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Symmonds J, Gaufin T, Xu C, Raehtz KD, Ribeiro RM, Pandrea I, Apetrei C. Making a Monkey out of Human Immunodeficiency Virus/Simian Immunodeficiency Virus Pathogenesis: Immune Cell Depletion Experiments as a Tool to Understand the Immune Correlates of Protection and Pathogenicity in HIV Infection. Viruses 2024; 16:972. [PMID: 38932264 PMCID: PMC11209256 DOI: 10.3390/v16060972] [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: 03/27/2024] [Revised: 05/31/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Understanding the underlying mechanisms of HIV pathogenesis is critical for designing successful HIV vaccines and cure strategies. However, achieving this goal is complicated by the virus's direct interactions with immune cells, the induction of persistent reservoirs in the immune system cells, and multiple strategies developed by the virus for immune evasion. Meanwhile, HIV and SIV infections induce a pandysfunction of the immune cell populations, making it difficult to untangle the various concurrent mechanisms of HIV pathogenesis. Over the years, one of the most successful approaches for dissecting the immune correlates of protection in HIV/SIV infection has been the in vivo depletion of various immune cell populations and assessment of the impact of these depletions on the outcome of infection in non-human primate models. Here, we present a detailed analysis of the strategies and results of manipulating SIV pathogenesis through in vivo depletions of key immune cells populations. Although each of these methods has its limitations, they have all contributed to our understanding of key pathogenic pathways in HIV/SIV infection.
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Affiliation(s)
- Jen Symmonds
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA; (J.S.); (C.X.); (K.D.R.); (I.P.)
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Thaidra Gaufin
- Tulane National Primate Research Center, Tulane University, Covington, LA 70433, USA;
| | - Cuiling Xu
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA; (J.S.); (C.X.); (K.D.R.); (I.P.)
- Division of Infectious Diseases, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Kevin D. Raehtz
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA; (J.S.); (C.X.); (K.D.R.); (I.P.)
- Division of Infectious Diseases, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Ruy M. Ribeiro
- Theoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Ivona Pandrea
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA; (J.S.); (C.X.); (K.D.R.); (I.P.)
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Cristian Apetrei
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Division of Infectious Diseases, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
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Reddy K, Lee GQ, Reddy N, Chikowore TJ, Baisley K, Dong KL, Walker BD, Yu XG, Lichterfeld M, Ndung’u T. Differences in HIV-1 reservoir size, landscape characteristics and decay dynamics in acute and chronic treated HIV-1 Clade C infection. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.02.16.24302713. [PMID: 38947072 PMCID: PMC11213047 DOI: 10.1101/2024.02.16.24302713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Background Persisting HIV reservoir viruses in resting CD4 T cells and other cellular subsets are the main barrier to cure efforts. Antiretroviral therapy (ART) intensification by early initiation has been shown to enable post-treatment viral control in some cases but the underlying mechanisms are not fully understood. We hypothesized that ART initiated during the hyperacute phase of infection before peak will affect the size, decay dynamics and landscape characteristics of HIV-1 subtype C viral reservoirs. Methods We studied 35 women at high risk of infection from Durban, South Africa identified with hyperacute HIV infection by twice weekly testing for plasma HIV-1 RNA. Study participants included 11 who started ART at a median of 456 (297-1203) days post onset of viremia (DPOV), and 24 who started ART at a median of 1 (1-3) DPOV. We used peripheral blood mononuclear cells (PBMC) to measure total HIV-1 DNA by ddPCR and to sequence reservoir viral genomes by full length individual proviral sequencing (FLIP-seq) from onset of detection of HIV up to 1 year post treatment initiation. Results Whereas ART in hyperacute infection blunted peak viremia compared to untreated individuals (p<0.0001), there was no difference in total HIV-1 DNA measured contemporaneously (p=0.104). There was a steady decline of total HIV DNA in early treated persons over 1 year of ART (p=0.0004), with no significant change observed in the late treated group. Total HIV-1 DNA after one year of treatment was lower in the early treated compared to the late treated group (p=0.02). Generation of 697 single viral genome sequences revealed a difference in the longitudinal proviral genetic landscape over one year between untreated, late treated, and early treated infection: the relative contribution of intact genomes to the total pool of HIV-1 DNA after 1 year was higher in untreated infection (31%) compared to late treated (14%) and early treated infection (0%). Treatment initiated in both late and early infection resulted in a more rapid decay of intact (13% and 51% per month) versus defective (2% and 35% per month) viral genomes. However, intact genomes were still observed one year post chronic treatment initiation in contrast to early treatment where intact genomes were no longer detectable. Moreover, early ART reduced phylogenetic diversity of intact genomes and limited the seeding and persistence of cytotoxic T lymphocyte immune escape variants in the reservoir. Conclusions Overall, our results show that whereas ART initiated in hyperacute HIV-1 subtype C infection did not impact reservoir seeding, it was nevertheless associated with more rapid decay of intact viral genomes, decreased genetic complexity and immune escape in reservoirs, which could accelerate reservoir clearance when combined with other interventional strategies.
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Affiliation(s)
- Kavidha Reddy
- Africa Health Research Institute, Durban, South Africa
| | | | - Nicole Reddy
- Africa Health Research Institute, Durban, South Africa
- University of KwaZulu-Natal, Durban, South Africa
| | - Tatenda J.B. Chikowore
- Africa Health Research Institute, Durban, South Africa
- University College of London, London, UK
| | - Kathy Baisley
- Africa Health Research Institute, Durban, South Africa
- London School of Hygiene and Tropical Medicine, London, UK
| | - Krista L. Dong
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- HIV Pathogenesis Programme (HPP), The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
- Harvard Medical School, Boston, Massachusetts, USA
| | - Bruce D. Walker
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- HIV Pathogenesis Programme (HPP), The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
- Harvard Medical School, Boston, Massachusetts, USA
| | - Xu G. Yu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Mathias Lichterfeld
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Brigham and Women’s Hospital, Boston, MA, USA
| | - Thumbi Ndung’u
- Africa Health Research Institute, Durban, South Africa
- University of KwaZulu-Natal, Durban, South Africa
- University College of London, London, UK
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- HIV Pathogenesis Programme (HPP), The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
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de Castro FDOF, Guilarde AO, Souza LCS, Guimarães RF, Pereira AJCS, Romão PRT, Pfrimer IAH, Fonseca SG. Polarization of HIV-1- and CMV-Specific IL-17-Producing T Cells among People with HIV under Antiretroviral Therapy with Cannabis and/or Cocaine Usage. Pharmaceuticals (Basel) 2024; 17:465. [PMID: 38675425 PMCID: PMC11054529 DOI: 10.3390/ph17040465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
OBJECTIVE This study evaluated the influence of cannabis and/or cocaine use in human immunodeficiency virus (HIV)- and cytomegalovirus (CMV)-specific T-cell responses of people with HIV (PWH). RESULTS There was a higher percentage of IL-17-producing HIV-Gag-specific CD8+ T-cells in all drug users than that in PWH non-drug users. Stratifying the drug-user groups, increased percentages of IL-17-producing HIV-Gag-specific CD4+ and CD8+ T-cells were found in PWH cannabis plus cocaine users compared to PWH non-drug users. In response to CMV, there were higher percentage of IL-17-producing CMV-specific CD8+ T-cell in PWH cocaine users than that in PWH non-drug users. Considering all drug users together, there was a higher percentage of SEB-stimulated IL-17-producing CD4+ T-cells than that in PWH non-drug users, whereas cannabis users had higher percentages of IL-17-producing CD4+ T-cells compared to non-drug users. METHODS Cryopreserved peripheral blood mononuclear cells from 37 PWH undergoing antiretroviral therapy (ART) using cannabis (10), cocaine (7), or cannabis plus cocaine (10) and non-drug users (10) were stimulated with HIV-1 Gag or CMV-pp65 peptide pools, or staphylococcal enterotoxin B (SEB) and evaluated for IFN-γ- and/or IL-17A-producing CD4+ and CD8+ T-cells using flow cytometry. CONCLUSIONS Cannabis plus cocaine use increased HIV-specific IL-17 producing T-cells and cocaine use increased IL-17 CMV-specific CD8+ T-cell responses which could favor the inflammatory conditions associated with IL-17 overproduction.
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Affiliation(s)
- Fernanda de Oliveira Feitosa de Castro
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia 74605-050, GO, Brazil; (F.d.O.F.d.C.); (A.O.G.); (L.C.S.S.)
- Escola de Ciências Médicas e da Vida, Pontifícia Universidade Católica de Goiás (PUC-Goiás), Goiânia 74605-140, GO, Brazil
| | - Adriana Oliveira Guilarde
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia 74605-050, GO, Brazil; (F.d.O.F.d.C.); (A.O.G.); (L.C.S.S.)
| | - Luiz Carlos Silva Souza
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia 74605-050, GO, Brazil; (F.d.O.F.d.C.); (A.O.G.); (L.C.S.S.)
| | | | | | - Pedro Roosevelt Torres Romão
- Laboratório de Imunologia Celular e Molecular, Programa de Pós-Graduação em Ciências da Saúde, Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre 90050-170, RS, Brazil;
| | | | - Simone Gonçalves Fonseca
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia 74605-050, GO, Brazil; (F.d.O.F.d.C.); (A.O.G.); (L.C.S.S.)
- iii-INCT-Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia, São Paulo 05403-900, SP, Brazil
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Koukoulias K, Papayanni PG, Jones J, Kuvalekar M, Watanabe A, Velazquez Y, Gilmore S, Papadopoulou A, Leen AM, Vasileiou S. Assessment of the cytolytic potential of a multivirus-targeted T cell therapy using a vital dye-based, flow cytometric assay. Front Immunol 2023; 14:1299512. [PMID: 38187380 PMCID: PMC10766817 DOI: 10.3389/fimmu.2023.1299512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/05/2023] [Indexed: 01/09/2024] Open
Abstract
Reliable and sensitive characterization assays are important determinants of the successful clinical translation of immunotherapies. For the assessment of cytolytic potential, the chromium 51 (51Cr) release assay has long been considered the gold standard for testing effector cells. However, attaining the approvals to access and use radioactive isotopes is becoming increasingly complex, while technical aspects [i.e. sensitivity, short (4-6 hours) assay duration] may lead to suboptimal performance. This has been the case with our ex vivo expanded, polyclonal (CD4+ and CD8+) multivirus-specific T cell (multiVST) lines, which recognize 5 difficult-to-treat viruses [Adenovirus (AdV), BK virus (BKV), cytomegalovirus (CMV), Epstein Barr virus (EBV), and human herpes virus 6 (HHV6)] and when administered to allogeneic hematopoietic stem cell (HCT) or solid organ transplant (SOT) recipients have been associated with clinical benefit. However, despite mediating potent antiviral effects in vivo, capturing in vitro cytotoxic potential has proven difficult in a traditional 51Cr release assay. Now, in addition to cytotoxicity surrogates, including CD107a and Granzyme B, we report on an alternative, vital dye -based, flow cytometric platform in which superior sensitivity and prolonged effector:target co-culture duration enabled the reliable detection of both CD4- and CD8-mediated in vitro cytolytic activity against viral targets without non-specific effects.
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Affiliation(s)
- Kiriakos Koukoulias
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | - Penelope G. Papayanni
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | - Julia Jones
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | - Manik Kuvalekar
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | - Ayumi Watanabe
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | - Yovana Velazquez
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | | | - Anastasia Papadopoulou
- Hematology Department- Hematopoietic Cell Transplantation Unit, Gene and Cell Therapy Center, “George Papanikolaou” Hospital, Thessaloniki, Greece
| | - Ann M. Leen
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
| | - Spyridoula Vasileiou
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX, United States
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Hokello J, Tyagi P, Dimri S, Sharma AL, Tyagi M. Comparison of the Biological Basis for Non-HIV Transmission to HIV-Exposed Seronegative Individuals, Disease Non-Progression in HIV Long-Term Non-Progressors and Elite Controllers. Viruses 2023; 15:1362. [PMID: 37376660 DOI: 10.3390/v15061362] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
HIV-exposed seronegative individuals (HESIs) are a small fraction of persons who are multiply exposed to human immunodeficiency virus (HIV), but do not exhibit serological or clinical evidence of HIV infection. In other words, they are groups of people maintaining an uninfected status for a long time, even after being exposed to HIV several times. The long-term non-progressors (LTNPs), on the other hand, are a group of HIV-infected individuals (approx. 5%) who remain clinically and immunologically stable for an extended number of years without combination antiretroviral therapy (cART). Meanwhile, elite controllers are comprise a much lower number (0.5%) of HIV-infected persons who spontaneously and durably control viremia to below levels of detection for at least 12 months, even when using the most sensitive assays, such as polymerase chain reaction (PCR) in the absence of cART. Despite the fact that there is no universal agreement regarding the mechanisms by which these groups of individuals are able to control HIV infection and/or disease progression, there is a general consensus that the mechanisms of protection are multifaceted and include genetic, immunological as well as viral factors. In this review, we analyze and compare the biological factors responsible for the control of HIV in these unique groups of individuals.
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Affiliation(s)
- Joseph Hokello
- Department of Biology, Faculty of Science and Education, Busitema University, Tororo P.O. Box 236, Uganda
| | - Priya Tyagi
- Cherry Hill East High School, 1750 Kresson Rd, Cherry Hill, NJ 08003, USA
| | - Shelly Dimri
- George C. Marshall High School, Fairfax County Public Schools, 7731 Leesburg Pike, Falls Church, VA 22043, USA
| | | | - Mudit Tyagi
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA
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Muvarak N, Li H, Lahusen T, Galvin JA, Kumar PN, Pauza CD, Bordon J. Safety and durability of AGT103-T autologous T cell therapy for HIV infection in a Phase 1 trial. Front Med (Lausanne) 2022; 9:1044713. [PMID: 36452901 PMCID: PMC9701732 DOI: 10.3389/fmed.2022.1044713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/24/2022] [Indexed: 08/19/2023] Open
Abstract
UNLABELLED The cell and gene therapy product AGT103-T was designed to restore the Gag-specific CD4+ T cell response in persons with chronic HIV disease who are receiving antiretroviral therapy. This autologous, genetically engineered cell product is under investigation in a Phase 1 clinical trial (NCT03215004). Trial participants were conditioned with cyclophosphamide approximately 1 week before receiving a one-time low (< 109 genetically modified CD4+ T cells) or high (≥109 genetically modified CD4+ T cells) dose of AGT103-T, delivering between 2 and 21 million genetically modified cells per kilogram (kg) body weight. There were no serious adverse events (SAEs) and all adverse events (AEs) were mild. Genetically modified AGT103-T cells were detected in most of the participant blood samples collected 6 months after infusion, which was the last scheduled monitoring visit. Peripheral blood mononuclear cells (PBMC) collected after cell product infusion were tested to determine the abundance of Gag-specific T cells as a measure of objective responses to therapy. Gag-specific CD4+ T cells were detected in all treated individuals and were substantially increased by 9 to 300-fold compared to baseline, by 14 days after cell product infusion. Gag-specific CD8+ T cells were increased by 1.7 to 10-fold relative to baseline, by 28 days after cell product infusion. Levels of Gag-specific CD4+ T cells remained high (~2 to 70-fold higher relative to baseline) throughout 3-6 months after infusion. AGT103-T at low or high doses was safe and effective for improving host T cell immunity to HIV. Further studies, including antiretroviral treatment interruption, are warranted to evaluate the product's efficacy in HIV disease. CLINICAL TRIAL REGISTRATION www.clinicaltrials.gov, identifier: NCT03215004.
