BACH1 is overexpressed in prostate cancer. Because this promotes invasion and migration, it may facilitate metastasis of prostate cancer. Thus, BACH1 is a potential therapeutic target for metastatic prostate cancer. BACH1 silencing therapy can be considered as a novel and effective adjuvant in prostate cancer targeted therapies.
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 Snail-1 led to the induction of apoptosis. miR-21 and miR-29b depression have been shown in Snail-1 suppressed group in EJ-138 cells in vitro. These results propose that Snail-1 might play an important role in the progression of bladder cancer, and be a potential therapeutic target for trigger apoptosis and suppression of EMT-related miRNAs in bladder cancer.
Taken together, our experiment showed that subjecting HCT-116 cells to dichloromethane extract of nettle (U. dioica), increases turnover of these cells. Thus, it may be a useful agent in the treatment of colorectal cancer.
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