(BRD4) has gained growing interest as an effective drug target for the treatment of hepatocellular carcinoma (HCC). Herein, we designed and synthesized a series of quinoxalinone derivatives as BRD4 inhibitors via scaffold hopping. The representative compound X9 showed potent BRD4 inhibitory activity (with IC50 = 82.3 nM), and preferable antiproliferative activity against HepG2 cells (with IC50 = 1.13 ± 0
含
溴结构域蛋白 4 (BR
D4) 作为治疗肝细胞癌 (HCC) 的有效药物靶点越来越受到关注。在此,我们通过支架跳跃设计并合成了一系列作为 BR
D4 抑制剂的
喹喔啉酮衍
生物。代表性化合物X9显示出有效的 BR
D4 抑制活性(IC 50 = 82.3 nM),对 HepG2 细胞具有更好的抗增殖活性(IC 50 = 1.13 ± 0.07 μM),并且对 GES-1 细胞的毒性较低(IC 50 = 57.24 ± 5.46 μM)。此外,化合物X9通过下调 Snail 和 MMP-9 的表达同时上调 E-cadherin 和 Occludin,剂量依赖性地抑制集落形成并阻断 HepG2 细胞的迁移。此外,化合物X9有效下调HepG2细胞c-Myc的表达,诱导细胞凋亡,并阻滞于G 0 /G 1期。总体而言,
喹喔啉酮是潜在的核心 BR
D4 抑制剂,化合物X9可能对肝癌治疗有效。