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Affiliation(s)
- Nidal Muvarak
- American Gene Technologies International, Inc., Rockville, MD, United States
| | - Haishan Li
- American Gene Technologies International, Inc., Rockville, MD, United States
| | - Tyler Lahusen
- American Gene Technologies International, Inc., Rockville, MD, United States
| | - Jeffrey A. Galvin
- American Gene Technologies International, Inc., Rockville, MD, United States
| | - Princy N. Kumar
- Georgetown University School of Medicine, Washington, DC, United States
| | - C. David Pauza
- American Gene Technologies International, Inc., Rockville, MD, United States
| | - José Bordon
- Washington Health Institute, Washington, DC, United States
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Contribution of the HIV-1 Envelope Glycoprotein to AIDS Pathogenesis and Clinical Progression. Biomedicines 2022; 10:biomedicines10092172. [PMID: 36140273 PMCID: PMC9495913 DOI: 10.3390/biomedicines10092172] [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: 07/14/2022] [Revised: 08/21/2022] [Accepted: 08/27/2022] [Indexed: 11/29/2022] Open
Abstract
In the absence of antiviral therapy, HIV-1 infection progresses to a wide spectrum of clinical manifestations that are the result of an entangled contribution of host, immune and viral factors. The contribution of these factors is not completely established. Several investigations have described the involvement of the immune system in the viral control. In addition, distinct HLA-B alleles, HLA-B27, -B57-58, were associated with infection control. The combination of these elements and antiviral host restriction factors results in different clinical outcomes. The role of the viral proteins in HIV-1 infection has been, however, less investigated. We will review contributions dedicated to the pathogenesis of HIV-1 infection focusing on studies identifying the function of the viral envelope glycoprotein (Env) in the clinical progression because of its essential role in the initial events of the virus life-cycle. Some analysis showed that inefficient viral Envs were dominant in non-progressor individuals. These poorly-functional viral proteins resulted in lower cellular activation, viral replication and minor viral loads. This limited viral antigenic production allows a better immune response and a lower immune exhaustion. Thus, the properties of HIV-1 Env are significant in the clinical outcome of the HIV-1 infection and AIDS pathogenesis.
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Addison MM, Ellis GI, Leslie GJ, Zawadzky NB, Riley JL, Hoxie JA, Eisenlohr LC. HIV-1-Infected CD4 + T Cells Present MHC Class II-Restricted Epitope via Endogenous Processing. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:864-873. [PMID: 36130133 PMCID: PMC9512365 DOI: 10.4049/jimmunol.2200145] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/15/2022] [Indexed: 01/04/2023]
Abstract
HIV-1-specific CD4+ T cells (TCD4+s) play a critical role in controlling HIV-1 infection. Canonically, TCD4+s are activated by peptides derived from extracellular ("exogenous") Ags displayed in complex with MHC class II (MHC II) molecules on the surfaces of "professional" APCs such as dendritic cells (DCs). In contrast, activated human TCD4+s, which express MHC II, are not typically considered for their APC potential because of their low endocytic capacity and the exogenous Ag systems historically used for assessment. Using primary TCD4+s and monocyte-derived DCs from healthy donors, we show that activated human TCD4+s are highly effective at MHC II-restricted presentation of an immunodominant HIV-1-derived epitope postinfection and subsequent noncanonical processing and presentation of endogenously produced Ag. Our results indicate that, in addition to marshalling HIV-1-specific immune responses during infection, TCD4+s also act as APCs, leading to the activation of HIV-1-specific TCD4+s.
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Affiliation(s)
- Mary M. Addison
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, 19104.,Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104
| | - Gavin I. Ellis
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104
| | - George J. Leslie
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104
| | - Noah B. Zawadzky
- School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, 19104
| | - James L. Riley
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104
| | - James A. Hoxie
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104
| | - Laurence C. Eisenlohr
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, 19104.,Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104
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Kumar Singh A, Padwal V, Palav H, Velhal S, Nagar V, Patil P, Patel V. Highly dampened HIV-specific cytolytic effector T cell responses define viremic non-progression. Immunobiology 2022; 227:152234. [PMID: 35671626 DOI: 10.1016/j.imbio.2022.152234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/30/2022] [Indexed: 11/05/2022]
Abstract
This study reports on HIV-specific T cell responses in HIV-1 infected Viremic Non-Progressors (VNPs), a rare group of people living with HIV that exhibit asymptomatic infection over several years accompanied by stable CD4+ T cell counts in spite of ongoing viral replication. We attempted to identify key virus-specific functional attributes that could underlie the apparently paradoxical virus-host equilibrium observed in VNPs. Our results revealed modulation of HIV-specific CD4+ and CD8+ effector T cell responses in VNPs towards a dominant non-cytolytic profile with concomitantly diminished degranulation (CD107a+) ability. Further, the HIV specific CD8+ effector T cell response was primarily enriched for MIP-1β producing cells. As expected, concordant with better viral suppression, VCs exhibit a robust cytolytic T cell response. Interestingly, PuPs shared features common to both these responses but did not exhibit a CD4+ central memory IFN-γ producing Gag-specific response that was shared by both non-progressor (VC and VNP) groups, suggesting CD4 helper response is critical for non-progression. Our study also revealed that cytolytic response in VNPs is primarily limited to polyfunctional cells while both monofunctional and polyfunctional cells significantly contribute to cytolytic responses in VCs. To further understand mechanisms underlying the unique HIV-specific effector T cell response described here in VNPs we also evaluated and demonstrated a possible role for altered gut homing in these individuals. Our findings inform immunotherapeutic interventions to achieve functional cures in the context of ART resistance and serious non AIDS events.
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Affiliation(s)
- Amit Kumar Singh
- Viral Immunopathogenesis Laboratory, ICMR-National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India
| | - Varsha Padwal
- Viral Immunopathogenesis Laboratory, ICMR-National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India
| | - Harsha Palav
- Viral Immunopathogenesis Laboratory, ICMR-National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India
| | - Shilpa Velhal
- Viral Immunopathogenesis Laboratory, ICMR-National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India
| | - Vidya Nagar
- Department of Medicine, Grant Medical College & Sir J. J. Group of Hospitals, Mumbai, Maharashtra, India
| | - Priya Patil
- Department of Medicine, Grant Medical College & Sir J. J. Group of Hospitals, Mumbai, Maharashtra, India
| | - Vainav Patel
- Viral Immunopathogenesis Laboratory, ICMR-National Institute for Research in Reproductive Health, Mumbai, Maharashtra, India.
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Podrazil M, Taborska P, Stakheev D, Rataj M, Lastovicka J, Vlachova A, Pohunek P, Bartunkova J, Smrz D. Effectiveness and Durability of mRNA Vaccine-Induced SARS-CoV-2-Specific Humoral and Cellular Immunity in Severe Asthma Patients on Biological Therapy. Front Immunol 2022; 13:892277. [PMID: 35669765 PMCID: PMC9163958 DOI: 10.3389/fimmu.2022.892277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/22/2022] [Indexed: 12/20/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) vaccines effectively elicit humoral and cellular immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in healthy populations. This immunity decreases several months after vaccination. However, the efficacy of vaccine-induced immunity and its durability in patients with severe asthma on biological therapy are unknown. In this study, we evaluated the effectiveness and durability of mRNA vaccine-induced SARS-CoV-2-specific humoral and cellular immunity in severe asthma patients on biological therapy. The study included 34 patients with severe asthma treated with anti-IgE (omalizumab, n=17), anti-IL5 (mepolizumab, n=13; reslizumab, n=3), or anti-IL5R (benralizumab, n=1) biological therapy. All patients were vaccinated with two doses of the BNT162b2 mRNA vaccine with a 6-week interval between the doses. We found that this COVID-19 vaccination regimen elicited SARS-CoV-2-specific humoral and cellular immunity, which had significantly declined 6 months after receipt of the second dose of the vaccine. The type of biological treatment did not affect vaccine-elicited immunity. However, patient age negatively impacted the vaccine-induced humoral response. On the other hand, no such age-related impact on vaccine-elicited cellular immunity was observed. Our findings show that treatment of patients with severe asthma with biological therapy does not compromise the effectiveness or durability of COVID-19 vaccine-induced immunity.
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Affiliation(s)
- Michal Podrazil
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Pavla Taborska
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Dmitry Stakheev
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Michal Rataj
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Jan Lastovicka
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Alena Vlachova
- Department of Pneumology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Petr Pohunek
- Department of Pediatrics, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Jirina Bartunkova
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
| | - Daniel Smrz
- Department of Immunology, Second Faculty of Medicine, Charles University, and Motol University Hospital, Prague, Czechia
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11
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Abstract
Viruses are essentially, obligate intracellular parasites. They require a host to replicate their genetic material, spread to other cells, and eventually to other hosts. For humans, most viral infections are not considered lethal, regardless if at the cellular level, the virus can obliterate individual cells. Constant genomic mutations, (which can alter the antigenic content of viruses such as influenza or coronaviruses), zoonosis or immunosuppression/immunocompromisation, is when viruses achieve higher host mortality. Frequent examples of the severe consequenses of viral infection can be seen in children and the elderly. In most instances, the immune system will take a multifaceted approach in defending the host against viruses. Depending on the virus, the individual, and the point of entry, the immune system will initiate a robust response which involves multiple components. In this chapter, we expand on the total immune system, breaking it down to the two principal types: Innate and Adaptive Immunity, their different roles in viral recognition and clearance. Finally, how different viruses activate and evade different arms of the immune system.
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12
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Chen J, Wang B, Caserto JS, Shariati K, Cao P, Pan Y, Xu Q, Ma M. Sustained Delivery of SARS-CoV-2 RBD Subunit Vaccine Using a High Affinity Injectable Hydrogel Scaffold. Adv Healthc Mater 2022; 11:e2101714. [PMID: 34755476 PMCID: PMC8652948 DOI: 10.1002/adhm.202101714] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/26/2021] [Indexed: 12/12/2022]
Abstract
The receptor binding domain (RBD) of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) spike protein that mediates viral entry into host cells is a good candidate immunogen for vaccine development against coronavirus disease 2019 (COVID‐19). Because of its small size, most preclinical and early clinical efforts have focused on multimerizing RBD on various formats of nanoparticles to increase its immunogenicity. Using an easily administered injectable hydrogel scaffold that is rationally designed for enhanced retainment of RBD, an alternative and facile approach for boosting RBD immunogenicity in mice is demonstrated. Prolonged delivery of poly (I:C) adjuvanted RBD by the hydrogel scaffold results in sustained exposure to lymphoid tissues, which elicits serum IgG titers comparable to those induced by three bolus injections, but more long‐lasting and polarized toward TH1‐mediated IgG2b. The hydrogel scaffold induces potent germinal center (GC) reactions, correlating with RBD‐specific antibody generation and robust type 1 T cell responses. Besides being an enduring RBD reservoir, the hydrogel scaffold becomes a local inflammatory niche for innate immune cell activation. Collectively, the injectable hydrogel scaffold provides a simple, practical, and inexpensive means to enhance the efficacy of RBD‐based subunit vaccines against COVID‐19 and may be applicable to other circulating and emerging pathogens.
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Affiliation(s)
- Jing Chen
- Department of Biological and Environmental Engineering Cornell University Ithaca NY 14853 USA
| | - Bo Wang
- Department of Biological and Environmental Engineering Cornell University Ithaca NY 14853 USA
| | - Julia S. Caserto
- Robert Frederick Smith School of Chemical and Biomolecular Engineering Cornell University Ithaca NY 14853 USA
| | - Kaavian Shariati
- Department of Biological and Environmental Engineering Cornell University Ithaca NY 14853 USA
| | - Peng Cao
- College of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Yang Pan
- College of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Qixuan Xu
- College of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 China
| | - Minglin Ma
- Department of Biological and Environmental Engineering Cornell University Ithaca NY 14853 USA
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13
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Hau TTT, Kanno Y, Nishizawa M, Nomura T, Matano T, Yamamoto H. Nef-specific CD107a + CD4 + T-cell responses in a rhesus macaque (Macaca mulatta) showing partial simian immunodeficiency virus control following passive neutralizing antibody infusion. J Med Primatol 2021; 51:56-61. [PMID: 34750827 DOI: 10.1111/jmp.12551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/24/2021] [Accepted: 10/27/2021] [Indexed: 12/01/2022]
Abstract
Acute-phase neutralizing antibody (NAb) passive immunization in simian immunodeficiency virus (SIV)-infected rhesus macaques (Macaca mulatta) can confer stringent viremia control with T-cell augmentation. In one NAb-infused SIV partial controller, we identify chronic-phase Nef-specific CD107a+ CD4+ T-cell response maintenance, implicating that NAb infusion modulates long-term T-cell responses even within viremic control.
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Affiliation(s)
- Trang Thi Thu Hau
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan.,Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Yoshiaki Kanno
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan.,The Institute of Medical Science/Graduate School of Medicine/Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Masako Nishizawa
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takushi Nomura
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tetsuro Matano
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan.,Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.,The Institute of Medical Science/Graduate School of Medicine/Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Yamamoto
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan.,Department of Biomedicine, University Hospital Basel, Basel, Switzerland
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14
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Zhang YN, Paynter J, Sou C, Fourfouris T, Wang Y, Abraham C, Ngo T, Zhang Y, He L, Zhu J. Mechanism of a COVID-19 nanoparticle vaccine candidate that elicits a broadly neutralizing antibody response to SARS-CoV-2 variants. SCIENCE ADVANCES 2021; 7:eabj3107. [PMID: 34669468 PMCID: PMC8528426 DOI: 10.1126/sciadv.abj3107] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/27/2021] [Indexed: 05/12/2023]
Abstract
Vaccines that induce potent neutralizing antibody (NAb) responses against emerging variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are essential for combating the coronavirus disease 2019 (COVID-19) pandemic. We demonstrated that mouse plasma induced by self-assembling protein nanoparticles (SApNPs) that present 20 rationally designed S2GΔHR2 spikes of the ancestral Wuhan-Hu-1 strain can neutralize the B.1.1.7, B.1.351, P.1, and B.1.617 variants with comparable potency. The adjuvant effect on vaccine-induced immunity was investigated by testing 16 formulations for the multilayered I3-01v9 SApNP. Using single-cell sorting, monoclonal antibodies (mAbs) with diverse neutralization breadth and potency were isolated from mice immunized with the receptor binding domain (RBD), S2GΔHR2 spike, and SApNP vaccines. The mechanism of vaccine-induced immunity was examined in the mouse model. Compared with the soluble spike, the I3-01v9 SApNP showed sixfold longer retention, fourfold greater presentation on follicular dendritic cell dendrites, and fivefold stronger germinal center reactions in lymph node follicles.
