来自斑点刀 (Oplegnathus punctatus) 的三种hepcidins通过TLR/NFκB通路促进抗菌活性
Jie Wang1, Yadong Chen2, Yu Song2
1State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China.
Fish & shellfish immunology
|October 13, 2024
概括
斑点的刀肝素 (OpHeps) 显示出抗菌活性,并增强鱼类对Vibrio harveyi感染的免疫力. 这些发现凸显了OpHeps作为水产养殖中疾病耐药性的潜在目标.
科学领域:
- 免疫学 免疫学 免疫学
- 海洋生物学 海洋生物学
- 遗传学 是一个遗传学.
背景情况:
- 肝素是一种富含氨酸的抗微生物,在肝脏中合成,对宿主防御至关重要.
- 它在鱼类免疫力中的作用,特别是在像斑点刀这样的物种中,需要进一步阐明.
研究的目的:
- 在斑点刀中识别和表征肝素基因 (OpHeps).
- 研究OpHeps在对细菌感染的反应中的表达模式,功能和免疫机制.
主要方法:
- 在斑点刀中基因识别和表征.
- 对Vibrio harveyi感染的反应中的基因表达分析.
- RNA干扰 (RNAi) 敲除和重组蛋白质测试.
- 在斑马鱼中的过度表达研究和随后的挑战V. harveyi.yi.
主要成果:
- 在斑点刀中发现了三种hepcidin基因 (OpHep1,OpHep2,OpHep3),它们具有保存的结构特征.
- 在健康组织中表达了OpHeps,在Vibrio harveyi感染后显著上调,并在敲击时影响了炎症基因表达.
- 再组合的OpHeps表现出广泛的抗菌活性;斑马鱼的过度表达增强了免疫基因表达和对V. harveyi感染的生存率.
结论:
- 肝素在鱼类对细菌病原体的天生的免疫力中发挥着重要作用,可能通过TLR/NFκB信号通路和lyszyme.
- 在斑点刀水产养殖中,OpHeps是开发疾病抵抗策略的有希望的候选人.
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