乙类猎物受体2在大嘴鱼拉纳病毒感染中起到前病毒性因素作用
Feixiang Zhang1, Yiqun Li2, Nan Jiang2
1College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China; Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China.
Fish & shellfish immunology
|February 28, 2026
概括
大口的拉纳病毒劫持了食尸体受体类B类成员2 (MsSRB2) 进行复制. 抑制MsSRB2可以提高鱼类的生存率,降低病毒载量,提供新的疾病控制策略.
科学领域:
- * 鱼类免疫学和病毒学
- * 病毒病原化的分子机制.
背景情况:
- * 大口拉纳病毒 (LMBRaV) 在水产养殖业造成重大经济损失.
- *在鱼类抗病毒免疫力中,食尸体受体类B类成员2 (SRB2) 的作用尚不清楚.
研究的目的:
- * 为了研究M.salmoides SRB2 (MsSRB2) 在LMBRaV感染中的功能.
- * 为了阐明 MsSRB2 和 LMBRaV 之间的相互作用.
主要方法:
- * MsSRB2.2的序列分析和表达形状 (qRT-PCR) 分析.
- * 用 LMBRaV MCP 在 EPC 细胞中的亚细胞局部化和共局部化研究.
- *体外 (细胞培养) 和体内 (鱼类) 实验评估 MsSRB2 功能.
主要成果:
- * MsSRB2 在脊椎动物中保存,主要在心脏中表达.
- * MsSRB2表达在,脏和肝脏中对LMBRaV感染的反应中发生变化.
- * MsSRB2 局限于晚期内分泌体,并与 LMBRaV MCP 共局限.
- * MsSRB2的过度表达抑制了体外病毒的复制,而淘汰则增加了鱼类的生存率,并减少了体内病毒载荷.
结论:
- * MsSRB2 作为 LMBRaV 的细胞内受体,促进病毒复制和免疫逃避.
- * 针对 MsSRB2 是一种潜在的策略,可以控制鱼类中的 ranavirus 疾病.
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