Controlling Intramolecular Interactions in the Design of Selective, High-Affinity Ligands for the CREBBP Bromodomain.

Controlling Intramolecular Interactions in the Design of Selective, High-Affinity Ligands for the CREBBP Bromodomain.
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DOI:
10.1021/acs.jmedchem.1c00348
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发表时间:
2021-07-22
影响因子:
7.3
通讯作者:
Conway SJ
Conway SJ
中科院分区:
医学1区
文献类型:
--
作者:
Brand M;Clayton J;Moroglu M;Schiedel M;Picaud S;Bluck JP;Skwarska A;Bolland H;Chan AKN;Laurin CMC;Scorah AR;See L;Rooney TPC;Andrews KH;Fedorov O;Perell G;Kalra P;Vinh KB;Cortopassi WA;Heitel P;Christensen KE;Cooper RI;Paton RS;Pomerantz WCK;Biggin PC;Hammond EM;Filippakopoulos P;Conway SJ

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CREBBP (CBP/KAT3A) 及其旁系同源物 EP300 (KAT3B) 是赖氨酸乙酰转移酶 (KAT),对人类发育至关重要。它们各自包含 10 个结构域,通过这些结构域与超过 400 种蛋白质相互作用,使它们成为重要的转录共激活因子和人类蛋白质-蛋白质相互作用组中的关键节点。 CREBBP 和 EP300 的溴结构域能够结合组蛋白和许多其他重要蛋白质(包括 p53、p73、E2F 和 GATA1)的乙酰化赖氨酸残基。在此,我们报告了一项为 CREBBP 和 EP300 溴结构域 [(−)-OXFBD05] 开发高亲和力小分子配体的工作,其选择性比 BET 溴结构域的代表性成员 BRD4(1) 高 100 倍。使用该配体的细胞研究表明,抑制 HCT116 结肠癌细胞中的 CREBBP/EP300 溴结构域会导致 c-Myc 水平降低以及 H3K18 和 H3K27 乙酰化减少。在缺氧(<0.1% O2)下,CREBBP/EP300 溴结构域的抑制导致 HIF-1α 的稳定性增强。
CREBBP (CBP/KAT3A) and its paralogue EP300 (KAT3B) are lysine acetyltransferases (KATs) that are essential for human development. They each comprise 10 domains through which they interact with >400 proteins, making them important transcriptional co-activators and key nodes in the human protein–protein interactome. The bromodomains of CREBBP and EP300 enable the binding of acetylated lysine residues from histones and a number of other important proteins, including p53, p73, E2F, and GATA1. Here, we report a work to develop a high-affinity, small-molecule ligand for the CREBBP and EP300 bromodomains [(−)-OXFBD05] that shows >100-fold selectivity over a representative member of the BET bromodomains, BRD4(1). Cellular studies using this ligand demonstrate that the inhibition of the CREBBP/EP300 bromodomain in HCT116 colon cancer cells results in lowered levels of c-Myc and a reduction in H3K18 and H3K27 acetylation. In hypoxia (<0.1% O2), the inhibition of the CREBBP/EP300 bromodomain results in the enhanced stabilization of HIF-1α.
DOI: 10.1021/jm301588r
发表时间: 2013-04-25
影响因子: 7.3
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发表时间: 1996-12-19
期刊: NATURE
影响因子: 64.8
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通讯作者: Kouzarides, T
DOI: 10.1039/c2md20189e
发表时间: 2013-01-01
期刊: MedChemComm
影响因子: --
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DOI: 10.1021/acs.jmedchem.5b01447
发表时间: 2016-06-09
影响因子: 7.3
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