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细胞凋亡与线粒体通透性转变孔的研究进展 被引量:31

Progress in research on apoptosis and mitochondrial permeability transition pore
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摘要 线粒体通透性转变孔(mitochondrialpermeabilitytransitionpore,MPTP)位于线粒体内外膜之间,由多个蛋白质组成,与细胞凋亡密切相关。在多种凋亡信号如促凋亡蛋白Bax、Bad、Bid和Ca2+、活性氧类等的作用下开放,使线粒体通透性发生转变,线粒体肿胀,线粒体跨膜电位降低,线粒体呼吸链受损,ATP合成受抑制,线粒体释放凋亡诱导因子及细胞色素C,通过不同信号转导途径,激活Caspase级联反应或其他凋亡相关蛋白,使DNA断裂,产生凋亡小体,细胞凋亡。Bcl-2、Bcl-xL、环孢菌素A、米酵菌酸等则可通过不同途径对抗凋亡。通过对MPTP开放机制以及对线粒体膜钾通道和解偶联蛋白调控的研究,可能会为细胞保护提供重要依据。
出处 《浙江大学学报(医学版)》 CAS CSCD 2005年第2期191-196,共6页 Journal of Zhejiang University(Medical Sciences)
基金 浙江省教育厅科研基金项目(20030306)
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