Novel nalidixic acid derivatives targeting topoisomerase II enzyme; Design, synthesis, anticancer activity and effect on cell cycle profile
作者:Omneya M. Khalil、Ehab M. Gedawy、Afaf A. El-Malah、Mina E. Adly
DOI:10.1016/j.bioorg.2018.10.058
日期:2019.3
AIM Design and synthesis of novel nalidixic acid derivatives of potent anticancer and topoisomerase II inhibitory activities were our major aim. MATERIALS & METHODS All the newly synthesized nalidixic acid derivatives were submitted to the National Cancer Institute (NCI), Bethesda, USA and were accepted for single dose screening. Further investigation via IC50 determination of the most potent compound
目的设计和合成具有强大抗癌和拓扑异构酶II抑制活性的新萘啶酸衍生物是我们的主要目标。材料与方法所有新合成的萘啶酸衍生物均已提交给美国贝塞斯达的国家癌症研究所(NCI),并接受了单剂量筛选。通过IC50进一步研究确定针对K-562和SR白血病细胞系的最有效化合物6a。最后,进行拓扑异构酶II抑制活性,细胞周期分析和6a的分子对接,以鉴定其抗癌活性的可能机制。结果化合物6a对白血病表现出有趣的选择性,尤其是K-562和SR亚板,IC50分别为35.29 µM和13.85 µM。而且,与已知的拓扑异构酶抑制剂(如阿霉素和拓扑替康)相比,化合物6a的拓扑拓扑异构酶IIα和拓扑异构酶IIβ抑制活性强,IC50分别为1.30 µM和0.017 µM。细胞周期分析表明,化合物6a诱导细胞周期停滞在G2-M期,导致细胞增殖和凋亡的抑制。分子建模表明,6a强大的拓扑异构酶抑制活性是由于通过与镁离子Mg2 +的配位键,与Asp