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Updated: Jun 27, 2026

3D Culturing of Organoids from the Intestinal Villi Epithelium Undergoing Dedifferentiation
Published on: April 1, 2021
Homeodomain transcription factor CDX1 is required for the transcriptional induction of PPARgamma in intestinal cell
Min Jung Park1, Hye Young Kim, KyeongJin Kim
1Department of Molecular Biology, College of Natural Sciences, Pusan National University, Busan, Republic of Korea.
Abstract:
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 PPARgamma gene, a master transcriptional regulator of intestinal differentiation, at the transcriptional level, via functional interaction with CCAAT/enhancer-binding protein alpha (C/EBPalpha). Butyrate, an intestinal differentiation inducer, increased the protein interaction of CDX1 and C/EBPalpha, thereby resulting in a significant increase in PPARgamma expression. These results show that the regulation of target gene expression for intestinal determination is dependent on a transcriptional cascade of CDX1, C/EBPalpha, and PPARgamma.
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