Transcriptional reprogramming of mature CD4⁺ helper T cells generates distinct MHC class II-restricted cytotoxic T lymphocytes

Daniel Mucida, Mohammad Mushtaq Husain, Sawako Muroi, Femke van Wijk, Ryo Shinnakasu, Yoshinori Naoe, Bernardo Sgarbi Reis, Yujun Huang, Florence Lambolez, Michael Docherty, Antoine Attinger, Jr-Wen Shui, Gisen Kim, Christopher J Lena, Shinya Sakaguchi, Chizuko Miyamoto, Peng Wang, Koji Atarashi, Yunji Park, Toshinori NakayamaKenya Honda, Wilfried Ellmeier, Mitchell Kronenberg, Ichiro Taniuchi, Hilde Cheroutre

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

TCRαβ thymocytes differentiate into either CD8αβ(+) cytotoxic T lymphocytes or CD4(+) helper T cells. This functional dichotomy is controlled by key transcription factors, including the helper T cell master regulator ThPOK, which suppresses the cytolytic program in major histocompatibility complex (MHC) class II-restricted CD4(+) thymocytes. ThPOK continues to repress genes of the CD8 lineage in mature CD4(+) T cells, even as they differentiate into effector helper T cell subsets. Here we found that the helper T cell fate was not fixed and that mature, antigen-stimulated CD4(+) T cells terminated expression of the gene encoding ThPOK and reactivated genes of the CD8 lineage. This unexpected plasticity resulted in the post-thymic termination of the helper T cell program and the functional differentiation of distinct MHC class II-restricted CD4(+) cytotoxic T lymphocytes.

Original languageEnglish
Pages (from-to)281-9
Number of pages9
JournalNature immunology
Volume14
Issue number3
DOIs
Publication statusPublished - 2013

Keywords

  • Animals
  • Cell Differentiation
  • Cell Lineage
  • Citrobacter rodentium
  • Histocompatibility Antigens Class II
  • Homeodomain Proteins
  • Interleukin-7
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • T-Lymphocytes, Cytotoxic
  • T-Lymphocytes, Helper-Inducer
  • Thymocytes
  • Transcription Factors

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