T helper cell fate specified by kinase-mediated interaction of T-bet with GATA-3 - PubMed (original) (raw)
. 2005 Jan 21;307(5708):430-3.
doi: 10.1126/science.1103336.
Affiliations
- PMID: 15662016
- DOI: 10.1126/science.1103336
T helper cell fate specified by kinase-mediated interaction of T-bet with GATA-3
Eun Sook Hwang et al. Science. 2005.
Abstract
Cell lineage specification depends on both gene activation and gene silencing, and in the differentiation of T helper progenitors to Th1 or Th2 effector cells, this requires the action of two opposing transcription factors, T-bet and GATA-3. T-bet is essential for the development of Th1 cells, and GATA-3 performs an equivalent role in Th2 development. We report that T-bet represses Th2 lineage commitment through tyrosine kinase-mediated interaction between the two transcription factors that interferes with the binding of GATA-3 to its target DNA. These results provide a novel function for tyrosine phosphorylation of a transcription factor in specifying alternate fates of a common progenitor cell.
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