Inhibitors of the Hsp90 molecular chaperone are showing considerable promise as potential molecular therapeutic agents for the treatment of cancer. Here we describe novel 2-aminothieno[2,3-d]pyrimidine ATP competitive Hsp90 inhibitors, which were designed by combining structural elements of distinct low affinity hits generated from fragment-based and in silico screening exercises in concert with structural
Hsp90分子伴侣的
抑制剂作为治疗癌症的潜在分子治疗剂已显示出可观的前景。在这里,我们描述了新型的2-aminothieno [2,3- d ]
嘧啶ATP竞争性Hsp90
抑制剂,该
抑制剂是通过结合基于片段和计算机模拟筛选产生的独特的低亲和性命中的结构元素以及来自X-的结构信息而设计的射线蛋白质晶体学。该系列的示例具有很高的亲和力(IC 50在荧光极化(FP)竞争性结合试验中测得Hsp90为50-100 nM),并且在人类癌
细胞系中具有活性,它们抑制细胞增殖并表现出致癌蛋白消耗和Hsp72随之升高的特征。当在人
BT474人乳腺癌异种移植模型中口服施用时,几个实例(34a,34d和34i)以良好耐受的剂量引起肿瘤生长消退。