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Updated: Jan 13, 2026

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新型TRIM蛋白调节彩虹鱼 (Oncorhynchus mykiss) 的天生的免疫反应

Francisco Donoso^1,2, Felipe Ramírez-Cepeda², Nicolás Salinas-Parra²

¹Department of Anatomy and Neuroscience, APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland.

Animals : an open access journal from MDPI

|January 10, 2026

概括

三方基因 (TRIM) 蛋白对鱼类免疫非常重要. 这项研究在彩虹鱼中发现了新的TRIM蛋白,揭示了它们在调节对细菌和病毒挑战的炎症反应中的作用,证实了它们的免疫调节功能.

科学领域:

免疫学免疫学免疫学
水生动物卫生水生动物卫生
分子生物学分子生物学

背景情况:

三方基因 (TRIM) 蛋白调节脊椎动物的免疫反应,包括炎症,抗病毒防御,自和炎症酶激活.
虽然TRIM蛋白在一些鱼类如鱼类和鱼类中已知,但它们在水生动物中的特定功能和分子机制仍未得到充分探索.
彩虹鱼 (Oncorhynchus mykiss) 在商业上很重要,了解它们的免疫系统对水产养殖至关重要,特别是对抗像Flavobacterium psychrophilum这样的细菌病原体.

研究的目的:

描述涉及彩虹鱼状细胞天生的免疫力中的新型三方基因 (TRIM) 蛋白质.
调查特异性TRIM蛋白的表达和功能,如OmTRIM25,对免疫刺激和细菌感染的反应.
阐明OmTRIM25在调节炎性细胞因子产生中的作用及其在彩虹鱼中的整体免疫调节功能.

主要方法:

在体外刺激彩虹鱼状细胞 (RTgill-W1和初级培养) 用脂多糖 (LPS) 和多酸-多酸 (多I:C).
在体内挑战彩虹鱼与细菌病原体Flavobacterium psychrophilum,以分析中的TRIM蛋白表达.
使用RNA干扰 (RNAi) 进行基因沉默,以评估OmTRIM25.25的免疫作用并确认其免疫调节功能.

主要成果:

实验室研究表明,OmTRIM25的表达是由LPS诱导的,导致增强的炎症性细胞因子TNF-α2和IL-1β的表达.
在体内,OmTRIM25和finTRIM2在F. psychrophilum感染后两天 (dpi) 在彩虹鱼上升调节.
促炎性细胞因子IL-1β和TNF-α2在细菌挑战后,分别在4dpi和6dpi显示了基因表达的峰值.
通过RNA干扰介导的OmTRIM25基因沉默证实了它在彩虹鱼天生的免疫力中的显著免疫调节作用.

结论:

包括OmTRIM25在内的新型TRIM蛋白在彩虹鱼的天生的免疫反应中发挥着重要作用.
OmTRIM25参与由细菌 (LPS,F.psychrophilum) 和病毒 (多I:C) 刺激引发的炎症级联.
这项研究证实了OmTRIM25的免疫调节功能,强调了它作为增强鱼类对病原体免疫力的目标潜力.

关键词:

这种细菌名为Flavobacterium psychrophilum.在LPS中使用LPS.在 Oncorhynchus mykiss 的研究中.这就是PAMP的信号.含有三部分基因的蛋白质.鱼类天生的免疫学鱼类天生的免疫学聚 I:C:C 的使用.

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