Abstract
To develop vaccines for certain key global pathogens such as HIV, it is crucial to elicit both neutralizing and non-neutralizing Fc-mediated effector antibody functions. Clinical evidence indicates that non-neutralizing antibody functions including antibody-dependent cellular cytotoxicity (ADCC) and antibody-dependent cellular phagocytosis (ADCP) contribute to protection against several pathogens. In this study, we demonstrated that conjugation of HIV Envelope (Env) antigen gp120 to a self-assembling nanofiber material named Q11 induced antibodies with higher breadth and functionality when compared to soluble gp120. Immunization with Q11-conjugated gp120 vaccine (gp120-Q11) demonstrated higher tier 1 neutralization, ADCP, and ADCC as compared to soluble gp120. Moreover, Q11 conjugation altered the Fc N-glycosylation profile of antigen-specific antibodies, leading to a phenotype associated with increased ADCC in animals immunized with gp120-Q11. Thus, this nanomaterial vaccine strategy can enhance non-neutralizing antibody functions possibly through modulation of immunoglobulin G Fc N-glycosylation.
Collapse
Affiliation(s)
- Jui-Lin Chen
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Chelsea N. Fries
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Stella J. Berendam
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Nicole S. Rodgers
- Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - Emily F. Roe
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Yaoying Wu
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Shuk Hang Li
- The Cell and Molecular Biology Graduate Group, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rishabh Jain
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Brian Watts
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
| | - Joshua Eudailey
- Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA
| | - Richard Barfield
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham NC 27710, USA
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC 27707, USA
| | - Cliburn Chan
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham NC 27710, USA
- Center for Human Systems Immunology, Duke University School of Medicine, Durham, NC 27707, 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 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
| | - Justin Pollara
- 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
| | - Sallie R. Permar
- Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA
| | - Joel H. Collier
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Genevieve G. Fouda
- 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
| |
Collapse
|
6
|
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.
Collapse
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
| |
Collapse
|
7
|
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.
Collapse
|
8
|
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.
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
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.
Collapse
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.
| |
Collapse
|
11
|
Abstract
PURPOSE OF REVIEW Although the goal of preventive HIV vaccine design is primarily the induction of broadly neutralizing antibodies (bNAbs), recent evidence suggests that a protective response will also benefit from Fc effector functions. Here, we provide an update on the antibody response to HIV infection, including both Fab and Fc-mediated antibody responses. We also highlight recent studies showing the interplay between these functions, focusing primarily on studies published in the last year. RECENT FINDINGS Identification and characterization of bNAb donors continues to provide insights into viral factors that are potentially translatable to vaccine design. Improved and more diverse measures of Fc effector function, and modulators thereof, are enabling a deeper understanding of their role in infection. New data providing mechanistic links between the innate and adaptive humoral immune responses are creating exciting opportunities for vaccine strategies, with the aim of eliciting a polyfunctional protective response. SUMMARY New insights into the overall humoral response to HIV infection are defining diverse and synergistic mechanisms required for antibody protection from HIV through vaccination.
Collapse
|
12
|
Neidich SD, Fong Y, Li SS, Geraghty DE, Williamson BD, Young WC, Goodman D, Seaton KE, Shen X, Sawant S, Zhang L, deCamp AC, Blette BS, Shao M, Yates NL, Feely F, Pyo CW, Ferrari G, Frank I, Karuna ST, Swann EM, Mascola JR, Graham BS, Hammer SM, Sobieszczyk ME, Corey L, Janes HE, McElrath MJ, Gottardo R, Gilbert PB, Tomaras GD. Antibody Fc effector functions and IgG3 associate with decreased HIV-1 risk. J Clin Invest 2019; 129:4838-4849. [PMID: 31589165 PMCID: PMC6819135 DOI: 10.1172/jci126391] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 08/07/2019] [Indexed: 12/30/2022] Open
Abstract
HVTN 505 is a preventative vaccine efficacy trial testing DNA followed by recombinant adenovirus serotype 5 (rAd5) in circumcised, Ad5-seronegative men and transgendered persons who have sex with men in the United States. Identified immune correlates of lower HIV-1 risk and a virus sieve analysis revealed that, despite lacking overall efficacy, vaccine-elicited responses exerted pressure on infecting HIV-1 viruses. To interrogate the mechanism of the antibody correlate of HIV-1 risk, we examined antigen-specific antibody recruitment of Fcγ receptors (FcγRs), antibody-dependent cellular phagocytosis (ADCP), and the role of anti-envelope (anti-Env) IgG3. In a prespecified immune correlates analysis, antibody-dependent monocyte phagocytosis and antibody binding to FcγRIIa correlated with decreased HIV-1 risk. Follow-up analyses revealed that anti-Env IgG3 breadth correlated with reduced HIV-1 risk, anti-Env IgA negatively modified infection risk by Fc effector functions, and that vaccine recipients with a specific FcγRIIa single-nucleotide polymorphism locus had a stronger correlation with decreased HIV-1 risk when ADCP, Env-FcγRIIa, and IgG3 binding were high. Additionally, FcγRIIa engagement correlated with decreased viral load setpoint in vaccine recipients who acquired HIV-1. These data support a role for vaccine-elicited anti-HIV-1 Env IgG3, antibody engagement of FcRs, and phagocytosis as potential mechanisms for HIV-1 prevention.
