Structure–activity relationships of a small-molecule inhibitor of the PDZ domain of PICK1
作者:Anders Bach、Nicolai Stuhr-Hansen、Thor S. Thorsen、Nicolai Bork、Irina S. Moreira、Karla Frydenvang、Shahrokh Padrah、S. Brøgger Christensen、Kenneth L. Madsen、Harel Weinstein、Ulrik Gether、Kristian Strømgaard
DOI:10.1039/c0ob00025f
日期:——
Recently, we described the first small-molecule inhibitor, (E)-ethyl 2-cyano-3-(3,4-dichlorophenyl)acryloylcarbamate (1), of the PDZ domain of protein interacting with Cα-kinase 1 (PICK1), a potential drug target against brain ischemia, pain and cocaine addiction. Herein, we explore structureâactivity relationships of 1 by introducing subtle modifications of the acryloylcarbamate scaffold and variations of the substituents on this scaffold. The configuration around the double bond of 1 and analogues was settled by a combination of X-ray crystallography, NMR and density functional theory calculations. Thereby, docking studies were used to correlate biological affinities with structural considerations for ligandâprotein interactions. The most potent analogue obtained in this study showed an improvement in affinity compared to 1 and is currently a lead in further studies of PICK1 inhibition.
最近,我们描述了首个小分子抑制剂(E)-乙基2-氰基-3-(3,4-二氯苯基)丙烯酰氨基甲酸酯(1),它针对与Cα-激酶1相互作用的蛋白质的PDZ结构域(PICK1),这是对抗脑缺血、疼痛和可卡因成瘾的潜在药物靶点。在这里,我们通过对丙烯酰氨基甲酸酯框架的微小修改及其取代基的变化,探讨了1的结构-活性关系。1及其类似物的双键周围的构型通过X射线晶体学、核磁共振(NMR)和密度泛函理论计算进行了确定。因此,分子对接研究被用来将生物亲和力与配体-蛋白相互作用的结构考虑进行关联。本研究中获得的最强效的类似物与1相比显示出亲和力的提高,目前它是进一步研究PICK1抑制的领先候选者。