Abstract
Objective: To studythe effect of lentivirus-mediated inhibition of Med19 on cell migration andinvasion in the PC3 cells, and explore the mechanism of epithelial-mesenchymal transition transformation. Methods: The lentivirus vectors containing small interferingRNA(siRNA) targeting Medl9 gene were constructed and transfected to PC3 cells.Quantitative real-time PCR(qRT-PCR) and Western blot analysis were used to detect the Medl9 expression in the siRNA group(PC3-Med 19-siRNA cells)and the NC group(PC3-Med 19-sc cells) at 72h after the transfection.The cell mobility,migration and invasion ability of PC3 cells were respectively measured by Boyden migration and woun-healing assay. The expression of E-Cadherin, N-Cadherin, Vimentin, ZEB2, Snail-1, and Snail-2 mRNA were detected by using qRT-PCR. Results: The expression of Medl9 mRNA in PC3-Med 19-siRNA cells was lower than that in PC3-Med 19-scRNA cells(P<0.01). The number of migrated cells and invaded cells were significantly decreased in PC3-Med 19-siRNA cells(P<0.01). The expression of N-Cadherin, Vimentin, ZEB2, Snail-1, and Snail-2 mRNA were remarkablylower and E-Cadherin was higher in PC3-Med 19-siRNA cells. Conclusion: Med 19 inhibitioncouldreduce migration abilityof prostate cancer PC3 cells by epithelial-mesenchymal transition.
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