鉴定一种对铜有反应性的小分子抑制剂,用于抑制尿病原性大肠杆菌 (Escherichia coli)
Braden S Hanson1, Amanuel Hailemariam2, Yongjian Yang3
1Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Journal of bacteriology
|June 10, 2024
概括
研究人员发现了一种新型的对铜有反应的分子,ECIN,可以抑制尿病原性大肠杆菌 (UPEC) 和其他危险细菌. 这种化合物通过与铜一起杀死病原体来对抗尿路感染 (UTI) 的抗微生物耐药性.
科学领域:
- 微生物学与传染病的研究
- 药物发现和开发 药物发现和开发
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 尿路感染 (UTI) 是一个重要的全球健康问题,主要是由尿病原性大肠杆菌 (UPEC) 引起的.
- 在UPEC和其他病原体中增加的抗微生物耐药性威胁到目前的尿路感染治疗策略.
- 铜作为营养免疫因子,在感染期间限制病原体的生长.
研究的目的:
- 为了识别增强铜对细菌病原体的毒性的小分子.
- 发现可以克服抗微生物耐药性的UPEC新型抑制剂.
主要方法:
- 对51098个小分子进行了高通量选,以寻找UPEC ΔtolC突变的依赖铜的抑制剂.
- 用基因表达和金属含量分析来了解已识别的抑制剂的作用机制.
- 该抑制剂的活性谱被测试了对各种临床相关的病原体,包括Acinetobacter baumannii,Pseudomonas aeruginosa和耐甲素黄金葡萄球菌 (MRSA).
主要成果:
- 发现了一种新型的铜反应抑制剂,称为ECIN (大肠杆菌抑制剂).
- 在UPEC中,ECIN增强了铜的毒性,并且在亚抑制度下抑制了生物膜的形成.
- ECIN对包括MRSA在内的Gram-阴性和Gram-阳性病原体表现出广泛的活性,其作用可以通过L-氨酸逆转.
结论:
- ECIN是一种新的小分子抑制剂,通过一种依赖铜的机制向UPEC.
- 这种化合物显示出作为一种新的治疗药物对抗耐药性尿路病原体和其他重大细菌感染的潜在治疗剂.
- 这些发现突出了通过利用铜等营养免疫因子来开发新的抗微生物药物的有希望的战略.
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