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Affiliation(s)
- Yi-Nan Zhang
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jennifer Paynter
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Cindy Sou
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Tatiana Fourfouris
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ying Wang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, PA 19140, USA
| | - Ciril Abraham
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19140, USA
| | - Timothy Ngo
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Yi Zhang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, PA 19140, USA
| | - Linling He
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jiang Zhu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA
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15
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Zhang YN, Paynter J, Sou C, Fourfouris T, Wang Y, Abraham C, Ngo T, Zhang Y, He L, Zhu J. Mechanism of a COVID-19 nanoparticle vaccine candidate that elicits a broadly neutralizing antibody response to SARS-CoV-2 variants. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021:2021.03.26.437274. [PMID: 33791704 PMCID: PMC8010731 DOI: 10.1101/2021.03.26.437274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Vaccines that induce potent neutralizing antibody (NAb) responses against emerging variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are essential for combating the coronavirus disease 2019 (COVID-19) pandemic. We demonstrated that mouse plasma induced by self-assembling protein nanoparticles (SApNPs) that present 20 rationally designed S2GΔHR2 spikes of the ancestral Wuhan-Hu-1 strain can neutralize the B.1.1.7, B.1.351, P.1, and B.1.617 variants with the same potency. The adjuvant effect on vaccine-induced immunity was investigated by testing 16 formulations for the multilayered I3-01v9 SApNP. Using single-cell sorting, monoclonal antibodies (mAbs) with diverse neutralization breadth and potency were isolated from mice immunized with the receptor binding domain (RBD), S2GΔHR2 spike, and SApNP vaccines. The mechanism of vaccine-induced immunity was examined in mice. Compared with the soluble spike, the I3-01v9 SApNP showed 6-fold longer retention, 4-fold greater presentation on follicular dendritic cell dendrites, and 5-fold stronger germinal center reactions in lymph node follicles.
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Affiliation(s)
- Yi-Nan Zhang
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Jennifer Paynter
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Cindy Sou
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Tatiana Fourfouris
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Ying Wang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, Pennsylvania 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, Pennsylvania 19140, USA
| | - Ciril Abraham
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, Pennsylvania 19140, USA
| | - Timothy Ngo
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Yi Zhang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, Pennsylvania 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, Pennsylvania 19140, USA
| | - Linling He
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Jiang Zhu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California 92037, USA
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16
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Yang Z, Hua L, Yang M, Liu SQ, Shen J, Li W, Long Q, Bai H, Yang X, Ren Z, Zheng X, Sun W, Ye C, Li D, Zheng P, He J, Chen Y, Huang W, Peng X, Ma Y. RBD-Modified Bacterial Vesicles Elicited Potential Protective Immunity against SARS-CoV-2. NANO LETTERS 2021; 21:5920-5930. [PMID: 34279108 PMCID: PMC8315139 DOI: 10.1021/acs.nanolett.1c00680] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 07/02/2021] [Indexed: 05/13/2023]
Abstract
The disease caused by SARS-CoV-2 infection threatens human health. In this study, we used high-pressure homogenization technology not only to efficiently drive the bacterial membrane to produce artificial vesicles but also to force the fusion protein ClyA-receptor binding domain (RBD) to pass through gaps in the bacterial membrane to increase the contact between ClyA-RBD and the membrane. Therefore, the load of ClyA-RBD on the membrane is substantially increased. Using this technology, we constructed a "ring-like" bacterial biomimetic vesicle (BBV) loaded with polymerized RBD (RBD-BBV). RBD-BBVs injected subcutaneously can accumulate in lymph nodes, promote antigen uptake and processing, and elicit SARS-CoV-2-specific humoral and cellular immune responses in mice. In conclusion, we evaluated the potential of this novel bacterial vesicle as a vaccine delivery system and provided a new idea for the development of SARS-CoV-2 vaccines.
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Affiliation(s)
- Zhongqian Yang
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Liangqun Hua
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
- Yunnan
University, Kunming, China
| | - Mengli Yang
- National
Kunming High-level Biosafety Primate Research Center, Institute of
Medical Biology, Chinese Academy of Medical
Sciences and Peking Union Medical College, Kunming, China
| | - Shu-Qun Liu
- Yunnan
University, Kunming, China
- State
Key Laboratory for Conservation and Utilization of Bio-Resources in
Yunnan & School of Life Sciences, Yunnan
University, Kunming, China
| | - Jianxin Shen
- Yunnan
University, Kunming, China
- State
Key Laboratory for Conservation and Utilization of Bio-Resources in
Yunnan & School of Life Sciences, Yunnan
University, Kunming, China
| | - Weiran Li
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Qiong Long
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Hongmei Bai
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Xu Yang
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Zhaoling Ren
- The
Second Affiliated Hospital of Kunming Medical University, Kunming, China
- Kunming
Medical University, Kunming, China
| | - Xiao Zheng
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
- Yunnan
University, Kunming, China
| | - Wenjia Sun
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Chao Ye
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Duo Li
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
- Department
of Acute Infectious Diseases Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming, China
| | - Peng Zheng
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Jinrong He
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
- Kunming
Medical University, Kunming, China
| | - Yongjun Chen
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Weiwei Huang
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
| | - Xiaozhong Peng
- National
Kunming High-level Biosafety Primate Research Center, Institute of
Medical Biology, Chinese Academy of Medical
Sciences and Peking Union Medical College, Kunming, China
- State
Key Laboratory of Medical Molecular Biology, Department of Molecular
Biology and Biochemistry, Institute of Basic Medical Sciences, Medical
Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking
Union Medical College, Beijing, China
| | - Yanbing Ma
- Laboratory
of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union
Medical College, Kunming, China
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17
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Weber MG, Walters-Laird CJ, Kol A, Santos Rocha C, Hirao LA, Mende A, Balan B, Arredondo J, Elizaldi SR, Iyer SS, Tarantal AF, Dandekar S. Gut germinal center regeneration and enhanced antiviral immunity by mesenchymal stem/stromal cells in SIV infection. JCI Insight 2021; 6:149033. [PMID: 34014838 PMCID: PMC8262475 DOI: 10.1172/jci.insight.149033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/19/2021] [Indexed: 12/20/2022] Open
Abstract
Although antiretroviral therapy suppresses HIV replication, it does not eliminate viral reservoirs or restore damaged lymphoid tissue, posing obstacles to HIV eradication. Using the SIV model of AIDS, we investigated the effect of mesenchymal stem/stromal cell (MSC) infusions on gut mucosal recovery, antiviral immunity, and viral suppression and determined associated molecular/metabolic signatures. MSC administration to SIV-infected macaques resulted in viral reduction and heightened virus-specific responses. Marked clearance of SIV-positive cells from gut mucosal effector sites was correlated with robust regeneration of germinal centers, restoration of follicular B cells and T follicular helper (Tfh) cells, and enhanced antigen presentation by viral trapping within the follicular DC network. Gut transcriptomic analyses showed increased antiviral response mediated by pathways of type I/II IFN signaling, viral restriction factors, innate immunity, and B cell proliferation and provided the molecular signature underlying enhanced host immunity. Metabolic analysis revealed strong correlations between B and Tfh cell activation, anti-SIV antibodies, and IL-7 expression with enriched retinol metabolism, which facilitates gut homing of antigen-activated lymphocytes. We identified potentially new MSC functions in modulating antiviral immunity for enhanced viral clearance predominantly through type I/II IFN signaling and B cell signature, providing a road map for multipronged HIV eradication strategies.
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Affiliation(s)
| | | | - Amir Kol
- Department of Pathology, Microbiology and Immunology, University of California Davis, Davis, California, USA
| | | | | | - Abigail Mende
- Department of Medical Microbiology and Immunology and
| | - Bipin Balan
- Dipartimento di Scienze Agrarie Alimentari Forestali, Università di Palermo, Viale delle Scienze, Palermo, Italy
| | | | | | - Smita S Iyer
- Department of Pathology, Microbiology and Immunology, University of California Davis, Davis, California, USA.,Center for Immunology and Infectious Diseases.,California National Primate Research Center, and
| | - Alice F Tarantal
- California National Primate Research Center, and.,Departments of Pediatrics and Cell Biology and Human Anatomy, University of California Davis, Davis, California, USA
| | - Satya Dandekar
- Department of Medical Microbiology and Immunology and.,California National Primate Research Center, and
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18
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He L, Lin X, Wang Y, Abraham C, Sou C, Ngo T, Zhang Y, Wilson IA, Zhu J. Single-component, self-assembling, protein nanoparticles presenting the receptor binding domain and stabilized spike as SARS-CoV-2 vaccine candidates. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021:2020.09.14.296715. [PMID: 32995773 PMCID: PMC7523099 DOI: 10.1101/2020.09.14.296715] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Vaccination against SARS-CoV-2 provides an effective tool to combat the COIVD-19 pandemic. Here, we combined antigen optimization and nanoparticle display to develop vaccine candidates for SARS-CoV-2. We first displayed the receptor-binding domain (RBD) on three self-assembling protein nanoparticle (SApNP) platforms using the SpyTag/SpyCatcher system. We then identified heptad repeat 2 (HR2) in S2 as the cause of spike metastability, designed an HR2-deleted glycine-capped spike (S2GΔHR2), and displayed S2GΔHR2 on SApNPs. An antibody column specific for the RBD enabled tag-free vaccine purification. In mice, the 24-meric RBD-ferritin SApNP elicited a more potent neutralizing antibody (NAb) response than the RBD alone and the spike with two stabilizing proline mutations in S2 (S2P). S2GΔHR2 elicited two-fold-higher NAb titers than S2P, while S2GΔHR2 SApNPs derived from multilayered E2p and I3-01v9 60-mers elicited up to 10-fold higher NAb titers. The S2GΔHR2-presenting I3-01v9 SApNP also induced critically needed T-cell immunity, thereby providing a promising vaccine candidate.
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Affiliation(s)
- Linling He
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Xiaohe Lin
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Ying Wang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, Pennsylvania 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, Pennsylvania 19140, USA
| | - Ciril Abraham
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, Pennsylvania 19140, USA
| | - Cindy Sou
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Timothy Ngo
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Yi Zhang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, Pennsylvania 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, Pennsylvania 19140, USA
| | - Ian A. Wilson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
- Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | - Jiang Zhu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California 92037, USA
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19
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Tebas P, Jadlowsky JK, Shaw PA, Tian L, Esparza E, Brennan AL, Kim S, Naing SY, Richardson MW, Vogel AN, Maldini CR, Kong H, Liu X, Lacey SF, Bauer AM, Mampe F, Richman LP, Lee G, Ando D, Levine BL, Porter DL, Zhao Y, Siegel DL, Bar KJ, June CH, Riley JL. CCR5-edited CD4+ T cells augment HIV-specific immunity to enable post-rebound control of HIV replication. J Clin Invest 2021; 131:144486. [PMID: 33571163 PMCID: PMC8011906 DOI: 10.1172/jci144486] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/03/2021] [Indexed: 12/15/2022] Open
Abstract
BackgroundWe conducted a phase I clinical trial that infused CCR5 gene-edited CD4+ T cells to determine how these T cells can better enable HIV cure strategies.MethodsThe aim of trial was to develop RNA-based approaches to deliver zinc finger nuclease (ZFN), evaluate the effect of CCR5 gene-edited CD4+ T cells on the HIV-specific T cell response, test the ability of infused CCR5 gene-edited T cells to delay viral rebound during analytical treatment interruption, and determine whether individuals heterozygous for CCR5 Δ32 preferentially benefit. We enrolled 14 individuals living with HIV whose viral load was well controlled by antiretroviral therapy (ART). We measured the time to viral rebound after ART withdrawal, the persistence of CCR5-edited CD4+ T cells, and whether infusion of 10 billion CCR5-edited CD4+ T cells augmented the HIV-specific immune response.ResultsInfusion of the CD4+ T cells was well tolerated, with no serious adverse events. We observed a modest delay in the time to viral rebound relative to historical controls; however, 3 of the 14 individuals, 2 of whom were heterozygous for CCR5 Δ32, showed post-viral rebound control of viremia, before ultimately losing control of viral replication. Interestingly, only these individuals had substantial restoration of HIV-specific CD8+ T cell responses. We observed immune escape for 1 of these reinvigorated responses at viral recrudescence, illustrating a direct link between viral control and enhanced CD8+ T cell responses.ConclusionThese findings demonstrate how CCR5 gene-edited CD4+ T cell infusion could aid HIV cure strategies by augmenting preexisting HIV-specific immune responses.REGISTRATIONClinicalTrials.gov NCT02388594.FundingNIH funding (R01AI104400, UM1AI126620, U19AI149680, T32AI007632) was provided by the National Institute of Allergy and Infectious Diseases (NIAID), the National Institute on Drug Abuse (NIDA), the National Institute of Mental Health (NIMH), and the National Institute of Neurological Disorders and Stroke (NINDS). Sangamo Therapeutics also provided funding for these studies.
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Affiliation(s)
| | | | - Pamela A. Shaw
- Department of Biostatistics, Epidemiology and Informatics, and
| | - Lifeng Tian
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Erin Esparza
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Andrea L. Brennan
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | - Ashley N. Vogel
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Colby R. Maldini
- Department of Microbiology and Center for Cellular Immunotherapies
| | - Hong Kong
- Department of Microbiology and Center for Cellular Immunotherapies
| | - Xiaojun Liu
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Simon F. Lacey
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | - Gary Lee
- Sangamo Therapeutics Inc., Richmond, California, USA
| | - Dale Ando
- Sangamo Therapeutics Inc., Richmond, California, USA
| | - Bruce L. Levine
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Yangbing Zhao
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Don L. Siegel
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Carl H. June
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - James L. Riley
- Department of Microbiology and Center for Cellular Immunotherapies
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20
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Jilg N, Garcia-Broncano P, Peluso M, Segal FP, Bosch RJ, Roberts-Toler C, Chen SMY, Van Dam CN, Keefer MC, Kuritzkes DR, Landay AL, Deeks S, Yu XG, Sax PE, Li JZ. Maintenance of Viral Suppression in Human Immunodeficiency Virus Controllers Despite Waning T-Cell Responses During Antiretroviral Therapy. J Infect Dis 2021; 222:1837-1842. [PMID: 32496516 DOI: 10.1093/infdis/jiaa294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 05/28/2020] [Indexed: 12/18/2022] Open
Abstract
AIDS Clinical Trials Group study A5308 found reduced T-cell activation and exhaustion in human immunodeficiency virus (HIV) controllers start antiretroviral therapy (ART). We further assessed HIV-specific T-cell responses and post-ART viral loads. Before ART, the 31% of participants with persistently undetectable viremia had more robust HIV-specific T-cell responses. During ART, significant decreases were observed in a broad range of T-cell responses. Eight controllers in A5308 and the Study of the Consequences of the Protease Inhibitor Era (SCOPE) cohort showed no viremia above the level of quantification in the first 12 weeks after ART discontinuation. ART significantly reduced HIV-specific T-cell responses in HIV controllers but did not adversely affect controller status after ART discontinuation.
