一个稳定的MERS-CoV尖峰费里纳米颗粒疫苗引起了强大的和保护性的中和抗体反应
Abigail E Powell1, Hannah Caruso2, Soyoon Park2
1Vaccine Company, Inc., South San Francisco, CA, USA. apowell@vax.co.
Nature communications
|February 5, 2026
概括
一种新型纳米粒子疫苗候选人对中东呼吸综合征冠状病毒 (MERS-CoV) 预防有希望. 在小鼠和非人类灵长类动物的临床前研究表明,强大的免疫反应和对MERS-CoV感染的保护.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 疫苗开发 疫苗开发
背景情况:
- 2012年发现的中东呼吸系统综合征冠状病毒 (MERS-CoV) 构成了严重的公共卫生威胁,病例死亡率高 (>30%) 和大流行潜力.
- 尽管存在风险,但目前还没有针对MERS-CoV的安全有效疫苗.
研究的目的:
- 设计,描述和评估一个新的MERS-CoV纳米粒子疫苗候选人,以获得临床前的有效性.
- 在各种动物模型中评估MERS-CoV疫苗的免疫性和保护能力.
主要方法:
- 在自组装费里纳米粒子上显示的稳定MERS-CoV尖峰抗原的开发.
- 在BALB/c小鼠和非人类灵长类动物 (NHPs) 中评估疫苗免疫性,包括抗体中和测定和交叉反应性评估.
- 通过人类DPP4转基因小鼠和阿尔帕卡挑战模型对MERS-CoV致命挑战的疫苗疗效评估.
主要成果:
- 这种纳米粒子候选疫苗在小鼠和NHP中引起了强大的MERS-CoV中和抗体标位,与不同的MERS-CoV类和相关的merbecovirus交叉反应.
- 免疫接种在人类DPP4转基因小鼠中提供了对MERS-CoV致命挑战的剂量依赖性保护.
- 在使用候选疫苗的阿尔帕卡中观察到对MERS-CoV感染的完全保护.
结论:
- MERS-CoV纳米粒子疫苗是临床开发的一个有希望的候选人.
- 这种疫苗可以为有风险的人群提供保护,并在潜在的疫情情情景中发挥关键作用.
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