Targeting of membrane transporters in renal epithelia: when cell biology meets physiology.

Targeting of membrane transporters in renal epithelia: when cell biology meets physiology.
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肾上皮细胞膜转运蛋白的靶向:当细胞生物学遇到生理学时。

DOI:
10.1152/ajprenal.2000.278.2.f192
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发表时间:
2000
期刊:
American journal of physiology. Renal physiology
影响因子:
--
通讯作者:
Brown,D
Brown,D
中科院分区:
--
文献类型:
--
作者:
Brown,D

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肾上皮细胞具有高度专业化的转运机制,这种机制在许多小管段之间以及某些区域存在的不同细胞类型之间有所不同。这篇简短的综述的目的是研究参与这些分化的细胞功能的膜蛋白被寻址、分类和递送到上皮细胞的特定膜域的一些主要的细胞内机制。解开这些过程不仅对于我们理解正常的细胞功能是重要的,而且对于解释新产生的关于遗传和获得性转运蛋白异常的分子和细胞信息的病理生理功能障碍也是至关重要的。其中包括蛋白质信号的分类、细胞骨架的作用、囊泡外壳蛋白、融合机制以及循环蛋白质的外吞和内吞作用。在这篇综述中,肾上皮细胞中这些事件的例子被强调,并且与肾脏的生理学有关。
Epithelial cells in the kidney have highly specialized transport mechanisms that differ among the many tubule segments, and among the different cell types that are present in some regions. The purpose of this brief review is to examine some of the major intracellular mechanisms by which the membrane proteins that participate in these differentiated cellular functions are addressed, sorted, and delivered to specific membrane domains of epithelial cells. Unraveling these processes is important not only for our understanding of normal cellular function but is also critical for the interpretation of pathophysiological dysfunction in the context of newly generated molecular and cellular information concerning hereditary and acquired transporter abnormalities. Among the topics covered are sorting signals on proteins, role of the cytoskeleton, vesicle coat proteins, the fusion machinery, and exo- and endocytosis of recycling proteins. Examples of these events in renal epithelial cells are highlighted throughout this review and are related to the physiology of the kidney.
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