Microtubules do not promote mitotic slippage when the spindle assembly checkpoint cannot be satisfied.
Microtubules do not promote mitotic slippage when the spindle assembly checkpoint cannot be satisfied.
复制标题
DOI:
10.1083/jcb.200805072
复制
发表时间:
2008-08-25
期刊:
影响因子:
--
通讯作者:
Rieder CL
中科院分区:
文献类型:
--
作者:
Brito DA;Yang Z;Rieder CL
When the spindle assembly checkpoint (SAC) cannot be satisfied, cells exit mitosis via mitotic slippage. In microtubule (MT) poisons, slippage requires cyclin B proteolysis, and it appears to be accelerated in drug concentrations that allow some MT assembly. To determine if MTs accelerate slippage, we followed mitosis in human RPE-1 cells exposed to various spindle poisons. At 37°C, the duration of mitosis in nocodazole, colcemid, or vinblastine concentrations that inhibit MT assembly varied from 20 to 30 h, revealing that different MT poisons differentially depress the cyclin B destruction rate during slippage. The duration of mitosis in Eg5 inhibitors, which induce monopolar spindles without disrupting MT dynamics, was the same as in cells lacking MTs. Thus, in the presence of numerous unattached kinetochores, MTs do not accelerate slippage. Finally, compared with cells lacking MTs, exit from mitosis is accelerated over a range of spindle poison concentrations that allow MT assembly because the SAC becomes satisfied on abnormal spindles and not because slippage is accelerated.
登录
查看更多内容
DOI:
10.1083/jcb.116.3.707
发表时间:
1992-02
期刊:
The Journal of cell biology
影响因子:
--
作者:
Hunt T;Luca FC;Ruderman JV
通讯作者:
Ruderman JV
DOI:
10.1083/jcb.127.3.789
发表时间:
1994-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Andreassen PR;Margolis RL
通讯作者:
Margolis RL
影响因子:
5.3
作者:
Lanni, JS;Jacks, T
通讯作者:
Jacks, T
影响因子:
21.3
作者:
Acquaviva, C;Herzog, F;Pines, J
通讯作者:
Pines, J
DOI:
10.1083/jcb.200208092
发表时间:
2003-04-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Hauf S;Cole RW;LaTerra S;Zimmer C;Schnapp G;Walter R;Heckel A;van Meel J;Rieder CL;Peters JM
通讯作者:
Peters JM