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Affiliation(s)
- Nikolaus Jilg
- Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Michael Peluso
- University of California, San Francisco, California, USA
| | - Florencia P Segal
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ronald J Bosch
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | | | - Samantha M Y Chen
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
| | | | - Michael C Keefer
- University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Daniel R Kuritzkes
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Alan L Landay
- Rush University Medical Center, Chicago, Illinois, USA
| | - Steven Deeks
- University of California, San Francisco, California, USA
| | - Xu G Yu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
| | - Paul E Sax
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan Z Li
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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21
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He L, Lin X, Wang Y, Abraham C, Sou C, Ngo T, Zhang Y, Wilson IA, Zhu J. Single-component, self-assembling, protein nanoparticles presenting the receptor binding domain and stabilized spike as SARS-CoV-2 vaccine candidates. SCIENCE ADVANCES 2021; 7:eabf1591. [PMID: 33741598 PMCID: PMC7978432 DOI: 10.1126/sciadv.abf1591] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 02/02/2021] [Indexed: 05/14/2023]
Abstract
Vaccination against SARS-CoV-2 provides an effective tool to combat the COVID-19 pandemic. Here, we combined antigen optimization and nanoparticle display to develop vaccine candidates for SARS-CoV-2. We first displayed the receptor-binding domain (RBD) on three self-assembling protein nanoparticle (SApNP) platforms using the SpyTag/SpyCatcher system. We then identified heptad repeat 2 (HR2) in S2 as the cause of spike metastability, designed an HR2-deleted glycine-capped spike (S2GΔHR2), and displayed S2GΔHR2 on SApNPs. An antibody column specific for the RBD enabled tag-free vaccine purification. In mice, the 24-meric RBD-ferritin SApNP elicited a more potent neutralizing antibody (NAb) response than the RBD alone and the spike with two stabilizing proline mutations in S2 (S2P). S2GΔHR2 elicited twofold higher NAb titers than S2P, while S2GΔHR2 SApNPs derived from multilayered E2p and I3-01v9 60-mers elicited up to 10-fold higher NAb titers. The S2GΔHR2-presenting I3-01v9 SApNP also induced critically needed T cell immunity, thereby providing a promising vaccine candidate.
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Affiliation(s)
- Linling He
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Xiaohe Lin
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ying Wang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, PA 19140, USA
| | - Ciril Abraham
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19140, USA
| | - Cindy Sou
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Timothy Ngo
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Yi Zhang
- Fels Institute for Cancer Research and Molecular Biology, Temple University, Philadelphia, PA 19140, USA
- Department of Microbiology and Immunology, Temple University, Philadelphia, PA 19140, USA
| | - Ian A Wilson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
- Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jiang Zhu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA
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22
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New insights into regulatory B cells biology in viral, bacterial, and parasitic infections. INFECTION GENETICS AND EVOLUTION 2021; 89:104753. [PMID: 33545392 DOI: 10.1016/j.meegid.2021.104753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/16/2021] [Accepted: 01/29/2021] [Indexed: 12/14/2022]
Abstract
B lymphocytes are primarily well known for their contribution to immunity by antibody production, antigen presentation and, the production of cytokines. In recent years several studies demonstrated the existence of B cells with regulatory functions, which have been termed regulatory B cells (Bregs), similar to regulatory T cells (Tregs). Bregs are a subpopulation of B cells that have immunosuppressive effects via the production of regulatory cytokines including interleukin-10 (IL-10), transforming growth factor-β (TGF-β), and IL-35. Bregs limit host defense against various pathogens. In addition, Bregs contribute to increased levels of regulatory cytokines and leads to an induction of suppressive Tregs, which exert broader suppressive functions against various pathogens. The high percentage of Bregs is positively associated with viral and bacterial load and can contribute to poor vaccine responses. Bregs can also facilitate pathogen survival at an early stage of infection, and subsequently cause increased severity of disease by inhibiting pro-inflammatory cytokine production, macrophage activation, and inflammatory T cells activation such as Th1, Th17, and Th22. Also, Bregs afford protection against the hyper-inflammatory response in parasitic infections. Here we review the central role of Bregs in many major bacterial and viral human infections, and provide an overview of the immunoregulatory mechanisms used by Bregs.
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23
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Collora JA, Liu R, Albrecht K, Ho YC. The single-cell landscape of immunological responses of CD4+ T cells in HIV versus severe acute respiratory syndrome coronavirus 2. Curr Opin HIV AIDS 2021; 16:36-47. [PMID: 33165008 PMCID: PMC8162470 DOI: 10.1097/coh.0000000000000655] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW CD4 T cell loss is the hallmark of uncontrolled HIV-1 infection. Strikingly, CD4 T cell depletion is a strong indicator for disease severity in the recently emerged coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We reviewed recent single-cell immune profiling studies in HIV-1 infection and COVID-19 to provide critical insight in virus-induced immunopathogenesis. RECENT FINDINGS Cytokine dysregulation in HIV-1 leads to chronic inflammation, while severe SARS-CoV-2 infection induces cytokine release syndrome and increased mortality. HIV-1-specific CD4 T cells are dysfunctional, while SARS-CoV-2-specific CD4 T cells exhibit robust Th1 function and correlate with protective antibody responses. In HIV-1 infection, follicular helper T cells (TFH) are susceptible to HIV-1 infection and persist in immune-sanctuary sites in lymphoid tissues as an HIV-1 reservoir. In severe SARS-CoV-2 infection, TFH are absent in lymphoid tissues and are associated with diminished protective immunity. Advancement in HIV-1 DNA, RNA, and protein-based single-cell capture methods can overcome the rarity and heterogeneity of HIV-1-infected cells and identify mechanisms of HIV-1 persistence and clonal expansion dynamics. SUMMARY Single-cell immune profiling identifies a high-resolution picture of immune dysregulation in HIV-1 and SARS-CoV-2 infection and informs outcome prediction and therapeutic interventions.
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Affiliation(s)
- Jack A Collora
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, USA
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24
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Law JC, Koh WH, Budylowski P, Lin J, Yue F, Abe KT, Rathod B, Girard M, Li Z, Rini JM, Mubareka S, McGeer A, Chan AK, Gingras AC, Watts TH, Ostrowski MA. Systematic Examination of Antigen-Specific Recall T Cell Responses to SARS-CoV-2 versus Influenza Virus Reveals a Distinct Inflammatory Profile. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 206:37-50. [PMID: 33208459 PMCID: PMC7750861 DOI: 10.4049/jimmunol.2001067] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022]
Abstract
There is a pressing need for an in-depth understanding of immunity to SARS-CoV-2. In this study, we investigated human T cell recall responses to fully glycosylated spike trimer, recombinant N protein, as well as to S, N, M, and E peptide pools in the early convalescent phase and compared them with influenza-specific memory responses from the same donors. All subjects showed SARS-CoV-2-specific T cell responses to at least one Ag. Both SARS-CoV-2-specific and influenza-specific CD4+ T cell responses were predominantly of the central memory phenotype; however SARS-CoV-2-specific CD4+ T cells exhibited a lower IFN-γ to TNF ratio compared with influenza-specific memory responses from the same donors, independent of disease severity. SARS-CoV-2-specific T cells were less multifunctional than influenza-specific T cells, particularly in severe cases, potentially suggesting exhaustion. Most SARS-CoV-2-convalescent subjects also produced IFN-γ in response to seasonal OC43 S protein. We observed granzyme B+/IFN-γ+, CD4+, and CD8+ proliferative responses to peptide pools in most individuals, with CD4+ T cell responses predominating over CD8+ T cell responses. Peripheral T follicular helper (pTfh) responses to S or N strongly correlated with serum neutralization assays as well as receptor binding domain-specific IgA; however, the frequency of pTfh responses to SARS-CoV-2 was lower than the frequency of pTfh responses to influenza virus. Overall, T cell responses to SARS-CoV-2 are robust; however, CD4+ Th1 responses predominate over CD8+ T cell responses, have a more inflammatory profile, and have a weaker pTfh response than the response to influenza virus within the same donors, potentially contributing to COVID-19 disease.
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Affiliation(s)
- Jaclyn C Law
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Wan Hon Koh
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 3H2, Canada
| | - Patrick Budylowski
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 3H2, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Jonah Lin
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - FengYun Yue
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 3H2, Canada
| | - Kento T Abe
- Lunenfeld-Tanenbaum Research Institute at Mt. Sinai Hospital, Sinai Health System, Toronto, Ontario M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Bhavisha Rathod
- Lunenfeld-Tanenbaum Research Institute at Mt. Sinai Hospital, Sinai Health System, Toronto, Ontario M5G 1X5, Canada
| | - Melanie Girard
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Zhijie Li
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - James M Rini
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Samira Mubareka
- Sunnybrook Research Institute, Toronto, Ontario M4N 3M5, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Allison McGeer
- Lunenfeld-Tanenbaum Research Institute at Mt. Sinai Hospital, Sinai Health System, Toronto, Ontario M5G 1X5, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Adrienne K Chan
- Sunnybrook Research Institute, Toronto, Ontario M4N 3M5, Canada
- Division of Infectious Diseases, Department of Medicine, University of Toronto, Toronto, Ontario M5S 3H2, Canada; and
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum Research Institute at Mt. Sinai Hospital, Sinai Health System, Toronto, Ontario M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Tania H Watts
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada;
| | - Mario A Ostrowski
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 3H2, Canada
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Unity Health Toronto, Toronto, Ontario M5B 1W8, Canada
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25
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The importance of advanced cytometry in defining new immune cell types and functions relevant for the immunopathogenesis of HIV infection. AIDS 2020; 34:2169-2185. [PMID: 32910071 DOI: 10.1097/qad.0000000000002675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
: In the last years, novel, exciting immunological findings of interest for HIV research and treatment were identified thanks to different cytometric approaches. The analysis of the phenotypes and functionality of cells belonging to the immune system could clarify their role in the immunopathogenesis of HIV infection, and to elaborate key concepts, relevant in the treatment of this disease. Important discoveries have been made concerning cells that are important for protective immunity like lymphocytes that display polyfunctionality, resident memory T cells, innate lymphoid cells, to mention a few. The complex phenotype of myeloid-derived suppressor cells has been investigated, and relevant changes have been reported during chronic and primary HIV infection, in correlation with changes in CD4 T-cell number, T-cell activation, and with advanced disease stage. The search for markers of HIV persistence present in latently infected cells, namely those molecules that are important for a functional or sterilizing cure, evidenced the role of follicular helper T cells, and opened a discussion on the meaning and use of different surface molecules not only in identifying such cells, but also in designing new strategies. Finally, advanced technologies based upon the simultaneous detection of HIV-RNA and proteins at the single cell level, as well as those based upon spectral cytometry or mass cytometry are now finding new actors and depicting a new scenario in the immunopathogenesis of the infection, that will allow to better design innovative therapies based upon novel drugs and vaccines.
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26
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Meziane FZ, Dali-Sahi M, Dennouni-Medjati N, Boulenouar H, Kachekouche Y, Benslama Y, Harek Y. Molecular mimicry between varicella, measles virus and Hsp60 in type 1 diabetes associated HLA-DR3/DR4 molecules. Diabetes Metab Syndr 2020; 14:1783-1789. [PMID: 32947109 DOI: 10.1016/j.dsx.2020.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 08/05/2020] [Accepted: 08/11/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Type 1 diabetes (T1D) is a multifactorial autoimmune disease that combines genetics and environmental factors. The aim of this study is to determine the environmental risk factors and to investigate how virals infections are risks factors for type 1 diabetics whom have HLA DR3/DR4 predisposition in our population. METHODS This study includes 233 subjects, 145 diabetics and 88 controls from regions of the extreme western of Algeria. All the informations related to the disease were collected using predesigned questionnaire. Using in silico approach, we attempt to improve the understanding of this analytical result by molecular mimicry, which is associated with the breakdown of several autoimmune pathologies. RESULTS The statistical study showed that history of varicella and measles infection and T1D related inheritance and type 2 diabetes are risk factors for T1D in the population of Tlemcen. We have determined the homologous antigenic regions between the glycoprotein "gE" of the varicella virus, the "hemagglutinin" of measles and the human protein "HSP60" at the level of their sequence and 3D structure. These cross-reactive epitopes bind to MHC class II molecules (HLA DR3/DR4) that predispose to T1D but not to MHC class II molecules (HLA DR2) that protect against T1D. This epitopes induce Th2 cells but only "hemagglutinin" and "Hsp60" can activate Th1 differentiation. This indicates their potential to destroy pancreatic cells β. CONCLUSION Our study can allow us to adapt biological markers to genetically predisposed T1D and to establish a preventive strategy for healthy genetic predisposed individuals in Tlemcen population.
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Affiliation(s)
- Fatima Zohra Meziane
- Department of Biology, Laboratory of Analytical Chemistry and Electrochemistry, Unviversity of Tlemcen, Algeria.
| | - Majda Dali-Sahi
- Department of Biology, Laboratory of Analytical Chemistry and Electrochemistry, Unviversity of Tlemcen, Algeria
| | - Nouria Dennouni-Medjati
- Department of Biology, Laboratory of Analytical Chemistry and Electrochemistry, Unviversity of Tlemcen, Algeria
| | | | - Youssouf Kachekouche
- Department of Biology, Laboratory of Analytical Chemistry and Electrochemistry, Unviversity of Tlemcen, Algeria
| | - Yasmine Benslama
- Department of Biology, Laboratory of Analytical Chemistry and Electrochemistry, Unviversity of Tlemcen, Algeria
| | - Yahia Harek
- Department of Biology, Laboratory of Analytical Chemistry and Electrochemistry, Unviversity of Tlemcen, Algeria
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27
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Shindiapina P, Ahmed EH, Mozhenkova A, Abebe T, Baiocchi RA. Immunology of EBV-Related Lymphoproliferative Disease in HIV-Positive Individuals. Front Oncol 2020; 10:1723. [PMID: 33102204 PMCID: PMC7556212 DOI: 10.3389/fonc.2020.01723] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 08/03/2020] [Indexed: 12/11/2022] Open
Abstract
Epstein-Bar virus (EBV) can directly cause lymphoproliferative disease (LPD), including AIDS-defining lymphomas such as Burkitt’s lymphoma and other non-Hodgkin lymphomas (NHL), as well as human immunodeficiency virus (HIV)-related Hodgkin lymphoma (HL). The prevalence of EBV in HL and NHL is elevated in HIV-positive individuals compared with the general population. Rates of incidence of AIDS-defining cancers have been declining in HIV-infected individuals since initiation of combination anti-retroviral therapy (cART) use in 1996. However, HIV-infected persons remain at an increased risk of cancers related to infections with oncogenic viruses. Proposed pathogenic mechanisms of HIV-related cancers include decreased immune surveillance, decreased ability to suppress infection-related oncogenic processes and a state of chronic inflammation marked by alteration of the cytokine profile and expanded numbers of cytotoxic T lymphocytes with down-regulated co-stimulatory molecules and increased expression of markers of senescence in the setting of treated HIV infection. Here we discuss the cooperation of EBV-infected B cell- and environment-associated factors that may contribute to EBV-related lymphomagenesis in HIV-infected individuals. Environment-derived lymphomagenic factors include impaired host adaptive and innate immune surveillance, cytokine dysregulation and a pro-inflammatory state observed in the setting of chronic, cART-treated HIV infection. B cell factors include distinctive EBV latency patterns and host protein expression in HIV-associated LPD, as well as B cell-stimulating factors derived from HIV infection. We review the future directions for expanding therapeutic approaches in targeting the viral and immune components of EBV LPD pathogenesis.
