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Dystrophin-dependent and -independent AQP4 pools are expressed in the mouse brain

机译:肌营养不良蛋白依赖性和非依赖性AQP4池在小鼠大脑中表达

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摘要

In a recent study, we demonstrated that in the plasma membrane AQP4 is organized into several distinct large multisubunit complexes. In this study, we analysed whether these pools are similarly affected in dystrophin-deficient mice and immunolocalized the sites of dystrophin-dependent and -independent AQP4 pools. Western blot performed on two-dimensional Blue Native/SDS-PAGE membranes indicated that, among the AQP4 pools, it was mainly a large multisubunit complex that was specifically affected in dystrophin-deficient mice (DP71 and mdx3cv mice). This dystrophin-dependent AQP4 pool was immunolocalized in perivascular astrocytes, since it was found to be significantly altered in both types of dystrophin-deficient mice. Dystrophin-independent pools were immunolocalized in the granular cell layer of the cerebellum and in the subpial endfoot layer and ependymal cells in the brain. These data provide a better understanding on the association between AQP4 and the dystrophin-glycoprotein complex in the central nervous system. (C) 2008 Wiley-Liss, Inc.
机译:在最近的研究中,我们证明了质膜中的AQP4被组织成几个不同的大型多亚基复合物。在这项研究中,我们分析了这些池是否在肌营养不良蛋白缺陷型小鼠中受到类似的影响,并且对肌营养不良蛋白依赖性和非依赖性AQP4池进行了免疫定位。在二维Blue Native / SDS-PAGE膜上进行的蛋白质印迹表明,在AQP4库中,它主要是大型的多亚基复合物,在肌营养不良蛋白缺陷型小鼠(DP71和mdx3cv小鼠)中受到特定影响。该肌营养不良蛋白依赖性AQP4库在血管周围星形胶质细胞中进行了免疫定位,因为发现这两种类型的肌营养不良蛋白缺陷型小鼠均发生了显着改变。肌营养不良蛋白不依赖的池被免疫定位在小脑的颗粒细胞层中,脑中的足底下层和室管膜细胞中。这些数据为中枢神经系统中AQP4与肌营养不良蛋白-糖蛋白复合物之间的关联提供了更好的理解。 (C)2008 Wiley-Liss,Inc.

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