加斯德明E在小鼠的H1N1流感病毒发病过程中不可缺少
Samuel Speaks1,2, Jonathan Papa1,2, Matthew McFadden1,2
1Department of Microbial Infection and Immunity, Wexner College of Medicine, The Ohio State University, Columbus, OH 43210, USA.
bioRxiv : the preprint server for biology
|August 6, 2025
概括
加斯德明E (GSDME) 介导的热并不显著影响H1N1流感病毒感染的结果. 在感染流感的小鼠中,GSDME缺乏没有显示出疾病严重程度或宿主反应的差异.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 细胞死亡途径,包括热和死,对于减轻流感病毒感染严重程度至关重要.
- 加斯德明E (GSDME) 是热中形成孔隙的关键蛋白质,但其在流感病原发生中的具体作用尚不清楚.
研究的目的:
- 调查GSDME驱动的热在调节流感病毒感染结果中的作用.
- 为了确定GSDME缺乏是否影响宿主反应和H1N1流感感染期间的疾病严重程度.
主要方法:
- 在感染模型中使用了Gsdme淘汰 (Gsdme-/-) 和野生型 (WT) 鼠标.
- 感染了严重的A/PR/8/34 (H1N1) 和2009年大流行H1N1流感病毒的小鼠.
- 评估结果包括减肥,生存,肺功能障碍,组织病理学,病毒标位,细胞因子水平和全球转录组学.
主要成果:
- 经过H1N1感染后,Gsdme-/-小鼠的体重减轻,生存率和肺功能障碍与WT对应物相比是相似的.
- 组织病理损伤,病毒载荷和炎症性细胞因子概况在Gsdme-/-和WT小鼠之间是可比的.
- 全球转录组分析显示,在炎症和抗病毒基因表达程序中没有显著差异.
结论:
- 在宿主对H1N1流感病毒感染的反应中,GSDME的作用是微不足道的.
- 这些发现完善了对细胞死亡途径的理解,特别是GSDME介导的热,在流感病原体的背景下.
相关概念视频
Viral Recombination
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Cytomegalovirus Disease
Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Influenza
Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...


