开发和应用一个无封闭的mRNA平台.
Xiaodi Zheng1, Biao Liu1, Peng Ni2
1College of Bioengineering, National ''111'' Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan, China.
Annals of medicine
|December 9, 2024
概括
一个新的未封闭的mRNA平台为疫苗和蛋白质替代疗法提供了经济和高效的替代方案. 这种平台利用内部核糖体进入部位 (IRES) 和尿素三酸盐 (UTP),成功诱导了针对SARS-CoV-2变种的强效中和抗体.
科学领域:
- 生物技术是生物技术.
- 疫苗学 疫苗学 疫苗学
- 分子生物学分子生物学
背景情况:
- 开发一种新的未封闭的信使RNA (mRNA) 平台.
- 专注于过程简化和经济可行性.
研究的目的:
- 评估未封闭的mRNA结构的转染效率和耐用性in vitro和in vivo.
- 评估幽默和细胞免疫的激活.
- 通过氨酸三酸盐 (UTP) 合成的mRNA结构与N1-methylpseudouridine triphosphate (N1mψTP) 相比较.
主要方法:
- 创建了五个脂纳米粒子 (LNP) 封装的mRNA结构:eGFP,Fluc,SARS-CoV-2尖端蛋白 (SδT),以及两种简单疹病毒2型糖蛋白D变体 (gDED,gDFR).
- 在体外和体内对动物模型中蛋白质表达和免疫反应的评估.
- 使用内部核糖体进入部位 (IRES) 进行独立于帽子的翻译.
主要成果:
- 实现了可量化的蛋白质表达在体外和体内.
- 对封闭的mRNA结构表现出可比的幽默和细胞免疫反应.
- 诱导强效的中和抗体对抗SARS-CoV-2的Delta和Omicron变体与SδT-mRNA-LNP.
- 与基于N1mψTP的结构相比,基于UTP的mRNA结构显示出优异的抗体诱导.
结论:
- 开发的无封闭的mRNA平台 (快速,放大,无封闭和经济,RACE; BH-RACE) 是过程简化和经济的.
- 该平台通过自主开发的包装仪器和LNP传递系统在细胞中实现高效,快速和经济的mRNA表达.
- 在疫苗开发和蛋白质替代疗法中具有潜在的广泛实用性,正如对SARS-CoV-2变种的强烈中和抗体诱导所证明的那样.
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