Discovery of selective CDK9 degraders with enhancing antiproliferative activity through PROTAC conversion
作者:Xiaqiu Qiu、Yuanqing Li、Bin Yu、Jie Ren、Huidan Huang、Min Wang、Hong Ding、Zhiyu Li、Jubo Wang、Jinlei Bian
DOI:10.1016/j.ejmech.2020.113091
日期:2021.2
important potential cancer treatment target. Nowadays, developing selective CDK9 inhibitors has been extremely challenging as its ATP-binding sites are similar with other CDKs. Here, we report that the CDK9 inhibitor BAY-1143572 is converted into a series of proteolysis targeting chimeras (PROTACs) which leads to several compounds inducing the degradation of CDK9 in acute myeloid leukemia cells at a low nanomolar
细胞周期蛋白依赖性激酶 9 (CDK9) 是一个日益重要的潜在癌症治疗靶点。如今,开发选择性 CDK9 抑制剂极具挑战性,因为其 ATP 结合位点与其他 CDK 相似。在此,我们报道 CDK9 抑制剂 BAY-1143572 被转化为一系列蛋白水解靶向嵌合体 (PROTAC),从而产生几种在低纳摩尔浓度下诱导急性髓系白血病细胞中 CDK9 降解的化合物。此外,最有效的PROTAC分子B03可以比单独弹头更有效地抑制细胞生长,而对其他激酶的抑制作用很小。这种增强的抗增殖活性是通过激酶抑制活性的轻微增加和细胞凋亡诱导水平的增加来介导的。此外, B03可以诱导体内CDK9的降解。我们的工作提供的证据表明, B03代表了进一步发展的先导,并且 CDK9 降解是急性髓系白血病的潜在有价值的治疗策略。