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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Role of Rho-GTPases and their regulatory proteins in glomerular podocyte function
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Role of Rho-GTPases and their regulatory proteins in glomerular podocyte function

机译:Rho-GTPases及其调节蛋白在肾小球足细胞功能中的作用

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摘要

Podocytes play a critical role in maintaining glomerular permselectivity. It has been long recognized that their intricate actin-based structures are tightly associated with their normal function; however, the precise mechanisms by which podocytes form and maintain their complex structure had been poorly understood until the intensive investigations on podocyte biology began in 1998, triggered by the breakthrough discovery of nephrin. This review summarizes the recent discoveries of the molecular mechanisms by which the actin cytoskeleton is regulated in podocytes. A particular focus will be on the role of the Rho-family of small GTPases, represented by RhoA, Rac1, and Cdc42. Rho-GTPases are known for their versatile cellular functions, most importantly for the actin regulatory roles. We will also discuss the potential roles of the 3 groups of proteins known to regulate Rho-GTPases, namely GTPase-activating proteins, guanine nucleotide exchange factors, and guanine nucleotide dissociation inhibitors.
机译:足细胞在维持肾小球通透性中起关键作用。长期以来,人们一直认识到它们复杂的基于肌动蛋白的结构与其正常功能紧密相关。然而,直到1998年因肾素的突破性发现而开始对足细胞生物学进行深入研究之前,人们才对足细胞形成和维持其复杂结构的确切机制了解甚少。这篇综述总结了在足细胞中调节肌动蛋白细胞骨架的分子机制的最新发现。将特别关注由RhoA,Rac1和Cdc42代表的小GTP酶的Rho家族的作用。 Rho-GTPase以其多功能的细胞功能而闻名,最重要的是肌动蛋白调节作用。我们还将讨论已知可调节Rho-GTPases的3组蛋白质的潜在作用,即GTPase激活蛋白,鸟嘌呤核苷酸交换因子和鸟嘌呤核苷酸解离抑制剂。

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