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Nelson AN, Shen X, Vekatayogi S, Zhang S, Ozorowski G, Dennis M, Sewall LM, Milligan E, Davis D, Cross KA, Chen Y, van Schooten J, Eudailey J, Isaac J, Memon S, Weinbaum C, Stanfield-Oakley S, Byrd A, Chutkan S, Berendam S, Cronin K, Yasmeen A, Alam SM, LaBranche CC, Rogers K, Shirreff L, Cupo A, Derking R, Villinger F, Klasse PJ, Ferrari G, Williams WB, Hudgens MG, Ward AB, Montefiori DC, Van Rompay KK, Wiehe K, Moore JP, Sanders RW, De Paris K, Permar SR. Germline-targeting SOSIP trimer immunization elicits precursor CD4 binding-site targeting broadly neutralizing antibodies in infant macaques. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.07.565306. [PMID: 37986885 PMCID: PMC10659289 DOI: 10.1101/2023.11.07.565306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
A vaccine that can achieve protective immunity prior to sexual debut is critical to prevent the estimated 410,000 new HIV infections that occur yearly in adolescents. As children living with HIV can make broadly neutralizing antibody (bnAb) responses in plasma at a faster rate than adults, early childhood is an opportune window for implementation of a multi-dose HIV immunization strategy to elicit protective immunity prior to adolescence. Therefore, the goal of our study was to assess the ability of a B cell lineage-designed HIV envelope SOSIP to induce bnAbs in early life. Infant rhesus macaques (RMs) received either BG505 SOSIP or the germline-targeting BG505 GT1.1 SOSIP (n=5/group) with the 3M-052-SE adjuvant at 0, 6, and 12 weeks of age. All infant RMs were then boosted with the BG505 SOSIP at weeks 26, 52 and 78, mimicking a pediatric immunization schedule of multiple vaccine boosts within the first two years of life. Both immunization strategies induced durable, high magnitude binding antibodies and plasma autologous virus neutralization that primarily targeted the CD4-binding site (CD4bs) or C3/465 epitope. Notably, three BG505 GT1.1-immunized infants exhibited a plasma HIV neutralization signature reflective of VRC01-like CD4bs bnAb precursor development and heterologous virus neutralization. Finally, infant RMs developed precursor bnAb responses at a similar frequency to that of adult RMs receiving a similar immunization strategy. Thus, a multi-dose immunization regimen with bnAb lineage designed SOSIPs is a promising strategy for inducing protective HIV bnAb responses in childhood prior to adolescence when sexual HIV exposure risk begins.
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Affiliation(s)
- Ashley N. Nelson
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
| | - Xiaoying Shen
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Sravani Vekatayogi
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Shiyu Zhang
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - Gabriel Ozorowski
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - Maria Dennis
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
| | - Leigh M. Sewall
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - Emma Milligan
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill; Chapel Hill, NC, USA
| | - Dominique Davis
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill; Chapel Hill, NC, USA
| | - Kaitlyn A. Cross
- Gillings School of Public Health and Center for AIDS Research, University of North Carolina at Chapel Hill; Chapel Hill, NC, USA
| | - Yue Chen
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Jelle van Schooten
- Department of Medical Microbiology, Academic Medical Center; Amsterdam, Netherlands
| | - Joshua Eudailey
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
| | - John Isaac
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
| | - Saad Memon
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
| | - Carolyn Weinbaum
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
| | | | - Alliyah Byrd
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Suni Chutkan
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Stella Berendam
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Kenneth Cronin
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Anila Yasmeen
- Department of Microbiology and Immunology, Weill Cornell Medicine; New York, NY, USA
| | - S. Munir Alam
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Celia C. LaBranche
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Kenneth Rogers
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, USA
| | - Lisa Shirreff
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, USA
| | - Albert Cupo
- Department of Microbiology and Immunology, Weill Cornell Medicine; New York, NY, USA
| | - Ronald Derking
- Department of Medical Microbiology, Academic Medical Center; Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Infectious Diseases, Amsterdam, the Netherlands
| | - Francois Villinger
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, USA
| | - Per Johan Klasse
- Department of Microbiology and Immunology, Weill Cornell Medicine; New York, NY, USA
| | - Guido Ferrari
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Wilton B. Williams
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - Michael G. Hudgens
- Gillings School of Public Health and Center for AIDS Research, University of North Carolina at Chapel Hill; Chapel Hill, NC, USA
| | - Andrew B. Ward
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | | | - Koen K.A. Van Rompay
- California National Primate Research Center, University of California; Davis, CA, USA
| | - Kevin Wiehe
- Human Vaccine Institute, Duke University Medical Center; Durham, NC, USA
| | - John P. Moore
- Department of Microbiology and Immunology, Weill Cornell Medicine; New York, NY, USA
| | - Rogier W. Sanders
- Department of Medical Microbiology, Academic Medical Center; Amsterdam, Netherlands
- Department of Microbiology and Immunology, Weill Cornell Medicine; New York, NY, USA
- Amsterdam Institute for Infection and Immunity, Infectious Diseases, Amsterdam, the Netherlands
| | - Kristina De Paris
- Department of Microbiology and Immunology, School of Medicine, University of North Carolina at Chapel Hill; Chapel Hill, NC, USA
| | - Sallie R. Permar
- Department of Pediatrics, Weill Cornell Medicine; New York, NY, USA
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2
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Milligan EC, Olstad K, Williams CA, Mallory M, Cano P, Cross KA, Munt JE, Garrido C, Lindesmith L, Watanabe J, Usachenko JL, Hopkins L, Immareddy R, Shaan Lakshmanappa Y, Elizaldi SR, Roh JW, Sammak RL, Pollard RE, Yee JL, Herbek S, Scobey T, Miehlke D, Fouda G, Ferrari G, Gao H, Shen X, Kozlowski PA, Montefiori D, Hudgens MG, Edwards DK, Carfi A, Corbett KS, Graham BS, Fox CB, Tomai M, Iyer SS, Baric R, Reader R, Dittmer DP, Van Rompay KKA, Permar SR, De Paris K. Infant rhesus macaques immunized against SARS-CoV-2 are protected against heterologous virus challenge 1 year later. Sci Transl Med 2023; 15:eadd6383. [PMID: 36454813 PMCID: PMC9765459 DOI: 10.1126/scitranslmed.add6383] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The U.S. Food and Drug Administration only gave emergency use authorization of the BNT162b2 and mRNA-1273 SARS-CoV-2 vaccines for infants 6 months and older in June 2022. Yet questions regarding the durability of vaccine efficacy, especially against emerging variants, in this age group remain. We demonstrated previously that a two-dose regimen of stabilized prefusion Washington SARS-CoV-2 S-2P spike (S) protein encoded by mRNA encapsulated in lipid nanoparticles (mRNA-LNP) or purified S-2P mixed with 3M-052, a synthetic Toll-like receptor (TLR) 7/8 agonist, in a squalene emulsion (Protein+3M-052-SE) was safe and immunogenic in infant rhesus macaques. Here, we demonstrate that broadly neutralizing and spike-binding antibodies against variants of concern (VOCs), as well as T cell responses, persisted for 12 months. At 1 year, corresponding to human toddler age, we challenged vaccinated rhesus macaques and age-matched nonvaccinated controls intranasally and intratracheally with a high dose of heterologous SARS-CoV-2 B.1.617.2 (Delta). Seven of eight control rhesus macaques exhibited severe interstitial pneumonia and high virus replication in the upper and lower respiratory tract. In contrast, vaccinated rhesus macaques had faster viral clearance with mild to no pneumonia. Neutralizing and binding antibody responses to the B.1.617.2 variant at the day of challenge correlated with lung pathology and reduced virus replication. Overall, the Protein+3M-052-SE vaccine provided superior protection to the mRNA-LNP vaccine, emphasizing opportunities for optimization of current vaccine platforms. The observed efficacy of both vaccines 1 year after vaccination supports the implementation of an early-life SARS-CoV-2 vaccine.
