cytotoxic than compounds 6a−s (in which 4-oxoquinazolin-2-yl group functioned as the A-ring), based on their IC50 values to inhibit proliferation. Compound 3f was found as the most potent among 38 analogues and the mechanism of its cytotoxicity was investigated. Flow cytometry indicated that HCT-116 cells treated with compound 3f resulted in a dose-dependent accumulation of cells in the sub-G1 phase
查尔酮基序可以在有助于基本
生物学过程的许多分子中找到,并且许多含
查尔酮的化合物都表现出有效的抗癌活性。在这里,我们将
查尔酮B环或A环替换为4-氧代
喹唑啉-2-基,合成了两个查尔
酮类似物系列(3a-s和6a-s),然后评估了它们对人的细胞毒活性大肠HCT-116和乳腺癌MCF-7
细胞系。化合物3a-s(其中4-氧代
喹唑啉-2-基充当B环)比化合物6a-s(其中4-氧杂
喹唑啉-2-基充当A环)具有更高的细胞毒性。,基于其抑制增殖的IC 50值。化合物3f在38种类似物中,发现其被发现是最有效的,并研究了其细胞毒性的机理。流式细胞术表明,用化合物3f处理的HCT-116细胞导致sub-G1期细胞的剂量依赖性积累,这是凋亡细胞的代表。随后的分析(包括膜联蛋白V-FITC /
PI,AO-EB,MitoSOX™Red和JC-1染色)证实3f暴露诱导HCT-116细胞凋亡。免疫印迹分析表明,细胞暴露于