Collapse
Affiliation(s)
- Scott D. Neidich
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Youyi Fong
- Statistical Center for HIV/AIDS Research and Prevention
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - Shuying S. Li
- Statistical Center for HIV/AIDS Research and Prevention
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Daniel E. Geraghty
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Brian D. Williamson
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | | | - Derrick Goodman
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Kelly E. Seaton
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Xiaoying Shen
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Sheetal Sawant
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Lu Zhang
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | | | - Bryan S. Blette
- Department of Biostatistics, University of North Carolina Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
| | - Mengshu Shao
- Statistical Center for HIV/AIDS Research and Prevention
| | - Nicole L. Yates
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Frederick Feely
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
| | - Chul-Woo Pyo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
- Department of Surgery and
- Department of Molecular Genetics and Microbiology, Duke University, Durham, North Carolina, USA
| | - HVTN 505 Team
- The HVTN 505 Team is detailed in the Supplemental Acknowledgments
| | - Ian Frank
- Division of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia Pennsylvania, USA
| | - Shelly T. Karuna
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | | | - John R. Mascola
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA
| | - Barney S. Graham
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland, USA
| | - Scott M. Hammer
- Division of Infectious Diseases, Department of Medicine, Columbia University, New York, New York, USA
| | - Magdalena E. Sobieszczyk
- Division of Infectious Diseases, Department of Medicine, Columbia University, New York, New York, USA
| | - Lawrence Corey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Holly E. Janes
- Statistical Center for HIV/AIDS Research and Prevention
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - M. Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Raphael Gottardo
- Statistical Center for HIV/AIDS Research and Prevention
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Peter B. Gilbert
- Statistical Center for HIV/AIDS Research and Prevention
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - Georgia D. Tomaras
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
- Department of Surgery and
- Department of Molecular Genetics and Microbiology, Duke University, Durham, North Carolina, USA
- Department of Immunology, Duke University, Durham, North Carolina, USA
| |
Collapse
|
13
|
Hompe ED, Jacobson DL, Eudailey JA, Butler K, Edwards W, Pollara J, Brummel SS, Fouda GG, Chinula L, Kamanga M, Kinikar A, Moodley D, Owor M, Fowler MG, Permar SR. Maternal Humoral Immune Responses Do Not Predict Postnatal HIV-1 Transmission Risk in Antiretroviral-Treated Mothers from the IMPAACT PROMISE Study. mSphere 2019; 4:e00716-19. [PMID: 31645430 PMCID: PMC7407004 DOI: 10.1128/msphere.00716-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 11/20/2022] Open
Abstract
To design immune interventions that can synergize with antiretroviral therapy (ART) to reduce the rate of HIV mother-to-child transmission (MTCT), it is essential to characterize maternal immune responses in the setting of ART during pregnancy and breastfeeding and define their effect on MTCT. Prior studies reported an association between breast milk envelope (Env)-specific antibodies and antibody-dependent cell cytotoxicity (ADCC) activity with reduced postnatal transmission. In this study, we investigated whether these immune correlates were similarly associated with protection in a matched case-control study of mother-infant pairs receiving maternal ART or infant nevirapine prophylaxis during breastfeeding in the International Maternal-Pediatric-Adolescent AIDS Clinical Trials Network Promoting Maternal-Infant Survival Everywhere (PROMISE) trial, assessing postnatal transmission risk in 19 transmitting and 57 nontransmitting mothers using conditional logistic regression models adjusted for maternal plasma viral load. The odds ratios of postnatal MTCT for a 1-unit increase in an immune correlate were 3.61 (95% confidence interval [CI], 0.56, 