酸结合的阿米卡辛结合物的宽谱活性与聚密素B协同对抗广泛耐药和抗药性细菌
Sandra Story1, Anindra Sharma2, Krishnagopal Maiti2
1NUBAD, LLC, Greenville, South Carolina 29605, United States.
ACS infectious diseases
|December 29, 2025
概括
新型相关的阿米卡辛衍生物与聚米辛B对抗耐药Klebsiella pneumoniae的显著协同作用. 这种组合疗法提供了一种有前途的策略,用于对抗对多种抗生素有耐药性的关键优先病原体.
科学领域:
- 微生物学 微生物学
- 药用化学 医学化学
- 传染性疾病 传染性疾病
背景情况:
- 克莱布塞拉物种是关键的优先病原体,因为它具有广泛的碳烯和氨基糖化物耐药性.
- 氨基糖化物修饰酶 (AMEs) 和16S rRNA甲基转移酶 (RMTases) 正在使现有的氨基糖化物治疗无效.
- 聚米辛和阿米卡辛的联合治疗是对耐药克莱布西拉感染的潜在治疗方法.
研究的目的:
- 为了合成一种新的链阿米卡辛库.
- 评估阿米卡辛衍生物与聚米辛结合的抗菌活性和协同效应.
- 为了研究对抗抗药性Klebsiella菌株的疗效.
主要方法:
- 含有充电,含硫或芳香氨基酸侧链的阿米卡辛衍生物的化学合成.
- 对31种Klebsiella pneumoniae菌株进行查,以检测它们与相关的阿米卡辛和B型聚米辛的协同活性.
- 对新型化合物的哺乳动物细胞毒性的评估.
主要成果:
- 含有托和氨酸的阿米卡辛衍生物与聚米辛B在77%的Klebsiella pneumoniae菌株中表现出协同作用.
- 即使在含有多个AME和RMTase的菌株中也观察到协同活性.
- 与相关的阿米卡辛化合物表现出与阿米卡辛相似的哺乳动物细胞毒性,但增强了用聚米辛B对抗性细菌的协同杀死.
结论:
- 与相关的阿米卡辛衍生物,特别是与酸和囊相关的衍生物,与多素B对抗多药耐药的克莱布西拉菌具有强大的协同作用.
- 这种新型组合疗法是克服关键优先病原体中氨基糖化物和抗药性的一种有希望的方法.
- 开发的化合物提供了一种可行的治疗策略,以打击克莱布西拉感染中抗生素耐药性日益增长的威胁.
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