MicroRNA-4465 suppresses tumor proliferation and metastasis in non-small cell lung cancer by directly targeting the oncogene EZH2

• Published in: Biomedicine & pharmacotherapy Vol. 96; pp. 1358 - 1362
• Main Authors: Sun, Jian, Tian, Xin, Lu, Sheng-Qiang, Hu, Hai-Bo
• Format: Journal Article
• Language: English
• Published: France Elsevier Masson SAS 01.12.2017
• Subjects: 3' Untranslated Regions - genetics; A549 Cells; Carcinoma, Non-Small-Cell Lung - genetics; Cell Line; Cell Line, Tumor; Cell Movement - genetics; Cell Proliferation - genetics; Enhancer of Zeste Homolog 2 Protein - genetics; EZH2; Gene Expression Regulation, Neoplastic - genetics; HEK293 Cells; Humans; Invasion; Lung Neoplasms - genetics; MicroRNAs - genetics; miR-4465; NSCLC; Oncogenes - genetics; Proliferation; RNA, Messenger - genetics; miR-4465; Proliferation; NSCLC; Invasion; EZH2
• ISSN: 0753-3322; 1950-6007
• DOI: 10.1016/j.biopha.2017.11.070

MicroRNA-26 (miR-26) has been reported to be connected with tumor progression. MicroRNA-4465 (miR-4465) was one member of miR-26 family, however, the role of miR-4465 in non-small cell lung cancer (NSCLC) was unknown. This study was aimed to explore the function of miR-4465 and investigate whether miR-4465 can be a potential target for treating human NSCLC. QRT-PCR was applied to evaluate the miR-4465 expression levels in NSCLC cells. Then, we demonstrated the role of miR-4465 in NSCLC cells biological characteristics through detecting proliferation, migration and invasion. Luciferase reporter assay and TargetScan were applied to explore the potential target gene of miR-4465. In this study, we found that the miR-4465 expression levels in NSCLC cell lines were significantly reduced when compared to the normal human bronchial epithelial cell lines. And, over expression of miR-4465 could restrain the proliferation, migration and invasion of NSCLC. Moreover, MiR-4465 reduced EZH2 protein expression through the binding sites in 3′ -UTR of the EZH2 mRNA, indicating EZH2 may be a direct target gene of miR-4465. Conclusively, miR-4465 suppressed cancer cells proliferation and metastasis by directly targeting the oncogene EZH2 and it may serve as a new potential therapeutic target in NSCLC.