alexa The Intestinal Wnt TCF Signature.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Van der Flier LG, SabatesBellver J, Oving I, Haegebarth A, De Palo M,

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Abstract BACKGROUND & AIMS: In colorectal cancer, activating mutations in the Wnt pathway transform epithelial cells through the inappropriate expression of a TCF4 target gene program, which is physiologically expressed in intestinal crypts. METHODS: We have now performed an exhaustive array-based analysis of this target gene program in colorectal cancer cell lines carrying an inducible block of the Wnt cascade. Independently, differential gene-expression profiles of human adenomas and adenocarcinomas vs normal colonic epithelium were obtained. RESULTS: Expression analyses of approximately 80 genes common between these data sets were performed in a murine adenoma model. The combined data sets describe a core target gene program, the intestinal Wnt/TCF signature gene set, which is responsible for the transformation of human intestinal epithelial cells. CONCLUSIONS: The genes were invariably expressed in adenomas, yet could be subdivided into 3 modules, based on expression in distinct crypt compartments. A module of 17 genes was specifically expressed at the position of the crypt stem cell. This article was published in Gastroenterology and referenced in Journal of Addiction Research & Therapy

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