基础医学与临床 ›› 2013, Vol. 33 ›› Issue (10): 1264-1268.

• 研究论文 • 上一篇    下一篇

亚硒酸钠诱导结直肠癌SW480细胞线粒体损伤及细胞凋亡

黄方,黄艾,马虹,张秋月,张涛   

  1. 华中科技大学同济医学院附属协和医院肿瘤中心
  • 收稿日期:2013-08-21 修回日期:2013-08-30 出版日期:2013-10-05 发布日期:2013-09-25
  • 通讯作者: 张涛 E-mail:705710401@qq.com
  • 基金资助:
    GLS介导的线粒体代谢途径调节Kras基因突变结直肠癌增殖机制研究

Selenite induces mitochondrial damage and apoptosis in SW480 colorectal cancer cells

  • Received:2013-08-21 Revised:2013-08-30 Online:2013-10-05 Published:2013-09-25

摘要: 目的 研究亚硒酸钠诱导细胞凋亡的机制,为亚硒酸钠作为潜在的结直肠癌治疗药物提供依据。方法 把细胞分为对照组,亚硒酸钠组,用流式细胞术,共聚焦显微镜分别检测细胞内ROS水平变化,细胞凋亡情况,以及线粒体损伤,然后利用MnTMPyP抑制ROS水平,观察SW480变化情况。利用细胞亚组分Western blot 检测细胞色素C释放。结果 亚硒酸钠在SW480细胞中诱导线粒体及细胞内ROS水平升高,造成线粒体损伤,引起细胞色素C释放,促进细胞凋亡(P均<0.05)。而这一过程可以被超氧阴离子抑制剂MnTMPyP抑制。结论 亚硒酸钠通过氧化应激诱导结直肠癌SW480细胞线粒体损伤及细胞凋亡。

关键词: 亚硒酸钠, 线粒体损伤, 凋亡, 直结肠癌

Abstract: Objective We investigated the mechanism of apoptosis induced by selenite from the perspective of mitochondrial damage, aiming to provide evidence to support therapeutic role of selenite in colorectal cancer. Methods Divide SW480 into 2 groups,investigate the ROS level,apoptosis and mitochondrial damage induced by selenite via confocal microscope, flowcytometry (FCM) and so on. Using MnTMPyP inhibits ROS level to analysis the process, detcect the function of cytochrome C in the process. Results Selenite increases ROS level in SW480 cells, induces mitochondrial damage, decreases mitochondrial membrane potential, leading to mitochondria fragmentation, release of cytochrome C and apoptosis. Superoxide anion inhibitor MnTMPyP could inhibit the process. Conclusion Selenite can induce mitochondrial damage and apoptosis in SW480 via oxidative stress. Selenite has potential therapeutic effect in treatment of colorectal cancer.

Key words: Selenite , Mitochondrial damage , Apoptosis , Colorectal cancer

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