In this thesis two new mouse models of colorectal cancer were characterized. The Caveolin-1/APC-deficiency model revealed Ras-mediated inactivation of PPARg in colon tumor tissue via PPARg’s nuclear export. In the second model, combination of Ras (G12V)-overexpression with PPARg-knockout resulted in enhanced hyperplastic lesions in the small intestine. Therapeutic activation of PPARg reduced tumorigenesis and inhibited Ras activity via activation of the endogenous Ras-inhibitors Cav1 and Dok1. PPARg activation might therefore be a new approach to treat CRC.
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In this thesis two new mouse models of colorectal cancer were characterized. The Caveolin-1/APC-deficiency model revealed Ras-mediated inactivation of PPARg in colon tumor tissue via PPARg’s nuclear export. In the second model, combination of Ras (G12V)-overexpression with PPARg-knockout resulted in enhanced hyperplastic lesions in the small intestine. Therapeutic activation of PPARg reduced tumorigenesis and inhibited Ras activity via activation of the endogenous Ras-inhibitors Cav1 and Dok1. P...
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