仿真活体减弱寨卡疫苗的免疫学和转录学概况与非人类灵长类动物的保护有关
Ji Ma1, Bert Malengier-Devlies2,3, Babs E Verstrepen4,5
1KU Leuven Department of Microbiology, Immunology & Transplantation, Rega Institute, Division of Virology, Antiviral Drug & Vaccine Research, Laboratory of Molecular Vaccinology & Vaccine Discovery (MVVD), Leuven, Belgium.
Nature communications
|December 13, 2025
概括
YF-ZIK候选疫苗是安全有效的,诱导强烈的免疫反应,并保护子免受寨卡病毒 (ZIKV) 的挑战. 这种活体减弱疫苗对人体试验有希望.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 寨卡病毒 (ZIKV) 构成重大威胁,特别对孕妇,导致严重的先天性缺陷.
- 现有的疫苗缺乏对ZIKV的全面保护.
- 活体减弱疫苗为ZIKV预防提供了一个有希望的策略.
研究的目的:
- 评估仿真活衰减疫苗候选人YF-ZIK的安全性,免疫性和有效性.
- 评估YF-ZIK在非人类灵长类动物中对高剂量ZIKV挑战的保护潜力.
- 为了确定影响疫苗反应的保护和宿主因素的相关性.
主要方法:
- 在 rhesus 和 AG129 老鼠中对 YF-ZIK 的临床前评估.
- 用YF-ZIK进行一次性和辅助性皮下疫苗接种.
- ZIKV实验挑战和病毒载量,血清转化和免疫反应的评估.
- 系统生物学分析以确定宿主反应预测因素.
主要成果:
- YF-ZIK在临床前证明了良好的安全性,并在7-14天内诱导了强大的中和抗体反应,并以第二剂量增强.
- 接种疫苗的在高剂量挑战后表现出灭菌免疫力,没有可检测的病毒RNA或抗ZIKV NS1抗体.
- 被动血清转移受保护的小鼠,确认抗体作为保护的相关物.
- YF-ZIK引起了平衡的Th1/Th2反应和类似于获得许可的YF17D疫苗的转录特征.
结论:
- YF-ZIK是针对寨卡病毒的一种安全且具有免疫性的候选疫苗.
- 该疫苗在非人类灵长类动物模型中提供了强有力的保护,包括消毒免疫力.
- 基于其有前途的临床前数据,对YF-ZIK在人类中的进一步临床评估是有必要的.
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