奥利科米辛A-A是一种新型依赖的脂,具有对抗多药耐药细菌的抗生素活性
Roman Makitrynskyy1,2, Lena Keller3,4,5, Amninder Kaur3,5
1Institute for Pharmaceutical Biology and Biotechnology, University of Freiburg, Stefan-Meier-Str. 19, 79104, Freiburg, Germany.
Chemistry (Weinheim an der Bergstrasse, Germany)
|December 2, 2024
概括
研究人员通过修改Streptomyces细菌中的基因,发现了一种新型抗生素olikomycin A. 这种新型化合物通过破坏它们的细胞膜,有效地对抗多抗药性病原体,为抗生素耐药性提供了有希望的新武器.
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 药物发现 药物发现 药物发现
背景情况:
- 抗生素耐药性是一个日益增长的全球健康威胁.
- Streptomyces 细菌拥有大量的生物合成基因集群 (BGCs) 用于抗菌生产.
- 许多BGC在标准实验室条件下仍然未表达.
研究的目的:
- 为了从Streptomyces物种中识别新型抗生素.
- 研究wblA基因在调节天然产品生物合成中的作用.
- 描述新发现化合物的结构和生物活性.
主要方法:
- 在Streptomyces ghanaensis中删除wblA的基因 ATCC 14672.2.
- 全基因组测序和基因失活研究用于生物合成途径分析.
- 使用光谱方法阐明新型化合物的完整结构.
- 生物活性测定对抗多种耐药性格拉姆阳性病原体.
主要成果:
- 删除wblA诱导了一个新型脂的产生,Olikomycin A.
- 奥利科米辛A是一种依赖的抗生素,属于非核糖体合成酶 (NRPS) 类.
- 该化合物表现出强大的抗微生物活性,对抗多药耐药的格拉姆阳性细菌.
- 作用机制涉及破坏细菌细胞膜的完整性.
- 奥利科米辛A表现出类似于临床使用的达普托米辛的抗生素特征.
结论:
- 在Streptomyces中向基因操纵可以解锁新型抗生素的生产.
- 奥利科米辛A代表了一种有前途的新候选药物,用于治疗由多抗药性格拉姆阳性病原体引起的感染.
- 对olikomycin A和类似化合物的进一步研究可能会导致针对耐药细菌的新治疗策略.
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