克桑衍生物增强了neomycin对抗多微生物的治疗潜力
Sayed Mohamad Safwan1, Neeraj Kumar2, Devashish Mehta1
1Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Third Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India.
ACS infectious diseases
|January 31, 2024
概括
一种新型的桑衍生物,X8,作为抗生素辅助剂,增强了neomycincin的作用.
科学领域:
- 微生物学 微生物学
- 药用化学 医学化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 格拉姆阴性细菌感染由于抗生素耐药性和不透的细菌膜而带来了重大治疗挑战.
- 多微生物感染加剧了治疗困难,通常需要更高的抗生素剂量.
- 抗生素辅助剂为增强现有抗生素疗效提供了一个有希望的策略,但毒性仍然是临床应用的担忧.
研究的目的:
- 设计,合成和评估作为潜在的抗生素辅助剂的桑衍生分子.
- 调查化合物的协同抗微生物活性和毒性概况.
- 阐明有希望的辅助剂-抗生素组合的作用机制.
主要方法:
- 进行了结构-活性关系 (SAR) 研究,以确定强效的桑衍生物.
- 与新菌素 (NEO) 结合的化合物 (X8) 的疗效被测试在对抗像大肠杆菌和 Pseudomonas aeruginosa 这样的阴性细菌.
- 进行生物化学测试以了解作用机制,包括对蛋白质合成和膜透性的影响.
- 使用生物膜破坏测定和小鼠伤口感染模型来评估治疗潜力.
主要成果:
- 一种p-dimethylamino pyridine衍生物的xanthon,指定X8,被确定为一个强大的抗生素辅助剂.
- 在与neomycin结合使用时,X8对大肠杆菌和P. aeruginosa产生了协同作用的抗微生物作用,在哺乳动物细胞中没有观察到毒性.
- 发现X8-NEO组合抑制了蛋白质合成,并通过与脂多糖的相互作用来增强细菌膜的透性.
- 这种组合有效地破坏了单微生物和多微生物生物膜,并在小鼠伤口感染模型中显示出治疗前景.
结论:
- 克桑衍生物X8显示出作为一种非毒性抗生素辅助剂的显著潜力.
- 结合X8和neomycin提供了一种有前途的治疗策略,用于对抗包括生物膜在内的グラム阴性细菌感染.
- 作为辅助疗法,X8的进一步开发可以解决传染病治疗中的关键未满足需求.
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