23.14) for breast milk Env-specific secretory IgA (sIgA), 2.32 (95% CI, 0.43, 12.56) for breast milk and 2.16 (95% CI, 0.51, 9.14) for plasma Env-specific IgA, and 4.57 (95% CI, 0.68, 30.48) for breast milk and 0.96 (95% CI, 0.25, 3.67) for plasma ADCC activity, with all CIs spanning 1.0. Interestingly, although mucosal IgA responses are poor in untreated HIV-infected women, there was a strong correlation between the magnitudes of breast milk and plasma Env-specific IgA in this cohort. In this analysis of the small number of postnatal virus transmissions in the landmark PROMISE study, no single antibody response was associated with breast milk transmission risk.IMPORTANCE Each year, >150,000 infants become newly infected with HIV-1 through MTCT despite ART, with up to 42% of infections occurring during breastfeeding. Several factors contribute to continued pediatric infections, including ART nonadherence, the emergence of drug-resistant HIV strains, acute infection during breastfeeding, and poor access to ART in resource-limited areas. A better understanding of the maternal humoral immune responses that provide protection against postnatal transmission in the setting of ART is critical to guide the design of maternal vaccine strategies to further eliminate postnatal HIV transmission. In this study, we found that in women treated with antiretrovirals during pregnancy, there was a positive correlation between plasma viral load and breast milk and plasma IgA responses; however, conclusions regarding odds of MTCT risk were limited by the small sample size. These findings will inform future studies to investigate maternal immune interventions that can synergize with ART to eliminate MTCT during breastfeeding.
Collapse
Affiliation(s)
- Eliza D Hompe
- Duke University School of Medicine, Durham, North Carolina, USA
| | - Denise L Jacobson
- Center for Biostatistics in AIDS Research, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Joshua A Eudailey
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Kevin Butler
- Center for Biostatistics in AIDS Research, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Whitney Edwards
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Justin Pollara
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - Sean S Brummel
- Center for Biostatistics in AIDS Research, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Genevieve G Fouda
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Lameck Chinula
- University of North Carolina Project-Malawi, Lilongwe, Malawi
| | - Melvin Kamanga
- Johns Hopkins University Research Project, Blantyre, Malawi
| | - Aarti Kinikar
- Byramjee Jeejeebhoy Government Medical College, Pune, Maharashtra, India
| | - Dhayendre Moodley
- Centre for the AIDS Programme of Research in South Africa and School of Clinical Medicine, College of Health Sciences, University of KwaZulu Natal, Durban, South Africa
| | - Maxensia Owor
- Johns Hopkins University Research Collaboration, Makerere University, Kampala, Uganda
| | - Mary Glenn Fowler
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sallie R Permar
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| |
Collapse
|
14
|
Lewis GK, Ackerman ME, Scarlatti G, Moog C, Robert-Guroff M, Kent SJ, Overbaugh J, Reeves RK, Ferrari G, Thyagarajan B. Knowns and Unknowns of Assaying Antibody-Dependent Cell-Mediated Cytotoxicity Against HIV-1. Front Immunol 2019; 10:1025. [PMID: 31134085 PMCID: PMC6522882 DOI: 10.3389/fimmu.2019.01025] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 04/23/2019] [Indexed: 12/15/2022] Open
Abstract
It is now well-accepted that Fc-mediated effector functions, including antibody-dependent cellular cytotoxicity (ADCC), can contribute to vaccine-elicited protection as well as post-infection control of HIV viremia. This picture was derived using a wide array of ADCC assays, no two of which are strictly comparable, and none of which is qualified at the clinical laboratory level. An earlier comparative study of assay protocols showed that while data from different ADCC assay formats were often correlated, they remained distinct in terms of target cells and the epitopes and antigen(s) available for recognition by antibodies, the effector cells, and the readout of cytotoxicity. This initial study warrants expanded analyses of the relationships among all current assay formats to determine where they detect overlapping activities and where they do not. Here we summarize knowns and unknowns of assaying ADCC against HIV-1.
