TCF-1 and LEF-1 act upstream of Th-POK to promote the CD4 + T cell fate and interact with Runx3 to silence Cd4 in CD8 + T cells

Farrah C. Steinke, Shuyang Yu, Xinyuan Zhou, Bing He, Wenjing Yang, Bo Zhou, Hiroshi Kawamoto, Jun Zhu, Kai Tan, Hai Hui Xue

Research output: Contribution to journalArticlepeer-review

91 Citations (Scopus)

Abstract

The transcription factors TCF-1 and LEF-1 are essential for early T cell development, but their roles beyond the CD4 + CD8 + double-positive (DP) stage are unknown. By specific ablation of these factors in DP thymocytes, we demonstrated that deficiency in TCF-1 and LEF-1 diminished the output of CD4 + T cells and redirected CD4 + T cells to a CD8 + T cell fate. The role of TCF-1 and LEF-1 in the CD4-versus-CD8 lineage 'choice' was mediated in part by direct positive regulation of the transcription factor Th-POK. Furthermore, loss of TCF-1 and LEF-1 unexpectedly caused derepression of CD4 expression in T cells committed to the CD8 + lineage without affecting the expression of Runx transcription factors. Instead, TCF-1 physically interacted with Runx3 to cooperatively silence Cd4. Thus, TCF-1 and LEF-1 adopted distinct genetic 'wiring' to promote the CD4 + T cell fate and establish CD8 + T cell identity.

Original languageEnglish
Pages (from-to)646-656
Number of pages11
JournalNature Immunology
Volume15
Issue number7
DOIs
Publication statusPublished - 07-2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

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