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Affiliation(s)
- Emma C Milligan
- Department of Microbiology and Immunology, Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Katherine Olstad
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Caitlin A Williams
- Department of Pediatrics, Weill Cornell Medical College, New York, NY 10065, USA
| | - Michael Mallory
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Patricio Cano
- Lineberger Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kaitlyn A Cross
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jennifer E Munt
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Carolina Garrido
- Center for Immunology and Infectious Diseases, University of California at Davis, Davis, CA 95616, USA
| | - Lisa Lindesmith
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jennifer Watanabe
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Jodie L Usachenko
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Lincoln Hopkins
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Ramya Immareddy
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | | | - Sonny R Elizaldi
- Center for Immunology and Infectious Diseases, University of California at Davis, Davis, CA 95616, USA.,Graduate Group in Immunology, University of California at Davis, Davis, CA 95616, USA
| | - Jamin W Roh
- Center for Immunology and Infectious Diseases, University of California at Davis, Davis, CA 95616, USA.,Graduate Group in Immunology, University of California at Davis, Davis, CA 95616, USA
| | - Rebecca L Sammak
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Rachel E Pollard
- School of Veterinary Medicine, University of California at Davis, Davis, CA 95616, USA
| | - JoAnn L Yee
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Savannah Herbek
- Department of Pediatrics, Weill Cornell Medical College, New York, NY 10065, USA
| | - Trevor Scobey
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Dieter Miehlke
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA.,Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA.,Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Genevieve Fouda
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA.,Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA.,Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA.,Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA.,Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Hongmei Gao
- Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - Xiaoying Shen
- Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - Pamela A Kozlowski
- Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - David Montefiori
- Department of Surgery, Duke University School of Medicine, Durham, NC 27710, USA
| | - Michael G Hudgens
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | | | | | - Kizzmekia S Corbett
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Barney S Graham
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20852, USA
| | - Christopher B Fox
- Access to Advanced Health Institute, Seattle, WA 98102, USA.,Department of Global Health, University of Washington, Seattle, WA 98105, USA
| | - Mark Tomai
- 3M Corporate Research Materials Laboratory, Saint Paul, MN 55144, USA
| | - Smita S Iyer
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA.,Center for Immunology and Infectious Diseases, University of California at Davis, Davis, CA 95616, USA
| | - Ralph Baric
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Rachel Reader
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA
| | - Dirk P Dittmer
- Department of Microbiology and Immunology, Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.,Department of Pediatrics, Weill Cornell Medical College, New York, NY 10065, USA
| | - Koen K A Van Rompay
- California National Primate Research Center, University of California at Davis, Davis, CA 95616, USA.,Department of Pathology, Microbiology and Immunology, University of California at Davis, Davis, CA 95616, USA
| | - Sallie R Permar
- Department of Pediatrics, Weill Cornell Medical College, New York, NY 10065, USA
| | - Kristina De Paris
- Department of Microbiology and Immunology, Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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3
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Nelson AN, Dennis M, Mangold JF, Li K, Saha PT, Cronin K, Cross KA, Kumar A, Mangan RJ, Shaw GM, Bar KJ, Haynes B, Moody AM, Munir Alam S, Pollara J, Hudgens MG, Van Rompay KKA, De Paris K, Permar SR. Leveraging antigenic seniority for maternal vaccination to prevent mother-to-child transmission of HIV-1. NPJ Vaccines 2022; 7:87. [PMID: 35907918 PMCID: PMC9338948 DOI: 10.1038/s41541-022-00505-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 07/01/2022] [Indexed: 01/21/2023] Open
Abstract
The development of a maternal HIV vaccine to synergize with current antiretroviral drug prophylaxis can overcome implementation challenges and further reduce mother-to-child transmission (MTCT) of HIV. Both the epitope-specificity and autologous neutralization capacity of maternal HIV envelope (Env)-specific antibodies have been implicated in decreased risk of MTCT of HIV. Our goal was to determine if heterologous HIV Env immunization of SHIV.C.CH505-infected, ART-suppressed female rhesus macaques (RMs) could boost autologous Env-specific antibodies. SHIV.C.CH505-infected female RMs (n = 12), began a daily ART regimen at 12 weeks post-infection (wpi), which was continued for 12 weeks. Starting 2 weeks after ART initiation, RMs received 3 monthly immunizations with HIV b.63521/1086.C gp120 or placebo (n = 6/group) vaccine with adjuvant STR8S-C. Compared to the placebo-immunized animals, Env-vaccinated, SHIV-infected RMs exhibited enhanced IgG binding, avidity, and ADCC responses against the vaccine immunogens and the autologous SHIV.C.CH505 Env. Notably, the Env-specific memory B cells elicited by heterologous vaccination were dominated by cells that recognized the SHIV.C.CH505 Env, the antigen of primary exposure. Thus, vaccination of SHIV-infected, ART-suppressed RMs with heterologous HIV Envs can augment multiple components of the antibody response against the Env antigen of primary exposure, suggesting antigenic seniority. Our results suggest that a universal maternal HIV vaccination regimen can be developed to leverage antigenic seniority in targeting the maternal autologous virus pool.
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Affiliation(s)
- Ashley N Nelson
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Maria Dennis
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Jesse F Mangold
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Katherine Li
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Pooja T Saha
- Gillings School of Public Health and Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kenneth Cronin
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Kaitlyn A Cross
- Gillings School of Public Health and Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Amit Kumar
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Riley J Mangan
- Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - George M Shaw
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Katharine J Bar
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Barton Haynes
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Anthony M Moody
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - S Munir Alam
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Justin Pollara
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Michael G Hudgens
- Gillings School of Public Health and Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Koen K A Van Rompay
- California National Primate Research Center, University of California, Davis, CA, USA
| | - Kristina De Paris
- Department of Microbiology and Immunology and Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sallie R Permar
- Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA.
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4
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Calvet-Mirabent M, Sánchez-Cerrillo I, Martín-Cófreces N, Martínez-Fleta P, de la Fuente H, Tsukalov I, Delgado-Arévalo C, Calzada MJ, de Los Santos I, Sanz J, García-Fraile L, Sánchez-Madrid F, Alfranca A, Muñoz-Fernández MÁ, Buzón MJ, Martín-Gayo E. Antiretroviral therapy duration and immunometabolic state determine efficacy of ex vivo dendritic cell-based treatment restoring functional HIV-specific CD8+ T cells in people living with HIV. EBioMedicine 2022; 81:104090. [PMID: 35665682 PMCID: PMC9301875 DOI: 10.1016/j.ebiom.2022.104090] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/11/2022] [Accepted: 05/18/2022] [Indexed: 12/12/2022] Open
Abstract
Background Dysfunction of CD8+ T cells in people living with HIV-1 (PLWH) receiving anti-retroviral therapy (ART) has restricted the efficacy of dendritic cell (DC)-based immunotherapies against HIV-1. Heterogeneous immune exhaustion and metabolic states of CD8+ T cells might differentially associate with dysfunction. However, specific parameters associated to functional restoration of CD8+ T cells after DC treatment have not been investigated. Methods We studied association of restoration of functional HIV-1-specific CD8+ T cell responses after stimulation with Gag-adjuvant-primed DC with ART duration, exhaustion, metabolic and memory cell subsets profiles. Findings HIV-1-specific CD8+ T cell responses from a larger proportion of PLWH on long-term ART (more than 10 years; LT-ARTp) improved polyfunctionality and capacity to eliminate autologous p24+ infected CD4+ T cells in vitro. In contrast, functional improvement of CD8+ T cells from PLWH on short-term ART (less than a decade; ST-ARTp) after DC treatment was limited. This was associated with lower frequencies of central memory CD8+ T cells, increased co-expression of PD1 and TIGIT and reduced mitochondrial respiration and glycolysis induction upon TCR activation. In contrast, CD8+ T cells from LT-ARTp showed increased frequencies of TIM3+ PD1− cells and preserved induction of glycolysis. Treatment of dysfunctional CD8+ T cells from ST-ARTp with combined anti-PD1 and anti-TIGIT antibodies plus a glycolysis promoting drug restored their ability to eliminate infected CD4+ T cells. Interpretation Together, our study identifies specific immunometabolic parameters for different PLWH subgroups potentially useful for future personalized DC-based HIV-1 vaccines. Funding NIH (R21AI140930), MINECO/FEDER RETOS (RTI2018-097485-A-I00) and CIBERINF grants.
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Affiliation(s)
- Marta Calvet-Mirabent
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain
| | - Ildefonso Sánchez-Cerrillo
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain
| | - Noa Martín-Cófreces
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red Cardiovascular, CIBERCV, 28029 Madrid, Spain
| | - Pedro Martínez-Fleta
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Hortensia de la Fuente
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red Cardiovascular, CIBERCV, 28029 Madrid, Spain
| | | | - Cristina Delgado-Arévalo
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain
| | | | - Ignacio de Los Santos
- Infectious Diseases Unit from Hospital Universitario de La Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red Infecciosas, CIBERINF, 28029 Madrid, Spain
| | - Jesús Sanz
- Infectious Diseases Unit from Hospital Universitario de La Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red Infecciosas, CIBERINF, 28029 Madrid, Spain
| | - Lucio García-Fraile
- Infectious Diseases Unit from Hospital Universitario de La Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red Infecciosas, CIBERINF, 28029 Madrid, Spain
| | - Francisco Sánchez-Madrid
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red Cardiovascular, CIBERCV, 28029 Madrid, Spain
| | - Arantzazu Alfranca
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - María Ángeles Muñoz-Fernández
- Immunology Section, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Maria J Buzón
- Infectious Diseases Department, Institut de Recerca Hospital Univesritari Vall d'Hebrón (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Enrique Martín-Gayo
- Immunology Unit from Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red Infecciosas, CIBERINF, 28029 Madrid, Spain.
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5
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Kondakova OA, Evtushenko EA, Baranov OA, Nikitin NA, Karpova OV. Structurally Modified Plant Viruses and Bacteriophages with Helical Structure. Properties and Applications. BIOCHEMISTRY (MOSCOW) 2022; 87:548-558. [PMID: 35790410 PMCID: PMC9201271 DOI: 10.1134/s0006297922060062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Structurally modified virus particles can be obtained from the rod-shaped or filamentous virions of plant viruses and bacteriophages by thermal or chemical treatment. They have recently attracted attention of the researchers as promising biogenic platforms for the development of new biotechnologies. This review presents data on preparation, structure, and properties of the structurally modified virus particles. In addition, their biosafety for animals is considered, as well as the areas of application of such particles in biomedicine. A separate section is devoted to one of the most relevant and promising areas for the use of structurally modified plant viruses – design of vaccine candidates based on them.
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Affiliation(s)
- Olga A Kondakova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | | | - Oleg A Baranov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Nikolai A Nikitin
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Olga V Karpova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
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6
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Liu Y, Li C, Xia H, Bi J, Guan R, Du X, Zhang H, He Z, Wang Y, Liu H. An injectable superior depot of Telratolimod inhibits post-surgical tumor recurrence and distant metastases. Acta Biomater 2022; 141:132-139. [PMID: 35032721 DOI: 10.1016/j.actbio.2022.01.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/28/2021] [Accepted: 01/06/2022] [Indexed: 02/06/2023]
Abstract
The clinical success of Toll-like receptor (TLR) agonists is based on their capacity to efficiently mobilize both innate and adaptive immunity. However, rapid distribution of TLR agonists into the systemic circulation may result in systemic cytokine storms. Telratolimod (Tel) is a TLR 7/8 agonist whose structure has a hydrophobic long chain that helps to prolong its release. Despite this, the phase I study of Tel showed cytokine release syndromes in 3/35 patients. Herein, we designed an injectable phase transition gel (PGE) that served as a superior drug depot for fatty acid-modified drugs. PGE further minimized the systemic drug exposure of Tel and the possible cytokine storms. In vivo studies demonstrated that Tel@PGE facilitated the recruitment of effector CD8+ T lymphocytes (T cells) and the polarization of myeloid-derived suppressor cells (MDSCs) and immunosuppressive M2-like macrophages to tumoricidal antigen-presenting cells. The reshaping of the tumor microenvironment (TME) by Tel@PGE elicited systematic immune responses to significantly prevent B16F10 or 4T-1 tumor postoperative recurrence and metastasis. Therefore, this platform of Tel is expected to provide a clinically available option for effective postoperative combined therapy. STATEMENT OF SIGNIFICANCE: A series of prodrugs or conjugates containing hydrophobic blocks were designed to achieve sustained release at the injection site by reducing the water solubility. However, this strategy sometimes failed short of expectations. Thus, we constructed a biocompatible and biodegradable injectable phase transition gel (PGE) with superior release properties that can be injected subcutaneously into the surgery site. In the long-lasting treatment, the melanoma and breast cancer immunotherapeutic effect significantly enhanced and the risk of cancer metastasis and relapse was reduced. Crucially, for some immune agonists, a superior release control can significantly reduce adverse effects which was decisive for the availability of the drugs.
