LRH-1 drives colon cancer cell growth by repressing the expression of the CDKN1A gene in a p53-dependent manner

作者: Holly B Kramer , Chun-Fui Lai , Hetal Patel , Manikandan Periyasamy , Meng-Lay Lin

DOI: 10.1093/NAR/GKV948

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摘要: Liver receptor homologue 1 (LRH-1) is an orphan nuclear that has been implicated in the progression of breast, pancreatic and colorectal cancer (CRC). To determine mechanisms underlying growth promotion by LRH-1 CRC, we undertook global expression profiling following siRNA-mediated knockdown HCT116 cells, which require for HT29 does not regulate growth. Interestingly, cell cycle inhibitor p21 (CDKN1A) was regulated cells. regulation observed where p53 mutated. dependence confirmed with siRNA, while LRH-1-regulation evident cells had deleted. We demonstrate LRH-1-mediated involve altered protein or phosphorylation, show inhibits recruitment to promoter, likely through a mechanism involving chromatin remodelling. Our study suggests important role CRC retain wild-type p53.

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