ER shaping proteins regulate mitochondrial fission, outer membrane permeabilization and apoptosis
ER shaping proteins regulate mitochondrial fission, outer membrane permeabilization and apoptosis
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ER 塑造蛋白调节线粒体裂变、外膜透化和细胞凋亡
DOI:
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
S. Varadarajan
中科院分区:
文献类型:
--
作者:
M. Milani;G. Cohen;S. Varadarajan
The mitochondrial fission machinery, comprising a dynamin-related GTPase, DRP-1, is crucial for the regulation of mitochondrial membrane dynamics. Recent reports suggest that the tubular architecture of the endoplasmic reticulum (ER) marks the constriction sites on the mitochondria to facilitate DRP-1-mediated mitochondrial fission. However, the role of several ER shaping proteins that maintain the elaborate network of tubes and sheets in mitochondrial constriction and fission is not yet known. In this report, we demonstrate that modulation of the expression levels of key ER shaping proteins, namely Reticulon1 (RTN-1), Reticulon 4 (RTN-4), Lunapark-1 (LNP-1) and CLIMP-63, markedly decreased the extent of mitochondrial fission mediated by BH3 mimetics, despite no detectable changes in DRP-1 recruitment to the mitochondria. Furthermore, modulation of ER shaping proteins significantly decreased other hallmarks of apoptosis, such as mitochondrial outer membrane permeabilization, caspase activation and phosphatidylserine externalization, and functioned independently of mitochondrial cristae remodeling, thus demonstrating a requirement of ER shaping proteins and ER structural integrity for the efficient execution of the instrinsic apoptotic pathway.
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DOI:
10.1056/nejmoa1513257
发表时间:
2016-01-28
期刊:
The New England journal of medicine
影响因子:
--
作者:
Roberts AW;Davids MS;Pagel JM;Kahl BS;Puvvada SD;Gerecitano JF;Kipps TJ;Anderson MA;Brown JR;Gressick L;Wong S;Dunbar M;Zhu M;Desai MB;Cerri E;Heitner Enschede S;Humerickhouse RA;Wierda WG;Seymour JF
通讯作者:
Seymour JF
影响因子:
4.8
作者:
S. Varadarajan;M. Butterworth;Jun Wei;M. Pellecchia;D. Dinsdale;G. Cohen
通讯作者:
S. Varadarajan;M. Butterworth;Jun Wei;M. Pellecchia;D. Dinsdale;G. Cohen
影响因子:
11.8
作者:
Scorrano, L;Ashiya, M;Korsmeyer, SJ
通讯作者:
Korsmeyer, SJ
影响因子:
11.8
作者:
Frank, S;Gaume, B;Youle, RJ
通讯作者:
Youle, RJ