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.
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.
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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 in DP thymocytes, we demonstrated that deficiency in TCF-1 and LEF-1 diminished CD4+ T cell output and redirected CD4+ T cells to a CD8+ T cell fate. The role of TCF-1 and LEF-1 in CD4-CD8 lineage choice was partly mediated by direct positive regulation of Th-POK. Furthermore, loss of TCF-1 and LEF-1 unexpectedly caused CD4 derepression in CD8+ lineage-committed T cells without affecting the expression of Runx factors. Instead, TCF-1 physically interacted with Runx3 to cooperatively silence the Cd4 gene. Thus, TCF-1 and LEF-1 adopt distinct genetic wiring to program CD4+ fate decision and establish CD8+ T cell identity.
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DOI:
10.1038/nri2416
发表时间:
2008-10
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
通讯作者:
--
影响因子:
56.9
作者:
GRUSBY, MJ;JOHNSON, RS;GLIMCHER, LH
通讯作者:
GLIMCHER, LH
影响因子:
64.5
作者:
Taniuchi, I;Osato, M;Littman, DR
通讯作者:
Littman, DR
影响因子:
3.7
作者:
Lotem J;Levanon D;Negreanu V;Leshkowitz D;Friedlander G;Groner Y
通讯作者:
Groner Y
DOI:
10.1073/pnas.1110230108
发表时间:
2011-12-13
影响因子:
11.1
作者:
Germar, Kristine;Dose, Marei;Gounari, Fotini
通讯作者:
Gounari, Fotini