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Arf GTP酶激活蛋白及其在细胞迁移和侵袭中的潜在作用。

Arf GTPase-activating proteins and their potential role in cell migration and invasion.

作者信息

Campa Fanny, Randazzo Paul A

机构信息

Laboratory of Cellular and Molecular Biology, National Cancer Institute, Bethesda, Maryland 20892-4256, USA.

出版信息

Cell Adh Migr. 2008 Oct-Dec;2(4):258-62. doi: 10.4161/cam.2.4.6959. Epub 2008 Oct 9.

Abstract

Cell migration is central to normal physiology in embryogenesis, the inflammatory response and wound healing. In addition, the acquisition of a motile and invasive phenotype is an important step in the development of tumors and metastasis. Arf GTPase-activating proteins (GAPs) are nonredundant regulators of specialized membrane surfaces implicated in cell migration. Part of Arf GAP function is mediated by regulating the ADP ribosylation factor (Arf) family GTP-binding proteins. However, Arf GAPs can also function independently of their GAP enzymatic activity, in some cases working as Arf effectors. In this commentary, we discuss examples of Arf GAPs that function either as regulators of Arfs or independently of the GTPase activity to regulate membrane structures that mediate cell adhesion and movement.

摘要

细胞迁移在胚胎发育、炎症反应和伤口愈合等正常生理过程中至关重要。此外,获得运动性和侵袭性表型是肿瘤发生和转移过程中的重要一步。Arf鸟苷三磷酸酶激活蛋白(GAPs)是参与细胞迁移的特殊膜表面的非冗余调节因子。Arf GAP功能的一部分是通过调节ADP核糖基化因子(Arf)家族的GTP结合蛋白来介导的。然而,Arf GAPs也可以独立于其GAP酶活性发挥作用,在某些情况下作为Arf效应器发挥作用。在本评论中,我们讨论了Arf GAPs的例子,它们要么作为Arfs的调节因子发挥作用,要么独立于GTPase活性来调节介导细胞粘附和运动的膜结构。

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