胺结合物和多素B对抗多药耐药的阳性病原体的协同作用
Sandra Story1, Liuwei Jiang2, Alain S Leutou1
1NUBAD, LLC, Greenville, SC, United States.
Frontiers in microbiology
|August 25, 2025
概括
新型-新米辛结合物与聚米辛B对抗耐药细菌具有协同作用. 这种组合绕过了氨基糖体修饰酶,为开发新的抗菌疗法提供了有前途的策略.
科学领域:
- 微生物学
- 药物发现
- 抗菌药物耐药性
背景情况:
- 抗菌药物耐药性是全球日益严重的健康威胁,预计到2050年,耐药性细菌感染每年会造成1000万人的死亡.
- 30年来没有开发出新的抗菌药物, 增加了使用现有药物的联合治疗.
- 氨基糖化物和胆固醇常用于治疗多药耐药细菌性肺炎.
研究的目的:
- 研究胺-新米素库与多胺-B结合对广泛抗药性和抗药性细菌的协同抗菌活性.
- 为了评估旨在逃避氨基糖化物修饰酶的胺-胺结合物的疗效.
- 评估对这些组合的耐药性发展.
主要方法:
- 查对新菌素敏感和耐药的*Acinetobacter baumannii*,*Klebsiella pneumoniae*和*Pseudomonas aeruginosa*菌株,以检测它们与聚菌素B的协同作用.
- 使用双向棋盘和时间杀伤测试来确定协同效应.
- 对抗耐药细菌菌株测试含有半氨酸,氨酸或氨酸的基.
主要成果:
- 单独或与其他氨基甘油酸一起使用的尼奥米辛与聚米辛B的作用无关.
- 几种-新米辛结合物 (含有囊,阿基因或) 与多素B具有协同作用,减少了结合物的最小抑制度的8-64倍和多素B的2-8倍.
- 这些协同组合对*A. baumannii*和*K. pneumoniae*具有16S rRNA甲基转移酶基因和抗药性*P. aeruginosa*最有效.
- 在14天内,敏感菌株对R,C或RC- NEO结合物和多素B组合物没有产生耐药性.
结论:
- -新米素结合物可以克服氨基糖体修饰酶,这是细菌耐药性的关键机制.
- 特定的胺结合物和多胺B的组合显示出对具有挑战性的多药耐药细菌具有显著的协同作用.
- 这种方法代表了开发基于氨基的新型抗菌药物的有希望的策略.
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