Discovery of Novel PDEδ Degraders for the Treatment of KRAS Mutant Colorectal Cancer
作者:Junfei Cheng、Yu Li、Xu Wang、Guoqiang Dong、Chunquan Sheng
DOI:10.1021/acs.jmedchem.0c00929
日期:2020.7.23
protein–protein interaction represents an appealing target for cancer therapy. However, fast release of high-affinity inhibitors from PDEδ hampered drug binding affinity and antiproliferative activity. To overcome the limitations, the first proteolysis-targeting chimeric (PROTAC) small molecules targeting PDEδ were designed. By employment of PDEδ inhibitor deltazinone (2) and cereblon ligand pomalidomide (6)
KRAS-PDEδ蛋白与蛋白的相互作用代表了癌症治疗的诱人靶标。但是,从PDEδ快速释放高亲和力抑制剂会阻碍药物结合亲和力和抗增殖活性。为了克服这些限制,设计了第一个靶向PDEδ的靶向蛋白水解的嵌合小分子(PROTAC)。通过使用PDEδ抑制剂deltazinone(2)和cereblon配体pomalidomide(6),获得了一系列有效的PROTACPDEδ降解剂。最有前途的化合物17f在KRAS突变体SW480细胞中有效诱导PDEδ降解并显示出显着提高的抗增殖能力。化合物17f在SW480大肠癌异种移植模型中,也获得了显着的肿瘤生长抑制。这项概念验证研究为验证KRAS-PDEδ相互作用的可药物性提供了新的策略,并为治疗KRAS突变型癌症提供了有效的先导化合物。