LncRNA LINC00641 predicts prognosis and inhibits bladder cancer progression through miR-197-3p/KLF10/PTEN/PI3K/AKT cascade
2018
Li, Zhijia | Hong, Shizhe | Liu, Zhihu
As a new group of important effector molecules involved in multiple cancers, long noncoding RNAs (lncRNAs) have attracted much attention recently. Especially, evidences have indicated lncRNAs might be promising biomarkers and targets for cancer therapy. LINC00641 is a novel lncRNA, whose function remains totally unclear. The aim of our study was to determine the functions of LINC00641 in bladder cancer. We found that LINC00641 expression was significantly down-regulated in bladder cancer tissues. Down-regulation of LINC00641 in patients with bladder cancer predicts poor prognosis. Gain-of-function assays indicated that LINC00641 up-regulation markedly inhibited the proliferation, migration and invasion of bladder cancer cells. Xenograft assay also confirmed that LINC00641 overexpression suppressed bladder cancer growth in vivo. Mechanistically, LINC00641 was demonstrated to interact with miR-197-3p, whose target was KLF10. By up-regulating KLF10 level, LINC00641 suppressed the PTEN/PI3K/AKT pathway, leading to prevention of bladder cancer progression. Taken together, our study illustrated a novel signaling cascade of LINC00641/miR-197-3p/KLF10/PTEN/PI3K/AKT pathway regulating bladder cancer development.
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