Crocin Enhances Cisplatin-Induced Chemosensitivity in Human Cervical Cancer Cell Line
2019
Background: Anti-tumor effects of crocin have been investigated in different tumors; however, its precise molecular mechanism is not exactly elucidated. Objectives: In the present investigation, we have studied pro-apoptotic and anti-proliferative properties of crocin and cisplatin combination on cervical cancer cells. Methods: Cell viability and apoptosis assays were monitored by MTT, Hoechst 33258 staining methods, respectively. The expression levels of apoptotic related genes, including Bax, Bcl-2, p53 mRNA, and miR-365 were analyzed by quantitative reverse transcription- polymerase chain reaction (qRT-PCR). Using Western blot, we have also assessed the protein expression of the above apoptotic genes. Results: The results of this study demonstrated that the combination treatment of cells with crocin and cisplatin significantly reduced the proliferation of cancer cells and induced apoptosis. Furthermore, the Bax/Bcl-2 ratio and the mRNA level of p53 markedly increased in treated cells, whereas it decreased miR-365 expression, an upstream regulator of Bcl2 and Bax. Conclusions: Accordingly, crocin could be a potential candidate for more evaluations such as in vivo studies, since it shows a proper in vitro anticancer effect. It is also suggested that a combination of crocin and cisplatin could be applied as an effective and promising chemotherapy strategy.
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