The Optimization of a Novel, Weak Bromo and Extra Terminal Domain (BET) Bromodomain Fragment Ligand to a Potent and Selective Second Bromodomain (BD2) Inhibitor
作者:Jonathan T. Seal、Stephen J. Atkinson、Helen Aylott、Paul Bamborough、Chun-wa Chung、Royston C. B. Copley、Laurie Gordon、Paola Grandi、James R. J. Gray、Lee A. Harrison、Thomas G. Hayhow、Matthew Lindon、Cassie Messenger、Anne-Marie Michon、Darren Mitchell、Alex Preston、Rab K. Prinjha、Inmaculada Rioja、Simon Taylor、Ian D. Wall、Robert J. Watson、James M. Woolven、Emmanuel H. Demont
DOI:10.1021/acs.jmedchem.0c00796
日期:2020.9.10
toxicity of pan-BET inhibitors is well documented. The possibility of an ameliorated safety profile driven by significantly selective (>100-fold) inhibition of a subset of the eight bromodomains is enticing, but challenging given the close homology. Herein, we describe the X-ray crystal structure-directed optimization of a novel weak fragment ligand with a pan-second bromodomain (BD2) bias, to potent
pan-BET抑制剂具有深远的功效,但同时也具有相关的毒性。通过对八个溴结构域的一个子集进行显着选择性(> 100倍)抑制,可以改善安全性,这是诱人的,但鉴于紧密的同源性,这具有挑战性。在这里,我们描述了新型X射线晶体结构定向的新型弱片段配体的泛第二溴结构域(BD2)偏向有效和高度BD2选择性抑制剂。通过我们对正交模板(15,GSK046)的并行研究,能够实现模板跳跃方法,这是观察到的高选择性的基础。最终产生了两个工具分子20(GSK620)和56(GSK549)在人类全血中显示出抗炎表型,证实了它们对细胞靶标的参与。这些工具具有出色的广泛选择性,可开发性和体内口服药代动力学特性,我们希望它们对表观遗传学研究领域具有广泛的用途。