作者:Tobias A. Popp、Cynthia Tallant、Catherine Rogers、Oleg Fedorov、Paul E. Brennan、Susanne Müller、Stefan Knapp、Franz Bracher
DOI:10.1021/acs.jmedchem.6b00774
日期:2016.10.13
catalytic domain that is important for the targeting of CBP/P300 to chromatin and which offeres an opportunity for the development of protein–protein interaction inhibitors. Here we present the development of CBP/P300 bromodomain inhibitors with 2,3,4,5-tetrahydro-1,4-benzoxazepine backbone, an N-acetyl-lysine mimetic scaffold that led to the recent development of the chemical probe I-CBP112. We present
CBP(CREB(cAMP反应元件结合蛋白)结合蛋白(CREBBP))和P300(与腺病毒E1A相关的300 kDa蛋白)是两个密切相关的组蛋白乙酰转移酶(HATs),它们在基因转录的调控中起着关键作用。两种蛋白质均包含位于HAT催化域侧翼的溴结构域,这对于CBP / P300靶向染色质很重要,这为开发蛋白质-蛋白质相互作用抑制剂提供了机会。在这里,我们介绍CBP / P300溴结构域抑制剂与2,3,4,5-tetrahydro-1,4-benzoxazepine主链(N-乙酰基赖氨酸模拟支架,导致了化学探针I-CBP112的最新开发。我们介绍了该抑制剂类型的综合SAR以及最有效和选择性抑制剂TPOP146的靶细胞活性证明,该抑制剂对CBP具有134 nM的亲和力,对其他溴结构域具有出色的选择性。