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发现了一系列含印的NBTI,对抗多药耐药性格拉姆阴性病原体具有活性
John G Cumming1, Lukas Kreis1, Holger Kühne1
1Roche Pharma Research & Early Development, F. Hoffmann-La Roche Ltd., CH-4070 Basel, Switzerland.
ACS medicinal chemistry letters
|July 19, 2023
概括
研究人员发现了针对细菌拓酶的新型抗生素,为抗抗多药耐药 (MDR) 格拉姆阴性细菌提供了一种新武器. 这些新型细菌拓酶抑制剂 (NBTI) 避免与现有药物交叉耐药性.
科学领域:
- 药用化学 医学化学
- 微生物学 微生物学
- 结构生物学 结构生物学
背景情况:
- 多药耐药 (MDR) 格拉姆阴性细菌构成了全球健康的重大威胁.
- 现有的抗生素面临着广泛的耐药性,需要新的治疗策略.
- 新型细菌拓酶抑制剂 (NBTI) 通过向II型细菌拓酶提供了一个有前途的途径.
研究的目的:
- 发现和描述一类具有独特结合机制的新型NBTI.
- 探索强大的抗菌活性的结构-活性关系.
- 为了确定有效对抗MDR格兰氏阴性病原体的化合物.
主要方法:
- 新型NBTI的设计和合成,其特点是印尼DNA结合部分.
- X射线共晶学以确定与*金黄色葡萄球菌*DNA旋转酶-DNA的抑制剂的结合方式.
- 结构-活性关系研究,以优化化合物的疗效.
- 对一组MDR格兰阴性细菌的抗菌活性评估.
主要成果:
- 一系列的NBTI成功合成了新的印丹部分.
- 晶结构揭示了DNA回旋酶结合口袋内的特定相互作用,与诺基诺不同.
- 化合物18c表现出强大的,广泛的活性对抗MDR格兰氏阴性细菌.
- 这些化合物避免与现有的诺基诺抗生素产生交叉耐药性.
结论:
- 已识别的NBTI代表了一个有前途的新型抗生素类别.
- 新的印丹部分和观察到的结合相互作用是它们有效性的关键.
- 这些化合物提供了一种潜在的解决方案来对抗MDR格兰氏阴性细菌感染.
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