Synthesis, Biological Activity, and Apoptotic Properties of NO-Donor/Enmein-Type ent-Kauranoid Hybrids
作者:Dahong Li、Xu Hu、Tong Han、Shengtao Xu、Tingting Zhou、Zhenzhong Wang、Keguang Cheng、Zhanlin Li、Huiming Hua、Wei Xiao、Jinyi Xu
DOI:10.3390/ijms17060747
日期:——
Herein, we reported on a series of synthetic nitric oxide-releasing enmein-type diterpenoid hybrids (9a–i). All the target compounds showed potent antibacterial activity against selected Gram-positive bacteria S. aureus and B. subtilis. The antiproliferative activity against human tumor K562, MGC-803, CaEs-17 and Bel-7402 cells, and human normal liver cells L-02 was tested and the structure activity relationships (SARs) were also concluded. Compounds 9b and 9d showed the best activity against S. aureus and B. subtilis with the same minimal inhibitory concentrations (MICs) of 4 and 2 μg/mL, respectively. The derivative 9f displayed IC50 values of 1.68, 1.11, 3.60 and 0.72 μM against the four cancer cell lines above and 18.80 μM against normal liver cells L-02; meanwhile, 9f also released a high level of NO at the time point of 60 min of 22.24 μmol/L. Furthermore, it was also found that 9f induced apoptosis via the mitochondria-related pathway and arrested cell cycle of Bel-7402 cells at S phase. These findings might be important to explore new chemical entities for the main causes of in-hospital mortality of S. aureus infection, combined with a solid tumor.
本文中,我们报道了一系列合成的一氧化氮释放型恩醌类二萜杂合体(9a–i)。所有目标化合物对选定革兰氏阳性细菌金黄色葡萄球菌(S. aureus)和枯草芽孢杆菌(B. subtilis)表现出强效的抗菌活性。我们对这些化合物对人肿瘤细胞K562、MGC-803、CaEs-17和Bel-7402以及人正常肝细胞L-02的抗增殖活性进行了测试,并总结了结构-活性关系(SARs)。化合物9b和9d对金黄色葡萄球菌和枯草芽孢杆菌显示出最佳活性,其最低抑制浓度(MICs)分别为4和2 μg/mL。衍生物9f对上述四种癌细胞系的IC50值分别为1.68、1.11、3.60和0.72 μM,对正常肝细胞L-02的IC50值为18.80 μM;同时,9f在60分钟时释放高水平的NO,达到22.24 μmol/L。此外,还发现9f通过线粒体相关途径诱导细胞凋亡,并将Bel-7402细胞周期阻滞在S期。这些发现对于探索针对金黄色葡萄球菌感染(医院死亡的主要原因之一)及实体瘤的新化学实体可能具有重要意义。