Evaluation of the Effect of Orlistatorlistat on Expression of OCT4, Nanog,SOX2, and KLF4 Genes in Colorectal Cancer SW40 Cell Line

Background and Objective: Orlistat drug is one of the most criticalanti-obesity drugs that widely used around the world. The aim of this study was evaluation the effect of orlistat on the expression of OCT4, Nanog, SOX2, and KLF4 genes in the colorectal cancer SW40 cell line. Materials and Methods: SW40 cell line was cultured in DMEM medium contained orlistat for 24h, and cell viability was assessed by MTT assay. The fold changes of expression of OCT4, NANOG, KLF4, and SOX2 at mRNA level against β-actin were determined by real-timePCR. Two-sample t-test and one-way ANOVA were used to compare the mean of expression of different genes in different groups and different concentrations; a significant level of 0.05 was considered in all tests. Results: Our results showed a significant difference in cell viability, when different doses of Orlistat were used for 24 hour. concentrations of 25 and 100 μM reduce significantly the expression of OCT4 (p <0.05) and SOX2 (p <0.05) in the treated group in comparison to control (p <0.05). Also, the mRNA expression of KLF4 and Nanog was reduced significantly after treatment of SW40 cell lines was performed with 100 μM doses of Orlistat (p <0.05). Conclusion: It appears that after further studies in animal and human phases, orlistat can be used for the treatment of Colorectal Cancer.