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Moodie Z, Andersen-Nissen E, Grunenberg N, Dintwe OB, Omar FL, Kee JJ, Bekker LG, Laher F, Naicker N, Jani I, Mgodi NM, Hunidzarira P, Sebe M, Miner MD, Polakowski L, Ramirez S, Nebergall M, Takuva S, Sikhosana L, Heptinstall J, Seaton KE, De Rosa S, Diazgranados CA, Koutsoukos M, Van Der Meeren O, Barnett SW, Kanesa-thasan N, Kublin JG, Tomaras GD, McElrath MJ, Corey L, Mngadi K, Goepfert P. Safety and immunogenicity of a subtype C ALVAC-HIV (vCP2438) vaccine prime plus bivalent subtype C gp120 vaccine boost adjuvanted with MF59 or alum in healthy adults without HIV (HVTN 107): A phase 1/2a randomized trial. PLoS Med 2024; 21:e1004360. [PMID: 38502656 PMCID: PMC10986991 DOI: 10.1371/journal.pmed.1004360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 04/02/2024] [Accepted: 02/14/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND Adjuvants are widely used to enhance and/or direct vaccine-induced immune responses yet rarely evaluated head-to-head. Our trial directly compared immune responses elicited by MF59 versus alum adjuvants in the RV144-like HIV vaccine regimen modified for the Southern African region. The RV144 trial of a recombinant canarypox vaccine vector expressing HIV env subtype B (ALVAC-HIV) prime followed by ALVAC-HIV plus a bivalent gp120 protein vaccine boost adjuvanted with alum is the only trial to have shown modest HIV vaccine efficacy. Data generated after RV144 suggested that use of MF59 adjuvant might allow lower protein doses to be used while maintaining robust immune responses. We evaluated safety and immunogenicity of an HIV recombinant canarypox vaccine vector expressing HIV env subtype C (ALVAC-HIV) prime followed by ALVAC-HIV plus a bivalent gp120 protein vaccine boost (gp120) adjuvanted with alum (ALVAC-HIV+gp120/alum) or MF59 (ALVAC-HIV+gp120/MF59) or unadjuvanted (ALVAC-HIV+gp120/no-adjuvant) and a regimen where ALVAC-HIV+gp120 adjuvanted with MF59 was used for the prime and boost (ALVAC-HIV+gp120/MF59 coadministration). METHODS AND FINDINGS Between June 19, 2017 and June 14, 2018, 132 healthy adults without HIV in South Africa, Zimbabwe, and Mozambique were randomized to receive intramuscularly: (1) 2 priming doses of ALVAC-HIV (months 0 and 1) followed by 3 booster doses of ALVAC-HIV+gp120/MF59 (months 3, 6, and 12), n = 36; (2) 2 priming doses of ALVAC-HIV (months 0 and 1) followed by 3 booster doses of ALVAC-HIV+gp120/alum (months 3, 6, and 12), n = 36; (3) 4 doses of ALVAC-HIV+gp120/MF59 coadministered (months 0, 1, 6, and 12), n = 36; or (4) 2 priming doses of ALVAC-HIV (months 0 and 1) followed by 3 booster doses of ALVAC-HIV+gp120/no adjuvant (months 3, 6, and 12), n = 24. Primary outcomes were safety and occurrence and mean fluorescence intensity (MFI) of vaccine-induced gp120-specific IgG and IgA binding antibodies at month 6.5. All vaccinations were safe and well-tolerated; increased alanine aminotransferase was the most frequent related adverse event, occurring in 2 (1.5%) participants (1 severe, 1 mild). At month 6.5, vaccine-specific gp120 IgG binding antibodies were detected in 100% of vaccinees for all 4 vaccine groups. No significant differences were seen in the occurrence and net MFI of vaccine-specific IgA responses between the ALVAC-HIV+gp120/MF59-prime-boost and ALVAC-HIV+gp120/alum-prime-boost groups or between the ALVAC-HIV+gp120/MF59-prime-boost and ALVAC-HIV+gp120/MF59 coadministration groups. Limitations were the relatively small sample size per group and lack of evaluation of higher gp120 doses. CONCLUSIONS Although MF59 was expected to enhance immune responses, alum induced similar responses to MF59, suggesting that the choice between these adjuvants may not be critical for the ALVAC+gp120 regimen. TRIAL REGISTRATION HVTN 107 was registered with the South African National Clinical Trials Registry (DOH-27-0715-4894) and ClinicalTrials.gov (NCT03284710).
