Abstract
目的探讨茯苓多糖(Pachymaran)对人宫颈癌HeLa细胞增殖、迁移、促凋亡的作用及其相关机制。 方法MTT法检测细胞增殖率并筛选出适宜的茯苓多糖低、中、高浓度用于后续实验;不同浓度的茯苓多糖处理细胞后,倒置相差显微镜观察细胞形态学变化;Hoechst 33342染色观察细胞核的变化;平板克隆实验检测细胞克隆形成能力;细胞划痕实验检测细胞迁移能力;流式细胞术检测细胞凋亡率及细胞周期;Western blot法检测凋亡、迁移及ERK通路相关蛋白的表达。 结果茯苓多糖浓度对HeLa细胞活力的影响实验得出,取30、40、50 mg/ml茯苓多糖作为低、中、高浓度进行后续实验;中、高浓度茯苓多糖处理细胞后,细胞和细胞核发生显著的凋亡形态学变化,低浓度下形态学变化不显著;不同浓度茯苓多糖均能降低细胞克隆形成能力;降低细胞迁移率(P 结论茯苓多糖能显著抑制HeLa细胞增殖,并诱导其凋亡。其促凋亡机制可能与下调p-ERK1/2表达,抑制ERK信号通路磷酸化有关。同时,茯苓多糖对抑制HeLa细胞的迁移也有一定的作用。
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