期刊
FEBS JOURNAL
卷 280, 期 18, 页码 4531-4538出版社
WILEY
DOI: 10.1111/febs.12417
关键词
bladder cancer; EZH2; miR-144; miRNA; Wnt
microRNAs (miRNAs) have been proposed to be key regulators of diverse biological processes such as transcriptional regulation, cell growth and tumorigenesis. Wnt signaling plays an important role in the regulation of tumorigenesis and cancer progression. However, little is known about whether miR-144 regulates bladder cancer cell proliferation by controlling Wnt signaling. In this study, we found that the miR-144 expression level is significantly decreased in bladder cancer cell lines as well as in clinical cancer tissues. miR-144 inhibitor blocks the expression of endogenous miR-144 and promotes cancer cell proliferation, whereas miR-144 overexpression is sufficient to inhibit cell proliferation. We further demonstrated that enhancer of zeste homolog2 (EZH2) is a target gene of miR-144. miR-144 downregulation relieves miR-144-mediated repression of EZH2, which results in activation of Wnt/-catenin signaling and subsequent cell proliferation. These data suggest miR-144 is an essential mediator of bladder cancer cell proliferation, thus offering a new target for the development of therapeutic agents against bladder cancer.
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