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Affiliation(s)
- Yubo Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Chang Li
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hong Xia
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jiahao Bi
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Rou Guan
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaoxiao Du
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Haotian Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zhonggui He
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yongjun Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Hongzhuo Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China.
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7
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Vaccine-Induced, High-Magnitude HIV Env-Specific Antibodies with Fc-Mediated Effector Functions Are Insufficient to Protect Infant Rhesus Macaques against Oral SHIV Infection. mSphere 2022; 7:e0083921. [PMID: 35196125 PMCID: PMC8865927 DOI: 10.1128/msphere.00839-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Improved access to antiretroviral therapy (ART) and antenatal care has significantly reduced in utero and peripartum mother-to-child human immunodeficiency virus (HIV) transmission. However, as breast milk transmission of HIV still occurs at an unacceptable rate, there remains a need to develop an effective vaccine for the pediatric population. Previously, we compared different HIV vaccine strategies, intervals, and adjuvants in infant rhesus macaques to optimize the induction of HIV envelope (Env)-specific antibodies with Fc-mediated effector function. In this study, we tested the efficacy of an optimized vaccine regimen against oral simian-human immunodeficiency virus (SHIV) acquisition in infant macaques. Twelve animals were immunized with 1086.c gp120 protein adjuvanted with 3M-052 in stable emulsion and modified vaccinia Ankara (MVA) virus expressing 1086.c HIV Env. Twelve control animals were immunized with empty MVA. The vaccine prime was given within 10 days of birth, with booster doses being administered at weeks 6 and 12. The vaccine regimen induced Env-specific plasma IgG antibodies capable of antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis (ADCP). Beginning at week 15, infants were exposed orally to escalating doses of heterologous SHIV-1157(QNE)Y173H once a week until infected. Despite the induction of strong Fc-mediated antibody responses, the vaccine regimen did not reduce the risk of infection or time to acquisition compared to controls. However, among vaccinated animals, ADCC postvaccination and postinfection was associated with reduced peak viremia. Thus, nonneutralizing Env-specific antibodies with Fc effector function elicited by this vaccine regimen were insufficient for protection against heterologous oral SHIV infection shortly after the final immunization but may have contributed to control of viremia. IMPORTANCE Women of childbearing age are three times more likely to contract HIV infection than their male counterparts. Poor HIV testing rates coupled with low adherence to antiretroviral therapy (ART) result in a high risk of mother-to-infant HIV transmission, especially during the breastfeeding period. A preventative vaccine could curb pediatric HIV infections, reduce potential health sequalae, and prevent the need for lifelong ART in this population. The results of the current study imply that the HIV Env-specific IgG antibodies elicited by this candidate vaccine regimen, despite a high magnitude of Fc-mediated effector function but a lack of neutralizing antibodies and polyfunctional T cell responses, were insufficient to protect infant rhesus macaques against oral virus acquisition.
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8
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Berendam SJ, Morgan-Asiedu PK, Mangan RJ, Li SH, Heimsath H, Luo K, Curtis AD, Eudailey JA, Fox CB, Tomai MA, Phillips B, Itell HL, Kunz E, Hudgens M, Cronin K, Wiehe K, Alam SM, Van Rompay KKA, De Paris K, Permar SR, Moody MA, Fouda GG. Different adjuvanted pediatric HIV envelope vaccines induced distinct plasma antibody responses despite similar B cell receptor repertoires in infant rhesus macaques. PLoS One 2022; 16:e0256885. [PMID: 34972105 PMCID: PMC8719683 DOI: 10.1371/journal.pone.0256885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 12/09/2021] [Indexed: 11/25/2022] Open
Abstract
Different HIV vaccine regimens elicit distinct plasma antibody responses in both human and nonhuman primate models. Previous studies in human and non-human primate infants showed that adjuvants influenced the quality of plasma antibody responses induced by pediatric HIV envelope vaccine regimens. We recently reported that use of the 3M052-SE adjuvant and longer intervals between vaccinations are associated with higher magnitude of antibody responses in infant rhesus macaques. However, the impact of different adjuvants in HIV vaccine regimens on the developing infant B cell receptor (BCR) repertoire has not been studied. This study evaluated whether pediatric HIV envelope vaccine regimens with different adjuvants induced distinct antigen-specific memory B cell repertoires and whether specific immunoglobulin (Ig) immunogenetic characteristics are associated with higher magnitude of plasma antibody responses in vaccinated infant rhesus macaques. We utilized archived preclinical pediatric HIV vaccine studies PBMCs and tissue samples from 19 infant rhesus macaques immunized either with (i) HIV Env protein with a squalene adjuvant, (ii) MVA-HIV and Env protein co-administered using a 3-week interval, (iii) MVA-HIV prime/ protein boost with an extended 6-week interval between immunizations, or (iv) with HIV Env administered with 3M-052-SE adjuvant. Frequencies of vaccine-elicited HIV Env-specific memory B cells from PBMCs and tissues were similar across vaccination groups (frequency range of 0.06–1.72%). There was no association between vaccine-elicited antigen-specific memory B cell frequencies and plasma antibody titer or avidity. Moreover, the epitope specificity and Ig immunogenetic features of vaccine-elicited monoclonal antibodies did not differ between the different vaccine regimens. These data suggest that pediatric HIV envelope vaccine candidates with different adjuvants that previously induced higher magnitude and quality of plasma antibody responses in infant rhesus macaques were not driven by distinct antigen-specific memory BCR repertoires.
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Affiliation(s)
- Stella J. Berendam
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Papa K. Morgan-Asiedu
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Riley J. Mangan
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Shuk Hang Li
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Holly Heimsath
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Kan Luo
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Alan D. Curtis
- Department of Microbiology and Immunology, Children’s Research Institute and Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Joshua A. Eudailey
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
- Department of Pediatrics, Weill Cornell College of Medicine, New York City, New York, United States of America
| | - Christopher B. Fox
- Infectious Disease Research Institute (IDRI), Seattle, Washington State, United States of America
- Department of Global Health, University of Washington, Seattle, Washington State, United States of America
| | - Mark A. Tomai
- 3M Center, 3 M Drug Delivery Systems, St. Paul, Minnesota, United States of America
| | - Bonnie Phillips
- Department of Microbiology and Immunology, Children’s Research Institute and Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Hannah L. Itell
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Erika Kunz
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Michael Hudgens
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Kenneth Cronin
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Kevin Wiehe
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - S. Munir Alam
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Koen K. A. Van Rompay
- California National Primate Research Center, University of California at Davis, Davis, California, United States of America
| | - Kristina De Paris
- Department of Microbiology and Immunology, Children’s Research Institute and Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Sallie R. Permar
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
- Department of Pediatrics, Weill Cornell College of Medicine, New York City, New York, United States of America
| | - M. Anthony Moody
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Genevieve G. Fouda
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, United States of America
- * E-mail:
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9
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Vijayan KKV, Cross KA, Curtis AD, Van Rompay KKA, Pollara J, Fox CB, Tomai M, Hanke T, Fouda G, Hudgens MG, Permar SR, De Paris K. Early Post-Vaccination Gene Signatures Correlate With the Magnitude and Function of Vaccine-Induced HIV Envelope-Specific Plasma Antibodies in Infant Rhesus Macaques. Front Immunol 2022; 13:840976. [PMID: 35572573 PMCID: PMC9094446 DOI: 10.3389/fimmu.2022.840976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/28/2022] [Indexed: 01/21/2023] Open
Abstract
A better understanding of the impact of early innate immune responses after vaccine priming on vaccine-elicited adaptive immune responses could inform rational design for effective HIV vaccines. The current study compared the whole blood molecular immune signatures of a 3M-052-SE adjuvanted HIV Env protein vaccine to a regimen combining the adjuvanted Env protein with simultaneous administration of a modified Vaccinia Ankara vector expressing HIV Env in infant rhesus macaques at days 0, 1, and 3 post vaccine prime. Both vaccines induced a rapid innate response, evident by elevated inflammatory plasma cytokines and altered gene expression. We identified 25 differentially-expressed genes (DEG) on day 1 compared to day 0 in the HIV protein vaccine group. In contrast, in the group that received both the Env protein and the MVA-Env vaccine only two DEG were identified, implying that the MVA-Env modified the innate response to the adjuvanted protein vaccine. By day 3, only three DEG maintained altered expression, indicative of the transient nature of the innate response. The DEG represented immune pathways associated with complement activation, type I interferon and interleukin signaling, pathogen sensing, and induction of adaptive immunity. DEG expression on day 1 was correlated to Env-specific antibody responses, in particular antibody-dependent cytotoxicity responses at week 34, and Env-specific follicular T helper cells. Results from network analysis supported the interaction of DEG and their proteins in B cell activation. These results emphasize that vaccine-induced HIV-specific antibody responses can be optimized through the modulation of the innate response to the vaccine prime.
