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鱼类腐烂加速因子 (DAF) 调节肠道补充路径和对细菌挑战的免疫反应
Xia Zhang1, Yuhan Zhang2, Ting Wu2
1Hunan Provincial Key Laboratory of Nutrition and Quality Control of Aquatic Animals, Department of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China; State Key Laboratory of Developmental Biology of Freshwater Fish, Department of Life Sciences, Hunan Normal University, Changsha, 410081, China.
Fish & shellfish immunology
|July 4, 2024
概括
草中的衰变加速因子 (DAF) 负面调节了肠道对细菌感染的免疫反应. 增强DAF功能减少了炎症和调节补充通路,为鱼类免疫提供了洞察力.
科学领域:
- 免疫学 免疫学 免疫学
- 鱼类生物学 鱼类生物学
- 补充系统 补充系统
背景情况:
- 衰变加速因子 (DAF) 对于哺乳动物免疫恒温至关重要.
- 在骨鱼中,特别是肠道中,DAF的免疫作用仍未得到充分研究.
- 了解鱼类中的DAF功能对于水产养殖和疾病管理至关重要.
研究的目的:
- 为了从Ctenopharyngodon idella (草鱼) 中描述CiDAF.
- 调查CiDAF在细菌感染后肠道免疫力中的作用.
- 探索CiDAF作为治疗肠道炎症的治疗点的潜力.
主要方法:
- 描述CiDAF基因和蛋白质结构的特征.
- 在各种组织和病原体挑战后对基因表达的分析.
- 在体内RNA干扰 (RNAi) 来评估CiDAF的淘汰效应.
- 在体外实验中使用CiDAF激动剂 (孕激素) 治疗炎症.
主要成果:
- CiDAF表现出保存的CCP域和广泛的组织表达,在脏和脏中含量很高.
- CiDAF表达对细菌病原体和PAMP (LPS,MDP) 有显著的反应.
- 降低CiDAF对补充基因和炎症性细胞因子进行了上调;CiDAF激动剂缓解了肠道炎症.
结论:
- 在草鱼中,CiDAF充当肠补充路径的负调节者.
- 在鱼类对细菌挑战的免疫反应中,CiDAF起着重要作用.
- 调节CiDAF活性为管理草鱼肠道炎症提供了潜在的策略.
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