Lysosomal membrane permeabilization induces cell death in a mitochondrion-dependent fashion.
Lysosomal membrane permeabilization induces cell death in a mitochondrion-dependent fashion.
复制标题
溶酶体膜通透性以线粒体依赖性方式诱导细胞死亡。
DOI:
10.1084/jem.20021952
复制
发表时间:
2003-05-19
期刊:
影响因子:
--
通讯作者:
Kroemer G
中科院分区:
文献类型:
--
作者:
Boya P;Andreau K;Poncet D;Zamzami N;Perfettini JL;Metivier D;Ojcius DM;Jäättelä M;Kroemer G
A number of diseases are due to lysosomal destabilization, which results in damaging cell loss. To investigate the mechanisms of lysosomal cell death, we characterized the cytotoxic action of two widely used quinolone antibiotics: ciprofloxacin (CPX) or norfloxacin (NFX). CPX or NFX plus UV light (NFX*) induce lysosomal membrane permeabilization (LMP), as detected by the release of cathepsins from lysosomes. Inhibition of the lysosomal accumulation of CPX or NFX suppresses their capacity to induce LMP and to kill cells. CPX- or NFX-triggered LMP results in caspase-independent cell death, with hallmarks of apoptosis such as chromatin condensation and phosphatidylserine exposure on the plasma membrane. LMP triggers mitochondrial membrane permeabilization (MMP), as detected by the release of cytochrome c. Both CPX and NFX* cause Bax and Bak to adopt their apoptotic conformation and to insert into mitochondrial membranes. Bax−/− Bak−/− double knockout cells fail to undergo MMP and cell death in response to CPX- or NFX-induced LMP. The single knockout of Bax or Bak (but not Bid) or the transfection-enforced expression of mitochondrion-targeted (but not endoplasmic reticulum–targeted) Bcl-2 conferred protection against CPX (but not NFX*)-induced MMP and death. Altogether, our data indicate that mitochondria are indispensable for cell death initiated by lysosomal destabilization.
登录
查看更多内容
DOI:
10.1083/jcb.200104008
发表时间:
2001-09-17
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mannick JB;Schonhoff C;Papeta N;Ghafourifar P;Szibor M;Fang K;Gaston B
通讯作者:
Gaston B
影响因子:
8
作者:
Annis, MG;Zamzami, N;Andrews, DW
通讯作者:
Andrews, DW
影响因子:
19
作者:
Green, D;Kroemer, G
通讯作者:
Kroemer, G
DOI:
10.1073/pnas.95.8.4516
发表时间:
1998-04-14
影响因子:
11.1
作者:
Deussing, J;Roth, W;Villadangos, JA
通讯作者:
Villadangos, JA
影响因子:
11.4
作者:
Heinrich, M;Wickel, M;Schütze, S
通讯作者:
Schütze, S