Subcellular Organization of GPCR Signaling.

Subcellular Organization of GPCR Signaling.
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DOI:
10.1016/j.tips.2017.11.009
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发表时间:
2018-03
影响因子:
13.8
通讯作者:
von Zastrow M
von Zastrow M
中科院分区:
医学1区
文献类型:
--
作者:
Eichel K;von Zastrow M

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G蛋白偶联受体(gpcr)包括大量不同种类的信号转导受体,它们经历动态和异构体特异性的膜运输。因此,gpcr具有启动或调节来自多个膜位置的信号反应的内在潜力。本综述讨论了哺乳动物细胞中GPCR功能亚细胞组织的新见解,重点关注异源三聚体G蛋白和β-阻滞蛋白的信号转导。我们总结了最近的证据表明,GPCR介导的G蛋白激活不仅发生在质膜上,也发生在核内体和高尔基膜上,并且β-阻滞蛋白依赖的信号可以在与配体激活的GPCR分离后,通过β-阻滞蛋白转运到网格蛋白包覆的孔中,从质膜上转导。
G protein-coupled receptors (GPCRs) comprise a large and diverse class of signal-transducing receptors that undergo dynamic and isoform-specific membrane trafficking. GPCRs thus have an inherent potential to initiate or regulate signaling reactions from multiple membrane locations. The present review discusses emerging insight to the subcellular organization of GPCR function in mammalian cells, focusing on signaling transduced by heterotrimeric G proteins and β-arrestins. We summarize recent evidence indicating that GPCR-mediated activation of G proteins occurs not only from the plasma membrane but also from endosomes and Golgi membranes, and that β-arrestin-dependent signaling can be transduced from the plasma membrane by β-arrestin trafficking to clathrin-coated pits after dissociating from a ligand-activated GPCR.
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