MiR-497 Suppresses YAP1 and Inhibits Tumor Growth in Non-Small Cell Lung Cancer.

Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology
Chongbiao HuangDaliang Qi

Abstract

To investigate the expression, clinical significance and the cellular effects of miR-497 in non-small cell lung cancer (NSCLC). NSCLC cells were transiently transfected with miR-497 mimics or siRNA to up-regulate or down-regulate expression. Quantitative real-time PCR (qRT-PCR) was used to detect the mRNA level of miR-497. Luciferase assays, colony formation assays and BrdU incorporation assays were performed to identify the targets and role of miR-497 in NSCLC cells. Finally, the abundance of miR-497 was analyzed in a total of 51 NSCLC specimens. The transcript levels of miR-497 were significantly decreased in NSCLC tissue (25/30; 83.3%). Low miR-497 levels in tumor tissue correlated with advanced pT stage. Additionally, miR-497 transcript levels correlated with overall survival of NSCLC patients (n = 51, p = 0.022). Overexpression of miR-497 inhibited the proliferation of NSCLC cell and down-regulation of miR-497 resulted in elevated NSCLC growth. Exogenous over-expression of YAP1 partially eliminated miR-497-induced cell growth. miR-497 plays an important role in inhibiting the proliferation of NSCLC by targeting YAP1. Our results suggest that miR-497 is a potential therapeutic target in treating patients with NSCLC.

Citations

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