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Affiliation(s)
- Polina Shindiapina
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, United States.,Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Elshafa H Ahmed
- Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Anna Mozhenkova
- Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
| | - Tamrat Abebe
- Department of Microbiology, Immunology, and Parasitology, School of Medicine Tikur Anbessa Specialized Hospital, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Robert A Baiocchi
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, United States.,Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH, United States
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28
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Vigano S, Bobisse S, Coukos G, Perreau M, Harari A. Cancer and HIV-1 Infection: Patterns of Chronic Antigen Exposure. Front Immunol 2020; 11:1350. [PMID: 32714330 PMCID: PMC7344140 DOI: 10.3389/fimmu.2020.01350] [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: 02/09/2020] [Accepted: 05/27/2020] [Indexed: 12/14/2022] Open
Abstract
The main role of the human immune system is to eliminate cells presenting foreign antigens and abnormal patterns, while maintaining self-tolerance. However, when facing highly variable pathogens or antigens very similar to self-antigens, this system can fail in completely eliminating the anomalies, leading to the establishment of chronic pathologies. Prototypical examples of immune system defeat are cancer and Human Immunodeficiency Virus-1 (HIV-1) infection. In both conditions, the immune system is persistently exposed to antigens leading to systemic inflammation, lack of generation of long-term memory and exhaustion of effector cells. This triggers a negative feedback loop where effector cells are unable to resolve the pathology and cannot be replaced due to the lack of a pool of undifferentiated, self-renewing memory T cells. In addition, in an attempt to reduce tissue damage due to chronic inflammation, antigen presenting cells and myeloid components of the immune system activate systemic regulatory and tolerogenic programs. Beside these homologies shared between cancer and HIV-1 infection, the immune system can be shaped differently depending on the type and distribution of the eliciting antigens with ultimate consequences at the phenotypic and functional level of immune exhaustion. T cell differentiation, functionality, cytotoxic potential and proliferation reserve, immune-cell polarization, upregulation of negative regulators (immune checkpoint molecules) are indeed directly linked to the quantitative and qualitative differences in priming and recalling conditions. Better understanding of distinct mechanisms and functional consequences underlying disease-specific immune cell dysfunction will contribute to further improve and personalize immunotherapy. In the present review, we describe relevant players of immune cell exhaustion in cancer and HIV-1 infection, and enumerate the best-defined hallmarks of T cell dysfunction. Moreover, we highlight shared and divergent aspects of T cell exhaustion and T cell activation to the best of current knowledge.
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Affiliation(s)
- Selena Vigano
- Ludwig Institute for Cancer Research, University of Lausanne and Department of Oncology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Sara Bobisse
- Ludwig Institute for Cancer Research, University of Lausanne and Department of Oncology, University Hospital of Lausanne, Lausanne, Switzerland
| | - George Coukos
- Ludwig Institute for Cancer Research, University of Lausanne and Department of Oncology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Matthieu Perreau
- Service of Immunology and Allergy, University Hospital of Lausanne, Lausanne, Switzerland
| | - Alexandre Harari
- Ludwig Institute for Cancer Research, University of Lausanne and Department of Oncology, University Hospital of Lausanne, Lausanne, Switzerland
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29
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Ndhlovu ZM, Kazer SW, Nkosi T, Ogunshola F, Muema DM, Anmole G, Swann SA, Moodley A, Dong K, Reddy T, Brockman MA, Shalek AK, Ndung'u T, Walker BD. Augmentation of HIV-specific T cell function by immediate treatment of hyperacute HIV-1 infection. Sci Transl Med 2020; 11:11/493/eaau0528. [PMID: 31118290 DOI: 10.1126/scitranslmed.aau0528] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/31/2018] [Accepted: 03/28/2019] [Indexed: 12/13/2022]
Abstract
Sustained viremia after acute HIV infection is associated with profound CD4+ T cell loss and exhaustion of HIV-specific CD8+ T cell responses. To determine the impact of combination antiretroviral therapy (cART) on these processes, we examined the evolution of immune responses in acutely infected individuals initiating treatment before peak viremia. Immediate treatment of Fiebig stages I and II infection led to a rapid decline in viral load and diminished magnitude of HIV-specific (tetramer+) CD8+ T cell responses compared to untreated donors. There was a strong positive correlation between cumulative viral antigen exposure before full cART-induced suppression and immune responses measured by MHC class I tetramers, IFN-γ ELISPOT, and CD8+ T cell activation. HIV-specific CD8+ T responses of early treated individuals were characterized by increased CD127 and BCL-2 expression, greater in vitro IFN-γ secretion, and enhanced differentiation into effector memory (Tem) cells. Transcriptional analysis of tetramer+ CD8+ T cells from treated persons revealed reduced expression of genes associated with activation and apoptosis, with concurrent up-regulation of prosurvival genes including BCL-2, AXL, and SRC Early treatment also resulted in robust HIV-specific CD4+ T cell responses compared to untreated HIV-infected individuals. Our data show that limiting acute viremia results in enhanced functionality of HIV-specific CD4+ and CD8+ T cells, preserving key antiviral properties of these cells.
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Affiliation(s)
- Zaza M Ndhlovu
- Africa Health Research Institute, 4036 Durban, South Africa. .,Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA.,Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.,HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, 4013 Durban, South Africa
| | - Samuel W Kazer
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science (IMES), MIT, Cambridge, MA 02139, USA.,Department of Chemistry and Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA 02139, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02139, USA
| | - Thandeka Nkosi
- Africa Health Research Institute, 4036 Durban, South Africa.,HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, 4013 Durban, South Africa
| | - Funsho Ogunshola
- Africa Health Research Institute, 4036 Durban, South Africa.,HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, 4013 Durban, South Africa
| | - Daniel M Muema
- Africa Health Research Institute, 4036 Durban, South Africa
| | - Gursev Anmole
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Shayda A Swann
- Faculty of Health Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Amber Moodley
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, 4013 Durban, South Africa
| | - Krista Dong
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
| | - Tarylee Reddy
- South Africa Medical Research Council, 4091 Durban, South Africa
| | - Mark A Brockman
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.,Faculty of Health Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Alex K Shalek
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science (IMES), MIT, Cambridge, MA 02139, USA.,Department of Chemistry and Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA 02139, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02139, USA
| | - Thumbi Ndung'u
- Africa Health Research Institute, 4036 Durban, South Africa.,HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, 4013 Durban, South Africa
| | - Bruce D Walker
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA. .,Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.,HIV Pathogenesis Programme, Doris Duke Medical Research Institute, University of KwaZulu-Natal, 4013 Durban, South Africa.,Institute for Medical Engineering and Science (IMES), MIT, Cambridge, MA 02139, USA.,Broad Institute of MIT and Harvard, Cambridge, MA 02139, USA
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Preclinical Development and Clinical-Scale Manufacturing of HIV Gag-Specific, LentivirusModified CD4 T Cells for HIV Functional Cure. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 17:1048-1060. [PMID: 32462053 PMCID: PMC7240062 DOI: 10.1016/j.omtm.2020.04.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023]
Abstract
Activation, infection, and eventual depletion of human immunodeficiency virus (HIV)-specific cluster of differentiation 4 (CD4) T cells are the crucial pathogenetic events in acquired immunodeficiency syndrome (AIDS). We developed a cell and gene therapy to reconstitute HIV-specific CD4 T cells and prevent their destruction by HIV. Antigen-specific CD4 T cells will provide helper functions to support antiviral cytotoxic T lymphocyte (CTL) function and the production of virus-specific antibodies. However, ex vivo expansion of HIV-specific CD4 T cells is poor and previous gene therapies focused on bulk CD4 T cells without enriching for an antigen-specific subset. We developed a method for manufacturing autologous CD4+ T cell products highly enriched with Gag-specific T cells. Rare Gag-specific CD4 T cells in peripheral blood mononuclear cells (PBMCs) were increased nearly 1,000-fold by stimulating PBMC with Gag peptides, followed by depleting nontarget cells and transducing with lentivirus vector AGT103 to protect against HIV-mediated depletion and inhibit HIV release from latently infected cells. The average percentage of HIV-specific CD4 cells in the final products was 15.13%, and the average yield was 7 × 108 cells. The protocol for clinical-scale manufacturing of HIV-specific and HIV-resistant CD4 T cells is an important step toward effective immunotherapy for HIV disease.
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31
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Pitisuttithum P, Nitayaphan S, Chariyalertsak S, Kaewkungwal J, Dawson P, Dhitavat J, Phonrat B, Akapirat S, Karasavvas N, Wieczorek L, Polonis V, Eller MA, Pegu P, Kim D, Schuetz A, Jongrakthaitae S, Zhou Y, Sinangil F, Phogat S, Diazgranados CA, Tartaglia J, Heger E, Smith K, Michael NL, Excler JL, Robb ML, Kim JH, O'Connell RJ, Vasan S. Late boosting of the RV144 regimen with AIDSVAX B/E and ALVAC-HIV in HIV-uninfected Thai volunteers: a double-blind, randomised controlled trial. Lancet HIV 2020; 7:e238-e248. [PMID: 32035516 PMCID: PMC7247755 DOI: 10.1016/s2352-3018(19)30406-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND The RV144 phase 3 vaccine trial in Thailand demonstrated that ALVAC-HIV (vCP1521) and AIDSVAX B/E administration over 6 months resulted in a 31% efficacy in preventing HIV acquisition. In this trial, we assessed the immunological effect of an additional vaccine boost to the RV144 regimen at varying intervals between the priming vaccine series and the boost. METHODS RV306 is a double-blind, placebo-controlled, randomised clinical trial done at three clinical sites in Thailand. Eligible volunteers were HIV-uninfected individuals aged 20-40 years who were at low risk for HIV infection and in good health. A randomisation schedule was centrally generated with fixed sized strata for Research Institute for Health Sciences Chiang Mai and combined Bangkok clinics. Participants were randomly assigned to one of five groups and then further randomly assigned to either vaccine or placebo. All participants received the primary RV144 vaccine series at months 0, 1, 3, and 6. Group 1 received no additional boost, group 2 received additional AIDSVAX B/E and ALVAC-HIV (vCP1521) or placebo at month 12, group 3 received AIDSVAX B/E alone or placebo at month 12, group 4a received AIDSVAX B/E and ALVAC-HIV or placebo at month 15, and group 4b received AIDSVAX B/E and ALVAC-HIV or placebo at month 18. Primary outcomes were safety and tolerability of these vaccination regimens and cellular and humoral immune responses compared between the RV144 series alone and regimens with late boosts at different timepoints. Safety and tolerability outcomes were assessed by evaluating local and systemic reactogenicity and adverse events in all participants. This trial is registered at ClinicalTrials.gov (NCT01931358); clinical follow-up is now complete. FINDINGS Between Oct 28, 2013, and April 29, 2014, 367 participants were enrolled, of whom 27 were assigned active vaccination in group 1, 102 in group 2, 101 in group 3, 52 in group 4a, 51 in group 4b, and 34 combined placebo across all the groups. No vaccine-related serious adverse events were recorded. Occurrence and severity of local and systemic reactogenicity were similar across active groups. Groups with late boosts (groups 2, 3, 4a, and 4b) had increased peak plasma IgG-binding antibody levels against gp70 V1V2 relative to group 1 vaccine recipients with no late boost (gp70 V1V2 92TH023 adjusted p<0·02 for each; gp70 V1V2 CaseA2 adjusted p<0·0001 for each). Boosting at month 12 (groups 2 and 3) did not increase gp120 responses compared with the peak responses after the RV144 priming regimen at month 6; however, boosting at month 15 (group 4a) improved responses to gp120 A244gD- D11 (p=0·0003), and boosting at month 18 (group 4b) improved responses to both gp120 A244gD- D11 (p<0·0001) and gp120 MNgD- D11 (p=0·0016). Plasma IgG responses were significantly lower among vaccine recipients boosted at month 12 (pooled groups 2 + 3) than at month 15 (group 4a; adjusted p<0·0001 for each, except for gp70 V1V2 CaseA2, p=0·0142) and at month 18 (group 4b; all adjusted p<0·001). Boosting at month 18 versus month 15 resulted in a significantly higher plasma IgG response to gp120 antigens (all adjusted p<0·01) but not gp70 V1V2 antigens. CD4 functionality and polyfunctionality scores after stimulation with HIV-1 Env peptides (92TH023) increased with delayed boosting. Groups with late boosts had increased functionality and polyfunctionality scores relative to vaccine recipients with no late boost (all adjusted p<0·05, except for the polyfunctionality score in group 1 vs group 4b, p<0·01). INTERPRETATION Taken together, these results suggest that additional boosting of the RV144 regimen with longer intervals between the primary vaccination series and late boost improved immune responses and might improve the efficacy of preventing HIV acquisition. FUNDING US National Institute of Allergy and Infectious Diseases and US Department of the Army.
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Affiliation(s)
- Punnee Pitisuttithum
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | - Suwat Chariyalertsak
- Research Institute for Health Sciences and Faculty of Public Health, Chiang Mai University, Chiang Mai, Thailand
| | - Jaranit Kaewkungwal
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | - Jittima Dhitavat
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Benjaluck Phonrat
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Siriwat Akapirat
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Nicos Karasavvas
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Lindsay Wieczorek
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Victoria Polonis
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Michael A Eller
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Poonam Pegu
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Dohoon Kim
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Alexandra Schuetz
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | | | | | - Faruk Sinangil
- Global Solutions for Infectious Diseases, South San Francisco, CA, USA
| | - Sanjay Phogat
- Sanofi Pasteur, Swiftwater, PA, USA; GlaxoSmithKline, Siena, Italy
| | | | | | - Elizabeth Heger
- US Army Medical Materiel Development Activity, Fort Detrick, MD, USA
| | - Kirsten Smith
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | - Nelson L Michael
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Jean-Louis Excler
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA; International Vaccine Institute, Seoul, South Korea
| | - Merlin L Robb
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA
| | - Jerome H Kim
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; International Vaccine Institute, Seoul, South Korea
| | - Robert J O'Connell
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - Sandhya Vasan
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Henry M Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA.
