5′-Substituted Amiloride Derivatives as Allosteric Modulators Binding in the Sodium Ion Pocket of the Adenosine A<sub>2A</sub> Receptor
作者:Arnault Massink、Julien Louvel、Ilze Adlere、Corine van Veen、Berend J. H. Huisman、Gabrielle S. Dijksteel、Dong Guo、Eelke B. Lenselink、Benjamin J. Buckley、Hayden Matthews、Marie Ranson、Michael Kelso、Adriaan P. IJzerman
DOI:10.1021/acs.jmedchem.6b00142
日期:2016.5.26
many G protein-coupled receptors (GPCRs). Amiloride 1 and 5-(N,N-hexamethylene)amiloride 2 (HMA) supposedly bind in this sodium ion site and can influence orthosteric ligand binding. The availability of a high-resolution X-ray crystal structure of the human adenosine A2A receptor (hA2AAR), in which the allosteric sodium ion site was elucidated, makes it an appropriate model receptor for investigating the
钠离子位点是许多G蛋白偶联受体(GPCR)中保守的变构位点。据推测,阿米洛利1和5-(N,N-六亚甲基)阿米洛利2(HMA)在该钠离子位点结合,并可能影响正构配体的结合。阐明了变构钠离子位点的人腺苷A 2A受体(hA 2A AR)的高分辨率X射线晶体结构的可用性使其成为研究变构位点的合适模型受体。在这项研究中,我们报告了新型5'-取代的阿米洛利衍生物hA 2A的合成和评估AR变构拮抗剂。通过阿米洛利衍生物取代正构放射性配体[ 3 H] 4-(2-((7-氨基-2-(呋喃-2-基)-[1,2,4]三唑[1]从野生型和钠离子位点W246A突变体hA 2A AR获得的5-,5- a ]-[1,3,5]三嗪-5-基)氨基)乙基)苯酚([ 3 H] ZM-241,385)。发现4-乙氧基苯乙基取代的阿米洛利12l比阿米洛利和HMA都更有效,并且野生型和突变受体之间的效力转移证实了其可能与钠离子位点结合。