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Affiliation(s)
- Zoe Moodie
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Erica Andersen-Nissen
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Cape Town HVTN Immunology Laboratory, Hutchinson Centre Research Institute of South Africa, Cape Town, South Africa
| | - Nicole Grunenberg
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - One B. Dintwe
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Cape Town HVTN Immunology Laboratory, Hutchinson Centre Research Institute of South Africa, Cape Town, South Africa
| | - Faatima Laher Omar
- Cape Town HVTN Immunology Laboratory, Hutchinson Centre Research Institute of South Africa, Cape Town, South Africa
| | - Jia J. Kee
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Linda-Gail Bekker
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | - Fatima Laher
- Perinatal HIV Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Nivashnee Naicker
- Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa; and Department of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Ilesh Jani
- Instituto Nacional de Saude, Maputo, Mozambique
| | - Nyaradzo M. Mgodi
- Clinical Trials Research Centre, University of Zimbabwe College of Health Sciences, Harare, Zimbabwe
| | - Portia Hunidzarira
- Clinical Trials Research Centre, University of Zimbabwe College of Health Sciences, Harare, Zimbabwe
| | | | - Maurine D. Miner
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | | | - Shelly Ramirez
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Michelle Nebergall
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Simbarashe Takuva
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Lerato Sikhosana
- Hutchinson Centre Research Institute of South Africa, Johannesburg, South Africa
| | - Jack Heptinstall
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Kelly E. Seaton
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Stephen De Rosa
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Carlos A. Diazgranados
- Formerly Sanofi-Pasteur, Swiftwater, Pennsylvania, Pennsylvania, United States of America
| | | | | | - Susan W. Barnett
- Bill & Melinda Gates Foundation, Seattle, Washington, United States of America
| | | | - James G. Kublin
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Georgia D. Tomaras
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - M. Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | - Lawrence Corey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
| | | | - Paul Goepfert
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
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Richert L, Lelièvre JD, Lacabaratz C, Hardel L, Hocini H, Wiedemann A, Lucht F, Poizot-Martin I, Bauduin C, Diallo A, Rieux V, Rouch E, Surenaud M, Lefebvre C, Foucat E, Tisserand P, Guillaumat L, Durand M, Hejblum B, Launay O, Thiébaut R, Lévy Y. T Cell Immunogenicity, Gene Expression Profile, and Safety of Four Heterologous Prime-Boost Combinations of HIV Vaccine Candidates in Healthy Volunteers: Results of the Randomized Multi-Arm Phase I/II ANRS VRI01 Trial. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2663-2674. [PMID: 35613727 DOI: 10.4049/jimmunol.2101076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 04/03/2022] [Indexed: 06/15/2023]
Abstract
Heterologous prime-boost strategies are of interest for HIV vaccine development. The order of prime-boost components could be important for the induction of T cell responses. In this phase I/II multi-arm trial, three vaccine candidates were used as prime or boost: modified vaccinia Ankara (MVA) HIV-B (coding for Gag, Pol, Nef); HIV LIPO-5 (five lipopeptides from Gag, Pol, Nef); DNA GTU-MultiHIV B (coding for Rev, Nef, Tat, Gag, Env gp160 clade B). Healthy human volunteers (n = 92) were randomized to four groups: 1) MVA at weeks 0/8 + LIPO-5 at weeks 20/28 (M/L); 2) LIPO-5 at weeks 0/8 + MVA at weeks 20/28 (L/M); 3) DNA at weeks 0/4/12 + LIPO-5 at weeks 20/28 (G/L); 4) DNA at weeks 0/4/12 + MVA at weeks 20/28 (G/M). The frequency of IFN-γ-ELISPOT responders at week 30 was 33, 43, 0, and 74%, respectively. Only MVA-receiving groups were further analyzed (n = 62). Frequency of HIV-specific cytokine-positive (IFN-γ, IL-2, or TNF-α) CD4+ T cells increased significantly from week 0 to week 30 (median change of 0.06, 0.11, and 0.10% for M/L, L/M, and G/M, respectively), mainly after MVA vaccinations, and was sustained until week 52. HIV-specific CD8+ T cell responses increased significantly at week 30 in M/L and G/M (median change of 0.02 and 0.05%). Significant whole-blood gene expression changes were observed 2 wk after the first MVA injection, regardless of its use as prime or boost. An MVA gene signature was identified, including 86 genes mainly related to cell cycle pathways. Three prime-boost strategies led to CD4+ and CD8+ T cell responses and to a whole-blood gene expression signature primarily due to their MVA HIV-B component.
