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Direct Glucocorticoid Receptor-Stat5 Interaction in Hepatocytes Controls Body Size and Maturation-related Gene Expression

Overview
Journal Genes Dev
Specialty Molecular Biology
Date 2007 May 17
PMID 17504935
Citations 62
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Abstract

The glucocorticoid receptor regulates transcription through DNA binding as well as through cross-talk with other transcription factors. In hepatocytes, the glucocorticoid receptor is critical for normal postnatal growth. Using hepatocyte-specific and domain-selective mutations in the mouse we show that Stat5 in hepatocytes is essential for normal postnatal growth and that it mediates the growth-promoting effect of the glucocorticoid receptor through a direct interaction involving the N-terminal tetramerization domain of Stat5b. This interaction mediates a selective and unexpectedly extensive part of the transcriptional actions of these molecules since it controls the expression of gene sets involved in growth and sexual maturation.

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