了解Good HEPES脂质的结构活动关系,用于脂质纳米粒子mRNA疫苗的应用
Rebecca L Goldman1, Namratha Turuvekere Vittala Murthy2, Trent P Northen1
1mRNA Center of Excellence, Sanofi, Waltham, MA, USA.
Biomaterials
|July 22, 2023
概括
基于皮佩拉核心的新型电离性脂质增强了用于疫苗的信使核糖核酸 (mRNA) 输送. 这些新的脂质纳米颗粒 (LNP) 在产生功能性抗体方面显示出与现有标准相当的疗效.
科学领域:
- 生物技术是生物技术.
- 疫苗开发 疫苗开发
- 药物输送系统 药物输送系统
背景情况:
- 脂质纳米颗粒 (LNP) 对于为疫苗提供信使核糖核酸 (mRNA) 至关重要.
- 电离性脂质成分显著影响LNP的功效和耐受性.
研究的目的:
- 开发和描述一种用于mRNA输送的新型电离性脂质家族.
- 研究这些脂质的结构-活性关系,以改善蛋白质表达和疫苗疗效.
主要方法:
- 新型电离性脂质的合成,具有皮佩拉津核心,不对称的尾巴和可降解的部分.
- 对蛋白质表达的脂质结构变异 (尾巴长度,不和,分支,基) 的评估.
- 使用冷传输电子显微镜 (Cryo-TEM) 对LNP物理性质的表征.
- 在非人类灵长类动物中评估疫苗的疗效,使用编码流感血凝素 (HA) 的mRNA.
主要成果:
- 确定了关键的结构-活性关系,包括最佳的尾巴长度 (12碳) 和二硫化物臂间距,以提高蛋白质的生产.
- 观察到LNP物理特征,脂质双层包装和体内蛋白质表达之间的相关性.
- 证明与HA mRNA配制的Good HEPES LNP引起了功能HA抑制 (HAI) 抗体标位,与非人类灵长类动物的MC3和SM-102 LNP相比.
结论:
- 基于皮佩拉的新型电离性脂质代表了开发mRNA疫苗的有希望的新材料类.
- 这些脂质具有可调节的特性,可以优化LNP配方并增强疫苗的效力.
- 开发的LNP显示出潜在的作为有效的疫苗候选人,以对抗流感等传染病.
相关概念视频
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