IL-8的mRNA和蛋白质通过核蛋白和14-3-3γ对抗调节PRRSV复制
Yingchao Li1, Jiaqi Liu1, Dexin Li1
1Department of Fundamental Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong, China.
Journal of virology
|July 24, 2025
概括
细胞蛋白14-3-3γ抑制了猪生殖和呼吸系统综合征病毒 (PRRSV) 的复制. 洲际蛋白-8 (IL-8) 蛋白抑制PRRSV,14-3-3γ和IL-8可以竞争性地结合病毒N蛋白.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 猪生殖和呼吸系统综合征病毒 (PRRSV) 在猪业中造成重大经济损失.
- 了解宿主-病原体相互作用对于开发有效的抗病毒策略至关重要.
研究的目的:
- 为了确定调节PRRSV复制的细胞因子.
- 阐明在PRRSV感染中介素-8 (IL-8) 的调节机制.
- 探索IL-8作为抗病毒治疗点的潜力.
主要方法:
- 细胞蛋白14-3-3γ作为抗病毒因子的鉴定.
- 在PRRSV感染期间分析IL-8mRNA和蛋白质水平.
- 研究病毒核体 (N) 蛋白的核定位信号 (NLS) 的作用.
- 同免疫沉试验用于研究蛋白质与蛋白质相互作用.
主要成果:
- 14-3-3γ通过降低IL-8 mRNA的调节来抑制PRRSV的复制.
- IL-8蛋白具有强大的PRRSV复制抑制作用.
- PRRSV N 蛋白通过其 NLS (aa 11-13, K10/K12) 上调 IL-8 转录,需要核定位.
- 14-3-3γ增强了IL-8的转录,14-3-3γ和IL-8都能竞争性地结合N蛋白,影响其核分布.
结论:
- 这项研究揭示了14-3-3γ,IL-8和PRRSV N蛋白在调节病毒复制中的复杂相互作用.
- 在蛋白质水平上,IL-8具有针对PRRSV的新型抗病毒功能.
- 针对14-3-3γ-IL-8-N蛋白轴提供了针对PRRSV的潜在治疗策略.
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