β-葡萄糖重编程中性粒细胞以促进对流感A病毒的耐病性
Nargis Khan1,2, Kim A Tran3, Raphael Chevre4
1Department of Medicine, Department of Pathology, Department of Microbiology & Immunology, McGill University Health Centre, McGill International TB Centre, Meakins Christie Laboratories, McGill University, Montréal, Québec, Canada. nargis.khan1@ucalgary.ca.
Nature immunology
|January 8, 2025
概括
贝塔葡萄糖通过重新编程先天免疫来提高对流感A病毒的生存率. 它促进调节性中性粒细胞维持肺组织完整性,证明了一种新的疾病耐受性机制.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 宿主-病原体相互作用
背景情况:
- 耐病性是一种宿主防御策略,在不减少病原体负载的情况下保持生理学,但其机制尚不清楚.
- 研究新的策略,以提高对病毒感染的耐受性,如流感A病毒 (IAV).
研究的目的:
- 确定辅助剂β-葡萄糖是否可以重编程天生的免疫力,以防止IAV感染.
- 阐明β-葡萄糖赋予疾病耐受性的机制.
主要方法:
- 在IAV感染之前用β-葡萄糖治疗小鼠.
- 对宿主免疫反应的分析,包括中性粒细胞的招募,颗粒构造和细胞因子的产生.
- 评估宿主存活率,发病率和肺组织完整性.
主要成果:
- 接受β-葡萄糖治疗显著降低了IAV诱导的发病率和死亡率,独立于宿主耐药性.
- 改善的生存率与肺组织中通过RoRγt+ T细胞增加的中性粒细胞招募有关.
- β-葡萄糖以1型干扰素依赖的方式促进了颗粒形成,产生IL-10,产生具有氧化代谢的中性粒细胞.
结论:
- β-葡萄糖重新编程造血干细胞以产生调节性中性粒细胞.
- 这些中性粒细胞对于促进疾病耐受性和在病毒感染期间保持肺部完整性至关重要.
- 这项研究揭示了一种通过免疫重编程增强宿主防御的新机制.
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