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1Effect and mechanism of miR-34a on proliferation, apoptosis and invasion of laryngeal carcinoma cells显示文摘Objective: To discuss the effect and mechanism of miR-34 a on the proliferation, apoptosis and invasion of laryngeal carcinoma cells. Methods: The laryngeal squamous carcinoma Hep2 cells were transiently transfected with miR-34 a mimics and miR-34 a NC. The MTT, colony-forming assay, Hoechst staining and Annexin V-PI double staining flow cytometry were employed to detect the effect of miR-34 a on the viability and apoptosis of laryngeal squamous carcinoma Hep2 cells; Transwell assay to defect the effect of miR-34 a on the migration and invasion of laryngeal squamous carcinoma Hep2 cells; western blot and RTPCR assay to defect the effect of miR-34 a mimics on the expression of survivin and Ki-67 m RNA in laryngeal squamous carcinoma Hep2 cells. Results: Compared with miR-34 a NC group, the cell viability in miR-34 mimics group was significantly decreased(P<0.01), the cell apoptosis rate was significantly increased(P<0.01), the abilities of cell migration and invasion were significantly reduced(P<0.01) and the expression of survivin and Ki-67 m RNA was significantly decreased(P<0.01). Conclusions: The increased expression of miR-34 a can induce the apoptosis of Hep2 laryngeal carcinoma cells and inhibit the cell proliferation and invasion, which is related to the down-regulated expression of survivin and Ki-67.Ju-Xiang Wang Qing-Jun Zhang Shi-Geng Pei Bao-Liang Yang 2016Asian Pacific Journal of Tropical Medicine2016,9,5:4
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