Design, synthesis and bioevaluation of inhibitors targeting HSP90-CDC37 protein-protein interaction based on a hydrophobic core
作者:Qiuyue Zhang、Xuexuan Wu、Jianrui Zhou、Lixiao Zhang、Xiaoli Xu、Lianshan Zhang、Qidong You、Lei Wang
DOI:10.1016/j.ejmech.2020.112959
日期:2021.1
interface, design of small molecule inhibitors targeting HSP90-CDC37 PPI is challenging. In this work, based on the binding mode of compound 11 (previously reported by our group), we discovered a hydrophobic pocket centered on Phe213, which was previously unknown, contributing to the binding affinity of HSP90-CDC37 PPI inhibitors. A series of hydrophobic substituted inhibitors were utilized to confirm the
HSP90-CDC37蛋白-蛋白相互作用(PPI)作为激酶特异性分子伴侣系统来调节激酶的成熟。当前,选择性地破坏HSP90-CDC37 PPI,而不是直接抑制HSP90的ATPase功能,正在通过特异性地阻断激酶的成熟而成为一种有前景的癌症治疗策略。但是,由于对HSP90-CDC37结合界面的了解有限,靶向HSP90-CDC37 PPI的小分子抑制剂的设计具有挑战性。在这项工作中,基于化合物11的结合方式(我们小组先前的报道),我们发现了一个以Phe213为中心的疏水口袋,该口袋以前是未知的,有助于形成HSP90-CDC37 PPI抑制剂的结合亲和力。利用一系列疏水取代的抑制剂来确认Phe213疏水核心的重要性。最后,我们得到的最佳化合物DDO-5994具有改善的结合亲和力((显示对疏水核的理想结合模式)ķ d = 5.52 μ M)和抗增殖活性(IC 50 = 6.34 μ M)