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Affiliation(s)
- K K Vidya Vijayan
- Department of Microbiology and Immunology, Center for AIDS Research, and Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Kaitlyn A Cross
- Department of Biostatistics, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Alan D Curtis
- Department of Microbiology and Immunology, Center for AIDS Research, and Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Koen K A Van Rompay
- California National Primate Research Center, University of California, Davis, Davis, CA, United States
| | - Justin Pollara
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, United States.,Departent of Surgery, Duke University School of Medicine, Durham, NC, United States.,Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC, United States
| | | | - Mark Tomai
- 3M Corporate Research Materials Laboratory, Saint Paul, MN, United States
| | - Tomáš Hanke
- The Jenner Institute, University of Oxford, Oxford, United Kingdom.,Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Genevieve Fouda
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, United States
| | - Michael G Hudgens
- Department of Biostatistics, Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sallie R Permar
- Department of Pediatrics, Weill Cornell Medical College, New York, NY, United States
| | - Kristina De Paris
- Department of Microbiology and Immunology, Center for AIDS Research, and Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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10
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Cox A, Cevik H, Feldman HA, Canaday LM, Lakes N, Waggoner SN. Targeting natural killer cells to enhance vaccine responses. Trends Pharmacol Sci 2021; 42:789-801. [PMID: 34311992 DOI: 10.1016/j.tips.2021.06.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/21/2021] [Accepted: 06/13/2021] [Indexed: 02/06/2023]
Abstract
Vaccination serves as a cornerstone of global health. Successful prevention of infection or disease by vaccines is achieved through elicitation of pathogen-specific antibodies and long-lived memory T cells. However, several microbial threats to human health have proven refractory to past vaccine efforts. These shortcomings have been attributed to either inefficient triggering of memory T and B cell responses or to the unfulfilled need to stimulate non-conventional forms of immunological memory. Natural killer (NK) cells have recently emerged as both key regulators of vaccine-elicited T and B cell responses and as memory cells that contribute to pathogen control. We discuss potential methods to modulate these functions of NK cells to enhance vaccine success.
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Affiliation(s)
- Andrew Cox
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Hilal Cevik
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Molecular and Developmental Biology Graduate Program, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - H Alex Feldman
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Laura M Canaday
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Nora Lakes
- Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Stephen N Waggoner
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Molecular and Developmental Biology Graduate Program, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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11
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Garrido C, Curtis AD, Dennis M, Pathak SH, Gao H, Montefiori D, Tomai M, Fox CB, Kozlowski PA, Scobey T, Munt JE, Mallory ML, Saha PT, Hudgens MG, Lindesmith LC, Baric RS, Abiona OM, Graham B, Corbett KS, Edwards D, Carfi A, Fouda G, Van Rompay KKA, De Paris K, Permar SR. SARS-CoV-2 vaccines elicit durable immune responses in infant rhesus macaques. Sci Immunol 2021; 6:6/60/eabj3684. [PMID: 34131024 PMCID: PMC8774290 DOI: 10.1126/sciimmunol.abj3684] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/04/2021] [Indexed: 12/17/2022]
Abstract
The inclusion of infants in the SARS-CoV-2 vaccine roll-out is important to prevent severe complications of pediatric SARS-CoV-2 infections and to limit transmission and could possibly be implemented via the global pediatric vaccine schedule. However, age-dependent differences in immune function require careful evaluation of novel vaccines in the pediatric population. Toward this goal, we assessed the safety and immunogenicity of two SARS-CoV-2 vaccines. Two groups of 8 infant rhesus macaques (RMs) were immunized intramuscularly at weeks 0 and 4 with stabilized prefusion SARS-CoV-2 S-2P spike (S) protein encoded by mRNA encapsulated in lipid nanoparticles (mRNA-LNP) or the purified S protein mixed with 3M-052, a synthetic TLR7/8 agonist in a squalene emulsion (Protein+3M-052-SE). Neither vaccine induced adverse effects. Both vaccines elicited high magnitude IgG binding to RBD, N terminus domain, S1, and S2, ACE2 blocking activity, and high neutralizing antibody titers, all peaking at week 6. S-specific memory B cells were detected by week 4 and S-specific T cell responses were dominated by the production of IL-17, IFN-γ, or TNF-α. Antibody and cellular responses were stable through week 22. The immune responses for the mRNA-LNP vaccine were of a similar magnitude to those elicited by the Moderna mRNA-1273 vaccine in adults. The S-2P mRNA-LNP and Protein-3M-052-SE vaccines were well-tolerated and highly immunogenic in infant RMs, providing proof-of concept for a pediatric SARS-CoV-2 vaccine with the potential for durable immunity that might decrease the transmission of SARS-CoV-2 and mitigate the ongoing health and socioeconomic impacts of COVID-19.
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Affiliation(s)
- Carolina Garrido
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, USA
| | - Alan D Curtis
- Department of Microbiology and Immunology, Center for AIDS Research, and Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Maria Dennis
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, USA
| | - Sachi H Pathak
- Department of Microbiology and Immunology, Center for AIDS Research, and Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hongmei Gao
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, USA
| | - David Montefiori
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, USA
| | - Mark Tomai
- 3M Corporate Research Materials Laboratory, Saint Paul, MN, USA
| | | | - Pamela A Kozlowski
- Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Trevor Scobey
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jennifer E Munt
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michael L Mallory
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Pooja T Saha
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michael G Hudgens
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lisa C Lindesmith
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ralph S Baric
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Olubukola M Abiona
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MA, USA
| | - Barney Graham
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MA, USA
| | - Kizzmekia S Corbett
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MA, USA
| | | | | | - Genevieve Fouda
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, USA
| | - Koen K A Van Rompay
- California National Primate Research Center, University of California, Davis, CA, USA
| | - Kristina De Paris
- Department of Microbiology and Immunology, Center for AIDS Research, and Children's Research Institute, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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12
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Budroni S, Buricchi F, Cavallone A, Bourguignon P, Caubet M, Dewar V, D'Oro U, Finco O, Garçon N, El Idrissi M, Janssens M, Leroux-Roels G, Marchant A, Schwarz T, Van Damme P, Volpini G, van der Most R, Didierlaurent AM, Burny W. Antibody avidity, persistence, and response to antigen recall: comparison of vaccine adjuvants. NPJ Vaccines 2021; 6:78. [PMID: 34021167 PMCID: PMC8140094 DOI: 10.1038/s41541-021-00337-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 04/09/2021] [Indexed: 12/12/2022] Open
Abstract
Differences in innate immune ‘imprinting’ between vaccine adjuvants may mediate dissimilar effects on the quantity/quality of persisting adaptive responses. We compared antibody avidity maturation, antibody/memory B cell/CD4+ T cell response durability, and recall responses to non-adjuvanted fractional-dose antigen administered 1-year post-immunization (Day [D]360), between hepatitis B vaccines containing Adjuvant System (AS)01B, AS01E, AS03, AS04, or Alum (NCT00805389). Both the antibody and B cell levels ranked similarly (AS01B/E/AS03 > AS04 > Alum) at peak response, at D360, and following their increases post-antigen recall (D390). Proportions of high-avidity antibodies increased post-dose 2 across all groups and persisted at D360, but avidity maturation appeared to be more strongly promoted by AS vs. Alum. Post-antigen recall, frequencies of subjects with high-avidity antibodies increased only markedly in the AS groups. Among the AS, total antibody responses were lowest for AS04. However, proportions of high-avidity antibodies were similar between groups, suggesting that MPL in AS04 contributes to avidity maturation. Specific combinations of immunoenhancers in the AS, regardless of their individual nature, increase antibody persistence and avidity maturation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Arnaud Marchant
- Institute for Medical Immunology, Université libre de Bruxelles, Brussels, Belgium
| | - Tino Schwarz
- Institute of Laboratory Medicine and Vaccination Center, Klinikum Wuerzburg Mitte, Standort Juliusspital, Academic Teaching Hospital of the University of Wuerzburg, Wuerzburg, Germany
| | - Pierre Van Damme
- Center for the Evaluation of Vaccination, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
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13
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Garrido C, Curtis AD, Dennis M, Pathak SH, Gao H, Montefiori D, Tomai M, Fox CB, Kozlowski PA, Scobey T, Munt JE, Mallroy ML, Saha PT, Hudgens MG, Lindesmith LC, Baric RS, Abiona OM, Graham B, Corbett KS, Edwards D, Carfi A, Fouda G, Van Rompay KKA, De Paris K, Permar SR. SARS-CoV-2 Vaccines Elicit Durable Immune Responses in Infant Rhesus Macaques. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021. [PMID: 33851156 DOI: 10.1101/2021.04.05.438479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Early life SARS-CoV-2 vaccination has the potential to provide lifelong protection and achieve herd immunity. To evaluate SARS-CoV-2 infant vaccination, we immunized two groups of 8 infant rhesus macaques (RMs) at weeks 0 and 4 with stabilized prefusion SARS-CoV-2 S-2P spike (S) protein, either encoded by mRNA encapsulated in lipid nanoparticles (mRNA-LNP) or mixed with 3M-052-SE, a TLR7/8 agonist in a squalene emulsion (Protein+3M-052-SE). Neither vaccine induced adverse effects. High magnitude S-binding IgG and neutralizing infectious dose 50 (ID 50 ) >10 3 were elicited by both vaccines. S-specific T cell responses were dominated by IL-17, IFN- γ , or TNF- α . Antibody and cellular responses were stable through week 22. The S-2P mRNA-LNP and Protein-3M-052-SE vaccines are promising pediatric SARS-CoV-2 vaccine candidates to achieve durable protective immunity. One-Sentence Summary SARS-CoV-2 vaccines are well-tolerated and highly immunogenic in infant rhesus macaques.
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14
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Van de Perre P, Goga A, Ngandu N, Nagot N, Moodley D, King R, Molès JP, Mosqueira B, Chirinda W, Scarlatti G, Tylleskär T, Dabis F, Gray G. Eliminating postnatal HIV transmission in high incidence areas: need for complementary biomedical interventions. Lancet 2021; 397:1316-1324. [PMID: 33812490 DOI: 10.1016/s0140-6736(21)00570-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 06/06/2020] [Accepted: 10/02/2020] [Indexed: 11/24/2022]
Abstract
The rate of mother-to-child transmission (MTCT) of HIV from breastfeeding is increasing relative to other causes of MTCT. Early effective preconception and antenatal antiretroviral therapy (ART) reduces intrauterine and intrapartum MTCT, whereas maternal post-partum HIV acquisition, untreated maternal HIV, and suboptimal postnatal maternal ART adherence increase the risk of MTCT through breastfeeding. Although the absolute number of cases of MTCT acquired through breastfeeding is decreasing, the rate of decrease is less than the decrease in intrauterine and intrapartum MTCT. Unless current strategies are universally applied, they might not be sufficient to eliminate MTCT due to breastfeeding. Urgent action is needed to evaluate and implement additional preventive biomedical strategies in high HIV prevalence and incidence settings to eliminate MTCT from breastfeeding. Preventive strategies include: pre-exposure prophylaxis in breastfeeding women who have an increased risk of acquiring HIV; postnatal reinforcement strategies, such as maternal retesting for HIV, maternal care reinforcement, and prophylaxis in infants exposed to HIV via breastmilk; and active (vaccine) or passive immunoprophylaxis with long-acting broadly neutralising antibodies.
