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The transcription factor Foxp1 is a critical negative regulator of the differentiation of follicular helper T cells

Academic Article
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Overview

authors

  • Wang, H.
  • Geng, J.
  • Wen, X.
  • Bi, E.
  • Kossenkov, A. V.
  • Wolf, A. I.
  • Tas, J.
  • Choi, Y. S.
  • Takata, H.
  • Day, T. J.
  • Chang, L. Y.
  • Sprout, S. L.
  • Becker, E. K.
  • Willen, J.
  • Tian, L.
  • Wang, X.
  • Xiao, Changchun
  • Jiang, P.
  • Crotty, Shane
  • Victora, G. D.
  • Showe, L. C.
  • Tucker, H. O.
  • Erikson, J.
  • Hu, H.

publication date

  • July 2014

journal

  • Nature Immunology  Journal

abstract

  • CD4(+) follicular helper T cells (T(FH) cells) are essential for germinal center (GC) responses and long-lived antibody responses. Here we report that naive CD4(+) T cells deficient in the transcription factor Foxp1 'preferentially' differentiated into T(FH) cells, which resulted in substantially enhanced GC and antibody responses. We found that Foxp1 used both constitutive Foxp1A and Foxp1D induced by stimulation of the T cell antigen receptor (TCR) to inhibit the generation of T(FH) cells. Mechanistically, Foxp1 directly and negatively regulated interleukin 21 (IL-21); Foxp1 also dampened expression of the costimulatory molecule ICOS and its downstream signaling at early stages of T cell activation, which rendered Foxp1-deficient CD4(+) T cells partially resistant to blockade of the ICOS ligand (ICOSL) during T(FH) cell development. Our findings demonstrate that Foxp1 is a critical negative regulator of T(FH) cell differentiation.

subject areas

  • Animals
  • CD4-Positive T-Lymphocytes
  • Cell Differentiation
  • Forkhead Transcription Factors
  • Inducible T-Cell Co-Stimulator Protein
  • Interleukins
  • Mice
  • Mice, Inbred C57BL
  • Receptors, Antigen, T-Cell
  • Repressor Proteins
  • T-Lymphocytes, Helper-Inducer
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Identity

PubMed Central ID

  • PMC4142638

International Standard Serial Number (ISSN)

  • 1529-2908

Digital Object Identifier (DOI)

  • 10.1038/ni.2890

PubMed ID

  • 24859450
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Additional Document Info

start page

  • 667

end page

  • 675

volume

  • 15

issue

  • 7

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