Abstract
MicroRNAs (miRNAs) act as important regulators in human cancers by regulating the gene expression. The dysregulation of miR-365 has been investigated in many cancers. However, the function of miR-365 remains unknown in lung adenocarcinoma. Therefore, the regulatory mechanism of miR-365 was explored in lung adenocarcinoma. The expression of miR-365 was detected in cell lines and 67 lung adenocarcinoma tissues using qRT-PCR. The Kaplan-Meier analysis was used to determine the association between miR-365 expressions and the survival rate in patients with lung adenocarcinoma. Transwell assay was then performed to investigate the effect of miR-365 on invasion and migration of lung adenocarcinoma cells. Downregulation of miR-365 and upregulation of ETS1 were identified in lung adenocarcinoma. Furthermore, miR-365 reversely regulated ETS1 expression in lung adenocarcinoma. Functionally, the overexpression of miR-365 inhibited proliferation, migration, and invasion of lung adenocarcinoma cells. However, the upregulation of ETS1 lessened the inhibitory effect of miR-365 in lung adenocarcinoma. In addition, miR-365 inhibited EMT and inactivated AKT/mTOR pathway in lung adenocarcinoma. MiR-365 inhibits the progression of lung adenocarcinoma by targeting ETS1 and inactivating the AKT/mTOR pathway.
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