substrate of NQO1. Moreover, the investigation of anticancer mechanism showed that the representative compound 29h affected cell cycle and induced NQO1 dependent apoptosis through an oxidative stress triggered mitochondria-related pathway in A549 cells. Besides, the antitumor activity of 29h was also verified in a liver cancer xenograft mouse model. Biological evaluation of these compounds concludes that there
NQO1酶由于在某些低氧肿瘤中的过度表达而成为选择性癌症治疗的潜在靶标。通过对NQO1的良好底物3-(羟甲基)
吲哚醌进行功能化,合成了一系列具有多种细胞毒性二
萜类化合物(ordonin及其类似物)的前药,它们被NQO1激活。目标化合物(29a-m)对富含NQO1的人结肠癌细胞(HT-29)和人肺癌(A549)细胞(IC50 = 0.263-2.904μM)表现出相对较高的抗增殖活性,而对NQO1致病的肺腺鳞癌具有相对较高的抗增殖活性H596细胞对这些化合物的敏感性较低,其中,化合物29h对A549和HT-29细胞均表现出最强的抗增殖活性,IC50值分别为0.386和0.263μM。进一步的HPLC和对接研究表明29h是NQO1的良好底物。此外,对抗癌机制的研究表明,代表性化合物29h通过氧化应激触发A549细胞中的线粒体相关途径,影响细胞周期并诱导NQO1依赖性细胞凋亡。此外,在肝癌异种移