Structural Basis for Achieving GSK-3β Inhibition with High Potency, Selectivity, and Brain Exposure for Positron Emission Tomography Imaging and Drug Discovery
作者:Vadim Bernard-Gauthier、Andrew V. Mossine、Ashley Knight、Debasis Patnaik、Wen-Ning Zhao、Chialin Cheng、Hema S. Krishnan、Lucius L. Xuan、Peter S. Chindavong、Surya A. Reis、Jinshan Michael Chen、Xia Shao、Jenelle Stauff、Janna Arteaga、Phillip Sherman、Nicolas Salem、David Bonsall、Brenda Amaral、Cassis Varlow、Lisa Wells、Laurent Martarello、Shil Patel、Steven H. Liang、Ravi G. Kurumbail、Stephen J. Haggarty、Peter J. H. Scott、Neil Vasdev
DOI:10.1021/acs.jmedchem.9b01030
日期:2019.11.14
Using structure-guided design, several cell based assays, and microdosed positron emission tomography (PET) imaging, we identified a series of highly potent, selective, and brain-penetrant oxazole-4-carboxamide-based inhibitors of glycogen synthase kinase-3 (GSK-3). An isotopologue of our first-generation lead, [3H]PF-367, demonstrates selective and specific target engagement in vitro, irrespective
使用结构指导的设计,几种基于细胞的分析方法以及微剂量正电子发射断层扫描(PET)成像,我们鉴定了一系列高效,选择性和脑渗透性的基于oxazole-4-羧酰胺的糖原合酶激酶-3抑制剂( GSK-3)。我们的第一代铅[ 3 H] PF-367的同位素同源物证明了其在体外的选择性和特异性靶标结合作用,而与激活状态无关。我们在Tg2576阿尔茨海默氏病(AD)中发现了广泛存在的GSK-3特异性放射性配体结合,暗示了这些化合物在AD诊断中的应用,并确定了[ 11 C] OCM-44作为我们的主要GSK-3放射性示踪剂,PET的大脑摄取达到了最佳。在非人类灵长类动物中成像。对GSK-3β同工酶的选择性进行了评估,以揭示最有效的OCM-51(IC50 = 0.030 nM)和迄今已知的选择性(> 10倍GSK-3β/GSK-3α)GSK-3β抑制剂。在细胞中观察到CRMP2 T514的抑制和tau磷酸化,以及对抗WNT