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32
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Combination anti-HIV-1 antibody therapy is associated with increased virus-specific T cell immunity. Nat Med 2020; 26:222-227. [PMID: 32015556 PMCID: PMC7018622 DOI: 10.1038/s41591-019-0747-1] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 12/19/2019] [Indexed: 02/07/2023]
Abstract
Combination antiretroviral therapy (ART) is highly effective in controlling human immunodeficiency virus (HIV)-1 but requires lifelong medication due to the existence of a latent viral reservoir1,2. Potent broadly neutralizing antibodies (bNAbs) represent a potential alternative or adjuvant to ART. In addition to suppressing viremia, bNAbs may have T cell immunomodulatory effects as seen for other forms of immunotherapy3. However, this has not been established in individuals who are infected with HIV-1. Here, we document increased HIV-1 Gag-specific CD8+ T cell responses in the peripheral blood of all nine study participants who were infected with HIV-1 with suppressed blood viremia, while receiving bNAb therapy during ART interruption4. Increased CD4+ T cell responses were detected in eight individuals. The increased T cell responses were due both to newly detectable reactivity to HIV-1 Gag epitopes and the expansion of pre-existing measurable responses. These data demonstrate that bNAb therapy during ART interruption is associated with enhanced HIV-1-specific T cell responses. Whether these augmented T cell responses can contribute to bNAb-mediated viral control remains to be determined. T cell responses specific for HIV-1 Gag peptides increased in HIV-positive recipients of two broadly neutralizing antibodies with prolonged suppression of blood viremia during antiretroviral treatment interruption.
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33
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Borthwick N, Silva-Arrieta S, Llano A, Takiguchi M, Brander C, Hanke T. Novel Nested Peptide Epitopes Recognized by CD4 + T Cells Induced by HIV-1 Conserved-Region Vaccines. Vaccines (Basel) 2020; 8:E28. [PMID: 31963212 PMCID: PMC7157676 DOI: 10.3390/vaccines8010028] [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: 12/16/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 11/29/2022] Open
Abstract
CD4+ T-cell responses play an important role in the immune control of the human immunodeficiency virus type 1 (HIV-1) infection and as such should be efficiently induced by vaccination. It follows that definition of HIV-1-derived peptides recognized by CD4+ T cells in association with HLA class II molecules will guide vaccine development. Here, we have characterized the fine specificity of CD4+ T cells elicited in human recipients of a candidate vaccine delivering conserved regions of HIV-1 proteins designated HIVconsv. The majority of these 19 most immunogenic regions contained novel epitopes, that is, epitopes not listed in the Los Alamos National Laboratory HIV Sequence Database, which were able in vitro to stimulate vaccinees' CD4+ T cells to proliferate and produce interferon-γ and tumor necrosis factor-α. Accumulation of HLA class II epitopes will eventually accelerate development of HIV-1 prophylactic and therapeutic vaccines.
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Affiliation(s)
| | - Sandra Silva-Arrieta
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Barcelona, Spain; (S.S.-A.); (A.L.); (C.B.)
| | - Anuska Llano
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Barcelona, Spain; (S.S.-A.); (A.L.); (C.B.)
| | - Masafumi Takiguchi
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 860-0811, Japan;
| | - Christian Brander
- IrsiCaixa AIDS Research Institute-HIVACAT, Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Barcelona, Spain; (S.S.-A.); (A.L.); (C.B.)
- Faculty of Medicine, Universitat de Vic-Central de Catalunya (UVic-UCC), 08500 Vic, Spain
- Institució Catalana de Recerca I Estudis Avançats (ICREA), 08010 Barcelona, Spain
| | - Tomáš Hanke
- The Jenner Institute, University of Oxford, Oxford OX3 7DQ, UK;
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto 860-0811, Japan;
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Liu R, Simonetti FR, Ho YC. The forces driving clonal expansion of the HIV-1 latent reservoir. Virol J 2020; 17:4. [PMID: 31910871 PMCID: PMC6947923 DOI: 10.1186/s12985-019-1276-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 12/23/2019] [Indexed: 12/12/2022] Open
Abstract
Despite antiretroviral therapy (ART) which halts HIV-1 replication and reduces plasma viral load to clinically undetectable levels, viral rebound inevitably occurs once ART is interrupted. HIV-1-infected cells can undergo clonal expansion, and these clonally expanded cells increase over time. Over 50% of latent reservoirs are maintained through clonal expansion. The clonally expanding HIV-1-infected cells, both in the blood and in the lymphoid tissues, contribute to viral rebound. The major drivers of clonal expansion of HIV-1-infected cells include antigen-driven proliferation, homeostatic proliferation and HIV-1 integration site-dependent proliferation. Here, we reviewed how viral, immunologic and genomic factors contribute to clonal expansion of HIV-1-infected cells, and how clonal expansion shapes the HIV-1 latent reservoir. Antigen-specific CD4+ T cells specific for different pathogens have different clonal expansion dynamics, depending on antigen exposure, cytokine profiles and exhaustion phenotypes. Homeostatic proliferation replenishes the HIV-1 latent reservoir without inducing viral expression and immune clearance. Integration site-dependent proliferation, a mechanism also deployed by other retroviruses, leads to slow but steady increase of HIV-1-infected cells harboring HIV-1 proviruses integrated in the same orientation at specific sites of certain cancer-related genes. Targeting clonally expanding HIV-1 latent reservoir without disrupting CD4+ T cell function is a top priority for HIV-1 eradication.
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Affiliation(s)
- Runxia Liu
- Department of Microbial Pathogenesis, Yale University, New Haven, CT, 06519, USA
| | | | - Ya-Chi Ho
- Department of Microbial Pathogenesis, Yale University, New Haven, CT, 06519, USA.
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35
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Zheltkova V, Argilaguet J, Peligero C, Bocharov G, Meyerhans A. Prediction of PD-L1 inhibition effects for HIV-infected individuals. PLoS Comput Biol 2019; 15:e1007401. [PMID: 31693657 PMCID: PMC6834253 DOI: 10.1371/journal.pcbi.1007401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 09/16/2019] [Indexed: 02/07/2023] Open
Abstract
The novel therapies with immune checkpoint inhibitors hold great promises for patients with chronic virus infections and cancers. This is based mainly on the partial reversal of the exhausted phenotype of antigen-specific cytotoxic CD8 T cells (CTL). Recently, we have shown that the restoration of HIV-specific T cell function depends on the HIV infection stage of an infected individual. Here we aimed to answer two fundamental questions: (i) Can one estimate growth parameters for the HIV-specific proliferative responsiveness upon PD-L1 blockade ex vivo? (ii) Can one use these parameter estimates to predict clinical benefit for HIV-infected individuals displaying diverse infection phenotypes? To answer these questions, we first analyzed HIV-1 Gag-specific CD8 T cell proliferation by time-resolved CFSE assays and estimated the effect of PD-L1 blockade on division and death rates, and specific precursor frequencies. These values were then incorporated into a model for CTL-mediated HIV control and the effects on CTL frequencies, viral loads and CD4 T cell counts were predicted for different infection phenotypes. The biggest absolute increase in CD4 T cell counts was in the group of slow progressors while the strongest reduction in virus loads was observed in progressor patients. These results suggest a significant clinical benefit only for a subgroup of HIV-infected individuals. However, as PD1 is a marker of lymphocyte activation and expressed on several lymphocyte subsets including also CD4 T cells and B cells, we subsequently examined the multiple effects of anti-PD-L1 blockade beyond those on CD8 T cells. This extended model then predicts that the net effect on HIV load and CD4 T cell number depends on the interplay between positive and negative effects of lymphocyte subset activation. For a physiologically relevant range of affected model parameters, PD-L1 blockade is likely to be overall beneficial for HIV-infected individuals.
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Affiliation(s)
- Valerya Zheltkova
- Faculty of Computational Mathematics and Cybernetics, Lomonosov Moscow State University, Moscow, Russia
- Marchuk Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, Russia
| | - Jordi Argilaguet
- Infection Biology Laboratory, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Cristina Peligero
- Infection Biology Laboratory, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Gennady Bocharov
- Marchuk Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, Russia
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - Andreas Meyerhans
- Infection Biology Laboratory, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, Barcelona, Spain
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36
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Hanke T. Aiming for protective T-cell responses: a focus on the first generation conserved-region HIVconsv vaccines in preventive and therapeutic clinical trials. Expert Rev Vaccines 2019; 18:1029-1041. [PMID: 31613649 DOI: 10.1080/14760584.2019.1675518] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Introduction: Despite life-saving antiretroviral drugs, an effective HIV-1 vaccine is the best solution and likely a necessary component of any strategy for halting the AIDS epidemic. The currently prevailing aim is to pursue antibody-mediated vaccine protection. With ample evidence for the ability of T cells to control HIV-1 replication, their protective potential should be also harnessed by vaccination. The challenge is to elicit not just any, but protective T cells.Areas covered: This article reviews the clinical experience with the first-generation conserved-region immunogen HIVconsv delivered by combinations of plasmid DNA, simian adenovirus, and poxvirus MVA. The aim of our strategy is to induce strong and broad T cells targeting functionally important parts of HIV-1 proteins common to global variants. These vaccines were tested in eight phase 1/2 preventive and therapeutic clinical trials in Europe and Africa, and induced high frequencies of broadly specific CD8+ T cells capable of in vitro inhibition of four major HIV-1 clades A, B, C and D, and in combination with latency-reactivating agent provided a signal of drug-free virological control in early treated patients.Expert opinion: A number of critical T-cell traits have to come together at the same time to achieve control over HIV-1.
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Affiliation(s)
- Tomáš Hanke
- The Jenner Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,International Research Center for Medical Sciences, Kumamoto University, Kumamoto, Japan
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37
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Patel S, Hanajiri R, Grant M, Saunders D, Van Pelt S, Keller M, Hanley PJ, Simon G, Nixon DF, Hardy D, Jones RB, Bollard CM. HIV-Specific T Cells Can Be Generated against Non-escaped T Cell Epitopes with a GMP-Compliant Manufacturing Platform. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2019; 16:11-20. [PMID: 31720305 PMCID: PMC6838524 DOI: 10.1016/j.omtm.2019.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 10/03/2019] [Indexed: 11/01/2022]
Abstract
Although anti-retroviral therapy (ART) is successful in suppressing HIV-1 replication, HIV latently infected reservoirs are not eliminated, representing a major hurdle in efforts to eradicate the virus. Current strategies to eradicate HIV involve two steps: (1) the reactivation of latently infected cells with latency reversing agents (LRAs) to expose persisting HIV, and (2) the elimination of these cells with immune effectors while continuing ART to prevent reinfection. HIV-specific T cells (HSTs) can kill reactivated HIV-infected cells and are currently being evaluated in early-stage immunotherapy trials. HIV can mutate sequences in T cell epitopes and evade T cell-mediated killing of HIV-infected cells. However, by directing T cells to target multiple conserved, non-escaped HIV epitopes, the opportunity for viral escape can be reduced. Using a good manufacturing practice (GMP)-compliant platform, we manufactured HSTs against non-escape epitope targets (HST-NEETs) from HIV+ and HIV-seronegative donors. HST-NEETs expanded to clinically relevant numbers, lysed autologous antigen-pulsed targets, and showed a polyfunctional pro-inflammatory cytokine response. Notably, HST-NEETs recognized multiple conserved, non-escaped HIV epitopes and their common variants. We propose that HST-NEETs could be used to eliminate reactivated virus from latently infected cells in HIV+ individuals following LRA treatment. Additionally, HST-NEETs derived from HIV-negative individuals could be used post-transplant for HIV+ individuals with hematologic malignancies to augment anti-viral immunity and destroy residual infected cells.
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Affiliation(s)
- Shabnum Patel
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA.,GW Cancer Center, Department of Pediatrics, The George Washington University, Washington, DC 20037, USA
| | - Ryo Hanajiri
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA
| | - Melanie Grant
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA
| | - Devin Saunders
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA
| | - Stacey Van Pelt
- GW Cancer Center, Department of Pediatrics, The George Washington University, Washington, DC 20037, USA
| | - Michael Keller
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA
| | - Patrick J Hanley
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA
| | - Gary Simon
- Department of Medicine, The George Washington University, Washington, DC 20037, USA
| | - Douglas F Nixon
- Department of Medicine, Division of Infectious Diseases, Weill Cornell Medicine, New York, NY 10065, USA
| | | | - R Brad Jones
- Department of Medicine, Division of Infectious Diseases, Weill Cornell Medicine, New York, NY 10065, USA
| | - Catherine M Bollard
- Center for Cancer and Immunology Research, Children's National Health System, Washington, DC 20010, USA.,GW Cancer Center, Department of Pediatrics, The George Washington University, Washington, DC 20037, USA
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38
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Mylvaganam G, Yanez AG, Maus M, Walker BD. Toward T Cell-Mediated Control or Elimination of HIV Reservoirs: Lessons From Cancer Immunology. Front Immunol 2019; 10:2109. [PMID: 31552045 PMCID: PMC6746828 DOI: 10.3389/fimmu.2019.02109] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 08/21/2019] [Indexed: 12/16/2022] Open
Abstract
As the AIDS epidemic unfolded, the appearance of opportunistic infections in at-risk persons provided clues to the underlying problem: a dramatic defect in cell-mediated immunity associated with infection and depletion of CD4+ T lymphocytes. Moreover, the emergence of HIV-associated malignancies in these same individuals was a clear indication of the significant role effective cellular immunity plays in combating cancers. As research in the HIV field progressed, advances included the first demonstration of the role of PD-1 in human T cell exhaustion, and the development of gene-modified T cell therapies, including chimeric antigen receptor (CAR) T cells. In the intervening years, the oncology field has capitalized on these advances, effectively mobilizing the cellular immune response to achieve immune-mediated remission or cure of previously intractable cancers. Although similar therapeutic advances have not yet been achieved in the HIV field, spontaneous CD8+ T cell mediated remission or functional cure of HIV infection does occur in very small subset of individuals in the absence of anti-retroviral therapy (ART). This has many similarities to the CD8+ T cell mediated functional control or elimination of cancers, and indicates that immunotherapy for HIV is a rational goal. In HIV infection, one major barrier to successful immunotherapy is the small, persistent population of infected CD4+ T cells, the viral reservoir, which evades pharmacological and immune-mediated clearance, and is largely maintained in secondary lymphoid tissues at sites where CD8+ T cells have limited access and/or function. The reservoir-enriched lymphoid microenvironment bears a striking resemblance to the tumor microenvironment of many solid tumors–namely high levels of anti-inflammatory cytokines, expression of co-inhibitory receptors, and physical exclusion of immune effector cells. Here, we review the parallels between CD8+ T cell-mediated immune control of HIV and cancer, and how advances in cancer immunotherapy may provide insights to direct the development of effective HIV cure strategies. Specifically, understanding the impact of the tissue microenvironment on T cell function and development of CAR T cells and therapeutic vaccines deserve robust attention on the path toward a CD8+ T cell mediated cure of HIV infection.
