Novel pyridinium cationic pleuromutilin analogues overcoming bacterial multidrug resistance
作者:Yunpeng Yi、Jiaming Zhang、Jiakun Zuo、Maolu Zhang、Shifa Yang、Zhongli Huang、Guiyu Li、Ruofeng Shang、Shuqian Lin
DOI:10.1016/j.ejmech.2023.115269
日期:2023.5
inhibited bacterial protein synthesis but also disrupted bacterial cell walls. Compound e4 showed an ED50 of 5.68 mg/kg against multi-drug resistant Staphylococcus aureus in infected mice model. In in vivo and in vitro toxicity tests, e4 showed low toxic effects with an LD50 of 879 mg/kg to mice. These results suggest that compound e4 may be considered as a new therapeutic candidate for bacterial infections
设计、合成了一系列吡啶鎓阳离子取代的截短侧耳素类似物,并评价了它们的体外和体内抗菌活性。大多数衍生物显示出有效的抗菌活性,尤其是 e4,它对多重耐药细菌显示出最高的抗菌活性,并进行了时间杀灭动力学、耐药性研究、细胞毒性和分子对接测定。分子对接结果、扫描电镜和邻硝基苯基-β-吡喃半乳糖苷测试表明,e4不仅抑制细菌蛋白质合成,而且破坏细菌细胞壁。在感染小鼠模型中,化合物e4对多重耐药金黄色葡萄球菌的ED50为5.68 mg/kg。在体内和体外毒性试验中,e4对小鼠表现出较低的毒性作用,LD50为879 mg/kg。这些结果表明化合物 e4 可被视为细菌感染的新治疗候选物。