作者:Zhang, Yiting、Li, Xiangqian、Liu, Fang、Bai, Xiaoyi、Liu, Xiaochun、Sun, Hao、Gao, Chenxia、Lin, Yuxi、Xing, Pan、Zhu, Jiqiang、Liu, Ruihua、Wang, Zemin、Dai, Jiajia、Shi, Dayong
DOI:10.1021/acs.jmedchem.3c02460
日期:——
Designing selective PARP-1 inhibitors has become a new strategy for anticancer drug development. By sequence comparison of PARP-1 and PARP-2, we identified a possible selective site (S site) consisting of several different amino acid residues of α-5 helix and D-loop. Targeting this S site, 140 compounds were designed, synthesized, and characterized for their anticancer activities and mechanisms. Compound
设计选择性PARP-1抑制剂已成为抗癌药物开发的新策略。通过对PARP-1和PARP-2的序列比较,我们鉴定了一个可能的选择性位点(S位点),该位点由α-5螺旋和D环的几个不同氨基酸残基组成。针对该 S 位点,设计、合成了 140 种化合物,并对其抗癌活性和机制进行了表征。化合物I16显示出最高的 PARP-1 酶抑制活性 (IC 50 = 12.38 ± 1.33 nM) 和优于 PARP-2 的最佳选择性指数 (SI = 155.74)。口服I16 (25 mg/kg)对Hela和SK-OV-3肿瘤细胞异种移植模型显示出较高的抑制率,均高于口服阳性药物Olaparib(50 mg/kg)。此外, I16具有出色的安全性,高口服剂量时没有明显毒性。这些发现为开发安全、高效和高选择性的 PARP-1 抑制剂提供了新颖的设计策略和化学型。