颗粒细胞殖民地刺激因子以一种依赖于IFN的I型IFN方式保护对关节性阿尔法病毒病原体的保护
Muddassar Hameed1,2,3, Md Shakhawat Hossain1,2, Andrea R Daamen4
1Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA.
bioRxiv : the preprint server for biology
|October 17, 2024
概括
颗粒细胞殖民地刺激因子 (G-CSF) 在控制诸如 chikungunya 等阿尔法病毒感染方面发挥着关键作用. 阻止I型干扰素信号传递恢复了小鼠的G-CSF受体功能,改善了结果.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 关节性阿尔法病毒,如 chikungunya 病毒 (CHIKV) 和mayaro 病毒 (MAYV),导致严重的关节疼痛和炎症.
- 颗粒细胞殖民地刺激因子 (G-CSF) 是一种细胞因子,对髓状细胞发育至关重要,在 chikungunya 感染期间会升高,但其在 alfavirus 病原发生中的具体作用尚不清楚.
研究的目的:
- 研究G-CSF信号在宿主对CHIKV和MAYV感染的反应中的作用.
- 确定G-CSFR缺乏对阿尔法病毒诱导疾病严重程度和免疫细胞群的影响.
主要方法:
- 使用了G-CSFR缺陷 (G-CSFR-/-) 的小鼠和感染CHIKV或MAYV的野生型 littermates.
- 在感染期间监测体重减轻,存活率和特征免疫细胞群 (中性粒细胞,单细胞).
- 研究了阻断I型干扰素 (IFN) 信号传递对G-CSFR-/-小鼠疾病结果的影响.
主要成果:
- 与野生型小鼠相比,G-CSFR-/-小鼠在感染阿尔法病毒后表现出加剧的体重减轻和减少中性粒细胞,但炎症单细胞增加.
- 在G-CSFR-/-小鼠中阻断I型IFN信号改善了观察到的体重减轻,表明IFN和G-CSF通路之间的联系.
- 这些发现凸显了G-CSFR信号传递在控制阿尔法病毒感染中的关键作用.
结论:
- 类型I的IFN信号传递对于G-CSF受体介导的关节性阿尔法病毒疾病的控制至关重要.
- 在阿尔法病毒感染期间,G-CSF信号影响中性粒细胞和炎症单细胞的平衡.
- 针对G-CSF和I型IFN通路之间的相互作用可能为阿尔法病毒感染提供治疗策略.
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