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Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection

Human and simian immunodeficiency viruses (HIV and SIV) exploit follicular lymphoid regions by establishing high levels of viral replication and dysregulating humoral immunity. Follicular regulatory T cells (T(FR)) are a recently characterized subset of lymphocytes that influence the germinal centre...

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Autores principales: Miles, Brodie, Miller, Shannon M., Folkvord, Joy M., Kimball, Abigail, Chamanian, Mastooreh, Meditz, Amie L., Arends, Tessa, McCarter, Martin D., Levy, David N., Rakasz, Eva G., Skinner, Pamela J., Connick, Elizabeth
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4616158/
https://www.ncbi.nlm.nih.gov/pubmed/26482032
http://dx.doi.org/10.1038/ncomms9608
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author Miles, Brodie
Miller, Shannon M.
Folkvord, Joy M.
Kimball, Abigail
Chamanian, Mastooreh
Meditz, Amie L.
Arends, Tessa
McCarter, Martin D.
Levy, David N.
Rakasz, Eva G.
Skinner, Pamela J.
Connick, Elizabeth
author_facet Miles, Brodie
Miller, Shannon M.
Folkvord, Joy M.
Kimball, Abigail
Chamanian, Mastooreh
Meditz, Amie L.
Arends, Tessa
McCarter, Martin D.
Levy, David N.
Rakasz, Eva G.
Skinner, Pamela J.
Connick, Elizabeth
author_sort Miles, Brodie
collection PubMed
description Human and simian immunodeficiency viruses (HIV and SIV) exploit follicular lymphoid regions by establishing high levels of viral replication and dysregulating humoral immunity. Follicular regulatory T cells (T(FR)) are a recently characterized subset of lymphocytes that influence the germinal centre response through interactions with follicular helper T cells (T(FH)). Here, utilizing both human and rhesus macaque models, we show the impact of HIV and SIV infection on T(FR) number and function. We find that T(FR) proportionately and numerically expand during infection through mechanisms involving viral entry and replication, TGF-β signalling, low apoptosis rates and the presence of regulatory dendritic cells. Further, T(FR) exhibit elevated regulatory phenotypes and impair T(FH) functions during HIV infection. Thus, T(FR) contribute to inefficient germinal centre responses and inhibit HIV and SIV clearance.
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spelling pubmed-46161582015-11-25 Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection Miles, Brodie Miller, Shannon M. Folkvord, Joy M. Kimball, Abigail Chamanian, Mastooreh Meditz, Amie L. Arends, Tessa McCarter, Martin D. Levy, David N. Rakasz, Eva G. Skinner, Pamela J. Connick, Elizabeth Nat Commun Article Human and simian immunodeficiency viruses (HIV and SIV) exploit follicular lymphoid regions by establishing high levels of viral replication and dysregulating humoral immunity. Follicular regulatory T cells (T(FR)) are a recently characterized subset of lymphocytes that influence the germinal centre response through interactions with follicular helper T cells (T(FH)). Here, utilizing both human and rhesus macaque models, we show the impact of HIV and SIV infection on T(FR) number and function. We find that T(FR) proportionately and numerically expand during infection through mechanisms involving viral entry and replication, TGF-β signalling, low apoptosis rates and the presence of regulatory dendritic cells. Further, T(FR) exhibit elevated regulatory phenotypes and impair T(FH) functions during HIV infection. Thus, T(FR) contribute to inefficient germinal centre responses and inhibit HIV and SIV clearance. Nature Pub. Group 2015-10-20 /pmc/articles/PMC4616158/ /pubmed/26482032 http://dx.doi.org/10.1038/ncomms9608 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Miles, Brodie
Miller, Shannon M.
Folkvord, Joy M.
Kimball, Abigail
Chamanian, Mastooreh
Meditz, Amie L.
Arends, Tessa
McCarter, Martin D.
Levy, David N.
Rakasz, Eva G.
Skinner, Pamela J.
Connick, Elizabeth
Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection
title Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection
title_full Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection
title_fullStr Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection
title_full_unstemmed Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection
title_short Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection
title_sort follicular regulatory t cells impair follicular t helper cells in hiv and siv infection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4616158/
https://www.ncbi.nlm.nih.gov/pubmed/26482032
http://dx.doi.org/10.1038/ncomms9608
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