Kinesin 5B (KIF5B) is required for progression through female meiosis and proper chromosomal segregation in mitotic cells.

Kinesin 5B (KIF5B) is required for progression through female meiosis and proper chromosomal segregation in mitotic cells.
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DOI:
10.1371/journal.pone.0058585
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Sweasy JB
Sweasy JB
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kidane D;Sakkas D;Nottoli T;McGrath J;Sweasy JB

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细胞分裂过程中染色体分离的保真度对于维持染色体稳定性以预防癌症和出生缺陷至关重要。虽然一些纺锤体相关的分子马达已被证明对细胞分裂至关重要,但只有少数染色体臂相关的马达已被描述。在这里,我们研究了Kif5b在雌性小鼠减数分裂细胞发育和有丝分裂细胞分裂中的作用。RNA干扰(RNAi)介导的小鼠卵母细胞中Kif5b的沉默可导致生发囊泡破裂(GVBD)和第一极体挤压(PBE)失败的显著延迟。在有丝分裂细胞中,Kif5b基因的敲低导致中心体扩增和染色体分离缺陷。这些数据表明,在女性减数分裂细胞发育和有丝分裂细胞分裂的早期阶段,KIF5B在抑制染色体不稳定性方面是至关重要的。
The fidelity of chromosomal segregation during cell division is important to maintain chromosomal stability in order to prevent cancer and birth defects. Although several spindle-associated molecular motors have been shown to be essential for cell division, only a few chromosome arm-associated motors have been described. Here, we investigated the role of Kinesin 5b (Kif5b) during female mouse meiotic cell development and mitotic cell division. RNA interference (RNAi)-mediated silencing of Kif5b in mouse oocytes induced significant delay in germinal vesicle breakdown (GVBD) and failure in extrusion of the first polar body (PBE). In mitotic cells, knockdown of Kif5b leads to centrosome amplification and a chromosomal segregation defect. These data suggest that KIF5B is critical in suppressing chromosomal instability at the early stages of female meiotic cell development and mitotic cell division.
一种用于细胞器转运的新型微管运动蛋白(KIF4),其表达受到发育的调节。
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