A Series of Potent CREBBP Bromodomain Ligands Reveals an Induced-Fit Pocket Stabilized by a Cation-π Interaction
作者:Timothy P. C. Rooney、Panagis Filippakopoulos、Oleg Fedorov、Sarah Picaud、Wilian A. Cortopassi、Duncan A. Hay、Sarah Martin、Anthony Tumber、Catherine M. Rogers、Martin Philpott、Minghua Wang、Amber L. Thompson、Tom D. Heightman、David C. Pryde、Andrew Cook、Robert S. Paton、Susanne Müller、Stefan Knapp、Paul E. Brennan、Stuart J. Conway
DOI:10.1002/anie.201402750
日期:2014.6.10
development of CREBBP bromodomain ligands. While the benzoxazinone series showed low affinity for the CREBBP bromodomain, expansion of the dihydroquinoxalinone series resulted in the first potent inhibitors of a bromodomain outside the BET family. Structural and computational studies reveal that an internal hydrogen bond stabilizes the protein‐bound conformation of the dihydroquinoxalinone series. The side
在 CREBBP 溴结构域配体的开发中,苯并嗪酮和二氢喹喔啉酮片段被用作新型乙酰赖氨酸模拟物。虽然苯并嗪酮系列对 CREBBP 溴结构域显示出低亲和力,但二氢喹喔啉酮系列的扩展导致了 BET 家族之外溴结构域的第一个有效抑制剂。结构和计算研究表明,内部氢键稳定了二氢喹喔啉酮系列的蛋白质结合构象。该系列的侧链结合在诱导拟合口袋中,与 CREBBP 的 R1173 形成阳离子-π 相互作用。最有效的化合物抑制 CREBBP 与 U2OS 细胞中染色质的结合。