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Affiliation(s)
- Philippe Van de Perre
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, Etablissement Français du Sang, Antilles University, CHU Montpellier, Montpellier, France.
| | - Ameena Goga
- South African Medical Research Council, Cape Town, South Africa; Department of Paediatrics and Child Health, University of Pretoria, Pretoria, South Africa
| | - Nobubelo Ngandu
- South African Medical Research Council, Cape Town, South Africa
| | - Nicolas Nagot
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, Etablissement Français du Sang, Antilles University, CHU Montpellier, Montpellier, France
| | - Dhayendre Moodley
- Centre for AIDS Research in South Africa, and Department of Obstetrics and Gynaecology, School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Rachel King
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, Etablissement Français du Sang, Antilles University, CHU Montpellier, Montpellier, France; School of Medicine, University of California, San Francisco, CA, USA
| | - Jean-Pierre Molès
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, Etablissement Français du Sang, Antilles University, CHU Montpellier, Montpellier, France
| | - Beatriz Mosqueira
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, Etablissement Français du Sang, Antilles University, CHU Montpellier, Montpellier, France
| | | | - Gabriella Scarlatti
- Viral Evolution and Transmission Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS Ospedale San Raffaele, Milano, Italy
| | | | - François Dabis
- Agence Nationale de Recherche sur le Sida et les Hépatites Virales (ANRS), Paris, France; Bordeaux Population Health, INSERM U 1219, ISPED, Université de Bordeaux, Bordeaux, France
| | - Glenda Gray
- South African Medical Research Council, Cape Town, South Africa
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15
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Semmes EC, Chen JL, Goswami R, Burt TD, Permar SR, Fouda GG. Understanding Early-Life Adaptive Immunity to Guide Interventions for Pediatric Health. Front Immunol 2021; 11:595297. [PMID: 33552052 PMCID: PMC7858666 DOI: 10.3389/fimmu.2020.595297] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 12/04/2020] [Indexed: 01/16/2023] Open
Abstract
Infants are capable of mounting adaptive immune responses, but their ability to develop long-lasting immunity is limited. Understanding the particularities of the neonatal adaptive immune system is therefore critical to guide the design of immune-based interventions, including vaccines, in early life. In this review, we present a thorough summary of T cell, B cell, and humoral immunity in early life and discuss infant adaptive immune responses to pathogens and vaccines. We focus on the differences between T and B cell responses in early life and adulthood, which hinder the generation of long-lasting adaptive immune responses in infancy. We discuss how knowledge of early life adaptive immunity can be applied when developing vaccine strategies for this unique period of immune development. In particular, we emphasize the use of novel vaccine adjuvants and optimization of infant vaccine schedules. We also propose integrating maternal and infant immunization strategies to ensure optimal neonatal protection through passive maternal antibody transfer while avoiding hindering infant vaccine responses. Our review highlights that the infant adaptive immune system is functionally distinct and uniquely regulated compared to later life and that these particularities should be considered when designing interventions to promote pediatric health.
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Affiliation(s)
- Eleanor C. Semmes
- Duke Human Vaccine Institute, Duke University, Durham, NC, United States
- Medical Scientist Training Program, Duke University, Durham, NC, United States
- Children’s Health and Discovery Initiative, Department of Pediatrics, Duke University, Durham, NC, United States
| | - Jui-Lin Chen
- Duke Human Vaccine Institute, Duke University, Durham, NC, United States
| | - Ria Goswami
- Duke Human Vaccine Institute, Duke University, Durham, NC, United States
| | - Trevor D. Burt
- Children’s Health and Discovery Initiative, Department of Pediatrics, Duke University, Durham, NC, United States
- Division of Neonatology, Department of Pediatrics, Duke University, Durham, NC, United States
| | - Sallie R. Permar
- Duke Human Vaccine Institute, Duke University, Durham, NC, United States
- Children’s Health and Discovery Initiative, Department of Pediatrics, Duke University, Durham, NC, United States
| | - Genevieve G. Fouda
- Duke Human Vaccine Institute, Duke University, Durham, NC, United States
- Children’s Health and Discovery Initiative, Department of Pediatrics, Duke University, Durham, NC, United States
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16
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Harnessing early life immunity to develop a pediatric HIV vaccine that can protect through adolescence. PLoS Pathog 2020; 16:e1008983. [PMID: 33180867 PMCID: PMC7660516 DOI: 10.1371/journal.ppat.1008983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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17
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Pediatric HIV: the Potential of Immune Therapeutics to Achieve Viral Remission and Functional Cure. Curr HIV/AIDS Rep 2020; 17:237-248. [PMID: 32356090 DOI: 10.1007/s11904-020-00495-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE OF REVIEW In the absence of antiretroviral therapy (ART), more than 50% of perinatally HIV-infected children die by 2 years of age. Early ART from infancy is therefore a global recommendation and significantly improves immune health, child survival, and disease outcome. However, even early treatment does not prevent or eradicate the latent reservoir necessitating life-long ART. Adherence to life-long ART is challenging for children and longstanding ART during chronic HIV infection led to higher risks of non-AIDS co-morbidities and virologic failure in infected children. Thus, HIV-infected children are an important population for consideration for immune-based interventions to achieve ART-free remission and functional cure. This review summarizes how the uniqueness of the early life immune system can be harnessed for the development of ART-free remission and functional cure, which means complete virus control in absence of ART. In addition, recent advances in therapeutics in the HIV cure field and their potential for the treatment of pediatric HIV infections are discussed. RECENT FINDINGS Preclinical studies and clinical trials demonstrated that immune-based interventions target HIV replication, limit size of virus reservoir, maintain virus suppression, and delay time to virus rebound. However, these studies have been performed so far only in carefully selected HIV-infected adults, highlighting the need to evaluate the efficacy of immune-based therapeutics in HIV-infected children and to design interventions tailored to the early life maturing immune system. Immune-based therapeutics alone or in combination with ART should be actively explored as potential strategies to achieve viral remission and functional cure in HIV-infected pediatric populations.
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18
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Reed SG, Tomai M, Gale MJ. New horizons in adjuvants for vaccine development. Curr Opin Immunol 2020; 65:97-101. [PMID: 33038865 PMCID: PMC7542129 DOI: 10.1016/j.coi.2020.08.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 08/10/2020] [Accepted: 08/23/2020] [Indexed: 02/08/2023]
Abstract
Adjuvant molecules, particularly toll like receptor (TLR) agonists have been in development for decades, though until now only a natural TLR 4 ligand (mono-phosphoryl lipid A, MPL) has been incorporated into licensed vaccine products, in formulations than enhance and complement the MPL activity. The inclusion of MPL-based formulations into vaccines has been based on enhancing antibody responses to subunit antigens, and has provided important proof-of-concept for enhancing desired immune responses to defined molecular targets. Challenges remain in adjuvant development, particularly for those that stimulated effective T cell responses for both preventative and therapeutic vaccines. The discovery of molecules, many based on RNA, that stimulate innate and adaptive immune responses and have the ability to stimulate potent CD8 T cell responses, has opened the door for development of a new generation of vaccines.
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Affiliation(s)
- Steven G Reed
- HDT Bio, Seattle, WA, United States; Center for Innate Immunity and Immune Disease, Department of Immunology, U of Washington School of Medicine, Seattle, WA, United States
| | | | - Michael J Gale
- Center for Innate Immunity and Immune Disease, Department of Immunology, U of Washington School of Medicine, Seattle, WA, United States
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19
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Generation of a Peptide Vaccine Candidate against Falciparum Placental Malaria Based on a Discontinuous Epitope. Vaccines (Basel) 2020; 8:vaccines8030392. [PMID: 32708370 PMCID: PMC7564767 DOI: 10.3390/vaccines8030392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/28/2020] [Accepted: 07/10/2020] [Indexed: 02/06/2023] Open
Abstract
In pregnant women, Plasmodium falciparum-infected red blood cells adhere to the placenta via the parasite protein VAR2CSA. Two vaccine candidates based on VAR2CSA are currently in clinical trials; however, these candidates failed to elicit strain-transcending antibody responses. We previously showed that a cross-reactive monoclonal antibody (3D10) raised against the P. vivax antigen PvDBP targets epitopes in VAR2CSA. We now aim to design a peptide vaccine against VAR2CSA based on the epitope that generated 3D10. We mapped the epitope to subdomain 1 (SD1) of PvDBP and identified a peptide that contained the minimal sequence. However, this peptide did not elicit cross-reactive VAR2CSA antibodies in mice. When tested against a broader, overlapping peptide array spanning SD1, 3D10 in fact recognized a discontinuous epitope consisting of three segments of SD1. These findings presented the challenge to generate this larger structural epitope as a synthetic peptide since it is stabilized by two pairs of disulfide bonds. We overcame this using a synthetic scaffold to conformationally constrain the SD1 peptide and coupled it to keyhole limpet hemocyanin (KLH). The SD1-KLH conjugate elicited antibodies in mice that cross-reacted with VAR2CSA. This strategy successfully recapitulated a discontinuous epitope with a synthetic peptide and represents the first heterologous vaccine candidate against VAR2CSA.
