相关实验视频

Updated: May 23, 2025

Rescue of Recombinant Newcastle Disease Virus from cDNA

Rescue of Recombinant Newcastle Disease Virus from cDNA

Published on: October 11, 2013

日本脑炎病毒NS1通过与DDX3XX相互作用来抑制IFN-β的产生

Hao Dong¹, Yue Hao¹, Jue Wang¹

¹Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Beijing University of Agriculture, Changping, Beijing, China.

Journal of virology

|April 15, 2025

概括

日本脑炎病毒 (JEV) 使用其NS1蛋白质阻止宿主病毒.

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:

日本脑炎病毒 (JEV) 对养猪和人类健康构成重大威胁.
为了成功复制,JEV已经发展出了逃避宿主天生的免疫反应的机制.
精确的JEV病变的分子机制,特别是涉及非结构蛋白1 (NS1),仍然不清楚.

研究的目的:

为了研究JEV NS1与宿主蛋白之间的相互作用.
阐明宿主蛋白DDX3X在JEV感染和天生的免疫力中的作用.
了解JEV在分子层面上的免疫规避策略.

主要方法:

对与JEV NS1相互作用的宿主蛋白进行查.
使用异位表达和病毒编码的NS1.1,确认NS1-DDX3X相互作用.
通过过度表达和沉默研究分析DDX3X在JEV复制和干扰素-β (IFN-β) 生产中的作用.

主要成果:

JEV NS1通过其β-roll和翅膀子域直接与宿主蛋白质ATP依赖的RNA螺旋酶DEAD-box螺旋酶3X (DDX3X) 相互作用.
DDX3X作为一种抗病毒因子,抑制了JEV的复制;它的沉默增强了病毒标位.
DDX3X促进IFN-β和干扰素刺激基因 (ISG) 的转录,而JEV NS1结合抑制了这一途径.

结论:

JEV NS1通过与DDX3X结合而逃避宿主天生的免疫反应,从而抑制I型干扰素的产生并促进病毒的复制.
通过促进干扰素反应,DDX3X作为对JEV的关键抗病毒因子起作用.
这些发现揭示了一个新的JEV免疫逃避机制,并确定了治疗减弱的潜在目标.

关键词:

这是一个DDX3XX.如果是IFN-β,那么它是什么?这就是ISG的意义.日本脑炎病毒 (JEV)非结构蛋白1 (NS1) 是一种非结构蛋白.

更多相关视频

Bacterial Artificial Chromosomes: A Functional Genomics Tool for the Study of Positive-strand RNA Viruses

Bacterial Artificial Chromosomes: A Functional Genomics Tool for the Study of Positive-strand RNA Viruses

Published on: December 29, 2015

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique

Published on: September 23, 2022

相关概念视频

Immune Response Against Viral Pathogens

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...