MiR-195 suppresses non-small cell lung cancer by targeting CHEK1

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Abstract

MiR-195 suppresses tumor growth and is associated with better survival outcomes in several malignancies including non-small cell lung cancer (NSCLC). Our previous study showed high miR-195 plasma levels associated with favorable overall survival of non-smoking women with lung adenocarcinoma. To further elucidate role of miR-195 in NSCLC, we conducted in vitro experiment as well as clinical studies in a cohort of 299 NSCLC samples. We demonstrated that miR-195 expression was lower in tumor tissues and was associated with poor survival outcome. Overexpression of miR-195 suppressed tumor cell growth, migration and invasion. We discovered that CHEK1 was a direct target of miR-195, which decreased CHEK1 expression in lung cancer cells. High expression of CHEK1 in lung tumors was associated with poor overall survival. Our results suggest that miR-195 suppresses NSCLC and predicts lung cancer prognosis.

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Liu, B., Qu, J., Xu, F., Guo, Y., Wang, Y., Yu, H., & Qian, B. (2015). MiR-195 suppresses non-small cell lung cancer by targeting CHEK1. Oncotarget, 6(11), 9445–9456. https://doi.org/10.18632/oncotarget.3255

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