全基因组的子重编程使多因子减弱的流感疫苗具有广泛的交叉保护
Yang Wang1,2,3, Tianxin Ma1, Yujiao He4,5
1State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510370, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 30, 2025
概括
科学家们使用全基因组编码子重编程开发了一种新的活体减弱型流感疫苗 (LAIV). 这种安全有效的疫苗提供了对流感A病毒菌株的广泛保护.
科学领域:
- 病毒学 病毒学
- 疫苗学 疫苗学 疫苗学
- 分子生物学分子生物学
背景情况:
- 活体减弱型流感疫苗 (LAIV) 提供广泛的免疫力,但具有有限的合理减弱策略.
- 开发更安全,更有效的LAIV对于预防流感至关重要.
研究的目的:
- 建立全基因组编码子重编程作为开发安全和广泛保护LAIV的多功能平台.
- 调查小说LAIV诱导的衰减和保护性免疫机制.
主要方法:
- 产生PR8rp,一种流感A型病毒,具有重编程的同义编码子和高CpG含量.
- 在小鼠中对PR8rp衰减和免疫性进行体外和体内评估.
- 在接种疫苗后分析免疫反应,包括中和抗体和T细胞反应.
主要成果:
- 在小鼠中,PR8rp表现出严重的衰减和显著减少的毒性,同时保持了疫苗产量.
- 单次鼻内注射剂量给予了对异种和异种亚型流感菌株的灭菌同源保护和交叉保护.
- 减弱机制包括缺陷的NA基因组包装,减少NS1蛋白积累,增强宿主抗病毒反应,增加对指抗病毒蛋白限制的敏感性.
结论:
- 全基因组编码子重编程是一种可行的策略,可以为疫苗开发创造稳定,减弱的流感病毒.
- 这种方法产生了具有多个衰减机制的LAIV,确保了安全性和广泛的保护性免疫力.
- 开发的LAIV平台显示了针对不同菌株的下一代流感疫苗产生潜力.
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