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Affiliation(s)
- Geetha Mylvaganam
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, United States
| | - Adrienne G Yanez
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, United States
| | - Marcela Maus
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, United States.,MGH Cancer Center, Boston, MA, United States
| | - Bruce D Walker
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, United States.,Howard Hughes Medical Institute, Chevy Chase, MD, United States.,Institute for Medical Engineering and Sciences, MIT, Cambridge, MA, United States
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39
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Surenaud M, Montes M, Lindestam Arlehamn CS, Sette A, Banchereau J, Palucka K, Lelièvre JD, Lacabaratz C, Lévy Y. Anti-HIV potency of T-cell responses elicited by dendritic cell therapeutic vaccination. PLoS Pathog 2019; 15:e1008011. [PMID: 31498845 PMCID: PMC6733439 DOI: 10.1371/journal.ppat.1008011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/30/2019] [Indexed: 12/12/2022] Open
Abstract
Identification and characterization of CD8+ and CD4+ T-cell epitopes elicited by HIV therapeutic vaccination is key for elucidating the nature of protective cellular responses and mechanism of the immune evasion of HIV. Here, we report the characterization of HIV-specific T-cell responses in cART (combination antiretroviral therapy) treated HIV-1 infected patients after vaccination with ex vivo-generated IFNα Dendritic Cells (DCs) loaded with LIPO-5 (HIV-1 Nef 66-97, Nef 116-145, Gag 17-35, Gag 253-284 and Pol 325-355 lipopeptides). Vaccination induced and/or expanded HIV-specific CD8+ T cells producing IFNγ, perforin, granzyme A and granzyme B, and also CD4+ T cells secreting IFNγ, IL-2 and IL-13. These responses were directed against dominant and subdominant epitopes representing all vaccine regions; Gag, Pol and Nef. Interestingly, IL-2 and IL-13 produced by CD4+ T cells were negatively correlated with the peak of viral replication following analytic treatment interruption (ATI). Epitope mapping confirmed that vaccination elicited responses against predicted T-cell epitopes, but also allowed to identify a set of 8 new HIV-1 HLA-DR-restricted CD4+ T-cell epitopes. These results may help to better design future DC therapeutic vaccines and underscore the role of vaccine-elicited CD4+ T-cell responses to achieve control of HIV replication.
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Affiliation(s)
- Mathieu Surenaud
- Vaccine Research Institute, INSERM U955—Université Paris-Est Créteil, Créteil, France
| | - Monica Montes
- Baylor Institute for Immunology Research, Center for Human Vaccines, Dallas TX, United States of America
| | | | - Alessandro Sette
- La Jolla Institute for Immunology, Department of Vaccine Discovery, La Jolla, California, United States of America
- University of California San Diego, Department of Medicine, La Jolla, California, United States of America
| | - Jacques Banchereau
- Baylor Institute for Immunology Research, Center for Human Vaccines, Dallas TX, United States of America
| | - Karolina Palucka
- Baylor Institute for Immunology Research, Center for Human Vaccines, Dallas TX, United States of America
| | - Jean-Daniel Lelièvre
- Vaccine Research Institute, INSERM U955—Université Paris-Est Créteil, Créteil, France
- Assistance Publique-Hôpitaux de Paris, Groupe Henri-Mondor Albert-Chenevier, Service d’Immunologie Clinique, Créteil, France
| | - Christine Lacabaratz
- Vaccine Research Institute, INSERM U955—Université Paris-Est Créteil, Créteil, France
| | - Yves Lévy
- Vaccine Research Institute, INSERM U955—Université Paris-Est Créteil, Créteil, France
- Assistance Publique-Hôpitaux de Paris, Groupe Henri-Mondor Albert-Chenevier, Service d’Immunologie Clinique, Créteil, France
- * E-mail:
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40
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Sanchez-Martinez A, Perdomo-Celis F, Acevedo-Saenz L, Rugeles MT, Velilla PA. Cytotoxic CD4 + T-cells during HIV infection: Targets or weapons? J Clin Virol 2019; 119:17-23. [PMID: 31445411 DOI: 10.1016/j.jcv.2019.08.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/16/2019] [Accepted: 08/13/2019] [Indexed: 12/23/2022]
Abstract
Classically, CD4+ T-cells have been referred as cytokine-producing cells and important players in immune responses by providing soluble factors that potentiate several effector immune functions. However, it is now evident that CD4+ T-cells can also elaborate cytotoxic responses, inducing apoptosis of target cells. Cytotoxic CD4+ T cells (CD4+ CTLs), exhibit cytolytic functions that resemble those of CD8+ T-cells; in fact, there is evidence suggesting that they may have a role in the control of viral infections. In this article, we discuss the role of CD4+ CTLs during HIV infection, where CD4+ CTLs have been associated with viral control and slow disease progression. In addition, we address the implication of CD4+ CTLs in the context of antiretroviral therapy and the partial reconstitution of CD8+ T-cells effector function.
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Affiliation(s)
| | - Federico Perdomo-Celis
- Grupo Inmunovirologia, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia
| | - Liliana Acevedo-Saenz
- Grupo Inmunovirologia, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia; Grupo de Investigación Enfermería-CES, Facultad de Enfermería, Universidad CES, Medellin, Colombia
| | - Maria T Rugeles
- Grupo Inmunovirologia, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia
| | - Paula A Velilla
- Grupo Inmunovirologia, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia.
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41
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Lee GQ, Reddy K, Einkauf KB, Gounder K, Chevalier JM, Dong KL, Walker BD, Yu XG, Ndung'u T, Lichterfeld M. HIV-1 DNA sequence diversity and evolution during acute subtype C infection. Nat Commun 2019; 10:2737. [PMID: 31227699 PMCID: PMC6588551 DOI: 10.1038/s41467-019-10659-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 05/24/2019] [Indexed: 01/02/2023] Open
Abstract
Little is known about the genotypic make-up of HIV-1 DNA genomes during the earliest stages of HIV-1 infection. Here, we use near-full-length, single genome next-generation sequencing to longitudinally genotype and quantify subtype C HIV-1 DNA in four women identified during acute HIV-1 infection in Durban, South Africa, through twice-weekly screening of high-risk participants. In contrast to chronically HIV-1-infected patients, we found that at the earliest phases of infection in these four participants, the majority of viral DNA genomes are intact, lack APOBEC-3G/F-associated hypermutations, have limited genome truncations, and over one year show little indication of cytotoxic T cell-driven immune selections. Viral sequence divergence during acute infection is predominantly fueled by single-base substitutions and is limited by treatment initiation during the earliest stages of disease. Our observations provide rare longitudinal insights of HIV-1 DNA sequence profiles during the first year of infection to inform future HIV cure research.
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Affiliation(s)
- Guinevere Q Lee
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
- Brigham and Women's Hospital, Boston, 02115, MA, USA
- Harvard Medical School, Boston, MA, 02115, USA
| | - Kavidha Reddy
- HIV Pathogenesis Programme, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, 4001, South Africa
- Africa Health Research Institute, Durban, 4001, South Africa
| | - Kevin B Einkauf
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
- Brigham and Women's Hospital, Boston, 02115, MA, USA
| | - Kamini Gounder
- HIV Pathogenesis Programme, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, 4001, South Africa
- Africa Health Research Institute, Durban, 4001, South Africa
| | | | - Krista L Dong
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
- Harvard Medical School, Boston, MA, 02115, USA
| | - Bruce D Walker
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
- Brigham and Women's Hospital, Boston, 02115, MA, USA
- Harvard Medical School, Boston, MA, 02115, USA
- HIV Pathogenesis Programme, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, 4001, South Africa
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, 20815, USA
| | - Xu G Yu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
- Brigham and Women's Hospital, Boston, 02115, MA, USA
- Harvard Medical School, Boston, MA, 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Thumbi Ndung'u
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
- HIV Pathogenesis Programme, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, 4001, South Africa
- Africa Health Research Institute, Durban, 4001, South Africa
- Max Planck Institute for Infection Biology, 10117, Berlin, Germany
| | - Mathias Lichterfeld
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA.
- Brigham and Women's Hospital, Boston, 02115, MA, USA.
- Harvard Medical School, Boston, MA, 02115, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA.
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42
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Zaunders J, Dyer WB, Churchill M, Munier CML, Cunningham PH, Suzuki K, McBride K, Hey-Nguyen W, Koelsch K, Wang B, Hiener B, Palmer S, Gorry PR, Bailey M, Xu Y, Danta M, Seddiki N, Cooper DA, Saksena NK, Sullivan JS, Riminton S, Learmont J, Kelleher AD. Possible clearance of transfusion-acquired nef/LTR-deleted attenuated HIV-1 infection by an elite controller with CCR5 Δ32 heterozygous and HLA-B57 genotype. J Virus Erad 2019. [DOI: 10.1016/s2055-6640(20)30056-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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43
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SAHA SHUBHANKAR, ROY PRITIKUMAR, SMITH? ROBERT. MODELING MONOCYTE-DERIVED DENDRITIC CELLS AS A THERAPEUTIC VACCINE AGAINST HIV. J BIOL SYST 2019. [DOI: 10.1142/s0218339018500262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Successful immunologic control of HIV infection can be achieved in long-term non-progressors or HIV-1 controllers. Dendritic cells (DCs) are required for specific antigen presentation to naïve T lymphocytes and for antiviral, type I interferon secretion. To understand this mechanism, we develop a mathematical model that describes the role of direct presentation (replicating virus-infected DCs or other [Formula: see text] T cells directly) and cross presentation (DCs obtain antigen processed in other infected cells such as [Formula: see text] T lymphocytes) during HIV-1 infection. We find equilibria and determine stability in the case of no vaccination, and then, when vaccination is taken, we determine analytical thresholds for the strength and frequency of the vaccine to ensure the disease-free equilibrium remains stable. Our theoretical results suggest that the restoration of DC numbers may be predictive of immune restoration and may be a goal for immunotherapy to enhance viral control in a larger proportion of patients.
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Affiliation(s)
- SHUBHANKAR SAHA
- Centre for Mathematical Biology and Ecology, Department of Mathematics, Jadavpur University, Kolkata 700032, India
| | - PRITI KUMAR ROY
- Centre for Mathematical Biology and Ecology, Department of Mathematics, Jadavpur University, Kolkata 700032, India
| | - ROBERT SMITH?
- Department of Mathematics and Faculty of Medicine, The University of Ottawa, 585 King Edward Avenue, Ottawa, ON K1N 6N5, Canada
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44
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Dominguez-Molina B, Ferrando-Martinez S, Tarancon-Diez L, Hernandez-Quero J, Genebat M, Vidal F, Muñoz-Fernandez MA, Leal M, Koup R, Ruiz-Mateos E. Immune Correlates of Natural HIV Elite Control and Simultaneous HCV Clearance-Supercontrollers. Front Immunol 2018; 9:2897. [PMID: 30619267 PMCID: PMC6295470 DOI: 10.3389/fimmu.2018.02897] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/26/2018] [Indexed: 12/14/2022] Open
Abstract
HIV-elite controllers are a minority group of HIV-infected patients with the ability to maintain undetectable HIV viremia for long time periods without antiretroviral treatment. A small group of HIV-controllers are also able to spontaneously clear the hepatitis C virus (HCV) whom we can refer to as "supercontrollers." There are no studies that explore immune correlates looking for the mechanisms implicated in this extraordinary phenomenon. Herein, we have analyzed HCV- and HIV-specific T-cell responses, as well as T, dendritic and NK cell phenotypes. The higher HCV-specific CD4 T-cell polyfunctionality, together with a low activation and exhaustion T-cell phenotype was found in supercontrollers. In addition, the frequency of CD8 CD161high T-cells was related with HIV- and HCV-specific T-cells polyfunctionality. Interesting features regarding NK and plasmacytoid dendritic cells (pDCs) were found. The study of the supercontroller's immune response, subjects that spontaneously controls both chronic viral infections, could provide further insights into virus-specific responses needed to develop immunotherapeutic strategies in the setting of HIV cure or HCV vaccination.
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Affiliation(s)
- Beatriz Dominguez-Molina
- Clinic Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital, Seville, Spain
- Laboratory of Immunovirology, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital/CSIC/University of Seville, Seville, Spain
| | - Sara Ferrando-Martinez
- Immunology Laboratory, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Laura Tarancon-Diez
- Clinic Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital, Seville, Spain
- Laboratory of Immunovirology, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital/CSIC/University of Seville, Seville, Spain
| | | | - Miguel Genebat
- Laboratory of Immunovirology, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital/CSIC/University of Seville, Seville, Spain
| | - Francisco Vidal
- Hospital Universitari Joan XXIII, IISPV, Universitat Rovira i Virgili, Tarragona, Spain
| | - Mª Angeles Muñoz-Fernandez
- Sección Inmunología, Laboratory InmunoBiología Molecular, Hospital General Universitario “Gregorio Marañón”, Madrid, Spain
- Instituto de Investigación Sanitaria del Gregorio Marañón, Madrid, Spain
| | - Manuel Leal
- Laboratory of Immunovirology, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital/CSIC/University of Seville, Seville, Spain
- Servicio de Medicina Interna, Hospital Viamed, Santa Ángela de la Cruz, Seville, Spain
| | - Richard Koup
- Immunology Laboratory, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Ezequiel Ruiz-Mateos
- Clinic Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville, IBiS, Virgen del Rocío University Hospital, Seville, Spain
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45
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Malm M, Vesikari T, Blazevic V. Identification of a First Human Norovirus CD8 + T Cell Epitope Restricted to HLA-A *0201 Allele. Front Immunol 2018; 9:2782. [PMID: 30542352 PMCID: PMC6277766 DOI: 10.3389/fimmu.2018.02782] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/12/2018] [Indexed: 01/04/2023] Open
Abstract
Norovirus (NoV) causes a substantial global burden of acute gastroenteritis in all age groups and the development of NoV vaccine is a high priority. There are still gaps in understanding of protective NoV-specific immunity. Antibody mediated immune responses have been widely studied, but in contrast, the research on NoV-specific human T cell-mediated immunity is very limited. We have recently reported NoV capsid VP1-specific 18-mer peptide (134SPSQVTMFPHIIVDVRQL151) to induce strong CD8+ T cell immune responses in healthy adult donors. This work extends to identify the precise NoV T cell epitope and the restricting human leucocyte antigen (HLA). Pentamer technology was used to detect HLA-A*0201-restricted T cell-mediated responses to 10-mer peptide 139TMFPHIIVDV148 of four healthy adult blood donors. Immunogenicity of the 10-mer epitope was confirmed by ELISPOT IFN-γ and intracellular cytokine staining (ICS) on flow cytometry. A population of CD3+CD8+ T lymphocytes binding to HLA-A*0201/TMFPHIIVDV pentamers was identified in two HLA-A*0201-positive donors. Recognition of the 10-mer epitope by T cells resulted in a strong IFN-γ secretion as shown by ELISPOT assay. In addition, ICS confirmed that high proportion (31 and 59%) of the TMFPHIIVDV epitope-responsive CD3+CD8+ T cells in the two donors had multifunctional phenotype, simultaneously producing IFN-γ, IL-2 and TNF-α cytokines. In the present study novel human NoV HLA-A*0201-restricted minimal 10-mer epitope 139TMFPHIIVDV148 in the capsid VP1 was identified. The HLA-peptide pentamer staining of T cells from healthy donor PBMCs and cytokine responses in ex-vivo ELISPOT and ICS assays suggest that this epitope is recognized during NoV infection and activates memory phenotype of the epitope-specific multifunctional CD8+ T cells. The importance of this epitope in protection from NoV infection remains to be determined.
