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准双化酶 (DUB) 和泛素通路调节剂,以增强对抗细菌感染的宿主防御能力

John Santelices¹, Alexander Schultz¹, Alyssa Walker¹

¹Microbiology and Cell Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA.

bioRxiv : the preprint server for biology

|February 20, 2025

概括

这项研究探讨了向宿主二化酶 (DUBs) 的方法,以对抗抗生素耐药性. 一种DUB抑制剂AZ-1显示出对抗细菌感染的前景,特别是与抗生素结合使用时.

科学领域:

微生物学微生物学
免疫学免疫学免疫学
药理学药理学是指药理学的学科.

背景情况:

抗生素耐药细菌构成了全球主要的健康威胁.
主体向疗法 (HTTs) 提供了针对感染的新策略.
脱化酶 (DUBs) 调节了泛素-蛋白酶系统 (UPS) 和宿主-病原体相互作用.

研究的目的:

调查针对DUBs作为宿主导的抗微生物策略的潜力.
评估小分子DUB抑制剂AZ-1对细菌感染的疗效.
探索DUBs在细菌感染期间宿主免疫反应中的作用.

主要方法:

使用沙门氏菌感染的巨细胞作为模型系统.
在试验室和小鼠模型中使用DUB抑制剂AZ-1.
进行了转录基因分析以确定受调节的途径.
评估了细菌负载,宿主体重和免疫反应 (例如TNF-α).

主要成果:

在体内,AZ-1显著降低了细胞内细菌负载和早期疾病严重程度.
AZ-1 显示出针对多种耐药性病原体的广泛活性,例如 Pseudomonas aeruginosa 和 Klebsiella pneumoniae.
结合治疗AZ-1和抗生素增强了细菌清除.
鉴定出特定的DUBs (USP25,USP46,Otud7b) 在感染期间表达变化.

结论:

通过DUB抑制准UPS是一种可行的宿主导型抗菌方法.
AZ-1显示出作为治疗剂的潜力,特别是在组合疗法中.
对DUB的进一步研究可以导致针对抗菌素耐药性的创新治疗方法.

关键词:

抗微生物耐药性 (AMR) 是一种脱化酶 (DUBs) 是一种脱化酶.逃离病原体的可能主体向疗法 (HTTs) 是一种针对主体的疗法.免疫调节免疫调节巨细胞的反应反应沙门氏菌是一种沙门氏菌.美国P25抑制剂AZ-1 乌比基-蛋白酶体系统 (UPS) 是一种细菌感染细菌感染

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