素替代对结合的橄电解质的抗生素特性的影响
Jakkarin Limwongyut1,2,3, Alex S Moreland2, Kaixi Zhang1,4
1Department of Chemistry, National University of Singapore, Singapore 117544, Singapore.
Journal of medicinal chemistry
|October 10, 2025
概括
一种新型的胺结合氧化电解质 (COE),cF,表现出具有低细胞毒性和最小耐药性发展的广泛抗菌活性. 这种有前途的化合物有可能用于治疗细菌感染,包括耐药菌株.
科学领域:
- 发现抗微生物药物发现.
- 药品化学 药品化学 是一个
- 材料科学是一种材料科学.
背景情况:
- 结合性橄电解质 (COEs) 是具有潜在抗菌性能的两性分子.
- COEs的结构-活性关系需要进一步研究以优化治疗潜力.
研究的目的:
- 为了合成和评估一系列的二COEs与素替代的二核.
- 探索替代区域化学对抗微生物活性和毒性的影响.
- 确定化合物以进一步开发为新型抗微生物药物.
主要方法:
- 氨基COEs的合成,具有不同的素替代模式.
- 在体外对抗菌素敏感性测试,针对格拉姆阳性和格拉姆阴性细菌.
- 使用HepG2细胞进行细胞毒性测定.
- 在体内研究,包括全身耐受性和小鼠肺部感染模型.
- 细菌耐药性发展的测试.
- 生物膜抑制和根除试验.
- 对脂聚糖 (LPS) 反应的抗炎作用的评估.
主要成果:
- 确定了cF作为一种化合物,对阳性和阴性细菌具有强大的活性.
- cF表现出低细胞毒性 (HepG2 IC50 ~ 614 μg/mL) 和高的体内系统耐受性.
- 在急性或长期暴露后,在金黄色葡萄球菌和Klebsiella pneumoniae中观察到低耐药性发展.
- cF在抗药性K. pneumoniae临床分离物中表现出有效性.
- cF表现出杀菌活性,抑制了生物膜的形成,根除了已建立的生物膜,并抑制了LPS诱导的炎症性细胞因子反应.
- 在体内研究表明,在鼠肺部感染模型中,细菌负载减少≥1-log,肺部停留时间延长.
结论:
- COEs,特别是cF,代表了一类有前途的抗菌剂.
- cF具有广泛的活性,低毒性和良好的耐药性.
- cF抑制生物膜和减少炎症的能力增加了其治疗潜力.
- 该化合物的药理动力学特性表明,在治疗细菌性肺部感染时,可能会采用单剂量策略.
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