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Affiliation(s)
- Maria Malm
- Faculty of Medicine and Life Sciences, Vaccine Research Center, University of Tampere, Tampere, Finland
| | - Timo Vesikari
- Faculty of Medicine and Life Sciences, Vaccine Research Center, University of Tampere, Tampere, Finland
| | - Vesna Blazevic
- Faculty of Medicine and Life Sciences, Vaccine Research Center, University of Tampere, Tampere, Finland
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46
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Cheng L, Wang Q, Li G, Banga R, Ma J, Yu H, Yasui F, Zhang Z, Pantaleo G, Perreau M, Zurawski S, Zurawski G, Levy Y, Su L. TLR3 agonist and CD40-targeting vaccination induces immune responses and reduces HIV-1 reservoirs. J Clin Invest 2018; 128:4387-4396. [PMID: 30148455 DOI: 10.1172/jci99005] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 07/09/2018] [Indexed: 12/20/2022] Open
Abstract
Activation of HIV-1 reservoirs and induction of anti-HIV-1 T cells are critical to control HIV-1 rebound after combined antiretroviral therapy (cART). Here we evaluated in humanized mice (hu-mice) with persistent HIV-1 infection the therapeutic effect of TLR3 agonist and a CD40-targeting HIV-1 vaccine, which consists of a string of 5 highly conserved CD4+ and CD8+ T cell epitope-rich regions of HIV-1 Gag, Nef, and Pol fused to the C-terminus of a recombinant anti-human CD40 antibody (αCD40.HIV5pep). We show that αCD40.HIV5pep vaccination coadministered with poly(I:C) adjuvant induced HIV-1-specific human CD8+ and CD4+ T cell responses in hu-mice. Interestingly, poly(I:C) treatment also reactivated HIV-1 reservoirs. When administrated in therapeutic settings in HIV-1-infected hu-mice under effective cART, αCD40.HIV5pep with poly(I:C) vaccination induced HIV-1-specific CD8+ T cells and reduced the level of cell-associated HIV-1 DNA (or HIV-1 reservoirs) in lymphoid tissues. Most strikingly, the vaccination significantly delayed HIV-1 rebound after cART cessation. In summary, the αCD40.HIV5pep with poly(I:C) vaccination approach both activates replication of HIV-1 reservoirs and enhances the anti-HIV-1 T cell response, leading to a reduced level of cell-associated HIV-1 DNA or reservoirs. Our proof-of-concept study has significant implication for the development of CD40-targeting HIV-1 vaccine to enhance anti-HIV-1 immunity and reduce HIV-1 reservoirs in patients with suppressive cART.
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Affiliation(s)
- Liang Cheng
- Lineberger Comprehensive Cancer Center, and.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Qi Wang
- Lineberger Comprehensive Cancer Center, and
| | | | - Riddhima Banga
- Service of Immunology and Allergy and.,Swiss Vaccine Research Institute, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | | | | | | | - Zheng Zhang
- Lineberger Comprehensive Cancer Center, and.,Research Center for Clinical & Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Giuseppe Pantaleo
- Service of Immunology and Allergy and.,Swiss Vaccine Research Institute, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Matthieu Perreau
- Service of Immunology and Allergy and.,Swiss Vaccine Research Institute, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Sandra Zurawski
- Vaccine Research Institute, Université Paris-Est, Faculté de Médecine, INSERM U955, Créteil, France.,Baylor Institute for Immunology Research and INSERM U955, Dallas, Texas, USA
| | - Gerard Zurawski
- Vaccine Research Institute, Université Paris-Est, Faculté de Médecine, INSERM U955, Créteil, France.,Baylor Institute for Immunology Research and INSERM U955, Dallas, Texas, USA
| | - Yves Levy
- Vaccine Research Institute, Université Paris-Est, Faculté de Médecine, INSERM U955, Créteil, France.,Assistance Publique-Hôpitaux de Paris, Groupe Henri-Mondor Albert-Chenevier, Service d'Immunologie Clinique, Créteil, France
| | - Lishan Su
- Lineberger Comprehensive Cancer Center, and.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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47
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Kim J, De La Cruz J, Lam K, Ng H, Daar ES, Balamurugan A, Yang OO. CD8 + Cytotoxic T Lymphocyte Responses and Viral Epitope Escape in Acute HIV-1 Infection. Viral Immunol 2018; 31:525-536. [PMID: 30059271 DOI: 10.1089/vim.2018.0040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Epitope escape from HIV-1-targeted CD8+ cytotoxic T lymphocyte (CTL) responses occurs rapidly after acute infection and contributes to the eventual failure of effective immune control of HIV-1 infection. Because the early CTL response is key in determining HIV-1 disease outcome, studying the process of epitope escape is crucial for understanding what leads to failure of immune control in acute HIV-1 infection and will provide important implications for HIV-1 vaccine design. HIV-1-specific CD8+ T lymphocyte responses against viral epitopes were mapped in six acutely infected individuals, and the magnitudes of these responses were measured longitudinally during acute infection. The evolution of autologous circulating viral epitopes was determined in four of these subjects. In-depth testing of CD8+ T lymphocyte responses against index and all autologous-detected variant epitopes was performed in one subject. Among the four individuals examined, 10 of a total of 35 CD8+ T cell responses within Gag, Pol, and Nef showed evidence of epitope escape. CTL responses with viral epitope variant evolution were shown in one subject, and this evolution occurred with and without measurable CTL responses against epitope variants. These results demonstrate a dynamic period of viral epitope evolution in early HIV-1 infection due to CD8+ CTL response pressure.
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Affiliation(s)
- Joseph Kim
- 1 Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Justin De La Cruz
- 1 Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Karen Lam
- 2 Department of Microbiology, Immunology, and Molecular Genetics, University of California , Los Angeles, California
| | - Hwee Ng
- 1 Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Eric S Daar
- 3 Los Angeles Biomedical Research Institute , Harbor-UCLA Medical Center, Torrance, California
| | - Arumugam Balamurugan
- 1 Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California , Los Angeles, California
| | - Otto O Yang
- 1 Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California , Los Angeles, California.,2 Department of Microbiology, Immunology, and Molecular Genetics, University of California , Los Angeles, California.,4 AIDS Healthcare Foundation , Los Angeles, California
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48
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Recovery of effective HIV-specific CD4+ T-cell activity following antiretroviral therapy in paediatric infection requires sustained suppression of viraemia. AIDS 2018; 32:1413-1422. [PMID: 29734220 PMCID: PMC6039399 DOI: 10.1097/qad.0000000000001844] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Background: The success of increasing access to antiretroviral therapy (ART) in paediatric HIV infection prompts the question of the potential for eradication of HIV infection in this age group. ‘Shock-and-kill’ HIV cure approaches, currently in development, may depend upon an effective antiviral T-cell response to eradicate virus-infected cells. Method: We here investigate the ability of HIV-infected children receiving ART from early childhood (median 24 months’ age) to generate effective HIV-specific CD4+ and CD8+ T-cell immune responses that would facilitate future immune-based cure therapies. Results: Initial analysis of ART-naive HIV-infected children demonstrated that maintenance of normal-for-age absolute CD4+ T-cell counts was strongly linked to high IL-2 production and polyfunctional HIV-specific CD4+ T-cell responses (P < 0.0001 in each case). Low viral load was, similarly, strongly associated with markedly low IFN-γ and high IL-2 HIV-specific CD4+ T-cell responses (P < 0.0001). In children receiving ART, establishment of this immune profile (high IL-2 and low IFN-γ HIV-specific T-cell production) was strongly related to the duration of viraemic suppression. Failure to suppress viraemia on ART, and even the successful suppression of viraemia interrupted by the occurrence of transient viraemia of more than 1000 HIV copies/ml, was associated with an immune profile of high IFN-γ and low IL-2 HIV-specific T-cell responses and low polyfunctionality. Conclusion: These data are consistent with recovery of functional CD4+ T-cell responses in ART-treated children, in contrast to relative lack of CD4+ T-cell function recovery described in ART-treated adults. However, the challenges of achieving long-term suppression of viraemia in ART-treated children through adolescence remain daunting.
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Liu W, Wong YC, Chen SMY, Tang J, Wang H, Cheung AKL, Chen Z. DNA prime/MVTT boost regimen with HIV-1 mosaic Gag enhances the potency of antigen-specific immune responses. Vaccine 2018; 36:4621-4632. [PMID: 29961605 DOI: 10.1016/j.vaccine.2018.06.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 05/12/2018] [Accepted: 06/21/2018] [Indexed: 10/28/2022]
Abstract
HIV-1 diversity and latent reservoir are the major challenges for the development of an effective AIDS vaccine. It is well indicated that Gag-specific CD8+ T cells serve as the dominant host immune surveillance for HIV-1 control, but it still remains a challenge for vaccine design to induce broader and stronger cytotoxic T cell immunity against the virus. Genetic variation of the HIV-1 gag gene across different clades is one of the reasons for the reduction of antigenic epitope coverage. Here, we report an immunization strategy with heterologous vaccines expressing a mosaic Gag antigen aimed to increase antigenic breadth against a wider spectrum of HIV-1 strains. Priming using a DNA vaccine via in vivo electroporation, followed by boosting with a live replication-competent modified vaccinia TianTan (MVTT) vectored vaccine, elicited greater and broader protective Gag-specific immune responses in mice. Compared to DNA or MVTT homologous immunization, the heterologous DNA/MVTT vaccination resulted in higher frequencies of broadly reactive, Gag-specific, polyfunctional, long-lived cytotoxic CD8+ T cells, as well as increased anti-Gag antibody titer. Importantly, the DNA/MVTT heterologous vaccination induced protection against EcoHIV and mesothelioma AB1-Gag challenges. In summary, the stronger protective Gag-specific immunity induced by the heterologous regimen using two safe vectors shows promise for further development to enhance anti-HIV-1 immunity. Our study has important implications for immunogen design and the development of an effective HIV-1 heterologous vaccination strategy.
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Affiliation(s)
- Wan Liu
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China; HKU-AIDS Institute Shenzhen Research Laboratory, Guangdong Key Laboratory of Emerging Infectious Diseases and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Shenzhen, PR China
| | - Yik Chun Wong
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China; HKU-AIDS Institute Shenzhen Research Laboratory, Guangdong Key Laboratory of Emerging Infectious Diseases and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Shenzhen, PR China
| | - Samantha M Y Chen
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China
| | - Jiansong Tang
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China; HKU-AIDS Institute Shenzhen Research Laboratory, Guangdong Key Laboratory of Emerging Infectious Diseases and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Shenzhen, PR China
| | - Haibo Wang
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China
| | - Allen Ka Loon Cheung
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China
| | - Zhiwei Chen
- AIDS Institute and Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong Special Administrative Region, PR China; HKU-AIDS Institute Shenzhen Research Laboratory, Guangdong Key Laboratory of Emerging Infectious Diseases and Shenzhen Key Laboratory of Infection and Immunity, Shenzhen Third People's Hospital, Shenzhen, PR China.
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Mahale P, Engels EA, Coghill AE, Kahn AR, Shiels MS. Cancer Risk in Older Persons Living With Human Immunodeficiency Virus Infection in the United States. Clin Infect Dis 2018; 67:50-57. [PMID: 29325033 PMCID: PMC6248478 DOI: 10.1093/cid/ciy012] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/06/2018] [Indexed: 01/11/2023] Open
Abstract
Background Cancer risk is increased in persons living with human immunodeficiency virus (HIV) (PLWH). Improved survival has led to an aging of PLWH. We evaluated the cancer risk in older PLWH (age ≥50 years). Methods We included data from the HIV/AIDS Cancer Match Study (1996-2012) and evaluated risks of Kaposi sarcoma (KS), non-Hodgkin lymphoma (NHL), Hodgkin lymphoma, and cervical, anal, lung, liver, oral cavity/pharyngeal, breast, prostate, and colon cancers in older PLWH with risk in the general population by calculating standardized incidence ratios (SIRs) and excess absolute risks (EARs). Cancer risk by time since HIV diagnosis was estimated using Poisson regression. Results We identified 10371 cancers among 183542 older PLWH. Risk was significantly increased for KS (SIR, 103.34), NHL (3.05), Hodgkin lymphoma (7.61), and cervical (2.02), anal (14.00), lung (1.71), liver (2.91), and oral cavity/pharyngeal (1.66) cancers, and reduced for breast (0.61), prostate (0.47), and colon (0.63) cancers. SIRs declined with age for all cancers; however, EARs increased with age for anal, lung, liver, and oral cavity/pharyngeal cancers. Cancer risk was highest for most cancers within 5 years after HIV diagnosis; risk decreased with increasing time since HIV diagnosis for KS, NHL, lung cancer, and Hodgkin lymphoma. Conclusions Cancer risk is elevated among older PLWH. Although SIRs decrease with age, EARs are higher for some cancers, reflecting a greater absolute excess in cancer incidence among older PLWH. High risk in the first 5 years after HIV diagnosis for some cancers highlights the need for early HIV diagnosis and rapid treatment initiation.
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Affiliation(s)
- Parag Mahale
- Division of Cancer Epidemiology & Genetics, National Cancer Institute,
Rockville, Maryland
| | - Eric A Engels
- Division of Cancer Epidemiology & Genetics, National Cancer Institute,
Rockville, Maryland
| | - Anna E Coghill
- Division of Cancer Epidemiology & Genetics, National Cancer Institute,
Rockville, Maryland
| | - Amy R Kahn
- New York State Cancer Registry, New York State Department of Health,
Albany
| | - Meredith S Shiels
- Division of Cancer Epidemiology & Genetics, National Cancer Institute,
Rockville, Maryland
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