中文摘要：

目的 研究蛇床子素对急性髓系白血病HL-60细胞增殖、凋亡的影响,并探讨其作用的分子机制.方法 CCK8实验检测蛇床子素对HL-60细胞的增殖抑制作用,Hoechst染色观察药物8h作用后细胞的形态学变化,流式细胞术检测细胞凋亡情况,反转录-聚合酶链式反应（RT-PCR）检测HL-60细胞的Bcl-2、Bax mRNA表达变化,Western bolt检测HL-60细胞的活性caspase-3、caspase-8、caspase-9、Fas、FasL蛋白表达变化.结果 蛇床子素可明显抑制HL-60细胞增殖并诱导其发生凋亡,抑制率最高达（90.7±4.5）％,F=138.46,P=0.000;总凋亡率为33.6％,F=27.75,P=0.006.诱导后Bcl-2 mRNA表达下调,Bax mRNA表达上调,Bax/Bcl-2比值升高（F=210.12,P=0.000）,活性caspase-3、caspase-8、caspase-9、Fas、FasL蛋白表达水平随药物作用时间延长而升高.结论 蛇床子素可抑制HL-60细胞增殖并诱导凋亡,其诱导凋亡机制与同时激活线粒体途径和死亡受体途径相关.

英文摘要：

Objective To detect the effect of osthole on proliferation and apoptosis of HL-60 cells and its molecular mechanism.Methods HL-60 cells proliferation was measured through the CCK8 assay method.The cell morphological changes were observed by Hoechst33342 staining after 8 h of drug effect.Induction of apoptosis was determined by flow cytometry and fluorescent microscopy.Expressions of Bcl-2 and Bax mRNA were evaluated by RT-PCR,and the expressions of cleaved caspase-3,caspase-8,caspase-9,Fas and FasL were evaluated by using western bolt assay.Results Osthole could inhibit the proliferation of HL-60 cells,the maximum inhibiting rate was （90.7 ±4.5）％,F =138.46,P =0.000; the apoptosis rate was 33.6％,F =27.75,P =0.006.The changes of apoptosis of cells and nucleus were shown in cell morphological observation.Osthole affected the decrease of the mRNA levels of Bcl-2 and the increase of the Bax mRNA levels via a dosedependent manner（F =210.12,P =0.000）.Western blotting demonstrated that osthole could lead to the increase of the expression levels of cleaved caspase-3,caspase-8,caspase-9,Fas and FasL in the HL-60 cell line via a time-dependent manner.Conclusion Data suggests that osthole inhibits proliferation and induces apoptosis of HL-60 cells through mitochondria-dependent pathway and death-receptor pathway.