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Affiliation(s)
- Laura Richert
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- CHU de Bordeaux, Service d'Information Médicale, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | - Jean-Daniel Lelièvre
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
- Groupe Henri-Mondor Albert-Chenevier, AP-HP, Créteil, France
| | - Christine Lacabaratz
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Lucile Hardel
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | - Hakim Hocini
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Aurélie Wiedemann
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Frédéric Lucht
- CHU de Saint Etienne, Saint-Priest-en-Jarez, France
- Université Jean Monnet and Université de Lyon, Saint-Etienne, France
| | - Isabelle Poizot-Martin
- Aix-Marseille Université, APHM, INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, ISSPAM, APHM Sainte-Marguerite, Service d'Immuno-Hématologie Clinique, Marseille, France
| | - Claire Bauduin
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | | | - Véronique Rieux
- Vaccine Research Institute, Créteil, France
- INSERM-ANRS, Paris, France
| | - Elodie Rouch
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Vaccine Research Institute, Créteil, France
| | - Mathieu Surenaud
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Cécile Lefebvre
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Emile Foucat
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Pascaline Tisserand
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Lydia Guillaumat
- Vaccine Research Institute, Créteil, France
- INSERM U955, Université Paris-Est Créteil, Créteil, France
| | - Mélany Durand
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- Vaccine Research Institute, Créteil, France
| | - Boris Hejblum
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- Vaccine Research Institute, Créteil, France
| | - Odile Launay
- CIC 1417 F-CRIN I-REIVAC, INSERM, Hôpital Cochin, AP-HP, Paris, France; and
- Université Paris Descartes, Paris, France
| | - Rodolphe Thiébaut
- University of Bordeaux, INSERM, Bordeaux Population Health Research Center, UMR1219, Bordeaux, France
- Inria SISTM Team, Talence, France
- CHU de Bordeaux, Service d'Information Médicale, Bordeaux, France
- Vaccine Research Institute, Créteil, France
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Priming with DNA Expressing Trimeric HIV V1V2 Alters the Immune Hierarchy Favoring the Development of V2-Specific Antibodies in Rhesus Macaques. J Virol 2020; 95:JVI.01193-20. [PMID: 33087466 PMCID: PMC7944456 DOI: 10.1128/jvi.01193-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/08/2020] [Indexed: 12/17/2022] Open
Abstract
The RV144 vaccine trial revealed a correlation between reduced risk of HIV infection and the level of nonneutralizing-antibody (Ab) responses targeting specific epitopes in the second variable domain (V2) of the HIV gp120 envelope (Env) protein, suggesting this region as a target for vaccine development. To favor induction of V2-specific Abs, we developed a vaccine regimen that included priming with DNA expressing an HIV V1V2 trimeric scaffold immunogen followed by booster immunizations with a combination of DNA and protein in rhesus macaques. Priming vaccination with DNA expressing the HIV recombinant subtype CRF01_AE V1V2 scaffold induced higher and broader V2-specific Ab responses than vaccination with DNA expressing CRF01_AE gp145 Env. Abs recognizing the V2 peptide that was reported as a critical target in RV144 developed only after the priming immunization with V1V2 DNA. The V2-specific Abs showed several nonneutralizing Fc-mediated functions, including ADCP and C1q binding. Importantly, robust V2-specific Abs were maintained upon boosting with gp145 DNA and gp120 protein coimmunization. In conclusion, priming with DNA expressing the trimeric V1V2 scaffold alters the hierarchy of humoral immune responses to V2 region epitopes, providing a method for more efficient induction and maintenance of V2-specific Env Abs associated with reduced risk of HIV infection.IMPORTANCE The aim of this work was to design and test a vaccine regimen focusing the immune response on targets associated with infection prevention. We demonstrated that priming with a DNA vaccine expressing only the HIV Env V1V2 region induces Ab responses targeting the critical region in V2 associated with protection. This work shows that V1V2 scaffold DNA priming immunization provides a method to focus immune responses to the desired target region, in the absence of immune interference by other epitopes. This induced immune responses with improved recognition of epitopes important for protective immunity, namely, V2-specific humoral immune responses inversely correlating with HIV risk of infection in the RV144 trial.
