面包海星皂苷-1对恶性胶质瘤细胞系U87MG增殖抑制的体外研究

Inhibiting proliferation of human glioblastoma U87MG cells by Asterosaponin 1

目的:初步探讨面包海星皂苷-1(asterosaponins 1)对体外恶性胶质细胞瘤细胞生长的影响及其作用机理。方法:我们使用MTT、细胞周期分析、Hoechst 33342细胞核染色荧光显微镜观察、透射电子显微镜观察等方法了解面包海星皂苷-1对U87MG细胞的作用。结果:实验结果显示,面包海星皂苷-1在很低的浓度(IC50=4.3μg/mL)就够引起人胶质母细胞瘤细胞系U87MG细胞的增殖抑制。当面包海星皂苷-1作用浓度为3.4μg/mL和4.3μg/mL时,U87MG细胞出现S期阻滞,而其浓度为10.0μg/mL时,U87MG细胞出现G0/G1期阻滞。同时,出现的亚二倍体峰(sub-G1)随浓度和时间而增加。Hoechst 33342细胞核染色荧光显微镜观察以及透射电子显微镜下细胞形态观察显示出典型的凋亡细胞形态学特征。结论:体外实验初步显示,面包海星皂苷-1可明显抑制U87MG细胞的增殖,并促其凋亡,具有显著的抗恶性胶质细胞瘤的药理作用。

Objective:We did some prelimimary research in a novel chemotherapy to malignant glioblastoma.Asterosaponin 1,a new cytostatic agent from the starfish Culcita novaeguineae appear to exhibit various biological activities,but the function and mechanism of this new agent on glioblastoma cells has not previously been determined.Methods:In the present study,we investigated the proliferation change of human glioblastoma U87MG cells exposured to different concentrations of asterosaponin 1 for different time.Results...