发现双活性埃西奥纳米德增强剂可以抑制Mycobacterium结核病ESX-1分泌系统
Raphael Gries1, Jason Chhen2, Edeltraud van Gumpel2
1Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany; German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, 50931 Cologne, Germany.
Cell chemical biology
|January 5, 2024
概括
新的oxadiazole化合物通过阻断关键的毒性因子,并提高现有药物的疗效,如ethionamide战斗耐药结核病.
科学领域:
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
- 结核病研究 结核病研究
背景情况:
- 耐药性Mycobacterium结核病 (Mtb) 是一个重大的全球卫生挑战.
- 需要新的治疗策略来克服对标准抗结核疗法的耐药性.
- 抗病毒性化合物和前药物增强剂为传统抗生素提供了有希望的替代品.
研究的目的:
- 为了确定针对耐药Mtb的新型化合物.
- 探索基于宿主细胞的抗病毒剂的药物发现.
- 研究可以增强现有抗结核药物的活性的化合物.
主要方法:
- 基于宿主细胞的药物发现被用来识别潜在的候选药物.
- 鉴定出一种氧沙醇化合物 (S3),可以抑制Mtb ESX-1分泌系统.
- 用RNA测序来分析药物暴露的Mtb.中的基因表达变化.
- 为了优化化合物的疗效,进行了结构-活性关系研究.
主要成果:
- 已识别的氧沙化合物 (S3) 有效地阻断了Mtb ESX-1分泌系统,这是一个关键的毒性因子.
- S3治疗导致细胞内Mtb生长受损,巨细胞溶解减少.
- RNA测序显示,在S3治疗的Mtb.中,ethA - - 一种乙胺激活基因的显著上调.
- 观察到一种协同效应,S3显著增强了抗结核前药埃西奥纳米德的活性.
- 化学修改允许解开抗病毒性和埃西奥纳米德增强活动的合.
结论:
- 一系列新型的氧沙醇化合物显示出对MTB的双重作用潜力.
- 这些化合物通过ESX-1阻断抑制Mtb毒性,并增强埃西奥纳米德的疗效.
- 这些发现为开发抗耐药结核病治疗方法提供了一个有希望的新途径.
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