期刊
FEBS LETTERS
卷 583, 期 1, 页码 29-35出版社
WILEY
DOI: 10.1016/j.febslet.2008.11.030
关键词
Butyrate; CDX1; PPAR gamma; C/EBP alpha; Intestinal differentiation
资金
- Korean Government [KRF-C00467]
The caudal-associated homeobox transcription factor, CDX1, performs critical functions in intestinal cell proliferation, differentiation, and neoplasia. In this study, we have identified the molecular mechanism underlying the CDX1-mediated regulation of intestinal cell differentiation. CDX1 enhanced the expression of PPAR gamma gene, a master transcriptional regulator of intestinal differentiation, at the transcriptional level, via functional interaction with CCAAT/enhancer-binding protein alpha (C/EBP alpha). Butyrate, an intestinal differentiation inducer, increased the protein interaction of CDX1 and C/EBP alpha, thereby resulting in a significant increase in PPAR gamma expression. These results show that the regulation of target gene expression for intestinal determination is dependent on a transcriptional cascade of CDX1, C/EBP alpha, and PPAR gamma.
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