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4
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Kallas EG, Grunenberg NA, Yu C, Manso B, Pantaleo G, Casapia M, Baden LR, Valencia J, Sobieszczyk M, Van Tieu H, Allen M, Hural J, Graham BS, Kublin J, Gilbert PB, Corey L, Goepfert PA, McElrath MJ, Johnson RP, Huang Y, Frahm N. Antigenic competition in CD4 + T cell responses in a randomized, multicenter, double-blind clinical HIV vaccine trial. Sci Transl Med 2020; 11:11/519/eaaw1673. [PMID: 31748227 DOI: 10.1126/scitranslmed.aaw1673] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 10/04/2019] [Indexed: 11/02/2022]
Abstract
T cell responses have been implicated in reduced risk of HIV acquisition in uninfected persons and control of viral replication in HIV-infected individuals. HIV Gag-specific T cells have been predominantly associated with post-infection control, whereas Env antigens are the target for protective antibodies; therefore, inclusion of both antigens is common in HIV vaccine design. However, inclusion of multiple antigens may provoke antigenic competition, reducing the potential effectiveness of the vaccine. HVTN 084 was a randomized, multicenter, double-blind phase 1 trial to investigate whether adding Env to a Gag/Pol vaccine decreases the magnitude or breadth of Gag/Pol-specific T cell responses. Fifty volunteers each received one intramuscular injection of 1 × 1010 particle units (PU) of rAd5 Gag/Pol and EnvA/B/C (3:1:1:1 mixture) or 5 × 109 PU of rAd5 Gag/Pol. CD4+ T cell responses to Gag/Pol measured 4 weeks after vaccination by cytokine expression were significantly higher in the group vaccinated without Env, whereas CD8+ T cell responses did not differ significantly between the two groups. Mapping of individual epitopes revealed greater breadth of the Gag/Pol-specific T cell response in the absence of Env compared to Env coimmunization. Addition of an Env component to a Gag/Pol vaccine led to reduced Gag/Pol CD4+ T cell response rate and magnitude as well as reduced epitope breadth, confirming the presence of antigenic competition. Therefore, T cell-based vaccine strategies should aim at choosing a minimalist set of antigens to reduce interference of individual vaccine components with the induction of the maximally achievable immune response.
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Affiliation(s)
- Esper G Kallas
- Division of Clinical Immunology and Allergy, University of São Paulo, São Paulo 05508, Brazil
| | - Nicole A Grunenberg
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Chenchen Yu
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Bryce Manso
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Giuseppe Pantaleo
- Division of Immunology and Allergy, Lausanne University Hospital (CHUV), 1011 Lausanne, Switzerland
| | | | - Lindsey R Baden
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Javier Valencia
- Asociación Civil Impacta Salud Y Educación, Lima 15063, Peru
| | - Magdalena Sobieszczyk
- Division of Infectious Diseases, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY 10025, USA
| | - Hong Van Tieu
- Laboratory of Infectious Disease Prevention, New York Blood Center, New York, NY 10065, USA
| | - Mary Allen
- Division of AIDS, National Institute for Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - John Hural
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | | | - James Kublin
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Peter B Gilbert
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Lawrence Corey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Paul A Goepfert
- Division of Infectious Disease and Department of Surgery, Division of Gastroenterology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - M Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.,Department of Global Health, University of Washington, Seattle, WA 98195, USA.,Department of Laboratory Medicine, University of Washington, Seattle, WA 98195, USA.,Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - R Paul Johnson
- Yerkes National Primate Research Center, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Yunda Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Nicole Frahm
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. .,Department of Global Health, University of Washington, Seattle, WA 98195, USA
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Hu X, Lu Z, Valentin A, Rosati M, Broderick KE, Sardesai NY, Marx PA, Mullins JI, Pavlakis GN, Felber BK. Gag and env conserved element CE DNA vaccines elicit broad cytotoxic T cell responses targeting subdominant epitopes of HIV and SIV Able to recognize virus-infected cells in macaques. Hum Vaccin Immunother 2018; 14:2163-2177. [PMID: 29939820 PMCID: PMC6183272 DOI: 10.1080/21645515.2018.1489949] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
HIV sequence diversity and the propensity of eliciting immunodominant responses targeting inessential variable regions are hurdles in the development of an effective AIDS vaccine. We developed a DNA vaccine comprising conserved elements (CE) of SIV p27Gag and HIV-1 Env and found that priming vaccination with CE DNA is critical to efficiently overcome the dominance imposed by Gag and Env variable regions. Here, we show that DNA vaccinated macaques receiving the CE prime/CE+full-length DNA co-delivery booster vaccine regimens developed broad, potent and durable cytotoxic T cell responses targeting conserved protein segments of SIV Gag and HIV Env. Gag CE-specific T cells showed robust anamnestic responses upon infection with SIVmac239 which led to the identification of CE-specific cytotoxic lymphocytes able to recognize epitopes covering distinct CE on the surface of SIV infected cells in vivo. Though not controlling infection overall, we found an inverse correlation between Gag CE-specific CD8+ T cell responses and peak viremia. The T cell responses induced by the HIV Env CE immunogen were recalled in some animals upon SIV infection, leading to the identification of two cross-reactive epitopes between HIV and SIV Env based in sequence homology. These data demonstrate that a vaccine combining Gag and Env CE DNA subverted the normal immunodominance patterns, eliciting immune responses that included subdominant, highly conserved epitopes. These vaccine regimens augment cytotoxic T cell responses to highly conserved epitopes in the viral proteome and maximize response breadth. The vaccine-induced CE-specific T cells were expanded upon SIV infection, indicating that the predicted CE epitopes incorporated in the DNA vaccine are processed and exposed by infected cells in their natural context within the viral proteome.
