E3酶RNF5通过抑制群体内先天性免疫反应促进病毒复制
Yanqi Zhao1, Xiaohui Zheng1, Siting Wu1
1College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
Fish & shellfish immunology
|January 14, 2026
概括
在鱼中发现的环指蛋白5 (RNF5) 增强了新加坡鱼虹膜病毒 (SGIV) 和红斑鱼神经缩病毒 (RGNNV) 的复制. 这种蛋白质抑制抗病毒免疫反应,帮助鱼类病毒的致病性.
科学领域:
- 水生动物的健康状况.
- 鱼类免疫学 鱼类免疫学
- 病毒病原发生的病毒病原体.
背景情况:
- 新加坡小虹膜病毒 (SGIV) 和红斑小神经亡病毒 (RGNNV) 在小水产养殖中造成重大损失.
- 环指蛋白5 (RNF5) 的作用,E3泛基因酶,在teleost抗病毒免疫力中并未得到充分理解.
研究的目的:
- 为了识别和描述来自Epinephelus coioides的EcRNF5基因.
- 研究EcRNF5在对SGIV和RGNNV的抗病毒先天免疫中的功能.
主要方法:
- 对EcRNF5.5的基因鉴定和序列分析.
- 在病毒后的挑战中,鼠脏细胞的表达分析.
- 在体外测试以评估病毒复制和免疫基因表达.
- 同免疫沉测试以确定蛋白质相互作用.
主要成果:
- 在SGIV和RGNNV感染时,ecRNF5表达被上调.
- 过度表达EcRNF5促进了SGIV和RGNNV复制.
- EcRNF5抑制了与干扰素相关的基因和促炎细胞因子的表达.
- EcRNF5与关键的先天性免疫信号分子 (EcSTING,EcTBK1,EcIRF3,EcIRF7) 相互作用,并抑制了它们的信号通路.
结论:
- EcRNF5在对抗鱼的抗病毒免疫力方面发挥着至关重要的作用.
- 这些发现阐明了EcRNF5在促进SGIV和RGNNV致病性方面的分子机制.
- 这项研究提供了关于鱼病毒相互作用和疾病控制的潜在目标的见解.
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