The epigenetic regulator CBP/P300 presents a novel therapeutic target for oncology. Previously, we disclosed the development of potent and selective CBP bromodomain inhibitors by first identifying pharmacophores that bind the KAc region and then building into the LPF shelf. Herein, we report the “hybridization” of a variety of KAc-binding fragments with a tetrahydroquinoline scaffold that makes optimal interactions with the LPF shelf, imparting enhanced potency and selectivity to the hybridized ligand. To demonstrate the utility of our hybridization approach, two analogues containing unique Asn binders and the optimized tetrahydroquinoline moiety were rapidly optimized to yield single-digit nanomolar inhibitors of CBP with exquisite selectivity over BRD4(1) and the broader bromodomain family.

中文翻译：

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设计有效和选择性环状单磷酸腺苷反应元件结合蛋白，结合蛋白（CBP）抑制剂的独特方法

表观遗传调节剂CBP / P300提出了一种新型的肿瘤治疗靶标。以前，我们通过首先确定结合KAc区的药效团，然后构建到LPF架子上，公开了有效和选择性CBP溴结构域抑制剂的开发。在本文中，我们报道了各种与KAc结合的片段与四氢喹啉支架的“杂交”，该支架与LPF架子进行了最佳相互作用，为杂交的配体提供了增强的效能和选择性。为了证明我们的杂交方法的实用性，快速优化了两个包含独特的Asn结合剂和优化的四氢喹啉部分的类似物，以产生对CBP的个位数纳摩尔抑制剂，对BRD4（1）和更广泛的溴结构域家族具有出色的选择性。