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20
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Fischinger S, Shin S, Boudreau CM, Ackerman M, Rerks-Ngarm S, Pitisuttithum P, Nitayaphan S, Kim JH, Robb ML, Michael NL, O’Connell RJ, Vasan S, Streeck H, Alter G. Protein-based, but not viral vector alone, HIV vaccine boosting drives an IgG1-biased polyfunctional humoral immune response. JCI Insight 2020; 5:135057. [PMID: 32554928 PMCID: PMC7406243 DOI: 10.1172/jci.insight.135057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 05/07/2020] [Indexed: 12/13/2022] Open
Abstract
The RV144 HIV-1 vaccine trial results showed moderate reduction in viral infections among vaccinees as well as induction of antibody-dependent cellular cytotoxicity and vaccine-specific IgG and IgG3 responses directed at variable loop regions 1 and 2 of the HIV envelope protein. However, with the recent failure of the HVTN 702 clinical trial, comprehensive profiling of humoral immune responses may provide insight for these disappointing results. One of the changes included in the HVTN 702 study was the addition of a late boost, aimed at augmenting peak immunity and durability. The companion vaccine trial RV305 was designed to permit the evaluation of the immunologic impact of late boosting with either the boosting protein antigen alone, the canarypox viral vector ALVAC alone, or a combination of both. Although previous data showed elevated levels of IgG antibodies in both boosting arms, regardless of ALVAC-HIV vector incorporation, the effect on shaping antibody effector function remains unclear. Thus, here we analyzed the antibody and functional profile induced by RV305 boosting regimens and found that although IgG1 levels increased in both arms that included protein boosting, IgG3 levels were reduced compared with the original RV144 vaccine strategy. Most functional responses increased upon protein boosting, regardless of the viral vector-priming agent incorporation. These data suggest that the addition of a late protein boost alone is sufficient to increase functionally potent vaccine-specific antibodies previously associated with reduced risk of infection with HIV.
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Affiliation(s)
- Stephanie Fischinger
- Ragon Institute of MGH, Harvard and MGH, Cambridge, Massachusetts, USA
- Institut für HIV Forschung, Universität Duisburg-Essen, Essen, Germany
| | - Sally Shin
- Ragon Institute of MGH, Harvard and MGH, Cambridge, Massachusetts, USA
| | - Carolyn M. Boudreau
- Ragon Institute of MGH, Harvard and MGH, Cambridge, Massachusetts, USA
- PhD Program in Virology, Harvard University, Boston, Massachusetts, USA
| | - Margaret Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USA
| | | | - Punnee Pitisuttithum
- Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | | | - Merlin L. Robb
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Nelson L. Michael
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - 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, Maryland, USA
| | - Sandhya Vasan
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
- US Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | - Hendrik Streeck
- Institut für HIV Forschung, Universität Duisburg-Essen, Essen, Germany
- Institute of Virology, Universitätsklinikum Bonn, Bonn, Germany
| | - Galit Alter
- Ragon Institute of MGH, Harvard and MGH, Cambridge, Massachusetts, USA
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21
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Sepulveda-Crespo D, Resino S, Martinez I. Innate Immune Response against Hepatitis C Virus: Targets for Vaccine Adjuvants. Vaccines (Basel) 2020; 8:vaccines8020313. [PMID: 32560440 PMCID: PMC7350220 DOI: 10.3390/vaccines8020313] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 02/07/2023] Open
Abstract
Despite successful treatments, hepatitis C virus (HCV) infections continue to be a significant world health problem. High treatment costs, the high number of undiagnosed individuals, and the difficulty to access to treatment, particularly in marginalized susceptible populations, make it improbable to achieve the global control of the virus in the absence of an effective preventive vaccine. Current vaccine development is mostly focused on weakly immunogenic subunits, such as surface glycoproteins or non-structural proteins, in the case of HCV. Adjuvants are critical components of vaccine formulations that increase immunogenic performance. As we learn more information about how adjuvants work, it is becoming clear that proper stimulation of innate immunity is crucial to achieving a successful immunization. Several hepatic cell types participate in the early innate immune response and the subsequent inflammation and activation of the adaptive response, principally hepatocytes, and antigen-presenting cells (Kupffer cells, and dendritic cells). Innate pattern recognition receptors on these cells, mainly toll-like receptors, are targets for new promising adjuvants. Moreover, complex adjuvants that stimulate different components of the innate immunity are showing encouraging results and are being incorporated in current vaccines. Recent studies on HCV-vaccine adjuvants have shown that the induction of a strong T- and B-cell immune response might be enhanced by choosing the right adjuvant.
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Affiliation(s)
| | - Salvador Resino
- Correspondence: (S.R.); (I.M.); Tel.: +34-91-8223266 (S.R.); +34-91-8223272 (I.M.); Fax: +34-91-5097919 (S.R. & I.M.)
| | - Isidoro Martinez
- Correspondence: (S.R.); (I.M.); Tel.: +34-91-8223266 (S.R.); +34-91-8223272 (I.M.); Fax: +34-91-5097919 (S.R. & I.M.)
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22
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Hompe ED, Mangold JF, Kumar A, Eudailey JA, McGuire E, Haynes BF, Moody MA, Wright PF, Fouda GG, Giorgi EE, Gao F, Permar SR. Induction of Neutralizing Responses against Autologous Virus in Maternal HIV Vaccine Trials. mSphere 2020; 5:e00254-20. [PMID: 32493720 PMCID: PMC7273346 DOI: 10.1128/msphere.00254-20] [Citation(s) in RCA: 2] [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: 03/19/2020] [Accepted: 05/19/2020] [Indexed: 02/02/2023] Open
Abstract
A maternal vaccine capable of boosting neutralizing antibody (NAb) responses directed against circulating viruses in HIV-infected pregnant women could effectively decrease mother-to-child transmission of HIV. However, it is not known if an HIV envelope (Env) vaccine administered to infected pregnant women could enhance autologous virus neutralization and thereby reduce this risk of vertical HIV transmission. Here, we assessed autologous virus NAb responses in maternal plasma samples obtained from AIDS Vaccine Evaluation Group (AVEG) protocols 104 and 102, representing historical phase I safety and immunogenicity trials of recombinant HIV Env subunit vaccines administered to HIV-infected pregnant women (ClinicalTrials registration no. NCT00001041). Maternal HIV Env-specific plasma binding and neutralizing antibody responses were characterized before and after vaccination in 15 AVEG 104 (n = 10 vaccine recipients, n = 5 placebo recipients) and 2 AVEG 102 (n = 1 vaccine recipient, n = 1 placebo recipient) participants. Single-genome amplification (SGA) was used to obtain HIV env gene sequences of autologous maternal viruses for pseudovirus production and neutralization sensitivity testing in pre- and postvaccination plasma of HIV-infected pregnant vaccine recipients (n = 6 gp120, n = 1 gp160) and placebo recipients (n = 3). We detected an increase in Env subunit MN gp120-specific IgG binding in the group of vaccine recipients between the first immunization visit and the last visit at delivery (P = 0.027, 2-sided Wilcoxon test). While no difference was observed in the levels of autologous virus neutralization potency between groups, in both groups maternal plasma collected at delivery more effectively neutralized autologous viruses from early pregnancy than late pregnancy. Immunization strategies capable of further enhancing these autologous virus NAb responses in pregnant women will be important to block vertical transmission of HIV.IMPORTANCE Maternal antiretroviral therapy (ART) has effectively reduced but not eliminated the burden of mother-to-child transmission of HIV across the globe, as an estimated 160,000 children were newly infected with HIV in 2018. Thus, additional preventive strategies beyond ART will be required to close the remaining gap and end the pediatric HIV epidemic. A maternal active immunization strategy that synergizes with maternal ART could further reduce infant HIV infections. In this study, we found that two historic HIV Env vaccines did not enhance the ability of HIV-infected pregnant women to neutralize autologous viruses. Therefore, next-generation maternal HIV vaccine candidates must employ alternate approaches to achieve potent neutralizing antibody and perhaps nonneutralizing antibody responses to effectively impede vertical virus transmission. Moreover, these approaches must reflect the broad diversity of HIV strains and widespread availability of ART worldwide.
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Affiliation(s)
- Eliza D Hompe
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Jesse F Mangold
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Amit Kumar
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Joshua A Eudailey
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Erin McGuire
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Barton F Haynes
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - M Anthony Moody
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
- Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
| | - Peter F Wright
- Department of Pediatrics, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Genevieve G Fouda
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
- Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
| | - Elena E Giorgi
- Los Alamos National Laboratory, Los Alamos, New Mexico, USA
| | - Feng Gao
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Sallie R Permar
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
- Department of Pediatrics, Duke University Medical Center, Durham, North Carolina, USA
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23
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HIV Env-Specific IgG Antibodies Induced by Vaccination of Neonatal Rhesus Macaques Persist and Can Be Augmented by a Late Booster Immunization in Infancy. mSphere 2020; 5:5/2/e00162-20. [PMID: 32213623 PMCID: PMC7096624 DOI: 10.1128/msphere.00162-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The HIV epidemics in infants and adolescent women are linked. Young women of childbearing age are at high risk for HIV infection and, due to poor HIV testing rates and low adherence to antiretroviral therapy, are at high risk for mother-to-infant transmission. We hypothesize that HIV vaccine regimens initiated in early life would provide the necessary time frame to induce mature and highly functional Env-specific antibody responses that could potentially also protect against HIV acquisition later in life. The present study was designed to test two vaccine regimens, a clade C HIV Env protein vaccine (Env only) alone or combined with a modified vaccinia Ankara (MVA) vector expressing HIV Env (MVA/Env) for the induction and persistence of Env-specific antibody responses in an infant nonhuman primate model. Vaccination was initiated within the first week of life, with booster immunizations at weeks 6, 12, and 32. We demonstrate that both vaccine strategies were able to elicit durable Env-specific antibody responses that were enhanced by a late boost in infancy. Furthermore, we confirmed earlier data that intramuscular administration of the Env protein with the Toll-like receptor 7/8 (TLR7/8)-based adjuvant 3M-052 in stable emulsion (3M-052-SE) induced higher Env-specific antibody responses than vaccination with Env adjuvanted in Span85-Tween 80-squalene (STS) tested in a previous study. These results support the concept of early vaccination as a means to induce durable immune responses that may prevent HIV infection in adolescence at the onset of sexual debut.IMPORTANCE The majority of new HIV-1 infections occur in young adults, with adolescent women being 3 times more likely to acquire HIV than young men. Implementation of HIV prevention strategies has been less successful in this age group; thus, a vaccine given prior to adolescence remains a high priority. We propose that instead of starting HIV vaccination during adolescence, an HIV vaccine regimen initiated in early infancy, aligned with the well-accepted pediatric vaccine schedule and followed with booster immunizations, will provide an alternative means to reduce HIV acquisition in adolescence. Importantly, the long window of time between the first infant vaccine dose and the adolescence vaccine dose will allow for the maturation of highly functional HIV Env-specific antibody responses. Our study provides evidence that early life vaccination induces durable Env-specific plasma IgG responses that can be boosted to further improve the quality of the antibody response.
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24
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Yenkoidiok-Douti L, Jewell CM. Integrating Biomaterials and Immunology to Improve Vaccines Against Infectious Diseases. ACS Biomater Sci Eng 2020; 6:759-778. [PMID: 33313391 PMCID: PMC7725244 DOI: 10.1021/acsbiomaterials.9b01255] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Despite the success of vaccines in preventing many infectious diseases, effective vaccines against pathogens with ongoing challenges - such as HIV, malaria, and tuberculosis - remain unavailable. The emergence of new pathogen variants, the continued prevalence of existing pathogens, and the resurgence of yet other infectious agents motivate the need for new, interdisciplinary approaches to direct immune responses. Many current and candidate vaccines, for example, are poorly immunogenic, provide only transient protection, or create risks of regaining pathogenicity in certain immune-compromised conditions. Recent advances in biomaterials research are creating new potential to overcome these challenges through improved formulation, delivery, and control of immune signaling. At the same time, many of these materials systems - such as polymers, lipids, and self-assembly technologies - may achieve this goal while maintaining favorable safety profiles. This review highlights ways in which biomaterials can advance existing vaccines to safer, more efficacious technologies, and support new vaccines for pathogens that do not yet have vaccines. Biomaterials that have not yet been applied to vaccines for infectious disease are also discussed, and their potential in this area is highlighted.
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Affiliation(s)
- Lampouguin Yenkoidiok-Douti
- Fischell Department of Bioengineering, University of Maryland, College Park, 8278 Paint Branch Drive, College Park, MD, 20742, United States
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institute of Health, Rockville, MD, 20852, United States
| | - Christopher M. Jewell
- Fischell Department of Bioengineering, University of Maryland, College Park, 8278 Paint Branch Drive, College Park, MD, 20742, United States
- Department of Veterans Affairs, VA Maryland Health Care System, 10. N Green Street, Baltimore, MD 21201, USA
- Robert E. Fischell Institute for Biomedical Devices, 8278 Paint Branch Drive, College Park, MD 20742, United States
- Department of Microbiology and Immunology, University of Maryland Medical School, 685 West Baltimore Street, HSF-I Suite 380, Baltimore, MD, 21201, United States
- Marlene and Stewart Greenebaum Cancer Center, 22 S. Greene Street, Suite N9E17, Baltimore, MD 21201, United States
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25
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Abstract
PURPOSE OF REVIEW The gradual replacement of inactivated whole cell and live attenuated vaccines with subunit vaccines has generally reduced reactogenicity but in many cases also immunogenicity. Although only used when necessary, adjuvants can be key to vaccine dose/antigen-sparing, broadening immune responses to variable antigens, and enhancing immunogenicity in vulnerable populations with distinct immunity. Licensed vaccines contain an increasing variety of adjuvants, with a growing pipeline of adjuvanted vaccines under development. RECENT FINDINGS Most adjuvants, including Alum, Toll-like receptor agonists and oil-in-water emulsions, activate innate immunity thereby altering the quantity and quality of an adaptive immune response. Adjuvants activate leukocytes, and induce mediators (e.g., cytokines, chemokines, and prostaglandin-E2) some of which are biomarkers for reactogenicity, that is, induction of local/systemic side effects. Although there have been safety concerns regarding a hypothetical risk of adjuvants inducing auto-immunity, such associations have not been established. As immune responses vary by population (e.g., age and sex), adjuvant research now incorporates principles of precision medicine. Innovations in adjuvant research include use of human in vitro models, immuno-engineering, novel delivery systems, and systems biology to identify biomarkers of safety and adjuvanticity. SUMMARY Adjuvants enhance vaccine immunogenicity and can be associated with reactogenicity. Novel multidisciplinary approaches hold promise to accelerate and de-risk targeted adjuvant discovery and development. VIDEO ABSTRACT: http://links.lww.com/MOP/A53.
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Affiliation(s)
- Etsuro Nanishi
- Precision Vaccines Program
- Division of Infectious Diseases, Boston Children's Hospital
- Harvard Medical School, Boston
| | - David J. Dowling
- Precision Vaccines Program
- Division of Infectious Diseases, Boston Children's Hospital
- Harvard Medical School, Boston
| | - Ofer Levy
- Precision Vaccines Program
- Division of Infectious Diseases, Boston Children's Hospital
- Harvard Medical School, Boston
- Broad Institute of MIT & Harvard, Cambridge, Massachusetts, USA
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26
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Khandhar AP, Liang H, Simpson AC, Reed SG, Carter D, Fox CB, Orr MT. Physicochemical structure of a polyacrylic acid stabilized nanoparticle alum (nanoalum) adjuvant governs TH1 differentiation of CD4+ T cells. NANOSCALE 2020; 12:2515-2523. [PMID: 31930264 DOI: 10.1039/c9nr09936k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The growing shift to subunit antigen vaccines underscores the need for adjuvants that can enhance the magnitude and quality of immune response. Aluminum salts or alums are the first adjuvants with a long history of clinical use. Alum predominantly induces T helper 2 (TH2) type immunity in animal models, characterized by antibody production with little to no induction of antigen-specific T cells. The lack of cell-mediated or T helper 1 (TH1) immunity makes alum adjuvants ineffective in mounting durable responses against diseases like tuberculosis, malaria and HIV. Here we show that the clinically approved adjuvant, Alhydrogel, reformulated as a stable nanoparticle (nanoalum) with the anionic polymer polyacrylic acid (PAA) induces structure-dependent TH1 response against the recombinant tuberculosis antigen ID93. We found that PAA adsorption to Alhydrogel was a key parameter affecting nanoalum adjuvanticity. Adsorption depended on various factors, most notably formulation pH, and directly correlated with immunological response in mice, enhancing known hallmarks of a murine TH1 type response: induction of antigen-specific IFN-γ secreting CD4+ T cells and IgG2c subclass of antibodies. Our results demonstrate a correlation between a measurable nanoalum property and immunological response, providing a structural basis to derive a beneficial immunological outcome from a clinically approved adjuvant.
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Affiliation(s)
- Amit P Khandhar
- Infectious Disease Research Institute, Seattle, WA, USA. and PAI Life Sciences, Seattle, WA, USA
| | - Hong Liang
- Infectious Disease Research Institute, Seattle, WA, USA.
| | | | - Steven G Reed
- Infectious Disease Research Institute, Seattle, WA, USA. and Department of Global Health, University of Washington, Seattle, WA, USA and HDT BioCorp, Seattle, WA, USA
| | - Darrick Carter
- Infectious Disease Research Institute, Seattle, WA, USA. and PAI Life Sciences, Seattle, WA, USA and Department of Global Health, University of Washington, Seattle, WA, USA
| | - Christopher B Fox
- Infectious Disease Research Institute, Seattle, WA, USA. and Department of Global Health, University of Washington, Seattle, WA, USA
| | - Mark T Orr
- Infectious Disease Research Institute, Seattle, WA, USA.
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Fouda GG, De Paris K, Levy O, Marchant A, Gray G, Permar S, Marovich M, Singh A. Immunological mechanisms of inducing HIV immunity in infants. Vaccine 2019; 38:411-415. [PMID: 31761501 DOI: 10.1016/j.vaccine.2019.11.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/01/2019] [Accepted: 11/05/2019] [Indexed: 12/18/2022]
Abstract
The potential advantages and unique challenges of the early life immune system for the development of HIV-specific broadly neutralizing antibodies were discussed during a workshop entitled "Immunological Mechanisms of Inducing HIV Immunity in Infants" sponsored by the National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH) in conjunction with the 2018 HIVR4P Conference held in Madrid, Spain. A safe and effective HIV vaccine remains a critical need in the fight against the HIV pandemic, especially to prevent emerging infections in infants, adolescents, and young adults. To successfully target these populations, a vaccine should ideally induce protective immune responses during childhood. Interestingly, several recent studies highlighting differences in immune responses between adults and children have suggested that the early life immune system could present advantages for the elicitation of broadly neutralizing antibodies (bnAbs), a response highly desired for an HIV vaccine. Notably, HIV-infected children develop bnAbs responses earlier and more frequently than infected adults; with emerging evidence that the pathways of elicitation of bnAb lineages may differ between adults and children. Moreover, there is precedent for the prevention of lifelong infections with pediatric immunization, and early life provides a unique window of opportunity for the administration of a multi-dose HIV vaccine that will likely be needed to achieve protective immunity. Further understanding of how the distinct early life immune system can be harnessed to trigger bnAb lineages for induction of durable and polyfunctional HIV-specific immunity is warranted. This strategy will include testing promising HIV vaccine candidates in pediatric populations in preclinical and clinical studies. Novel approaches to identify molecular markers of protection are also key to guide and accelerate pediatric HIV vaccine development.
