线粒体与细胞凋亡调控

被引:53
作者
朱玉山
陈俭
机构
[1] 南开大学生命科学学院
关键词
线粒体; 细胞色素C; 细胞凋亡; Caspase; Bcl-2;
D O I
暂无
中图分类号
Q255 [细胞的衰老与死亡];
学科分类号
071009 ; 090102 ;
摘要
细胞凋亡是一个受到一系列相关基因严格调控的细胞死亡过程。线粒体是细胞凋亡调控的活动中心。在凋亡因子的刺激下,线粒体释放出不同促凋亡因子如细胞色素C、Smac/Diablo等,激活细胞内凋亡蛋白酶Caspase。我们发现,活化后的Caspase可以反过来作用于线粒体,引发更大量线粒体细胞色素C的释放,构成细胞色素C释放的正反馈调节机制,从而导致电子传递链的中断、膜电势的丧失、胞内ROS的升高以及线粒体产生ATP功能的完全丧失。Bcl-2家族蛋白在细胞色素C释放和细胞凋亡调控中起关键作用。
引用
收藏
页码:506 / 513
页数:8
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