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Blasi M, Negri D, LaBranche C, Alam SM, Baker EJ, Brunner EC, Gladden MA, Michelini Z, Vandergrift NA, Wiehe KJ, Parks R, Shen X, Bonsignori M, Tomaras GD, Ferrari G, Montefiori DC, Santra S, Haynes BF, Moody MA, Cara A, Klotman ME. IDLV-HIV-1 Env vaccination in non-human primates induces affinity maturation of antigen-specific memory B cells. Commun Biol 2018; 1:134. [PMID: 30272013 PMCID: PMC6125466 DOI: 10.1038/s42003-018-0131-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 08/06/2018] [Indexed: 01/21/2023] Open
Abstract
HIV continues to be a major global health issue. In spite of successful prevention interventions and treatment methods, the development of an HIV vaccine remains a major priority for the field and would be the optimal strategy to prevent new infections. We showed previously that a single immunization with a SIV-based integrase-defective lentiviral vector (IDLV) expressing the 1086.C HIV-1-envelope induced durable, high-magnitude immune responses in non-human primates (NHPs). In this study, we have further characterized the humoral responses by assessing antibody affinity maturation and antigen-specific memory B-cell persistence in two vaccinated macaques. These animals were also boosted with IDLV expressing the heterologous 1176.C HIV-1-Env to determine if neutralization breadth could be increased, followed by evaluation of the injection sites to assess IDLV persistence. IDLV-Env immunization was associated with persistence of the vector DNA for up to 6 months post immunization and affinity maturation of antigen-specific memory B cells. Maria Blasi et al. report the anti-HIV-1 humoral response elicited in rhesus macaques following vaccination with an SIV-based integrase-defective lentiviral vector (IDLV). They find that a single IDLV-Env immunization induces continuous antibody avidity maturation and boosting with a heterologous HIV-1 Env results in lower peak antibody titers than autologous boost.
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Affiliation(s)
- Maria Blasi
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA. .,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA.
| | - Donatella Negri
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA.,Istituto Superiore di Sanità, Rome, 00161, Italy
| | - Celia LaBranche
- Department of Surgery, Duke University Medical Center, Durham, 27710, NC, USA
| | - S Munir Alam
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA.,Department of Pathology, Duke University Medical Center, Durham, 27710, NC, USA
| | - Erich J Baker
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Elizabeth C Brunner
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Morgan A Gladden
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | | | - Nathan A Vandergrift
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Kevin J Wiehe
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Robert Parks
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Xiaoying Shen
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Mattia Bonsignori
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Georgia D Tomaras
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA.,Department of Surgery, Duke University Medical Center, Durham, 27710, NC, USA
| | - Guido Ferrari
- Department of Surgery, Duke University Medical Center, Durham, 27710, NC, USA
| | - David C Montefiori
- Department of Surgery, Duke University Medical Center, Durham, 27710, NC, USA
| | - Sampa Santra
- Beth Israel Deaconess Medical Center, Boston, 02215, MA, USA
| | - Barton F Haynes
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA.,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA
| | - Michael A Moody
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA.,Department of Pediatrics, Duke University Medical Center, Durham, 27710, NC, USA
| | - Andrea Cara
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA. .,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA. .,Istituto Superiore di Sanità, Rome, 00161, Italy.
| | - Mary E Klotman
- Department of Medicine, Duke University Medical Center, Durham, 27710, NC, USA. .,Duke Human Vaccine Institute, Duke University Medical Center, Durham, 27710, NC, USA.
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