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中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (3): 308-311.

• 研究原著 • 上一篇    下一篇

As2O3 诱导K562细胞凋亡过程中细胞表面电荷变化的研究

苏永宏, 彭晓, 焦宁超1, 王东海   

  1. 兰州医学院附属一院血液科, 兰州730000, 甘肃;
    1平凉市医院, 平凉740000, 甘肃
  • 收稿日期:2003-09-11 修回日期:2003-10-28 出版日期:2004-03-26 发布日期:2020-11-21
  • 通讯作者: 彭晓, 男, 教授, 主任医师, 硕士生导师, 研究方向:白血病的诊断与治疗。Tel:0931-8636230  E-mail:pengxiao.cn@163.net
  • 作者简介:苏永宏, 男, 在读硕士。

Changes of cell surface charge of K562 cells during apoptosis induced by arsenic trioxide

SU Yong-Hong, PENG Xiao, JIAO Ning-Chao1, WANG Dong-Hai   

  1. Department of Hematology, the First Affiliated Hospital of Lanzhou Medical College, Lanzhou 730000, Gansu, China;
    1Pingliang Hospital, Pingliang 740000, Gansu, China
  • Received:2003-09-11 Revised:2003-10-28 Online:2004-03-26 Published:2020-11-21

摘要: 目的:研究三氧化二砷(As2O3) 诱导K562 细胞凋亡时细胞表面电荷的变化, 阐明As2O3 诱导K562细胞凋亡的可能机制, 为As2O3 在临床上的应用提供理论依据。方法:应用细胞电泳仪检测As2O3 诱导K562细胞凋亡中细胞电泳率的变化。通过细胞增殖、活力检测, 形态学观察, 亚G1 期细胞含量和DNA 凝胶电泳等鉴定细胞凋亡。结果:1.0 ~ 20 μmol·L-1As2O3 作用于K562细胞, 在细胞形态、DNA 凝胶电泳、FCM 显示出典型的细胞凋亡特征之前, 试验组细胞表面电荷已在1.6 h 左右开始下降, 6 h 内降低最明显, 6 h 后虽有下降, 但幅度明显减弱。与对照组比较, 低于1.0 μmol·L-1 的As2O3 对细胞表面电荷影响不大。结论:细胞表面电荷的下降是K562 细胞凋亡的早期事件。细胞表面电荷的下降有一定的时间范围, 超过此范围, 细胞表面电荷下降趋向无限大。

关键词: 细胞表面电荷, 细胞电泳率, K562 细胞, As2O3, 细胞凋亡

Abstract: AIM: To explore the changes of cell surface charge on apoptotic K562 induced by arsenic trioxide (As2O3).METHODS: The changes of cell surface charge were observed by the electrophoresis mobility.The techniques used to estimate apoptotic activity in K562 cells involved cell proliferation, cell viability, cell morphology, flow cytometry, and agarose gel electrophoresis assay. RESULTS: The electrophoresis mobility decreased with the passing of time.The decrease appeared at about 1.6 h and greatly enhanced in 6 h, which occurred before the typical changes of cell morphology and DNA contents for apoptosis.After 6 hours, the reduce in electrophoresis mobility was not obvious, in spite of decrease.CONCLUSION: The changes of cell surface charge can reflect apoptosis, especially in early time.It is early event of apoptotic K562.

Key words: cell surface charge, electrophoresis mobility, K562 cell, As2O3, apoptosis

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