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Affiliation(s)
- Xintao Hu
- a Human Retrovirus Pathogenesis Section, Center for Cancer Research, National Cancer Institute at Frederick , Frederick , MD , USA
| | - Zhongyan Lu
- a Human Retrovirus Pathogenesis Section, Center for Cancer Research, National Cancer Institute at Frederick , Frederick , MD , USA
| | - Antonio Valentin
- b Human Retrovirus Section, Vaccine Branch, Center for Cancer Research , National Cancer Institute at Frederick , Frederick, Frederick , MD , USA
| | - Margherita Rosati
- b Human Retrovirus Section, Vaccine Branch, Center for Cancer Research , National Cancer Institute at Frederick , Frederick, Frederick , MD , USA
| | | | | | - Preston A Marx
- d Tulane National Primate Research Center and Department of Tropical Medicine, School of Public Health and Tropical Medicine , Tulane University , New Orleans , LA , USA
| | - James I Mullins
- e Departments of Microbiology, Medicine and Laboratory Medicine , University of Washington , Seattle , WA , USA
| | - George N Pavlakis
- b Human Retrovirus Section, Vaccine Branch, Center for Cancer Research , National Cancer Institute at Frederick , Frederick, Frederick , MD , USA
| | - Barbara K Felber
- a Human Retrovirus Pathogenesis Section, Center for Cancer Research, National Cancer Institute at Frederick , Frederick , MD , USA
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Hu X, Valentin A, Cai Y, Dayton F, Rosati M, Ramírez-Salazar EG, Kulkarni V, Broderick KE, Sardesai NY, Wyatt LS, Earl PL, Moss B, Mullins JI, Pavlakis GN, Felber BK. DNA Vaccine-Induced Long-Lasting Cytotoxic T Cells Targeting Conserved Elements of Human Immunodeficiency Virus Gag Are Boosted Upon DNA or Recombinant Modified Vaccinia Ankara Vaccination. Hum Gene Ther 2018; 29:1029-1043. [PMID: 29869530 PMCID: PMC6152849 DOI: 10.1089/hum.2018.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
DNA-based vaccines able to induce efficient cytotoxic T-cell responses targeting conserved elements (CE) of human immunodeficiency virus type 1 (HIV-1) Gag have been developed. These CE were selected by stringent conservation, the ability to induce T-cell responses with broad human leukocyte antigen coverage, and the association between recognition of CE epitopes and viral control in HIV-infected individuals. Based on homology to HIV, a simian immunodeficiency virus p27gag CE DNA vaccine has also been developed. This study reports on the durability of the CE-specific T-cell responses induced by HIV and simian immunodeficiency virus CE DNA-based prime/boost vaccine regimens in rhesus macaques, and shows that the initially primed CE-specific T-cell responses were efficiently boosted by a single CE DNA vaccination after the long rest period (up to 2 years). In another cohort of animals, the study shows that a single inoculation with non-replicating recombinant Modified Vaccinia Ankara (rMVA62B) also potently boosted CE-specific responses after around 1.5 years of rest. Both CE DNA and rMVA62B booster vaccinations increased the magnitude and cytotoxicity of the CE-specific responses while maintaining the breadth of CE recognition. Env produced by rMVA62B did not negatively interfere with the recall of the Gag CE responses. rMVA62B could be beneficial to further boosting the immune response to Gag in humans. Vaccine regimens that employ CE DNA as a priming immunogen hold promise for application in HIV prevention and therapy.
