Structure-Based Design of a Bromodomain and Extraterminal Domain (BET) Inhibitor Selective for the N-Terminal Bromodomains That Retains an Anti-inflammatory and Antiproliferative Phenotype
作者:Christopher R. Wellaway、Paul Bamborough、Sharon G. Bernard、Chun-wa Chung、Peter D. Craggs、Leanne Cutler、Emmanuel H. Demont、John P. Evans、Laurie Gordon、Bhumika Karamshi、Antonia J. Lewis、Matthew J. Lindon、Darren J. Mitchell、Inmaculada Rioja、Peter E. Soden、Simon Taylor、Robert J. Watson、Rob Willis、James M. Woolven、Beata S. Wyspiańska、William J. Kerr、Rab K. Prinjha
DOI:10.1021/acs.jmedchem.0c00566
日期:2020.9.10
The bromodomain and extraterminal domain (BET) family of epigenetic regulators comprises four proteins (BRD2, BRD3, BRD4, BRDT), each containing tandem bromodomains. To date, small molecule inhibitors of these proteins typically bind all eight bromodomains of the family with similar affinity, resulting in a diverse range of biological effects. To enable further understanding of the broad phenotype
表观遗传调节物的溴结构域和末端外结构域(BET)家族包含四个蛋白质(BRD2,BRD3,BRD4,BRDT),每个蛋白都包含串联的溴结构域。迄今为止,这些蛋白的小分子抑制剂通常以相似的亲和力结合家族的所有八个溴结构域,从而导致多种生物学效应。为了进一步了解pan-BET抑制的广泛表型特征,需要开发对家族内单个或一组溴结构域具有选择性的抑制剂。在这方面,我们报告发现了一种有效的探针分子,其对BETs的C端溴结构域(BD2s)的N端溴结构域(BD1s)具有高达150倍的选择性。以结构信息为指导,BD1和BD2域之间的特定氨基酸差异的目标是与附加到先前开发的I-BET151支架上的化学官能团进行选择性相互作用。本文提供的数据证明对BD1域的选择性抑制足以驱动抗炎和抗增殖作用。