Convergence of Transforming Growth Factor-β and Vitamin D Signaling Pathways on SMAD Transcriptional Coactivators
摘要:
Cell proliferation and differentiation are regulated by growth regulatory factors such as transforming growth factor-β (TGF-β) and the liphophilic hormone vitamin D. TGF-β causes activation of SMAD proteins acting as coactivators or transcription factors in the nucleus. Vitamin D controls transcription of target genes through the vitamin D receptor (VDR). Smad3, one of the SMAD proteins downstream in the TGF-β signaling pathway, was found in mammalian cells to act as a coactivator specific for ligand-induced transactivation of VDR by forming a complex with a member of the steroid receptor coactivator-1 protein family in the nucleus. Thus, Smad3 may mediate cross-talk between vitamin D and TGF-β signaling pathways.
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DOI:
10.1126/science.283.5406.1317
被引量:
年份:
1999











































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