合成的宏化物克服了MLSBK耐药病原体
Cong-Xuan Ma1, Ye Li2,3, Wen-Tian Liu1
1Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China.
Cell discovery
|July 11, 2024
概括
新型宏类昆类抗生素克服了像金黄色葡萄球菌 (Staphylococcus aureus) 这样的细菌的抗性. 这些新药向甲基化核糖体,为抗击具有挑战性的感染提供希望,并指导未来的抗生素设计.
科学领域:
- 药用化学 医学化学
- 微生物学 微生物学
- 分子生物学分子生物学
背景情况:
- 抗生素耐药性,特别是黄金葡萄球菌,是一个日益增长的全球健康威胁.
- 传统的宏类-林科萨胺类-平素B-基托利德 (MLSBK) 抗生素对具有甲基化rRNA (A2058甲基化或G2058突变) 的细菌无效.
- 现有的MLSBK药物需要未经修改的A2058来选择性向人类细胞上的病原体.
研究的目的:
- 设计和合成新型基于类的抗生素,有效对抗抗性细菌菌株.
- 为了确定可以克服由rRNA甲基化介导的抵抗机制的化合物.
- 探索新的治疗策略来对抗具有挑战性的细菌病原体,包括Mycoplasma pneumoniae.
主要方法:
- 设计和合成新的宏类-类杂分子.
- 对一组病原体的抗菌疗效的评估,包括耐药菌株.
- 机制研究以阐明作用模式,重点关注核糖体结合和结构-活性关系.
主要成果:
- 发现了两种强效化合物,MCX-219和MCX-190,具有广泛的抗菌活性.
- 对A2058-甲基化黄金葡萄球菌和临床Mycoplasma pneumoniae与A2058G突变分离物的证明有效性.
- MCX-190利用新生的脱出道中的二次结合部位,通过特定的相互作用参与甲基化核糖体.
结论:
- MCX-219和MCX-190代表了有希望的下一代MLSBK抗生素,能够对抗抗生素耐药性.
- 这种新型的结合模式提供了一种克服rRNA甲基化所带来的抵抗的策略.
- 这些发现为未来MLSBK抗生素的合理设计提供了框架,以应对不断升级的耐药性挑战.
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