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在体内抑制JAK-STAT信号增强高致病性流感病毒在子中的复制

Juliette Gross¹, Bertille Pouget¹, Margot Sarrat¹

¹Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement, Toulouse, France.

The Journal of general virology

|March 2, 2026

概括

卢克索利提尼布是一种JAK-STAT抑制剂,在感染禽流感的子中进行了测试. 该药物抑制了先天性免疫反应,增加了病毒复制而没有恶化临床症状.

科学领域:

兽医病毒学兽医病毒学
免疫学免疫学免疫学
传染性疾病传染性疾病

背景情况:

高致病性禽流感病毒 (HPAIV) 在中引起严重疾病,但在子中引起较轻的感染.
与HPAIV感染期间的相比,子表现出明显的I型干扰素 (IFN) 反应和细胞因子表达特征.
早期的先天性免疫反应在控制子中HPAIV复制中的作用仍然不完全理解.

研究的目的:

研究早期抗病毒先天免疫反应在控制子HPAIV复制中的作用.
评估Ruxolitinib,一个Janus酶信号传感器和转录激活器 (JAK-STAT) 途径抑制剂,对子的HPAIV感染的影响.

主要方法:

在2周大的小中优化了ruxolitinib治疗方案,比较肠内注射和口服.
评估了ruxolitinib对子肺中的干扰素刺激基因 (ISG) mRNA水平的影响.
感染H5N9 HPAIV菌株的幼和分析的病毒分泌,病毒RNA水平,以及呼吸道中的宿主免疫基因表达.

主要成果:

重复内内注射鲁克索利提尼布显著降低了子肺中的ISGmRNA水平;口服无效.
在HPAIV感染的子中,鲁克索利提尼布治疗导致病毒分泌的峰值更早,呼吸道组织中的病毒RNA水平增加.
抑制ISG表达是暂时的,在停止治疗后恢复,并且与增加的临床症状无关.

结论:

鲁克索利提尼布有效地抑制了子的抗病毒天生的免疫反应.
使用鲁克索利提尼布抑制先天免疫反应,可增加HPAIV感染的病毒复制.
这项研究强调了早期天生的免疫反应在控制子禽流感病毒中的关键作用.

关键词:

禽流感是禽流感的一种.一个子,一个子,一个子.这是先天免疫力.卢克索利提尼布 (Ruxolitinib) 是一种药物.

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