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Affiliation(s)
- Xintao Hu
- 1 Human Retrovirus Pathogenesis Section, National Cancer Institute, Frederick, Maryland
| | - Antonio Valentin
- 2 Human Retrovirus Section, National Cancer Institute, Frederick, Maryland
| | - Yanhui Cai
- 1 Human Retrovirus Pathogenesis Section, National Cancer Institute, Frederick, Maryland
| | - Frances Dayton
- 1 Human Retrovirus Pathogenesis Section, National Cancer Institute, Frederick, Maryland
| | - Margherita Rosati
- 2 Human Retrovirus Section, National Cancer Institute, Frederick, Maryland
| | | | - Viraj Kulkarni
- 1 Human Retrovirus Pathogenesis Section, National Cancer Institute, Frederick, Maryland
| | | | | | - Linda S Wyatt
- 4 Laboratory of Viral Diseases, NIAID, Bethesda, Maryland
| | | | - Bernard Moss
- 4 Laboratory of Viral Diseases, NIAID, Bethesda, Maryland
| | | | - George N Pavlakis
- 2 Human Retrovirus Section, National Cancer Institute, Frederick, Maryland
| | - Barbara K Felber
- 1 Human Retrovirus Pathogenesis Section, National Cancer Institute, Frederick, Maryland
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Malherbe DC, Mendy J, Vang L, Barnette PT, Reed J, Lakhashe SK, Owuor J, Gach JS, Legasse AW, Axthelm MK, LaBranche CC, Montefiori D, Forthal DN, Park B, Wilson JM, McLinden JH, Xiang J, Stapleton JT, Sacha JB, Haynes BF, Liao HX, Ruprecht RM, Smith J, Gurwith M, Haigwood NL, Alexander J. Combination Adenovirus and Protein Vaccines Prevent Infection or Reduce Viral Burden after Heterologous Clade C Simian-Human Immunodeficiency Virus Mucosal Challenge. J Virol 2018; 92:e01092-17. [PMID: 29093095 PMCID: PMC5752948 DOI: 10.1128/jvi.01092-17] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/13/2017] [Indexed: 01/24/2023] Open
Abstract
HIV vaccine development is focused on designing immunogens and delivery methods that elicit protective immunity. We evaluated a combination of adenovirus (Ad) vectors expressing HIV 1086.C (clade C) envelope glycoprotein (Env), SIV Gag p55, and human pegivirus GBV-C E2 glycoprotein. We compared replicating simian (SAd7) with nonreplicating human (Ad4) adenovirus-vectored vaccines paired with recombinant proteins in a novel prime-boost regimen in rhesus macaques, with the goal of eliciting protective immunity against SHIV challenge. In both vaccine groups, plasma and buccal Env-specific IgG, tier 1 heterologous neutralizing antibodies, and antibody-dependent cell-mediated viral inhibition were readily generated. High Env-specific T cell responses elicited in all vaccinees were significantly greater than responses targeting Gag. After three intrarectal exposures to heterologous tier 1 clade C SHIV, all 10 sham-vaccinated controls were infected, whereas 4/10 SAd7- and 3/10 Ad4-vaccinated macaques remained uninfected or maintained tightly controlled plasma viremia. Time to infection was significantly delayed in SAd7-vaccinated macaques compared to the controls. Cell-associated and plasma virus levels were significantly lower in each group of vaccinated macaques compared to controls; the lowest plasma viral burden was found in animals vaccinated with the SAd7 vectors, suggesting superior immunity conferred by the replicating simian vectors. Furthermore, higher V1V2-specific binding antibody titers correlated with viral control in the SAd7 vaccine group. Thus, recombinant Ad plus protein vaccines generated humoral and cellular immunity that was effective in either protecting from SHIV acquisition or significantly reducing viremia in animals that became infected, consequently supporting additional development of replicating Ad vectors as HIV vaccines.IMPORTANCE There is a well-acknowledged need for an effective AIDS vaccine that protects against HIV infection and limits in vivo viral replication and associated pathogenesis. Although replicating virus vectors have been advanced as HIV vaccine platforms, there have not been any direct comparisons of the replicating to the nonreplicating format. The present study directly compared the replicating SAd7 to nonreplicating Ad4 vectors in macaques and demonstrated that in the SAd7 vaccine group, the time to infection was significantly delayed compared to the control group, and V1V2 Env-specific binding antibodies correlated with viral outcomes. Viral control was significantly enhanced in vaccinated macaques compared to controls, and in infected SAd7-vaccinated macaques compared to Ad4-vaccinated macaques, suggesting that this vector may have conferred more effective immunity. Because blocking infection is so difficult with current vaccines, development of a vaccine that can limit viremia if infection occurs would be valuable. These data support further development of replicating adenovirus vectors.
