在小鼠中,冷化麻的mRNA脂质纳米粒子疫苗具有长期稳定性和强大的免疫反应
Bin Wang1, Quanyi Yin1, Li Yi1
1Department of Research & Development, Yither Biotech Co Ltd, Shanghai, China.
Human vaccines & immunotherapeutics
|March 11, 2025
概括
一个新的冷化工艺使Mopox mRNA-LNP疫苗在4°C下至少稳定12个月. 这种可扩展的方法提高了疫苗的可访问性,这对于控制全球 (Mpox) 疫情至关重要.
科学领域:
- 疫苗学 疫苗学 疫苗学
- 生物技术是生物技术.
- 制药科学 制药科学
背景情况:
- 世界卫生组织宣布全球卫生紧急情况,原因是麻疹 (Mpox) 迅速蔓延.
- 现有的疫苗配方在获取和储存方面存在挑战,特别是在资源有限的环境中.
- 迫切需要稳定,可扩展和负担得起的候选疫苗来应对Mpox疫情.
研究的目的:
- 开发和优化一个冷化过程,用于 (Mpox) 传递 RNA-脂质纳米粒子 (mRNA-LNP) 疫苗候选人.
- 确保开发的疫苗配方和冷干燥过程参数产生稳定,有效和可扩展的产品.
- 提高全球Mpox疫苗的可用性,特别是在发展中国家.
主要方法:
- 疫苗配方的全面评估和优化,包括冷保护剂,缓冲系统,mRNA度和复制溶剂.
- 优化冷干燥参数,如冷方法,温度,冷却速度和初级/二级干燥条件.
- 评估溶解产品的颗粒大小,多分散性指数,封装效率,mRNA完整性和水分含量.
主要成果:
- 解冷化过程产生了一种冷干燥的Mpox mRNA-LNP疫苗,外观均,含水量低于1%.
- 与新鲜疫苗相比,复制的冷化疫苗显示了相当的颗粒特性,封装效率和mRNA完整性.
- 该过程是可扩展的 (增加100倍,达到2000瓶/批),冷化疫苗在4°C时显示12个月的稳定性,在复制后在环境温度下显示8小时的稳定性.
- 在体外和体内研究证实了与新鲜疫苗相比的可比生物活性和免疫性.
结论:
- 软化为稳定Mpox mRNA-LNP疫苗提供了一种有效的策略,显著提高了储存和处理能力.
- 开发的可扩展的冷化过程提高了疫苗的可访问性,特别是在有限的冷链基础设施的地区.
- 这种方法对于全球努力制正在进行的 (Mpox) 疫情和未来的疫情至关重要.
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