达普托米辛可以避免在Streptococcus pneumoniae中通过BceAB载体介导的耐药性
Agathe Faure1, Sylvie Manuse1, Mathilde Gonin1
1Molecular Microbiology and Structural Biochemistry (MMSB), UMR 5086 CNRS/University of Lyon, Lyon, France.
Microbiology spectrum
|January 12, 2024
概括
达普托米辛是一种最后的抗生素,它不会通过Streptococcus pneumoniae的BceAB载体引发耐药性. 这一发现表明,达普托和类似的脂可能会逃避常见的抗菌素耐药性机制.
科学领域:
- 微生物学与传染病的研究
- 分子生物学分子生物学
- 药物发现和开发 药物发现和开发
背景情况:
- 全球抗生素耐药性的增加威胁着人类健康,因为现有的药物失效.
- 达普托米辛是一种脂抗生素,破坏了格拉姆阳性细菌膜,表现出较慢的耐药性发展.
- 已知 BceAB 类型的 ABC 载体通过隔离细胞壁前体来赋予抗菌的耐药性.
研究的目的:
- 调查达普托米辛是否能够逃避菌肺炎中BceAB载体介导的耐药性.
- 在抗菌素耐药性的背景下,了解达普托米辛和BceAB载体之间的相互作用.
主要方法:
- 研究了达普托米辛与BceAB载体的结合.
- 评估了 BceAB 载体对 daptomycin 产生抗性的能力.
- 监测了BceAB载体在daptomycin存在时的表达.
主要成果:
- 达普托米辛被发现与BceAB输送器结合.
- BceAB 载体并没有介导对 daptomycin 的抗性.
- 达普托米辛没有诱导BceAB载体的表达.
结论:
- 达普托米辛可以逃避由BceAB类型的ABC转运器介导的抗性机制.
- 这一发现支持达普素和类似的依赖的脂类抗生素的潜在临床应用.
- 了解达普米辛与抗药性机制的相互作用对于对抗抗微生物药物耐药性至关重要.
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