Reshaping of the endoplasmic reticulum limits the rate for nuclear envelope formation.
Reshaping of the endoplasmic reticulum limits the rate for nuclear envelope formation.
复制标题
重塑内质网限制了核包膜形成的速率。
DOI:
10.1083/jcb.200805140
复制
发表时间:
2008-09-08
影响因子:
7.8
通讯作者:
Hetzer, Martin W.
中科院分区:
文献类型:
--
作者:
Anderson, Daniel J.;Hetzer, Martin W.
During mitosis in metazoans, segregated chromosomes become enclosed by the nuclear envelope (NE), a double membrane that is continuous with the endoplasmic reticulum (ER). Recent in vitro data suggest that NE formation occurs by chromatin-mediated reorganization of the tubular ER; however, the basic principles of such a membrane-reshaping process remain uncharacterized. Here, we present a quantitative analysis of nuclear membrane assembly in mammalian cells using time-lapse microscopy. From the initial recruitment of ER tubules to chromatin, the formation of a membrane-enclosed, transport-competent nucleus occurs within ∼12 min. Overexpression of the ER tubule-forming proteins reticulon 3, reticulon 4, and DP1 inhibits NE formation and nuclear expansion, whereas their knockdown accelerates nuclear assembly. This suggests that the transition from membrane tubules to sheets is rate-limiting for nuclear assembly. Our results provide evidence that ER-shaping proteins are directly involved in the reconstruction of the nuclear compartment and that morphological restructuring of the ER is the principal mechanism of NE formation in vivo.
登录
查看更多内容
影响因子:
7.8
作者:
BOMAN, AL;DELANNOY, MR;WILSON, KL
通讯作者:
WILSON, KL
影响因子:
11.4
作者:
Ribbeck, K;Görlich, D
通讯作者:
Görlich, D
影响因子:
7.8
作者:
Crisp, M;Liu, Q;Hodzic, D
通讯作者:
Hodzic, D
DOI:
10.1083/jcb.74.2.492
发表时间:
1977-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Maul GG
通讯作者:
Maul GG
影响因子:
56.9
作者:
D'Angelo, MA;Anderson, DJ;Hetzer, MW
通讯作者:
Hetzer, MW