摘要
目的:探讨川芎嗪对K562细胞端粒酶活性及凋亡的影响,进一步研究川芎嗪抗白血病作用的分子机制。方法:用光学显微镜及透射电镜观察经川芎嗪作用后K562细胞具有的凋亡形态学改变,采用流式细胞仪检测Fas蛋白的表达;采用多聚酶链式反应-酶联免疫测定法(PCR-ELISA)检测白血病细胞端粒酶活性。结果:川芎嗪能抑制K562细胞端粒酶活性,随药物浓度增加和利用时间的延长,其抑制作用增强,并能诱导K562细胞凋亡,使Fas蛋白水平上调。结论:川芎嗪能显著抑制K562细胞端粒酶活性,其作用可能与诱导细胞凋亡有关。在此过程中,Fas也可能参与了细胞凋亡的调节。
Objective:To investigate the effects of Tetramethylpyrazine(TMP)on telomerase activity and apoptosis in K562 cells lines and study the melocular mechanism of it's antileukemie. Methods: Cell apoptosis was observed by light microscopy and transmission electron microscopy. The expression of Fas was measured by flow cytometry. Polymerase chain reaction enzyme linked immunoassay(PCR-ELISA)was used to assay telomerase activity of K562 cells. Results: Tetramethylpyrazine could inhibit telomerase activity of K562 cells in a time-and concentrationdependentmanner. Meanwhile,it could induce apoptosis obviously and up-regulate the levels of Fas in K562 cells. Conclusions:Tetramethylpyrazine could inhibit telomerase activity of K562 cells, and the mechanism of effect was maybe relate to inducing apoptosis and the expression of Fas protein.
出处
《中国冶金工业医学杂志》
2010年第1期5-7,共3页
Chinese Medical Journal of Metallurgical industry