一种宿主导的辅助剂使细胞内细菌对抗生素持久性复苏和敏感化
bioRxiv : the preprint server for biology
|November 18, 2024
概括
一种新的化合物KL1增强了细菌的能量,使抗生素耐受性持续细胞对治疗敏感. 这种方法针对宿主-病原体相互作用,以打击抗菌素耐药性和耐受性.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 药物发现 药物发现 药物发现
背景情况:
- 抗生素耐药性和耐受性在抗微生物化疗中构成重大挑战.
- 抗生素耐受性涉及一种表型状态,保护细菌免受药物的作用,影响种群或持久细胞.
- 宿主-病原体相互作用,特别是活性氧和物种,诱导细菌能量崩和耐受性.
研究的目的:
- 开发一种高通量屏幕,用于识别细胞内黄金葡萄球菌*的能量调节剂.
- 研究已识别的化合物作为辅助剂的潜力,以克服抗生素耐受性.
主要方法:
- 细胞内细菌能量调节器的高通量选.
- 在 *S. aureus* 细菌病和 *Salmonella Typhimurium* 感染模型中测试已识别的化合物 (KL1) 的疗效.
- 转录组分析和机理学研究,以阐明KL1的作用模式.
主要成果:
- KL1被确定为一种能调节器,可以增加细胞内细菌的能量.
- KL1使持久性细胞对抗生素敏感,而不会产生细胞毒性或促进细菌外生长.
- KL1在小鼠感染模型中表现出辅助活性,并通过抑制巨细胞中反应性物种的产生来调节宿主免疫反应.
结论:
- KL1代表了一种有前途的策略,通过增强细胞代谢来向细胞内持久细胞.
- 调节宿主免疫反应和减少诸如反应性物种之类的压力因素,可以缓解抗生素耐受性.
- 这项研究强调了针对宿主-病原体接口来打击抗生素耐受性的潜力,特别是在细胞内环境中.
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