Primary cilia of human endothelial cells disassemble under laminar shear stress.

Primary cilia of human endothelial cells disassemble under laminar shear stress.
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人内皮细胞的原发性纤毛在层状剪切应力下拆卸。

DOI:
10.1083/jcb.200312133
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发表时间:
2004-03-15
影响因子:
7.8
通讯作者:
Piperno, Gianni
Piperno, Gianni
中科院分区:
生物学1区
文献类型:
--
作者:
Iomini, Carlo;Tejada, Karla;Mo, Wenjun;Vaananen, Heikki;Piperno, Gianni

文献摘要

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我们通过乙酰-α-微管蛋白和毛细血管形态发生基因 1 产物 (CMG-1) 的抗体鉴定了培养的人脐静脉内皮细胞 (HUVEC) 中的初级纤毛和中心体,毛细血管形态发生基因 1 产物 (CMG-1) 是衣藻中鞭毛内转运 (IFT) 蛋白 IFT-71 的人类同源物。 CMG-1 存在于间期时沿 HUVEC 初级纤毛的颗粒中,以及间期和有丝分裂时最古老的基体/中心粒周围的颗粒中。为了研究初级纤毛和中心体对机械刺激的反应,我们将培养的 HUVEC 暴露于层流剪切应力 (LSS)。在LSS下,所有初级纤毛都被分解,并且中心体被剥夺了CMG-1。我们得出的结论是,暴露于 LSS 会终止培养内皮细胞的 IFT。
We identified primary cilia and centrosomes in cultured human umbilical vein endothelial cells (HUVEC) by antibodies to acetyl-α-tubulin and capillary morphogenesis gene-1 product (CMG-1), a human homologue of the intraflagellar transport (IFT) protein IFT-71 in Chlamydomonas. CMG-1 was present in particles along primary cilia of HUVEC at interphase and around the oldest basal body/centriole at interphase and mitosis. To study the response of primary cilia and centrosomes to mechanical stimuli, we exposed cultured HUVEC to laminar shear stress (LSS). Under LSS, all primary cilia disassembled, and centrosomes were deprived of CMG-1. We conclude that the exposure to LSS ends the IFT in cultured endothelial cells.