小檗碱增强阿霉素诱导的膀胱癌T24细胞凋亡

 目的:研究小檗碱对阿霉素诱导的膀胱癌T24细胞凋亡的影响及机制。方法:将膀胱癌T24细胞分为对照组、阿霉素组、阿霉素+小檗碱组和小檗碱组。采用CCK-8试剂盒测定膀胱癌T24细胞的增殖抑制率。采用Hoechst 33258染色剂检测细胞凋亡,同时测定caspase-3和caspase-9活性以及Bcl-2、Bax蛋白的表达。结果:小檗碱呈剂量和时间依赖性地促进阿霉素诱导的T24细胞凋亡。与阿霉素组比较,小檗碱+阿霉素组caspase-3、caspase-9活性和Bax蛋白的表达水平明显增加,而Bcl-2蛋白表达水平降低。结论:小檗碱可进一步增强阿霉素对T24细胞增殖的抑制作用,其机制与小檗碱增强阿霉素诱导的T24细胞凋亡有关。

Berberine promotes anti-proliferative effects of doxorubicin in T24 bladder cancer cells by enhancing apoptosis

AIM: To observe the effect of berberine (Ber) on doxorubicin (DOX)-induced apoptosis in bladder cancer T24 cells. METHODS: The cells were exposed to DOX in the presence or absence of different concentrations of Ber. The viability of the cells was determined by CCK-8 assay. The apoptosis was measured by Hoechst 33258 staining and the protein levels of cleaved caspase-3, cleaved caspase-9, Bcl-2 and Bax were detected by Western blotting.RESULTS: Ber enhanced the inhibitory effect of DOX on the viability of T24 cells and promoted DOX-induced apoptosis in T24 cells. DOX increased the protein levels of cleaved caspase-3, cleaved caspase-9 and Bax, all of which were enhanced by treatment with Ber. In contrast, Ber exposure further decreased the expression of Bcl-2 in DOX-treated T24 cells.CONCLUSION: Ber enhances the anti-proliferative effects of DOX through promoting apoptosis in bladder cancer cells.