Ligand-Biased and Probe-Dependent Modulation of Chemokine Receptor CXCR3 Signaling by Negative Allosteric Modulators
作者:Viachaslau Bernat、Regine Brox、Markus R. Heinrich、Yves P. Auberson、Nuska Tschammer
DOI:10.1002/cmdc.201402507
日期:2015.3
recognized as an essential feature of synthetic ligands that target G protein‐coupled receptors (GPCRs). The CXC chemokine receptor 3 (CXCR3) is an outstanding platform to study various aspects of biased signaling, because nature itself uses functional selectivity to manipulate receptor signaling. At the same time, CXCR3 is an attractive therapeutic target in the treatment of autoimmune diseases and cancer
在过去的十年中,功能选择性(或配体偏倚)已从一种特殊现象演变为公认的靶向G蛋白偶联受体(GPCR)的合成配体的基本特征。CXC趋化因子受体3(CXCR3)是研究偏向信号传导各个方面的出色平台,因为自然界本身利用功能选择性来操纵受体信号传导。同时,CXCR3在自身免疫性疾病和癌症的治疗中是有吸引力的治疗靶标。在这里,我们报告发现8-氮杂喹唑啉酮衍生物(N- 1- [3-(4-乙氧基苯基)-4-氧代-3,4-二氢吡啶并[2,3 - d ]嘧啶-2-基]乙基} -4-(4-氟丁氧基)-N -((1-甲基哌啶-4-基)甲基]丁酰胺,1 b)可以抑制CXC趋化因子11(CXCL11)依赖性G蛋白的活化,而对β-arrestin的募集具有187倍的选择性。该化合物还表现出探针依赖性活性,即与CXCL10介导的G蛋白活化相比,它具有12倍的选择性抑制CXCL11。连同先前报道的来自本组的偏向负变构调节