RBM14 prevents assembly of centriolar protein complexes and maintains mitotic spindle integrity.
RBM14 prevents assembly of centriolar protein complexes and maintains mitotic spindle integrity.
复制标题
DOI:
10.15252/embj.201488979
复制
发表时间:
2015-01-02
期刊:
影响因子:
--
通讯作者:
Kitagawa D
中科院分区:
文献类型:
--
作者:
Shiratsuchi G;Takaoka K;Ashikawa T;Hamada H;Kitagawa D
Formation of a new centriole adjacent to a pre-existing centriole occurs only once per cell cycle. Despite being crucial for genome integrity, the mechanisms controlling centriole biogenesis remain elusive. Here, we identify RBM14 as a novel suppressor of assembly of centriolar protein complexes. Depletion of RBM14 in human cells induces ectopic formation of centriolar protein complexes through function of the STIL/CPAP complex. Intriguingly, the formation of such structures seems not to require the cartwheel structure that normally acts as a scaffold for centriole formation, whereas they can retain pericentriolar material and microtubule nucleation activity. Moreover, we find that, upon RBM14 depletion, a part of the ectopic centriolar protein complexes in turn assemble into structures more akin to centrioles, presumably by incorporating HsSAS-6, a cartwheel component, and cause multipolar spindle formation. We further demonstrate that such structures assemble in the cytoplasm even in the presence of pre-existing centrioles. This study sheds light on the possibility that ectopic formation of aberrant structures related to centrioles may contribute to genome instability and tumorigenesis.
登录
查看更多内容
影响因子:
64.8
作者:
Dzhindzhev, Nikola S.;Yu, Quan D.;Glover, David M.
通讯作者:
Glover, David M.
影响因子:
11.8
作者:
Kleylein-Sohn, Julia;Westendorf, Jens;Nigg, Erich A.
通讯作者:
Nigg, Erich A.
影响因子:
3.3
作者:
Culver, Brady P.;Meehl, Janet B.;Winey, Mark
通讯作者:
Winey, Mark
影响因子:
5.3
作者:
Auboeuf, D;Dowhan, DH;O'Malley, BW
通讯作者:
O'Malley, BW
影响因子:
11.8
作者:
Chen, ZH;Indjeian, VB;Dynlacht, BD
通讯作者:
Dynlacht, BD