钙离子信号与细胞凋亡

被引:50
作者
郭静
蒲咏梅
张东才
机构
[1] 香港科技大学生物系,LaboratoryofCellularCarcinogenesisandTumorPromotion,CenterforCancerResearch,NationalCancerInstitute,NationalInstitutesofHealth,Bethesda,MD,USA,香港科技大学生物系中国香港,中国香港
关键词
钙离子信号; 凋亡; 线粒体; 内质网; Bcl-2族蛋白; 钙离子;
D O I
暂无
中图分类号
Q249 [细胞间的联系与细胞外基质]; Q255 [细胞的衰老与死亡];
学科分类号
摘要
细胞凋亡的分子机制是什么?这个问题当前引起人们广泛的研究兴趣。作为重要的第二信使,钙信号在许多生理和细胞活动中都起到了十分重要的作用。钙信号是否也在凋亡的调控中起作用呢?虽然在过去十多年中,许多研究证据都表明钙信号参与凋亡的调控,但是,钙信号如何作用于凋亡过程的具体机理仍然是众说纷纭。事实上,许多研究结果仍存有争议。文章总结了近几年来大量关于钙信号与凋亡研究的成果,集中讨论了两个问题1)在凋亡前期“决定阶段”有没有钙离子信号的参与?2)钙离子信号与哪些凋亡调控因子(包括Bcl-2族蛋白)相互作用及如何作用?这问题还牵涉到亚细胞结构中钙库的作用(包括细胞质、内质网和线粒体)。根据作者自己的实验结果,文章对这些文献中不同的说法作了一些具体的评估。最后,文章还提出了一个钙离子信号参与调控细胞凋亡的可能模型。
引用
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页码:1 / 18
页数:18
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