Collapse
Affiliation(s)
- George K. Lewis
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | | | - Gabriella Scarlatti
- Viral Evolution and Transmission Unit, Department of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Christiane Moog
- INSERM U1109, Fédération Hospitalo-Universitaire (FHU) OMICARE, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Marjorie Robert-Guroff
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institues of Health, Bethesda, MD, United States
| | - Stephen J. Kent
- Department of Microbiology and Immunology, The University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Julie Overbaugh
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - R. Keith Reeves
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA, United States
| | - Guido Ferrari
- Department of Surgery and Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, United States
| | | |
Collapse
|
15
|
Spearman P, Tomaras GD, Montefiori DC, Huang Y, Elizaga ML, Ferrari G, Alam SM, Isaacs A, Ahmed H, Hural J, McElrath MJ, Ouedraogo L, Pensiero M, Butler C, Kalams SA, Overton ET, Barnett SW. Rapid Boosting of HIV-1 Neutralizing Antibody Responses in Humans Following a Prolonged Immunologic Rest Period. J Infect Dis 2019; 219:1755-1765. [PMID: 30615119 PMCID: PMC6775047 DOI: 10.1093/infdis/jiz008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 01/04/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The durability and breadth of human immunodeficiency virus type 1 (HIV-1)-specific immune responses elicited through vaccination are important considerations in the development of an effective HIV-1 vaccine. Responses to HIV-1 envelope subunit protein (Env) immunization in humans are often described as short-lived. METHODS We enrolled 16 healthy volunteers who had received priming with an HIV-1 subtype B Env vaccine given with MF59 adjuvant 5-17 years previously and 20 healthy unprimed volunteers. Three booster immunizations with a heterologous subtype C trimeric gp140 protein vaccine were administered to the primed group, and the same subtype C gp140 protein vaccination regimen was administered to the unprimed subjects. RESULTS Binding antibodies and neutralizing antibodies to tier 1 viral isolates were detected in the majority of previously primed subjects. Remarkably, a single dose of protein boosted binding and neutralizing antibody titers in 100% of primed subjects following this prolonged immunologic rest period, and CD4+ T-cell responses were boosted in 75% of primed individuals. CONCLUSIONS These results demonstrate that HIV-1 protein immunogens can elicit durable memory T- and B-cell responses and that strong tier 1 virus neutralizing responses can be elicited by a single booster dose of protein following a long immunologic rest period. However, we found no evidence that cross-clade boosting led to a significantly broadened neutralizing antibody response.
Collapse
Affiliation(s)
- Paul Spearman
- Department of Pediatrics, Cincinnati Children’s Hospital, Ohio
| | - Georgia D Tomaras
- Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - David C Montefiori
- Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Ying Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Marnie L Elizaga
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Guido Ferrari
- Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - S Munir Alam
- Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Abby Isaacs
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Hasan Ahmed
- Department of Biology, Emory University, Atlanta, Georgia
| | - John Hural
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - M Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Laissa Ouedraogo
- Division of AIDS, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Michael Pensiero
- Division of AIDS, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Chris Butler
- Division of AIDS, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Spyros A Kalams
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Edgar Turner Overton
- Department of Medicine, University of Alabama at Birmingham, Cambridge, Massachusetts
| | | | | |
Collapse
|
16
|
Bridging Vaccine-Induced HIV-1 Neutralizing and Effector Antibody Responses in Rabbit and Rhesus Macaque Animal Models. J Virol 2019; 93:JVI.02119-18. [PMID: 30842326 PMCID: PMC6498063 DOI: 10.1128/jvi.02119-18] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 02/20/2019] [Indexed: 12/13/2022] Open
Abstract
