Thrombopoietin regulates IEX-1 gene expression through ERK-induced AML1 phosphorylation.

Abstract excerpt

The extracellular signal-regulated kinases (ERKs) are required for thrombopoietin (TPO) functions on hematopoietic cells, but the ERKs targets involved remain unknown. Here we show that the regulation of the immediate early gene X-1 (IEX-1), identified as an ERK substrate in response to TPO, was mediated by an ERK-dependent phosphorylation of AML1. The addition of TPO to UT7-Mpl cells and primary megakaryocytes...

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