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Affiliation(s)
- Delphine C Malherbe
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
| | | | - Lo Vang
- PaxVax, Inc., San Diego, California, USA
| | - Philip T Barnette
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
| | - Jason Reed
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, Oregon, USA
| | - Samir K Lakhashe
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Joshua Owuor
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas, USA
- Southwest National Primate Research Center, San Antonio, Texas, USA
| | - Johannes S Gach
- Division of Infectious Diseases, Department of Medicine, University of California, Irvine School of Medicine, Irvine, California, USA
| | - Alfred W Legasse
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
| | - Michael K Axthelm
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, Oregon, USA
| | - Celia C LaBranche
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
| | - David Montefiori
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Donald N Forthal
- Division of Infectious Diseases, Department of Medicine, University of California, Irvine School of Medicine, Irvine, California, USA
| | - Byung Park
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
| | - James M Wilson
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - James H McLinden
- The Iowa City Veterans Affairs Medical Center, Iowa City, Iowa, USA
- The University of Iowa, Iowa City, Iowa, USA
| | - Jinhua Xiang
- The Iowa City Veterans Affairs Medical Center, Iowa City, Iowa, USA
- The University of Iowa, Iowa City, Iowa, USA
| | - Jack T Stapleton
- The Iowa City Veterans Affairs Medical Center, Iowa City, Iowa, USA
- The University of Iowa, Iowa City, Iowa, USA
| | - Jonah B Sacha
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, Oregon, USA
| | - Barton F Haynes
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Pathology, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Hua-Xin Liao
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Ruth M Ruprecht
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas, USA
- Southwest National Primate Research Center, San Antonio, Texas, USA
| | | | | | - Nancy L Haigwood
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon, USA
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, Oregon, USA
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Ajbani SP, Velhal SM, Kadam RB, Patel VV, Lundstrom K, Bandivdekar AH. Immunogenicity of virus-like Semliki Forest virus replicon particles expressing Indian HIV-1C gag, env and polRT genes. Immunol Lett 2017; 190:221-232. [PMID: 28851629 DOI: 10.1016/j.imlet.2017.08.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 08/07/2017] [Accepted: 08/16/2017] [Indexed: 11/17/2022]
Abstract
Development of a vaccine targeting human immunodeficiency virus-1 subtype C (HIV-1C) is an important public health priority in regions with a high prevalence of the clade C virus. The present study demonstrates the immunogenicity of recombinant Semliki Forest virus (SFV)-based virus-like replicon particles (VRPs) expressing Indian HIV-1C env/gag/polRT genes. Immunization of mice with recombinant VRPs in a homologous prime-boost protocol, either individually or in combination, elicited significant antigen-specific IFN-γ T cell responses as detected by the ELISPOT assay. Additionally, Gag-specific TNF-α secreting CD8+ and CD4+ T cells and Env-specific IL-2 secreting T cells were also elicited by mice immunized with Gag and Env constructs, respectively, as estimated by intracellular cytokine staining assay. Moreover, an HIV Pol-specific TNF-α response was elicited in mice immunized with a combination of the three VRP constructs. Furthermore, HIV-1C Gag and Env-specific binding antibodies were elicited as verified by gp120 ELISA and p24 Gag ELISA, respectively. The immunogenicity of VRPs was found to be higher as compared to that of RNA replicons and VRPs may therefore be promising preventive and therapeutic candidate vaccines for the control and management of HIV/AIDS.
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Affiliation(s)
- Seema P Ajbani
- Department of Biochemistry and Virology, National Institute for Research in Reproductive Health (NIRRH), Parel, Mumbai 400012, India; Department of Zoology, Smt. C. H. M. College, University of Mumbai, Ulhasnagar 421003, India.
| | - Shilpa M Velhal
- Department of Biochemistry and Virology, National Institute for Research in Reproductive Health (NIRRH), Parel, Mumbai 400012, India.
| | - Ravindra B Kadam
- Department of Biochemistry and Virology, National Institute for Research in Reproductive Health (NIRRH), Parel, Mumbai 400012, India.
| | - Vainav V Patel
- Department of Biochemistry and Virology, National Institute for Research in Reproductive Health (NIRRH), Parel, Mumbai 400012, India.
| | | | - Atmaram H Bandivdekar
- Department of Biochemistry and Virology, National Institute for Research in Reproductive Health (NIRRH), Parel, Mumbai 400012, India.