Nonneutralizing antibody functions have been associated with reduced infection risk, or control of virus replication, for HIV-1 and related viruses. It is therefore critical to evaluate development of these responses throughout all stages of preclinical testing. Rabbits are conventionally used to evaluate the ability of vaccine candidates to safely elicit antibodies that bind and neutralize HIV-1. However, it remained unexplored how effectively rabbits model the development of nonneutralizing antibody responses in primates. We administered identical HIV-1 vaccine regimens to rabbits and rhesus macaques and performed detailed comparisons of vaccine-induced antibody responses. We demonstrated that nonneutralizing HIV-specific antibody responses can be studied in the rabbit model and have identified aspects of these responses that are common, and those that are unique, to rabbits and rhesus macaques. Our findings will help determine how to best utilize preclinical rabbit and rhesus macaque models to accelerate HIV vaccine candidate testing in human trials. Studies in animal models are essential prerequisites for clinical trials of candidate HIV vaccines. Small animals, such as rabbits, are used to evaluate promising strategies prior to further immunogenicity and efficacy testing in nonhuman primates. Our goal was to determine how HIV-specific vaccine-elicited antibody responses, epitope specificity, and Fc-mediated functions in the rabbit model can predict those in the rhesus macaque (RM) model. Detailed comparisons of the HIV-1-specific IgG response were performed on serum from rabbits and RM given identical modified vaccinia virus Ankara-prime/gp120-boost immunization regimens. We found that vaccine-induced neutralizing antibody, gp120-binding antibody levels and immunodominant specificities, antibody-dependent cellular phagocytosis of HIV-1 virions, and antibody-dependent cellular cytotoxicity (ADCC) responses against gp120-coated target cells were similar in rabbits and RM. However, we also identified characteristics of humoral immunity that differed across species. ADCC against HIV-infected target cells was elicited in rabbits but not in RM, and we observed differences among subdominantly targeted epitopes. Human Fc receptor binding assays and analysis of antibody-cell interactions indicated that rabbit vaccine-induced antibodies effectively recruited and activated human natural killer cells, while vaccine-elicited RM antibodies were unable to activate either human or RM NK cells. Thus, our data demonstrate that both Fc-independent and Fc-dependent functions of rabbit antibodies can be measured with commonly used in vitro assays; however, the ability of immunogenicity studies performed in rabbits to predict responses in RM will vary depending on the particular immune parameter of interest. IMPORTANCE Nonneutralizing antibody functions have been associated with reduced infection risk, or control of virus replication, for HIV-1 and related viruses. It is therefore critical to evaluate development of these responses throughout all stages of preclinical testing. Rabbits are conventionally used to evaluate the ability of vaccine candidates to safely elicit antibodies that bind and neutralize HIV-1. However, it remained unexplored how effectively rabbits model the development of nonneutralizing antibody responses in primates. We administered identical HIV-1 vaccine regimens to rabbits and rhesus macaques and performed detailed comparisons of vaccine-induced antibody responses. We demonstrated that nonneutralizing HIV-specific antibody responses can be studied in the rabbit model and have identified aspects of these responses that are common, and those that are unique, to rabbits and rhesus macaques. Our findings will help determine how to best utilize preclinical rabbit and rhesus macaque models to accelerate HIV vaccine candidate testing in human trials.
Collapse
|
17
|
Tay MZ, Wiehe K, Pollara J. Antibody-Dependent Cellular Phagocytosis in Antiviral Immune Responses. Front Immunol 2019; 10:332. [PMID: 30873178 PMCID: PMC6404786 DOI: 10.3389/fimmu.2019.00332] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/08/2019] [Indexed: 12/20/2022] Open
Abstract
Antiviral activities of antibodies may either be dependent only on interactions between the antibody and cognate antigen, as in binding and neutralization of an infectious virion, or instead may require interactions between antibody-antigen immune complexes and immunoproteins or Fc receptor expressing immune effector cells. These Fc receptor-dependent antibody functions provide a direct link between the innate and adaptive immune systems by combining the potent antiviral activity of innate effector cells with the diversity and specificity of the adaptive humoral response. The Fc receptor-dependent function of antibody-dependent cellular phagocytosis (ADCP) provides mechanisms for clearance of virus and virus-infected cells, as well as for stimulation of downstream adaptive immune responses by facilitating antigen presentation, or by stimulating the secretion of inflammatory mediators. In this review, we discuss the properties of Fc receptors, antibodies, and effector cells that influence ADCP. We also provide and interpret evidence from studies that support a potential role for ADCP in either inhibiting or enhancing viral infection. Finally, we describe current approaches used to measure antiviral ADCP and discuss considerations for the translation of studies performed in animal models. We propose that additional investigation into the role of ADCP in protective viral responses, the specific virus epitopes targeted by ADCP antibodies, and the types of phagocytes and Fc receptors involved in ADCP at sites of virus infection will provide insight into strategies to successfully leverage this important immune response for improved antiviral immunity through rational vaccine design.
