Novel bioluminescent binding assays for interaction studies of protein/peptide hormones with their receptors

Novel bioluminescent binding assays for interaction studies of protein/peptide hormones with their receptors
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用于蛋白质/肽激素与其受体相互作用研究的新型生物发光结合测定

DOI:
10.1007/s00726-016-2220-5
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发表时间:
2016-03
期刊:
影响因子:
3.5
通讯作者:
Guo, Zhan-Yun
Guo, Zhan-Yun
中科院分区:
生物学3区
文献类型:
--
作者:
Liu, Ya-Li;Guo, Zhan-Yun

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蛋白质/肽激素是最大的一类内源信号分子,通过与特定的细胞膜受体结合发挥各种生物学功能。为了研究这些激素及其受体之间的相互作用,定量配体-受体结合测定已广泛使用数十年。然而,这些测定通常依赖于使用放射性配体,这有一些主要缺点,并且只能在具有放射性材料许可证的实验室中使用。我们最近使用迄今为止已知的最亮的生物发光报告基因纳米荧光素酶 (NanoLuc) 开发了针对几种蛋白质/肽激素的新型生物发光结合测定法。 NanoLuc 报告基因可以化学缀合到蛋白质/肽激素的适当位置,也可以通过基因融合在蛋白质/肽激素的一个末端。与传统的放射性配体相比,这些生物发光配体具有更高的灵敏度、更好的安全性和更长的保质期,因此代表了一类用于定量受体结合测定的新型非放射性示踪剂。在本综述中,我们提供了一些设置生物发光结合测定的一般考虑因素和具体示例。这些技术将来可以应用于其他蛋白质/肽激素,以促进它们与其受体的相互作用研究。
Protein/peptide hormones are the largest group of endogenous signaling molecules and exert various biological functions by binding to specific cell membrane receptors. To study the interactions between these hormones and their receptors, quantitative ligand–receptor binding assays have been widely used for decades. However, the assays conventionally relied on the use of radioligands, which have some major drawbacks and can only be used in laboratories with a radioactive material license. We recently developed novel bioluminescent binding assays for several protein/peptide hormones using the brightest bioluminescent reporter known to date, nanoluciferase (NanoLuc). The NanoLuc reporter can be either chemically conjugated to an appropriate position, or genetically fused at one terminus, of protein/peptide hormones. Compared to conventional radioligands, these bioluminescent ligands have higher sensitivity, better safety, and longer shelf lives, and thus, represent a novel class of non-radioactive tracers for quantitative receptor binding assays. In the present review, we provide some general considerations and specific examples for setting up the bioluminescent binding assays. Such techniques can be applied to other protein/peptide hormones in future to facilitate their interaction studies with their receptors.
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