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

研究成果: Article査読

93 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)646-656
ページ数11
ジャーナルNature Immunology
15
7
DOI
出版ステータスPublished - 07-2014
外部発表はい

All Science Journal Classification (ASJC) codes

  • 免疫アレルギー学
  • 免疫学

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