Increasing evidence showed that miR-25 is involved in the carcinogenesis and progression of various human cancers, while its role in non-small cell lung cancer (NSCLC) is still unclear. Here, we found that miR-25 is significantly up-regulated in NSCLC tissue samples and cell lines. Inhibition of miR-25 remarkably suppressed cell proliferation, migration and invasion in NSCLC cells, whereas enforced expression of miR-25 significantly increased NSCLC cells proliferation, migration and invasion. Moreover, we identified F-box and WD repeat domain-containing 7 (FBXW7) as a direct target of miR-25 and overexpression of FBXW7 partially attenuates the oncogenic effect of miR-25 on NSCLC cells. In conclusion, miR-25 is up-regulated in NSCLC and promotes NSCLC cells proliferation and motility partially by targeting FBXW7. Our data suggest that miR-25 might serve as a potential therapeutic target for NSCLC treatment in the future.
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