Design, synthesis and biological evaluation of novel pyrrolidone-based derivatives as potent p53-MDM2 inhibitors
作者:Dongjuan Si、Huijuan Luo、Xiaomeng Zhang、Kundi Yang、Hongmei Wen、Wei Li、Jian Liu
DOI:10.1016/j.bioorg.2021.105268
日期:2021.10
Inhibition of the interactions of the tumor suppressor protein p53 with its negative regulators MDM2 in vitro and in vivo, representing a valuable therapeutic strategy for cancer treatment. The natural product chalcone exhibited moderate inhibitory activity against MDM2, thus based on the binding mode between chalcone and MDM2, a hit unsaturated pyrrolidone scaffold was obtained through virtual screening
在体外和体内抑制肿瘤抑制蛋白 p53 与其负调节因子 MDM2 的相互作用,代表了癌症治疗的有价值的治疗策略。天然产物查尔酮对MDM2表现出中等的抑制活性,因此基于查尔酮与MDM2的结合方式,通过虚拟筛选获得了命中的不饱和吡咯烷酮支架。合成了几种不饱和吡咯烷酮衍生物并进行了生物学评价。结果,因为 MDM2 的三个关键疏水口袋被连接在吡咯烷酮片段上的取代苯基占据,化合物 4h 显示出与 MDM2 的良好结合亲和力。此外,化合物4h还表现出优异的抗肿瘤活性和选择性,体外对正常细胞无细胞毒性。. 进一步的抗肿瘤机制研究表明,化合物4h可成功诱导p53及相应下游p21蛋白的活化,从而成功引起HCT116细胞周期阻滞在G1/M期和凋亡。因此,新型不饱和吡咯烷酮 p53-MDM2 抑制剂可以开发为新型抗肿瘤剂。