A requirement for MAP kinase in the assembly and maintenance of the mitotic spindle.

A requirement for MAP kinase in the assembly and maintenance of the mitotic spindle.
复制标题

DOI:
10.1083/jcb.200304144
复制
发表时间:
2003-06-23
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Guadagno TM
Guadagno TM
中科院分区:
其他
文献类型:
--
作者:
Horne MM;Guadagno TM

文献摘要

参考文献

被引文献

相似文献

间接证据表明微管相关蛋白(MAP)激酶可能参与纺锤体调节。为了直接测试这一点,我们询问爪蟾卵提取物中纺锤体组装是否需要 MAP 激酶。内源性 p42 MAP 激酶的抑制或消耗会导致类似于紫苑或半纺锤体的缺陷纺锤体结构。同样,在 aster 测定中测量到微管长度和聚合的增加,表明 MAP 激酶在调节微管动力学中的作用。与此一致的是,用特定的 MAP 激酶激酶抑制剂或 MAP 激酶磷酸酶处理提取物导致双极纺锤体快速分解成大紫苑。最后,我们报告说,在缺乏 MAP 激酶信号传导的情况下,有丝分裂进展导致 NIH 3T3 细胞中的多个纺锤体异常。因此,我们认为 MAP 激酶是有丝分裂纺锤体的关键调节因子。
Circumstantial evidence has suggested the possibility of microtubule-associated protein (MAP) kinase's involvement in spindle regulation. To test this directly, we asked whether MAP kinase was required for spindle assembly in Xenopus egg extracts. Either the inhibition or the depletion of endogenous p42 MAP kinase resulted in defective spindle structures resembling asters or half-spindles. Likewise, an increase in the length and polymerization of microtubules was measured in aster assays suggesting a role for MAP kinase in regulating microtubule dynamics. Consistent with this, treatment of extracts with either a specific MAP kinase kinase inhibitor or a MAP kinase phosphatase resulted in the rapid disassembly of bipolar spindles into large asters. Finally, we report that mitotic progression in the absence of MAP kinase signaling led to multiple spindle abnormalities in NIH 3T3 cells. We therefore propose that MAP kinase is a key regulator of the mitotic spindle.
DOI: 10.1016/s0960-9822(00)00425-5
发表时间: 2000-04-20
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Gross, SD;Schwab, MS;Maller, JL
通讯作者: Maller, JL
DOI: 10.1128/mcb.22.20.7226-7241.2002
发表时间: 2002-10-01
影响因子: 5.3
作者:
Roberts, EC;Shapiro, PS;Ahn, NG
通讯作者: Ahn, NG
DOI: 10.1073/pnas.92.19.8881
发表时间: 1995-09-12
影响因子: 11.1
作者:
RESZKA, AA;SEGER, R;FISCHER, EH
通讯作者: FISCHER, EH
DOI: 10.1083/jcb.200202052
发表时间: 2002-05-13
期刊: The Journal of cell biology
影响因子: --
作者:
Lefebvre C;Terret ME;Djiane A;Rassinier P;Maro B;Verlhac MH
通讯作者: Verlhac MH
DOI: 10.1016/s0960-9822(01)00045-8
发表时间: 2001-02-06
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Schwab, MS;Roberts, BT;Maller, JL
通讯作者: Maller, JL