欢迎访问《中国临床药理学与治疗学》杂志官方网站,今天是

中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (5): 569-572.

• 研究原著 • 上一篇    下一篇

三氧化二砷诱导K562/ADM细胞凋亡的作用机制研究

王东海, 魏虎来1, 苏永宏, 郝春燕2, 刘建民1   

  1. 兰州医学院第一附属医院血液科, 1医学实验中心, 2生物化学与分子生物学教研室, 兰州730000, 甘肃
  • 收稿日期:2004-02-06 修回日期:2004-03-08 发布日期:2020-11-22
  • 通讯作者: 魏虎来,男, 硕士生导师, 研究员, 研究方向:分子生物学和肿瘤免疫学。Tel:0931-8613164 E-mai l:weihulai@mail.lazmc.edu.cn
  • 作者简介:王东海, 男, 硕士生, 研究方向:白血病多药耐药。Tel:0931-8632455  E-mai l:donghai0257 @sina.com

Arsenic trioxide-induced apoptosis in K562/ADM cells and its mechanisms

WANG Dong-Hai, WEI Hu-Lai1, SU Yong-Hong, HAO Chun-Yan2, LIU Jian-Min1   

  1. Department of Hematology, the First Affiliated Hospital, 1Laboratory Center for Medical Science, 2Department of Biochemistry and Molecular Biology, Lanzhou Medical College, Lanzhou 730000, Gansu, China
  • Received:2004-02-06 Revised:2004-03-08 Published:2020-11-22

摘要: 目的 观察三氧化二砷(As2O3) 对K562/ADM细胞的诱导凋亡效应, 探讨其作用机制。 方法 应用噻唑蓝(MTT) 比色法、Wright-Giemsa 染色、DNA 琼脂糖凝胶电泳和流式细胞术(FCM) 观察K562/ADM 细胞凋亡;FCM 测定K562/ADM 细胞Fas、Bcl-2、P53 蛋白水平的变化;比色法检测Caspase3 活性变化。 结果 As2O3 可抑制K562/ADM 细胞增殖;K562/ADM 呈典型凋亡形态改变;DNA 电泳可见梯状条带出现;FCM 分析示亚G1 期细胞比例增高, G2 M 期阻滞;Fas、P53 蛋白表达明显上调;Caspase3 活性明显增强。 结论 As2O3 可通过Fas 依赖性Caspase3 激活而诱导K562/ADM 细胞凋亡。

关键词: 白血病, 多药耐药, 三氧化二砷, 凋亡

Abstract: AIM: To observe the apoptosis of K562/ ADM cells induced by As2O3 and to explore its possible mechanisms. METHODS: MTT assay, Wright-Giemsa staining, DNA agarose gel electrophoresis and cell cycle analysis were used to examine apoptosis in K562/ADM cells.Expression levels of Fas, Bcl-2 and P53 antigens were measured with FCM.Colorimetric assay was employed to detect the activation of Caspase3. RESULTS: As2O3 inhibited growth of K562/ADM cells.Morphological changes typical of apoptosis were observed through light microscopy.Agarose gel electrophoresis showed evident DNA fragmentation.Cell cycle analysis indicated increased Sub-G1 proportion and apoptosis rate, as well as apparent G2 M phase arrest.The expression of Fas and P53 antigens significantly increased after application of As2O3.Caspase 3 was also activated by As2O3. CONCLUSION: As2O3 induces apoptosis in K562/ADM cells by activating Caspase 3 via a Fas-dependent pathway.

Key words: leukemia, multidrug resistance, arsenic trioxide, apoptosis

中图分类号: