支气管上皮转录组揭示了干扰的干扰和炎症反应,以恶化易发的儿科喘的犀利病毒
Naresh Doni Jayavelu1, Basilin Benson1, Patricia C Dela Cruz2
1Systems Immunology Division, Benaroya Research Institute at Virginia Mason, Seattle, Washington, USA.
患有喘易恶化的儿童由于基线干扰素活性较低,表现出较高的鼻病毒复制和夸张的免疫反应. 预防性干扰素治疗可以降低病毒载量并使反应正常化.
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
- 病毒学 病毒学
背景情况:
- 影响由犀牛病毒引起的喘恶化的主体因素尚不清楚.
- 喘恶化通常是由病毒感染引发的,如鼻病毒.
研究的目的:
- 调查影响喘儿童鼻病毒易感性的宿主因素.
- 在支气管上皮培养中描述病毒载荷动力学和宿主反应.
主要方法:
- 来自患有喘的儿童和健康对照者的器官类型支气管上皮培养物.
- 大量和单细胞转录组学.
- 向蛋白质分析和干扰素刺激基因表达 (ISG) 分析.
主要成果:
- 患有恶化倾向的儿童的支气管上皮表现出增加的鼻病毒复制和夸张的干扰素 (IFN),炎症,压力和重塑反应.
- 单细胞转录组学确定了特定的细胞类型贡献,特别是非化细胞.
- 较低的感染前IFN刺激基因 (ISG) 表达和CXCL10水平与增加的易感性有关.
结论:
- 低基线干扰素基调是儿童喘中对不良鼻病毒反应敏感性的可修改决定因素.
- 预防性干扰素-β (IFN-β) 治疗减少了病毒复制和使宿主反应正常化.
- 向干扰素途径可能是预防喘恶化的一种治疗策略.
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