Identification and Optimization of Anthranilic Acid Based Inhibitors of Replication Protein A
作者:James D. Patrone、Nicholas F. Pelz、Brittney S. Bates、Elaine M. Souza-Fagundes、Bhavatarini Vangamudi、Demarco V. Camper、Alexey G. Kuznetsov、Carrie F. Browning、Michael D. Feldkamp、Andreas O. Frank、Benjamin A. Gilston、Edward T. Olejniczak、Olivia W. Rossanese、Alex G. Waterson、Walter J. Chazin、Stephen W. Fesik
DOI:10.1002/cmdc.201500479
日期:2016.4.19
90 hit compounds were identified. From these initial hits, an anthranilic acid based series was optimized by using a structure-guided iterative medicinal chemistry approach to yield a cell-penetrant compound that binds to RPA70N with an affinity of 812 nm. This compound, 2-(3- (N-(3,4-dichlorophenyl)sulfamoyl)-4-methylbenzamido)benzoic acid (20 c), is capable of inhibiting PPIs mediated by this domain
复制蛋白A(RPA)是必不可少的单链DNA(ssDNA)结合蛋白,可通过其70N结构域介导的蛋白-蛋白相互作用(PPI)引发DNA损伤反应途径。可以特异性破坏这些相互作用的化学探针的鉴定和使用对于验证RPA作为癌症靶标非常重要。进行了高通量筛选(HTS)以识别新的化学实体,并鉴定了90种命中化合物。从这些最初的命中,通过使用结构指导的迭代药物化学方法优化了基于邻氨基苯甲酸的系列,以产生细胞渗透性化合物,其以812 nm的亲和力与RPA70N结合。该化合物2-(3-(N-(N-(3,4-二氯苯基)氨磺酰基)-4-甲基苯甲酰胺基)苯甲酸(20 c),能够抑制由该结构域介导的PPI。