中华眼镜蛇蛇毒组分C诱导白血病细胞凋亡作用的研究

目的：研究眼镜蛇蛇毒组分Ｃ诱导白血病细胞凋亡的作用及机制。方法：应用光学显微镜透射电镜，脱氧核糖核酸（ＤＮＡ）电泳，流式细胞仪，逆转录聚合酶链反应（ＲＴ－ＰＣＲ）等方法，观察白血病细胞经过眼镜蛇蛇毒组分Ｃ处理后，形态学，生物化学及Ｂｃｌ－２／Ｂａｘ基因表达水平的变化。结果：眼镜蛇蛇毒组分Ｃ能诱导人粒细胞白血病细胞系（ＨＬ６０）发生凋亡形态学和生物化学变化；

Study on Human Leukemia Cell Apoptosis inducing Effect of Fraction C of Naja naja Actra Venom

To study the effect and mechanism of fraction C isolated from Naja naja Actra Venom (FCNNAV) in inducing apoptosis of human leukemia cells. Methods: Light microscope, transmission electron microscope, DNA electrophoresis, flow cytometry and RT-PCR assay were used to observe the changes of human leukemia cells in morphology and biochemistry, and Bcl-2/Bax expression after exposing to FCNNAV. Results: FCNNAV could induce HL60 cells apoptosis demonstrated by the typical morphological and biochemical changes. Flow cytometry showed that J6-1, K562, HL60 and fresh leukemia cells apoptosis could be induced by FCNNAV, and the apoptosis rate was dose-dependent. RT-PCR detection showed the Bcl-2 gene expression of HL60 cells was down-regulated by FCNNAV, whereas the Bax expression was unaffected. Conclusion: FCNNAV could induce apoptosis of human leukemia cells and this effect is related to down-regulation of Bcl-2 gene expression level.