Cep126 is required for pericentriolar satellite localisation to the centrosome and for primary cilium formation.

Cep126 is required for pericentriolar satellite localisation to the centrosome and for primary cilium formation.
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DOI:
10.1111/boc.201300087
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发表时间:
2014-08
影响因子:
2.7
通讯作者:
Colanzi A
Colanzi A
中科院分区:
生物学4区
文献类型:
--
作者:
Bonavita R;Walas D;Brown AK;Luini A;Stephens DJ;Colanzi A

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中心体是动物细胞的主要微管组织中心,在细胞分裂、细胞极性和细胞内运输等基本细胞功能中起着至关重要的作用。造成这种情况的机制尚未完全了解。特征不明显的蛋白CEP126定位于中心体,中心周围卫星和初级纤毛的基部。抑制CEP126的表达导致核中心周围卫星的分散和微管径向组织的破坏,并诱导有丝分裂纺锤体的破坏。此外,在hTERT-RPE-1和IMCD3细胞中,CEP126缺失或CEP126截断突变体的转染会损害初级纤毛的形成。我们提出CEP126是中心体微管组织的调节剂,通过调节中心周围卫星的运输,从而调节细胞结构的组织。
The centrosome is the primary microtubule-organising centre of animal cells and it has crucial roles in several fundamental cellular functions, including cell division, cell polarity, and intracellular transport. The mechanisms responsible for this are not completely understood. The poorly characterised protein CEP126 localises to the centrosome, pericentriolar satellites and the base of the primary cilium. Suppression of CEP126 expression results in dispersion of the pericentriolar satellites and disruption of the radial organisation of the microtubules, and induces disorganisation of the mitotic spindle. Moreover, CEP126 depletion or the transfection of a CEP126 truncation mutant in hTERT-RPE-1 and IMCD3 cells impairs the formation of the primary cilium. We propose that CEP126 is a regulator of microtubule organisation at the centrosome that acts through modulation of the transport of pericentriolar satellites, and consequently, of the organisation of cell structure.
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