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Biochemistry
通过放射性标记的GTP结合测量G蛋白偶联的受体信号
通过放射性标记的GTP结合测量G蛋白偶联的受体信号
JoVE Journal
Biochemistry
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JoVE Journal Biochemistry
Measuring G-protein-coupled Receptor Signaling via Radio-labeled GTP Binding

通过放射性标记的GTP结合测量G蛋白偶联的受体信号

Full Text
17,272 Views
10:13 min
June 9, 2017

DOI: 10.3791/55561-v

Chirag Vasavda*1, Nicholas W. Zaccor*1, Paul C. Scherer1, Charlotte J. Sumner1,2, Solomon H. Snyder1,3,4

1The Solomon H. Snyder Department of Neuroscience,Johns Hopkins University School of Medicine, 2Department of Neurology and neurosurgery,Johns Hopkins University School of Medicine, 3Departments of Pharmacology and Molecular Sciences,Johns Hopkins University School of Medicine, 4Department of Psychiatry and Behavioral Sciences,Johns Hopkins University School of Medicine

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Please note that some of the translations on this page are AI generated. Click here for the English version.

三磷酸鸟苷(GTP)结合是G蛋白偶联受体(GPCR)激活中最早的事件之一。该方案描述了如何通过监测放射性标记的GTP类似物[ 35 S]鸟苷-5'-O-(3-硫代)三磷酸([ 35 S]GTPγS)的结合在药理学上表征特异性GPCR-配体相互作用对感兴趣配体的反应。

该程序的总体目标是分离含有 G 蛋白偶联受体或 GPCR 的细胞膜,并使用功能性 GTP 结合论文研究 GPCR 药理学。该方法可以帮助回答生物化学领域中有关已建立或孤立的 G 蛋白偶联受体的药理学特性的关键问题。主要优点是它简单、快速,并且测量 G 蛋白偶联受体信号传导中最近端的事件。

首先,将人胚胎肾细胞接种在 10 mL 完整 DMEM 中的 10 cm 组织培养板上。在 37 摄氏度和 5% 二氧化碳下孵育细胞,直到达到 70% 至 80% 汇合。孵育后,根据制造商的指南,使用合适的转染试剂用 HAMOR1 转染细胞。

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