凯瑟利西丁CATH-B1通过直接相互作用和TLR4/JNK/IRF3介导的干扰素激活来抑制伪狂热病毒感染
Chao Ye1, Chao Wan1, Jing Chen1
1Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China.
Journal of virology
|June 14, 2023
概括
类甲基西丁B1 (CATH-B1) 通过破坏病毒结构和增强宿主免疫力,有效抑制伪狂犬病病毒 (PRV). 这种激活了干扰素-β通路,为猪业提供了一个有前途的新抗病毒策略.
科学领域:
- 兽医病毒学 兽医病毒学
- 免疫学 免疫学 免疫学
- 抗微生物是一种抗微生物.
背景情况:
- 伪狂犬病病毒 (PRV) 对全球猪业构成重大威胁,需要超越疫苗接种的新型抗病毒战略.
- 凯瑟利基丁 (CATHs) 是具有已知的抗菌性能的宿主防御,在免疫反应中发挥作用.
- 凯瑟利西丁对抗PRV感染并调节宿主抗病毒反应的精确机制需要进一步阐明.
研究的目的:
- 为了研究肉cathelicidin B1 (CATH-B1) 对PRV感染的抗病毒功效.
- 阐明CATH-B1抑制PRV的基础机制,包括直接病毒无活化和宿主抗病毒免疫的调节.
- 为了确定在CATH-B1介导的抗病毒反应中涉及的特定信号通路.
主要方法:
- 肉甲素B1 (CATH-B1) 的化学合成.
- 在体外和体内测试以评估CATH-B1对PRV感染的抑制作用.
- 分析PRV病毒结构,病毒结合和进入抑制.
- 评估宿主免疫反应,包括干扰素-β (IFN-β) 和IFN刺激基因 (ISG) 表达.
- 研究信号通路,包括TLR4,JNK和IRF3激活.
主要成果:
- 在CATH-B1的研究中,在感染前,同时和感染后的治疗条件中,CATH-B1显著抑制了PRV感染,无论是体外还是体外.
- 通过破坏病毒结构,CATH-B1直接禁用PRV,并抑制病毒结合和进入.
- 用CATH-B1进行预治疗通过增加基底IFN-β和ISG表达来增强宿主抗病毒免疫力.
- CATH-B1激活了TLR4/JNK信号通路,导致IRF3酸化和随后的IFN-β产生,从而减少了PRV感染.
结论:
- CATH-B1对PRV表现出多方面的抗病毒活性,包括直接的病毒无活化,病毒进入的抑制和宿主抗病毒免疫力的强化.
- 该研究阐明了CATH-B1的作用机制,强调其在激活通过TLR4/JNK的IRF3/IFN-β信号通路中的作用.
- CATH-B1代表了开发新型抗微生物基治疗新型抗猪PRV感染的有希望的候选人.
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