Document Type: Research Articles
Department of Genetics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.
Department of Physiology, Faculty of basic Science, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
Department of Microbiology, Faculty of bio Sciences, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran.
Department of Biotechnology, Factualy of BioScineces, North Tehran Branch, Islamic Azad University, Tehran, Iran.
To investigate the effects of Phlomis russeliana and Ziziphus spina-christi leaf extracts on apoptosis in breast cancer MCF-7 cells. Cell lines were divided into control group and groups exposed to 0.001, 0.01, 0.1, 1 mg/ml of Ziziphus spina-christi and Phlomis russeliana leaf extracts. Cell viability was quantified by MTT assay. The expression of Bax and Bcl-2 genes was evaluated by Real time PCR analysis. Statistical analysis was performed using ANOVA. HEK239 cells viability significantly increased in groups exposed to 0.001, 0.01 and 0.1 mg/ml of Z.christi leaf extract and decreased in group exposed to 10 mg/ml of P.russeliana leaf extract. MCF-7 cells viability significantly decreased in groups exposed to 0.001 ,0.01, 0.1, 1 and 10 mg/ml of Z.christi leaf extract and increased in groups exposed to 0.001 and 0.01 mg/ml of P.russeliana leaf extract. Exposure of MCF-7 cells to 1 and 10 mg/ml of P.russeliana leaf extract also led to significant decrease in cell viability. The cytotoxic effect of Z.christi was higher than P.russeliana leaf extracts on MCF7 cells. 1 mg/ml of Z.christi leaf extracts also significantly increased the expression level of both Bax and Bcl-2 genes in MCF7 cells. Bcl-2 gene expression significantly increased in group exposed to 10 mg/ml of P.ruseliana leaf extract.Despite P.russeliana leaf extract, lower Z.christi leaf extract concentrations inhibited MCF-7 cells proliferation. Ziziphus spina-christi and phlomis russeliana leaf extracts mechanism of action is occurred through Bax-independent apoptotic pathway on MCF-7 cells.