| Literature DB >> 30956060 |
Xiangqian Kong1, Jie Chen2, Wenbing Xie1, Stephen M Brown1, Yi Cai1, Kaichun Wu3, Daiming Fan3, Yongzhan Nie3, Srinivasan Yegnasubramanian1, Rochelle L Tiedemann4, Yong Tao1, Ray-Whay Chiu Yen1, Michael J Topper1, Cynthia A Zahnow1, Hariharan Easwaran1, Scott B Rothbart5, Limin Xia6, Stephen B Baylin7.
Abstract
UHRF1 facilitates the establishment and maintenance of DNA methylation patterns in mammalian cells. The establishment domains are defined, including E3 ligase function, but the maintenance domains are poorly characterized. Here, we demonstrate that UHRF1 histone- and hemimethylated DNA binding functions, but not E3 ligase activity, maintain cancer-specific DNA methylation in human colorectal cancer (CRC) cells. Disrupting either chromatin reader activity reverses DNA hypermethylation, reactivates epigenetically silenced tumor suppressor genes (TSGs), and reduces CRC oncogenic properties. Moreover, an inverse correlation between high UHRF1 and low TSG expression tracks with CRC progression and reduced patient survival. Defining critical UHRF1 domain functions and its relationship with CRC prognosis suggests directions for, and value of, targeting this protein to develop therapeutic DNA demethylating agents.Entities:
Keywords: UHRF1; colorectal cancer prognosis; domain functions; maintenance DNA methylation; next-generation DNA demethylating agents; oncogenic properties; tumor suppressor gene silencing
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Year: 2019 PMID： 30956060 PMCID： PMC6521721 DOI： 10.1016/j.ccell.2019.03.003
Source DB: PubMed Journal: Cancer Cell ISSN： 1535-6108 Impact factor: 31.743