【摘要】 目的 :通过测定柔红霉素 (DNR)对急性早幼粒细胞白血病细胞株HL 60凋亡及Fas/FasL基因表达的变化 ,探讨Fas/FasL系统在细胞凋亡中的作用。方法 :应用荧光显微镜、结合DNA电泳及流式细胞仪分析技术 ,观察柔红霉素对HL 60细胞凋亡的影响及细胞凋亡过程中Fas/FasL基因的表达。结果 :柔红霉素浓度为 0 .1、1 μg/ml时 ,作用 6小时出现典型凋亡细胞 ,荧光显微镜观察HL 60细胞可见凋亡小体、染色质浓缩和胞体出芽改变 ,流式细胞仪分析可见凋亡峰 ,2 4小时达高峰 (45 .2 %± 1 0 .3 % )。 1 0 μg/ml柔红霉素作用 6小时 ,未见凋亡峰。柔红霉素可诱导Fas/FasL基因表达。结论 :柔红霉素诱导细胞凋亡是其治疗白血病的主要机制之一 ,Fas/FasL系统参与柔红霉素诱导的HL 60细胞的凋亡过程更多还原

【Abstract】 Purpose:The objective of the study is to investigate the pattern of apoptosis and to explore the effect of Fas/FasL on the process of apoptosis induced by daunorubicin (DNR) on human myeloid leukemia cell line HL 60.Methods:The effect on apoptosis and the expression of Fas and FasL antigen induced by DNR on cell line HL 60 were measured by fluorescence microscope ,DNA electrophoresis and flow cytometry analysis.Results:DNR could induce typical apoptosis of HL 60 cells with the DNR plating concentration at 0.1,1 μg/ml after 6 hours. Morphological changes such as apoptosis bodies, chromatic condensation and cytoplasm budding were observed by fluorescence microscope. Sub G 1 peaks was found by flow cytometry. HL 60 cell apoptosis rate reached a peak at 24 hours. Sub G 1 peaks were not found by flow cytometry with the DNR plating concentration at 10 μg/ml after 6 hours. DNR could upregulate the expression of Fas and FasL of HL 60 cells.Conclusions:Apoptosis induced by DNR is one of the primary mechanisms in chemotherapy. Fas/FasL system participate in the apoptosis induced by DNR .更多还原