Collapse
Affiliation(s)
- Matthew Zirui Tay
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, United States
| | - Kevin Wiehe
- Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Justin Pollara
- Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States
| |
Collapse
|
18
|
Measuring the ability of HIV-specific antibodies to mediate trogocytosis. J Immunol Methods 2018; 463:71-83. [PMID: 30240705 DOI: 10.1016/j.jim.2018.09.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 09/14/2018] [Accepted: 09/14/2018] [Indexed: 12/20/2022]
Abstract
Antibody Fc effector functions contribute to HIV control and have been implicated in the partial efficacy seen in the RV144 vaccine trial. Fc-mediated trogocytosis has been previously described for anti-cancer antibodies and results in the removal of membrane fragments from target cells. Here we developed a flow cytometry-based assay which measures the transfer of membrane fragments from a gp120-coated CD4+ lymphocytic cell line (CEM.NKR-CCR5 cells stained with a membrane dye PKH26) to monocytic cells (THP-1 cells stained with CFSE). We showed that this transfer occurred rapidly, within 1 h, and was mediated through engagement of the FcγRIIa/b receptors on the THP-1 cells. HIV-specific IgG as well as gp120 and CD4 could be detected on the surface of THP-1 cells in a process that we demonstrated was distinct from phagocytosis. Furthermore, while the THP-1 effector cells remained intact following the receipt of new membrane proteins, the viability of the target CEM.NKR-CCR5 cells decreased over time. Analysis of HIV-specific plasma revealed that antibodies with trogocytic activity were common in acute and chronic HIV infection but were higher in individuals with broadly neutralizing antibody responses We also examined trogocytosis mediated by broadly neutralizing antibodies (bNAbs) targeting multiple epitopes on the BG505.SOSIP.664 trimer and show that levels of binding correlated with the trogocytosis score. Overall, our data describe a new antiviral Fc effector function mediated by HIV-specific antibodies that could be harnessed for vaccination and cure strategies.
Collapse
|
19
|
Alrubayyi A, Schuetz A, Lal KG, Jongrakthaitae S, Paolino KM, Ake JA, Robb ML, de Souza MS, Michael NL, Paquin-Proulx D, Eller MA. A flow cytometry based assay that simultaneously measures cytotoxicity and monocyte mediated antibody dependent effector activity. J Immunol Methods 2018; 462:74-82. [PMID: 30148978 DOI: 10.1016/j.jim.2018.08.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 12/14/2022]
Abstract
Antibody effector functions such as antibody dependent cellular cytotoxicity (ADCC) and antibody dependent cellular phagocytosis (ADCP) are considered important immunologic parameters following results from the RV144 clinical trial where a reduced risk of infection was associated with non-neutralizing antibody against the V1/V2 region of HIV envelope. The rapid and fluorometric ADCC (RFADCC) assay has been widely used to measure ADCC, however, the mechanism behind the activity measured remains unclear. Here, we demonstrate that monocytes acquire the PKH26 dye used in the RFADCC assay and that the commonly used RFADCC readout correlates with phagocytosis. The RFADCC assay was combined with an amine reactive dye staining to confirm target cell killing. Interestingly, the majority of RFADCC and amine indices were mutually exclusive. In fact, the amine reactive assay results correlated with results from another assays that directly measure NK cell antibody effector functions not associated with phagocytosis. Together, this combined assay offers the opportunity to discriminate monocytes and NK cell antibody effector functions simultaneously.
Collapse
Affiliation(s)
- Aljawharah Alrubayyi
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
| | - Alexandra Schuetz
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA; Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Kerri G Lal
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
| | - Surat Jongrakthaitae
- Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Kristopher M Paolino
- Clinical Trials Center, Translational Medicine Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Julie A Ake
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Merlin L Robb
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
| | - Mark S de Souza
- SEARCH, Thai Red Cross AIDS Research Center, Bangkok, Thailand
| | - Nelson L Michael
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Dominic Paquin-Proulx
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA.
| | - Michael A Eller
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
| |
Collapse
|