SiRNA-mediated silencing of Snail-1 induces apoptosis and alters micro RNA expression in human urinary bladder cancer cell line.

SiRNA-mediated silencing of Snail-1 induces apoptosis and alters micro RNA expression in human urinary bladder cancer cell line. Artif Cells Nanomed Biotechnol. 2016 Jun 20;:1-6 Authors: Musavi Shenas SM, Mansoori B, Mohammadi A, Salehi S, Kaffash B, Talebi B, Babaloo Z, Shanehbandi D, Baradaran B Abstract Snail-1 known as one of the important transcription factor is a mediator of survival and cell migration, and expression is raised in numerous cancer types. Snail-1 gene may show a role in recurrence of several cancers including bladder cancer by down-regulating E-cadherin, inducing an epithelial to mesenchymal transition (EMT) and its related microRNAs (miRNAs). The aim of this study was to investigate the effect of a specific Snail-1 siRNA on apoptosis and alter EMT related miRNAs of EJ-138 (bladder cancer) cells. The cells were transfected with siRNAs using transfection reagent. The cytotoxic effects of Snail-1 siRNA, on bladder cancer cells were determined using MTT assay. Relative Snail-1 mRNA levels were measured by QRT- PCR, respectively. Apoptosis was measured by TUNEL test based on labeling of DNA strand breaks. We also evaluated miR-29b, miR-21, and miR-203 expression by QRT-PCR to determine alteration in miRNAs expression involved in EMT. Snail-1 siRNA significantly reduced mRNA expression levels in 48 h after transfection at the concentration of 60 pmol in bladder cancer cells. We also showed that the silencing of Sn...
Source: Artificial Cells, Nanomedicine and Biotechnology - Category: Biotechnology Tags: Artif Cells Nanomed Biotechnol Source Type: research