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预先存在的过敏炎症改变了与流感病毒同时感染的小鼠的先天性和适应性免疫反应

Dan Li^1,2, T Anienke van der Veen^1,2, Linsey E S de Groot³

¹Groningen Research Institute of Pharmacy, Department of Molecular Pharmacology, University of Groningen, 9713 AV Groningen, The Netherlands.

International journal of molecular sciences

|May 7, 2025

概括

由于暴露于室内灰尘虫,先前存在的过敏炎症会损害感染流感的小鼠的抗病毒免疫力. 这导致免疫反应不发达,这可能解释了喘患者的严重病毒感染.

科学领域:

免疫学免疫学免疫学
呼吸系统医学呼吸系统医学
传染性疾病传染性疾病

背景情况:

喘是一种慢性呼吸道疾病,其特征是过敏性炎症.
流感感染可能会导致喘患者的严重恶化.
连接喘和严重病毒感染的机制尚未完全理解.

研究的目的:

为了研究先前存在的过敏炎症如何影响对流感感染的免疫反应.
在小鼠模型中探索家用灰尘虫 (HDM) 引起的过敏和流感A病毒感染之间的相互作用.

主要方法:

鼠被暴露在HDM中以诱发过敏性炎症.
随后,小鼠被感染了流感A病毒.
通过血免疫球蛋白分析,肺免疫细胞流细胞计和RNA测序来评估免疫反应.

主要成果:

暴露于HDM导致过敏性炎症,增加IgE,IgG1,IgG2,乙素,中性素,Th1和Th17细胞.
与HDM和流感的同时感染导致较少的Th1和调节性T细胞,与单独的流感感染相比,更多的Th2细胞.
RNA测序显示,同感染小鼠的Th1相关基因和抗病毒途径的上调减少,表明Th1免疫力和抗病毒反应受损.

结论:

预先存在的过敏性炎症在流感共感染期间显著改变了免疫反应.
早在感染后三天,在患有过敏性炎症的小鼠中观察到欠发达的抗病毒反应.
这些发现表明,喘患者对严重病毒性疾病的敏感性增加的潜在机制.

关键词:

在 Th1 细胞中.在Th2细胞中.过敏是一种过敏.喘喘是一种房子的灰尘虫的虫中性粒细胞中性粒细胞.

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