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Interference of retroviral envelope with vaccine-induced CD8 + T cell responses is relieved by co-administration of cytokine-encoding vectors. Retrovirology 2017; 14:28. [PMID: 28449719 PMCID: PMC5408827 DOI: 10.1186/s12977-017-0352-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 04/20/2017] [Indexed: 11/13/2022] Open
Abstract
Background Retroviral envelope (Env) proteins are known to exhibit immunosuppressive properties, which become apparent not only in retroviral infections, but also in gene-based immunizations using retroviral immunogens, where envelope interferes with the induction of CD8+ T cell responses towards another, simultaneously or subsequently delivered, immunogen. Results In the Friend retrovirus mouse model, immunization with a plasmid encoding the Friend murine leukemia virus (F-MuLV) Leader-Gag protein resulted in induction of a strong GagL85–93-specific CD8+ T cell response, while the response was completely abrogated by co-immunization with an F-MuLV Env-encoding plasmid. In order to overcome this interference of retroviral envelope, we employed plasmids encoding the cytokines interleukin (IL) 1β, IL2, IL12, IL15, IL21, IL28A or granulocyte–macrophage colony-stimulating factor (GM-CSF) as genetic adjuvants. Co-application of plasmids encoding IL2, IL12, IL21, IL28A and especially GM-CSF rescued the induction of GagL85–93-specific CD8+ T cells in mice vaccinated with FV Leader-Gag and Env. Mice that were immunized with plasmids encoding Leader-Gag and Env and the cytokines IL1β, IL12, IL15, IL28A or GM-CSF, but not Leader-Gag and Env without any cytokine, showed significantly reduced viral loads upon a high-dose Friend virus challenge infection. Conclusions Our data demonstrate the potency of cytokine-encoding vectors as adjuvants and immune modulators in composite vaccines for anti-retroviral immunization. Electronic supplementary material The online version of this article (doi:10.1186/s12977-017-0352-7) contains supplementary material, which is available to authorized users.
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Kaulfuß M, Wensing I, Windmann S, Hrycak CP, Bayer W. Induction of complex immune responses and strong protection against retrovirus challenge by adenovirus-based immunization depends on the order of vaccine delivery. Retrovirology 2017; 14:8. [PMID: 28166802 PMCID: PMC5294899 DOI: 10.1186/s12977-017-0336-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 01/31/2017] [Indexed: 01/04/2023] Open
Abstract
Background In the Friend retrovirus mouse model we developed potent adenovirus-based vaccines that were designed to induce either strong Friend virus GagL85–93-specific CD8+ T cell or antibody responses, respectively. To optimize the immunization outcome we evaluated vaccination strategies using combinations of these vaccines. Results While the vaccines on their own confer strong protection from a subsequent Friend virus challenge, the simple combination of the vaccines for the establishment of an optimized immunization protocol did not result in a further improvement of vaccine effectivity. We demonstrate that the co-immunization with GagL85–93/leader-gag encoding vectors together with envelope-encoding vectors abrogates the induction of GagL85–93-specific CD8+ T cells, and in successive immunization protocols the immunization with the GagL85–93/leader-gag encoding vector had to precede the immunization with an envelope encoding vector for the efficient induction of GagL85–93-specific CD8+ T cells. Importantly, the antibody response to envelope was in fact enhanced when the mice were adenovirus-experienced from a prior immunization, highlighting the expedience of this approach. Conclusions To circumvent the immunosuppressive effect of envelope on immune responses to simultaneously or subsequently administered immunogens, we developed a two immunizations-based vaccination protocol that induces strong immune responses and confers robust protection of highly Friend virus-susceptible mice from a lethal Friend virus challenge. Electronic supplementary material The online version of this article (doi:10.1186/s12977-017-0336-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Meike Kaulfuß
- Institute for Virology, University Hospital Essen, University Duisburg-Essen, Virchowstr. 179, 45147, Essen, Germany
| | - Ina Wensing
- Institute for Virology, University Hospital Essen, University Duisburg-Essen, Virchowstr. 179, 45147, Essen, Germany
| | - Sonja Windmann
- Institute for Virology, University Hospital Essen, University Duisburg-Essen, Virchowstr. 179, 45147, Essen, Germany
| | - Camilla Patrizia Hrycak
- Institute for Virology, University Hospital Essen, University Duisburg-Essen, Virchowstr. 179, 45147, Essen, Germany
| | - Wibke Bayer
- Institute for Virology, University Hospital Essen, University Duisburg-Essen, Virchowstr. 179, 45147, Essen, Germany.
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Affiliation(s)
- Kenneth E Ugen
- a University of South Florida Morsani College of Medicine ; Tampa , FL USA
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