来自被Streptococcus parauberis感染的橄油的外体:蛋白质组分析,免疫调节和抗病能力
E H T Thulshan Jayathilaka1, Shan Lakmal Edirisinghe1, Mahanama De Zoysa1
1College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea.
Fish & shellfish immunology
|March 7, 2024
概括
感染了Streptococcus parauberis (Sp-Exo) 鱼的外体细胞增强了鱼类对细菌感染的免疫力. 在斑马鱼中,Sp-Exo治疗增强了免疫基因表达和抗病能力,显示出疫苗的潜力.
科学领域:
- 水产养殖免疫学 水产养殖免疫学
- 外体生物学的外体生物.
- 鱼类疾病耐药性 鱼类疾病耐药性
背景情况:
- 耐多药性Streptococcus parauberis在水产养殖中导致显著的死亡率.
- 需要创新的策略来控制鱼类中的S. parauberis感染.
- 外体体显示出潜力作为水产养殖中的治疗剂.
研究的目的:
- 开发一种针对S. parauberis的免疫剂,使用受感染橄花 (Sp-Exo) 的外体.
- 在体外和体内评估Sp-Exo的免疫调节作用和保护能力.
- 为了识别由Sp-Exo调节的蛋白质和通路.
主要方法:
- 从感染S. parauberis和以前没有感染过鱼的血中分离出外体.
- 使用RAW264.7巨细胞进行体外免疫调节试验.
- 在体内研究幼虫和成年斑马鱼,以评估免疫反应和抗病能力.
- 蛋白质组分析 (iTRAQ) 用于在Sp-Exo中识别差异表达蛋白质 (DEP).
- 生物信息分析 (GO,KEGG,STRING) 用于确定相关途径.
主要成果:
- 在体外,Sp-Exo显著上调了促炎性 (Il1β,Tnfα),抗炎性 (Il10),抗菌性 (Def-rs2,Def-ps1) 和抗病毒性 (Ifnβ1,Isg15) 基因.
- 与对照组相比,用Sp-Exo治疗的斑马鱼对S. parauberis感染的抵抗力增加.
- 蛋白质组分析在Sp-Exo中发现了许多DEP,与先天免疫,补充系统和脂质代谢途径有关.
结论:
- Sp-Exo具有强大的免疫调节活性,并对S. parauberis感染提供显著的保护.
- 蛋白质组数据支持Sp-Exo在免疫诱导和调节中的作用.
- 斯普埃克索代表了一种有希望的疫苗候选人,用于控制S. parauberis和其他细菌感染在橄花.
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