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Affiliation(s)
- Genevieve G Fouda
- Department of Pediatrics, Duke University Medical School, Durham, NC, USA; Human Vaccine Institute, Duke University Medical School, Durham, NC, USA.
| | - Kristina De Paris
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC, USA
| | - Ofer Levy
- Precision Vaccines Program, Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard University, Cambridge, MA, USA
| | - Arnaud Marchant
- Institute for Medical Immunology, Université libre de Bruxelles, Charleroi B-6041, Belgium
| | - Glenda Gray
- Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, South Africa
| | - Sallie Permar
- Department of Pediatrics, Duke University Medical School, Durham, NC, USA; Human Vaccine Institute, Duke University Medical School, Durham, NC, USA
| | - Mary Marovich
- Vaccine Research Program, Division of AIDS, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Anjali Singh
- Vaccine Research Program, Division of AIDS, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
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28
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AIDS Vaccine Research Subcommittee (AVRS) Consultation: Early-Life Immunization Strategies against HIV Acquisition. mSphere 2019; 4:4/4/e00320-19. [PMID: 31315966 PMCID: PMC6637046 DOI: 10.1128/msphere.00320-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This report summarizes a consultation meeting convened by the National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), on 12 September 2017 to discuss the scientific rationale for selectively testing relevant HIV vaccine candidates in early life that are designed to initiate immune responses for lifelong protective immunity. The urgent need to develop interventions providing durable protective immunity to HIV before sexual debut coupled with the practicality of infant vaccine schedules supports optimizing infant HIV vaccines as a high priority. The panelists discussed the unique opportunities and challenges of testing candidate HIV vaccines in the context of distinct early-life immunity. Key developments providing rationale and grounds for cautious optimism regarding evaluation of early-life HIV vaccines include recent studies of early-life immune ontogeny, studies of HIV-infected infants demonstrating relatively rapid generation of broadly neutralizing antibodies (bNAbs), discovery of novel adjuvants active in early life, and cutting-edge sample-sparing systems biology and immunologic assays promising deep insight into vaccine action in infants. Multidisciplinary efforts toward the goal of an infant HIV vaccine are under way and should be nurtured and amplified.IMPORTANCE Young adults represent one of the highest-risk groups for new HIV infections and the only group in which morbidity continues to increase. Therefore, an HIV vaccine to prevent HIV acquisition in adolescence is a top priority. The introduction of any vaccine during adolescence is challenging. This meeting discussed the opportunities and challenges of testing HIV vaccine candidates in the context of the infant immune system given recent advances in our knowledge of immune ontogeny and adjuvant design and studies demonstrating that HIV-infected infants generate broadly neutralizing antibodies, a main target of HIV vaccines, more rapidly than adults. Considering the global success of pediatric vaccines, the concept of an HIV vaccine introduced in early life holds merit and warrants testing.
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Neutralization of rhesus cytomegalovirus IL-10 reduces horizontal transmission and alters long-term immunity. Proc Natl Acad Sci U S A 2019; 116:13036-13041. [PMID: 31189602 DOI: 10.1073/pnas.1903317116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Human cytomegalovirus (HCMV) causes severe disease in infants and immunocompromised people. There is no approved HCMV vaccine, and vaccine development strategies are complicated by evidence of both persistent infection and reinfection of people with prior immunity. The greatest emphasis has been placed on reducing transmission to seronegative pregnant women to prevent vertical transmission and its potentially severe sequelae. Increasing evidence suggests that the earliest host-HCMV interactions establish conditions for viral persistence, including evasion of host immune responses to the virus. Using a nonhuman primate model of HCMV infection, we show that rhesus macaques immunized against viral interleukin-10 (IL-10) manifest delayed rhesus cytomegalovirus (RhCMV) acquisition and altered immune responses to the infection when it does occur. Among animals with the greatest antiviral IL-10-neutralizing activity, the timing of RhCMV seroconversion was delayed by an average of 12 weeks. After acquisition, such animals displayed an antibody response to the new infection, which peaked as expected after 2 weeks but then declined rapidly. In contrast, surprisingly, vaccination with glycoprotein B (gB) protein had no discernible impact on these outcomes. Our results demonstrate that viral IL-10 is a key regulator of successful host immune responses to RhCMV. Viral IL-10 is, therefore, an important target for vaccine strategies against cytomegalovirus (CMV). Furthermore, given the immunoregulatory function of viral IL-10, targeting this protein may prove synergistic with other vaccine therapies and targets. Our study also provides additional evidence that the earliest host-CMV interactions can have a significant impact on the nature of persistent infection.
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Georg P, Sander LE. Innate sensors that regulate vaccine responses. Curr Opin Immunol 2019; 59:31-41. [PMID: 30978666 DOI: 10.1016/j.coi.2019.02.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/07/2019] [Accepted: 02/22/2019] [Indexed: 02/08/2023]
Abstract
Pattern recognition receptors (PRRs) control elemental functions of antigen presenting cells (APCs) and critically shape adaptive immune responses. Wielding a natural adjuvanticity, live attenuated vaccines elicit exceptionally efficient and durable immunity. Commonly used vaccine adjuvants target individual PRRs or bolster the immunogenicity of vaccines via indirect mechanisms of inflammation. Here, we review the impact of innate sensors on immune responses to live attenuated vaccines and commonly used vaccine adjuvants, with a focus on human vaccine responses. We discuss the unique potential of microbial nucleic acids and their corresponding sensing receptors to mimic live attenuated vaccines and promote protective immunity.
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Affiliation(s)
- Philipp Georg
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Leif E Sander
- Department of Infectious Diseases and Pulmonary Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
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31
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Curtis AD, Walter KA, Nabi R, Jensen K, Dwivedi A, Pollara J, Ferrari G, Van Rompay KK, Amara RR, Kozlowski PA, De Paris K. Oral Coadministration of an Intramuscular DNA/Modified Vaccinia Ankara Vaccine for Simian Immunodeficiency Virus Is Associated with Better Control of Infection in Orally Exposed Infant Macaques. AIDS Res Hum Retroviruses 2019; 35:310-325. [PMID: 30303405 PMCID: PMC6434602 DOI: 10.1089/aid.2018.0180] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The majority of human immunodeficiency virus (HIV) type 1 infections in infants are acquired orally through breastfeeding. Toward development of a pediatric HIV vaccine to prevent breastmilk transmission, we tested the efficacy of a simultaneous oral and intramuscular (IM) vaccination regimen for preventing oral simian immunodeficiency virus (SIV) transmission in infant rhesus macaques. Two groups of neonatal macaques were immunized with DNA encoding SIV virus-like particles (DNA-SIV) on weeks 0 and 3, then boosted with modified vaccinia Ankara (MVA) virus expressing SIV antigens (MVA-SIV) on weeks 6 and 9. One group was prime/boosted by the IM route only. Another group was immunized with DNA by both the IM and topical oral (O) buccal routes, and boosted with MVA-SIV by both the IM and sublingual (SL) routes. A third group of control animals received saline by O + IM routes on weeks 0 and 3, and empty MVA by SL + IM routes on weeks 6 and 9. On week 12, infants were orally challenged once weekly with SIVmac251 until infected. The vaccine regimen that included oral routes resulted in reduced peak viremia. The rate of infection acquisition in vaccinated infants was found to be associated with prechallenge intestinal immunoglobulin G (IgG) responses to SIV gp120 and V1V2. Peak viremia was inversely correlated with postinfection intestinal IgG responses to gp120, gp41, and V1V2. These results suggest that codelivery of a pediatric HIV vaccine by an oral route may be superior to IM-only regimens for generating mucosal antibodies and preventing HIV breastmilk transmission in neonates.
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Affiliation(s)
- Alan D. Curtis
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Korey A. Walter
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University, New Orleans, Louisiana
| | - Rafiq Nabi
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University, New Orleans, Louisiana
| | - Kara Jensen
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Aanini Dwivedi
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Justin Pollara
- Duke University Medical Center, Human Vaccine Institute, Durham, North Carolina
| | - Guido Ferrari
- Duke University Medical Center, Human Vaccine Institute, Durham, North Carolina
| | | | - Rama R. Amara
- Emory University and Yerkes National Primate Research Center, Atlanta, Georgia
| | - Pamela A. Kozlowski
- Department of Microbiology, Immunology, and Parasitology, Louisiana State University, New Orleans, Louisiana
| | - Kristina De Paris
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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Coadministration of CH31 Broadly Neutralizing Antibody Does Not Affect Development of Vaccine-Induced Anti-HIV-1 Envelope Antibody Responses in Infant Rhesus Macaques. J Virol 2019; 93:JVI.01783-18. [PMID: 30541851 DOI: 10.1128/jvi.01783-18] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/03/2018] [Indexed: 12/15/2022] Open
Abstract
Prevention of mother-to-child transmission (MTCT) is an indispensable component in combatting the global AIDS epidemic. A combination of passive broadly neutralizing antibody (bnAb) infusion and active vaccination promises to provide protection of infants against MTCT from birth through the breastfeeding period and could prime the immune system for lifelong immunity. In this study, we investigate the impact of a single infusion of CD4 binding site (CD4bs) bnAb administered at birth on de novo antibody responses elicited by concurrent active HIV envelope vaccination. Four groups of infant macaques received active immunizations with subunit Env protein or modified vaccinia Ankara (MVA)-vectored Env and subunit Env protein, with or without a single intravenous coadministration of CH31 bnAb at birth. Vaccinated animals were monitored to evaluate binding and functional antibody responses elicited by the active vaccinations. Despite achieving plasma concentrations that were able to neutralize tier 2 viruses, coadministration of CH31 did not have a large impact on the kinetics, magnitude, specificity, or avidity of vaccine-elicited binding or functional antibody responses, including epitope specificity, the development of CD4bs antibodies, neutralization, binding to infected cells, or antibody-dependent cell-mediated cytotoxicity (ADCC). We conclude that infusion of CD4bs bnAb CH31 at birth does not interfere with de novo antibody responses to active vaccination and that a combination of passive bnAb infusion and active HIV-1 Env vaccination is a viable strategy for immediate and prolonged protection against MTCT.IMPORTANCE Our study is the first to evaluate the impact of passive infusion of a broadly neutralizing antibody in newborns on the de novo development of antibody responses following active vaccinations in infancy. We demonstrated the safety and the feasibility of bnAb administration to achieve biologically relevant levels of the antibody and showed that the passive infusion did not impair the de novo antibody production following HIV-1 Env vaccination. Our study paves the way for further investigations of the combination strategy using passive plus active immunization to provide protection of infants born to HIV-1-positive mothers over the entire period of risk for mother-to-child transmission.
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