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肉DDX21通过调节I型干扰素信号通路来抑制H9N2禽流感病毒复制

Mengdi Wang¹, Miaoxiang Zhang¹, Junwei Yang¹

¹College of Animal Science and Technology, Guangxi University, Nanning, Guangxi 530004.

Developmental and comparative immunology

|February 28, 2026

概括

肉DDX21 (chDDX21) 增强了对H9N2禽流感病毒的抗病毒免疫力. 它激活了I型干扰素路径,抑制病毒复制并促进的先天免疫反应.

科学领域:

病毒学病毒学
免疫学免疫学免疫学
分子生物学分子生物学

背景情况:

H9N2禽流感病毒 (AIV) 在中引起严重的呼吸系统疾病,并构成公共卫生风险.
死亡盒RNA螺旋酶DDX21在流感感染期间对哺乳动物的先天免疫是至关重要的.
鸟类的正经体,DDX21 (chDDX21) 和其在抗病毒防御中的功能是不太了解的.

研究的目的:

调查DDX21 (chDDX21) 对H9N2 AIV感染的反应中的作用和调节机制.
阐明chDDX21在的天生的免疫系统中的参与及其对病毒复制的影响.

主要方法:

对DDX21 (chDDX21) 基因进行克隆和生物信息学分析.
在H9N2 AIV感染后的组织和细胞中对chDDX21mRNA表达的定量分析.
功能性检测包括促进体激活,域分析,共传染,以及对抗病毒基因表达和病毒复制的评估.

主要成果:

克隆了chDDX21基因并进行了遗传学分析,显示在健康的组织中广泛分布.
H9N2 AIV感染在肉组织和细胞中显著上调chDDX21mRNA表达.
过度表达chDDX21激活了IFN-β促进体,调节了TLR3介导的I型干扰素信号通路,增加了抗病毒基因表达,并抑制了H9N2 AIV复制.

结论:

chDDX21在对H9N2 AIV的天生的免疫反应中发挥着关键作用.
chDDX21通过积极调节TLR3介导的I型干扰素信号通路来抑制H9N2 AIV复制.
这项研究为鸟类对AIV的天生的免疫反应提供了关键的见解,确定chDDX21作为一个重要的调节器.

关键词:

肉肉肉肉 DDX21 DDX21 是一个字母.这就是H9N2 AIV.复制复制复制复制复制复制复制一类干扰子信号通路的信号通路.

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