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T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease

T cells that produce both IL-17 and IFN-γ, and co-express ROR-γt and T-bet, are often found at sites of autoimmune inflammation. However, it is unknown whether this co-expression of T-bet with ROR-γt is a prerequisite for immunopathology. We show here that T-bet is not required for the development o...

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Autores principales: O'Connor, Richard A, Cambrook, Helen, Huettner, Katja, Anderton, Stephen M
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BlackWell Publishing Ltd 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4068221/
https://www.ncbi.nlm.nih.gov/pubmed/23878019
http://dx.doi.org/10.1002/eji.201343689
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author O'Connor, Richard A
Cambrook, Helen
Huettner, Katja
Anderton, Stephen M
author_facet O'Connor, Richard A
Cambrook, Helen
Huettner, Katja
Anderton, Stephen M
author_sort O'Connor, Richard A
collection PubMed
description T cells that produce both IL-17 and IFN-γ, and co-express ROR-γt and T-bet, are often found at sites of autoimmune inflammation. However, it is unknown whether this co-expression of T-bet with ROR-γt is a prerequisite for immunopathology. We show here that T-bet is not required for the development of Th17-driven experimental autoimmune encephalomyelitis (EAE). The disease was not impaired in T-bet(−/−) mice and was associated with low IFN-γ production and elevated IL-17 production among central nervous system (CNS) infiltrating CD4(+) T cells. T-bet(−/−) Th17 cells generated in the presence of IL-6/TGF-β/IL-1 and IL-23 produced GM-CSF and high levels of IL-17 and induced disease upon transfer to naïve mice. Unlike their WT counterparts, these T-bet(−/–) Th17 cells did not exhibit an IL-17→IFN-γ switch upon reencounter with antigen in the CNS, indicating that this functional change is not critical to disease development. In contrast, T-bet was absolutely required for the pathogenicity of myelin-responsive Th1 cells. T-bet-deficient Th1 cells failed to accumulate in the CNS upon transfer, despite being able to produce GM-CSF. Therefore, T-bet is essential for establishing Th1-mediated inflammation but is not required to drive IL-23-induced GM-CSF production, or Th17-mediated autoimmune inflammation.
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spelling pubmed-40682212014-07-16 T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease O'Connor, Richard A Cambrook, Helen Huettner, Katja Anderton, Stephen M Eur J Immunol Highlights T cells that produce both IL-17 and IFN-γ, and co-express ROR-γt and T-bet, are often found at sites of autoimmune inflammation. However, it is unknown whether this co-expression of T-bet with ROR-γt is a prerequisite for immunopathology. We show here that T-bet is not required for the development of Th17-driven experimental autoimmune encephalomyelitis (EAE). The disease was not impaired in T-bet(−/−) mice and was associated with low IFN-γ production and elevated IL-17 production among central nervous system (CNS) infiltrating CD4(+) T cells. T-bet(−/−) Th17 cells generated in the presence of IL-6/TGF-β/IL-1 and IL-23 produced GM-CSF and high levels of IL-17 and induced disease upon transfer to naïve mice. Unlike their WT counterparts, these T-bet(−/–) Th17 cells did not exhibit an IL-17→IFN-γ switch upon reencounter with antigen in the CNS, indicating that this functional change is not critical to disease development. In contrast, T-bet was absolutely required for the pathogenicity of myelin-responsive Th1 cells. T-bet-deficient Th1 cells failed to accumulate in the CNS upon transfer, despite being able to produce GM-CSF. Therefore, T-bet is essential for establishing Th1-mediated inflammation but is not required to drive IL-23-induced GM-CSF production, or Th17-mediated autoimmune inflammation. BlackWell Publishing Ltd 2013-11 2013-07-23 /pmc/articles/PMC4068221/ /pubmed/23878019 http://dx.doi.org/10.1002/eji.201343689 Text en © 2013 The Authors. European Journal of Immunology published by WILEY-VCH Verlag GmbH & Co. KGaA Weinheim. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Highlights
O'Connor, Richard A
Cambrook, Helen
Huettner, Katja
Anderton, Stephen M
T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease
title T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease
title_full T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease
title_fullStr T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease
title_full_unstemmed T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease
title_short T-bet is essential for Th1-mediated, but not Th17-mediated, CNS autoimmune disease
title_sort t-bet is essential for th1-mediated, but not th17-mediated, cns autoimmune disease
topic Highlights
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4068221/
https://www.ncbi.nlm.nih.gov/pubmed/23878019
http://dx.doi.org/10.1002/eji.201343689
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