探索具有有限耐药性的抗生素背后的原理
Elvin Maharramov1,2, Márton Simon Czikkely1,3,4, Petra Szili1
1Synthetic and Systems Biology Unit, Institute of Biochemistry, HUN-REN Biological Research Centre Szeged, Szeged, Hungary.
Nature communications
|February 21, 2025
概括
针对膜完整性和另一种细胞通路的新抗生素在关键病原体中显示出有限的耐药性发展. 这种双重行动的方法对于克服抗生素耐药性的挑战至关重要.
科学领域:
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
- 分子生物学分子生物学
背景情况:
- 抗生素耐药性是一个日益增长的全球健康威胁.
- 针对多个细胞功能的抗生素预计会降低耐药性.
- 双重定位策略至关重要,但可能单独是不够的.
研究的目的:
- 为了测试抗生素同时向膜完整性和另一种细胞通路的假设,表现出减少的耐药性.
- 评估三种新型抗生素候选药物 (POL7306,Tridecaptin M152-P3,SCH79797) 对ESKAPE病原体的疗效.
- 确定限制对这些双重向抗生素耐药性演变的机制.
主要方法:
- 对抗生素候选物进行ESKAPE病原体的测试 (大肠杆菌,肺炎菌,宝曼菌, Pseudomonas aeruginosa).
- 通过功能元基因组学研究耐药机制,包括新突变,基因放大和移动耐药基因.
- 评估暴露于膜向抗生素后的细菌种群根除情况.
主要成果:
- 在ESKAPE病原体中观察到对POL7306,Tridecaptin M152-P3和SCH79797的有限耐药性演变.
- 双向拓酶抗生素对抗生素对抗性发展的敏感性更高.
- 限制抗性的机制包括目标突变/流出的有限影响,通过基因放大无法访问,以及移动抗性基因的稀有性.
- 通过膜向抗生素观察到快速的细菌根除.
结论:
- 抗生素同时向膜完整性和另一种细胞通路的抗生素表明抗药性发展减少.
- 病原体的常见耐药机制对这些新型抗生素提供有限的保护.
- 这些发现为开发下一代抗生素以打击耐药性提供了关键的指导方针.
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