Anti-HIV potency of T-cell responses elicited by dendritic cell therapeutic vaccination

Autoři: Mathieu Surenaud aff001;  Monica Montes aff002;  Cecilia S. Lindestam Arlehamn aff003;  Alessandro Sette aff003;  Jacques Banchereau aff002;  Karolina Palucka aff002;  Jean-Daniel Lelièvre aff001;  Christine Lacabaratz aff001;  Yves Lévy aff001
Působiště autorů: Vaccine Research Institute, INSERM U955—Université Paris-Est Créteil, Créteil, France aff001;  Baylor Institute for Immunology Research, Center for Human Vaccines, Dallas TX, United States of America aff002;  La Jolla Institute for Immunology, Department of Vaccine Discovery, La Jolla, California, United States of America aff003;  University of California San Diego, Department of Medicine, La Jolla, California, United States of America aff004;  Assistance Publique-Hôpitaux de Paris, Groupe Henri-Mondor Albert-Chenevier, Service d’Immunologie Clinique, Créteil, France aff005
Vyšlo v časopise: Anti-HIV potency of T-cell responses elicited by dendritic cell therapeutic vaccination. PLoS Pathog 15(9): e32767. doi:10.1371/journal.ppat.1008011
Kategorie: Research Article
doi: 10.1371/journal.ppat.1008011


Identification and characterization of CD8+ and CD4+ T-cell epitopes elicited by HIV therapeutic vaccination is key for elucidating the nature of protective cellular responses and mechanism of the immune evasion of HIV. Here, we report the characterization of HIV-specific T-cell responses in cART (combination antiretroviral therapy) treated HIV-1 infected patients after vaccination with ex vivo-generated IFNα Dendritic Cells (DCs) loaded with LIPO-5 (HIV-1 Nef 66–97, Nef 116–145, Gag 17–35, Gag 253–284 and Pol 325–355 lipopeptides). Vaccination induced and/or expanded HIV-specific CD8+ T cells producing IFNγ, perforin, granzyme A and granzyme B, and also CD4+ T cells secreting IFNγ, IL-2 and IL-13. These responses were directed against dominant and subdominant epitopes representing all vaccine regions; Gag, Pol and Nef. Interestingly, IL-2 and IL-13 produced by CD4+ T cells were negatively correlated with the peak of viral replication following analytic treatment interruption (ATI). Epitope mapping confirmed that vaccination elicited responses against predicted T-cell epitopes, but also allowed to identify a set of 8 new HIV-1 HLA-DR-restricted CD4+ T-cell epitopes. These results may help to better design future DC therapeutic vaccines and underscore the role of vaccine-elicited CD4+ T-cell responses to achieve control of HIV replication.

Klíčová slova:

Biology and life sciences – Cell biology – Cellular types – Animal cells – Blood cells – White blood cells – T cells – Cytotoxic T cells – Immune cells – Vaccination and immunization – Microbiology – Medical microbiology – Microbial pathogens – Viral pathogens – Immunodeficiency viruses – HIV – HIV-1 – Retroviruses – Lentivirus – Organisms – Viruses – RNA viruses – Physiology – Developmental biology – Molecular development – Medicine and health sciences – Immunology – Immune system – Innate immune system – Cytokines – Immune response – Pathology and laboratory medicine – Pathogens – Public and occupational health – Preventive medicine – Immune physiology – Infectious diseases – Infectious disease control – Vaccines


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