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The endothelial volume-regulated anion channel, VRAC [Review]

机译:内皮体积调节阴离子通道,VRAC [综述]

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We discuss in this short review properties of a volume-regulated anion channel that we have described in vascular endothelial cells. This channel, VRAC (volume-regulated anion channel) is outwardly rectifying with single channel conductances between 10-20pS for inward currents and 40-50pS for outward currents. VRAC is permeable for a wide range of anions, amino acids and organic osmolytes. The estimated pore diameter is approximately 1.1nm. VRAC is gated by a probably complex mechanism in which changes in ionic strength, tyrosine phosphorylation, the cytoskeletal organiser RhoA and possibly caveolin are essentially involved. The molecular candidate for this channel is still elusive. The functional impact of VRAC as a possible mechano-sensor in endothelium and as a regulatory component in the cell cycle, endothelial cell proliferation and possible angiogenesis will be discussed. Copyright (C) 2000 S. Karger AG Basel. [References: 60]
机译:我们在这篇简短的评论中讨论了我们在血管内皮细胞中描述的体积调节阴离子通道的特性。该通道VRAC(体积调节阴离子通道)通过单通道电导(用于内向电流在10-20pS和用于外向电流在40-50pS之间)进行向外整流。 VRAC可渗透各种阴离子,氨基酸和有机渗透物。估计的孔径约为1.1nm。 VRAC由可能复杂的机制控制,其中涉及离子强度,酪氨酸磷酸化,细胞骨架组织者RhoA以及可能的小窝蛋白的改变。该通道的分子候选物仍然难以捉摸。将讨论VRAC作为内皮中可能的机械传感器以及细胞周期,内皮细胞增殖和可能的血管生成中的调节成分的功能影响。版权所有(C)2000 S.Karger AG Basel。 [参考:60]

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