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Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development

Passive administration of broadly neutralizing antibodies (bNAbs) capable of recognizing a broad range of viral strains to non-human primates has led to protection from infection with chimeric SIV/HIV virus (SHIV). This data suggests that generating protective antibody responses could be an effectiv...

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Autores principales: Niessl, Julia, Kaufmann, Daniel E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6024737/
https://www.ncbi.nlm.nih.gov/pubmed/29921828
http://dx.doi.org/10.3390/v10060336
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author Niessl, Julia
Kaufmann, Daniel E.
author_facet Niessl, Julia
Kaufmann, Daniel E.
author_sort Niessl, Julia
collection PubMed
description Passive administration of broadly neutralizing antibodies (bNAbs) capable of recognizing a broad range of viral strains to non-human primates has led to protection from infection with chimeric SIV/HIV virus (SHIV). This data suggests that generating protective antibody responses could be an effective strategy for an HIV vaccine. However, classic vaccine approaches have failed so far to induce such protective antibodies in HIV vaccine trials. HIV-specific bNAbs identified in natural infection show high levels of somatic hypermutations, demonstrating that they underwent extensive affinity maturation. It is likely that to gain ability to recognize diverse viral strains, vaccine-induced humoral responses will also require complex, iterative maturation. T follicular helper cells (Tfh) are a specialized CD4+ T cell subset that provides help to B cells in the germinal center for the generation of high-affinity and long-lasting humoral responses. It is therefore probable that the quality and quantity of Tfh responses upon vaccination will impact development of bNAbs. Here, we review studies that advanced our understanding of Tfh differentiation, function and regulation. We discuss correlates of Tfh responses and bNAb development in natural HIV infection. Finally, we highlight recent strategies to optimize Tfh responses upon vaccination and their impact on prophylactic HIV vaccine research.
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spelling pubmed-60247372018-07-16 Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development Niessl, Julia Kaufmann, Daniel E. Viruses Review Passive administration of broadly neutralizing antibodies (bNAbs) capable of recognizing a broad range of viral strains to non-human primates has led to protection from infection with chimeric SIV/HIV virus (SHIV). This data suggests that generating protective antibody responses could be an effective strategy for an HIV vaccine. However, classic vaccine approaches have failed so far to induce such protective antibodies in HIV vaccine trials. HIV-specific bNAbs identified in natural infection show high levels of somatic hypermutations, demonstrating that they underwent extensive affinity maturation. It is likely that to gain ability to recognize diverse viral strains, vaccine-induced humoral responses will also require complex, iterative maturation. T follicular helper cells (Tfh) are a specialized CD4+ T cell subset that provides help to B cells in the germinal center for the generation of high-affinity and long-lasting humoral responses. It is therefore probable that the quality and quantity of Tfh responses upon vaccination will impact development of bNAbs. Here, we review studies that advanced our understanding of Tfh differentiation, function and regulation. We discuss correlates of Tfh responses and bNAb development in natural HIV infection. Finally, we highlight recent strategies to optimize Tfh responses upon vaccination and their impact on prophylactic HIV vaccine research. MDPI 2018-06-19 /pmc/articles/PMC6024737/ /pubmed/29921828 http://dx.doi.org/10.3390/v10060336 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Niessl, Julia
Kaufmann, Daniel E.
Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development
title Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development
title_full Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development
title_fullStr Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development
title_full_unstemmed Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development
title_short Harnessing T Follicular Helper Cell Responses for HIV Vaccine Development
title_sort harnessing t follicular helper cell responses for hiv vaccine development
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6024737/
https://www.ncbi.nlm.nih.gov/pubmed/29921828
http://dx.doi.org/10.3390/v10060336
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