New promising levofloxacin derivatives: Design, synthesis, cytotoxic activity screening, Topo2β polymerase inhibition assay, cell cycle apoptosis profile analysis
作者:Afaf El-Malah、Amira Youssef、Mohamed Ismail、Mona Kamel、Zeinab Mahmoud
DOI:10.1016/j.bioorg.2021.105029
日期:2021.8
drugs and variant cell lines. In DNA-Flow cytometry cell cycle analysis, compound 3c arrested the cell cycle at G2/M phase like etoposide and levofloxacin, while compounds 3e and 4a exhibit its arrest at S phase. In addition, 3c, 3e and 4a showed a significant elevation in active caspase-3 levels (10.01, 8.98 and 10.71 folds, respectively). The effect of the new compounds on normal cells was also investigated
合成了新设计的左氧氟沙星类似物作为拓扑异构酶 II β 抑制剂 (Topo2β)。针对乳腺癌、肝癌和白血病癌细胞系筛选了它们的细胞毒活性。目标化合物3c、3e、4a和6d对肝癌细胞系(Hep3B)表现出最佳活性(IC 50 分别为2.33、1.38、0.60和0.43)。(L-SR) 白血病癌细胞系明显受到化合物3b、3g和4a 的影响(IC 50 = 1.62、1.41 和 1.61,依次)。3c具有最好的抗乳腺癌细胞系 (MCF-7) 活性和 IC50 = 0.66。化合物3c、3e、3g、4a和4c表现出的Topo2β抑制活性超过了作为参比药物和变异细胞系的依托泊苷和左氧氟沙星。在 DNA 流式细胞术细胞周期分析中,化合物3c在 G2/M 期阻滞细胞周期,如依托泊苷和左氧氟沙星,而化合物3e和4a在 S 期阻滞。此外,3c、3e和4a显示活性 caspase-3 水平显着升高(分别为