Orf132:LSDV复制的关键基因及其在Er压力相关的亡中的作用
Yongtao Wang1, Shiwei Zhang1, Hailing Li1
1Key Laboratory of Livestock Infectious Diseases, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Ministry of Education, Shenyang Agricultural University, 120 Dongling Road, Shenyang, 110866, China.
Virology journal
|May 30, 2025
概括
结节性皮肤病病毒 (LSDV) Orf132基因对于病毒复制至关重要,并抑制内细胞网膜压力. 删除Orf132会损害LSDV的复制,并引发细胞亡,影响病毒.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 型皮肤病 (LSD) 是一种由LSDV引起的新兴牛病.
- LSDV与山羊病毒 (GTPV) 共享基因组同质性,这表明交叉免疫性.
- 一个独特的LSDV基因,Orf132,具有一个未被描述的功能.
研究的目的:
- 为了研究独特的LSDV Orf132基因的生物学作用.
- 确定Orf132对病毒复制和宿主细胞反应的影响.
主要方法:
- 产生了一个Orf132删除菌株 (LSDV-ΔOrf132).
- 进行了对比基因组分析,证实了Orf132的免疫活性.
- 对感染的MDBK细胞进行了转录基因分析.
- 使用qRT-PCR和执行的亡试验验验证了ER压力标志物.
主要成果:
- 删除Orf132将LSDV的复制能力降低了十倍.
- 删除Orf132显著改变了ER蛋白的处理,并展开了蛋白质反应途径.
- 在LSDV-ΔOrf132感染细胞中,ER压力标志物 (Grp78,Chop,Gadd34) 的上调.
- 删除Orf132引发了CHOP-Caspase-12-介导的亡.
- 添加ORF132蛋白抑制了ER压力并挽救了病毒复制.
结论:
- Orf132对于LSDV复制是必不可少的.
- Orf132 作为内质网膜应激的负调节剂.
- 在LSDV生命周期中,Orf132通过防止ER应激诱导的亡,发挥着至关重要的作用.
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