通过无散射UV/可见光谱仪在脂质纳米颗粒中的RNA的快速和准确量化
Eric C Le Ru1,2, Roland Böttger3, Darren Andrews4
1Marama Labs Limited, 32 Salamanca Road, Wellington, 6012, New Zealand.
Nano letters
|April 8, 2025
概括
在脂质纳米粒子 (LNP) 中量化RNA具有挑战性. 这项研究引入了一种使用集成球来测量无散射吸收光谱的新方法,使得mRNA疫苗能够准确地确定LNP中的RNA度.
科学领域:
- 生物物理化学 生物物理化学
- 纳米技术纳米技术
- 制药科学 制药科学
背景情况:
- 紫外线/可见光谱是RNA量化标准,但由于光散射,对脂质纳米粒子 (LNP) 失败.
- 现有的替代方法,如RiboGreen试验,复制性较差,准确性较低,并且需要大量的样本准备.
- 准确的RNA量化对于mRNA疫苗开发和其他基于LNP的治疗方法至关重要.
研究的目的:
- 开发一种用于在LNP中准确量化RNA的新方法.
- 为了克服LNP配方中光散射的局限性.
- 为了使RNA有效载荷度在LNP研究中的常规表征.
主要方法:
- 利用集成球的设置来测量带RNA的LNP的无散射吸收光谱.
- 开发了一种协议,直接测量来自各种mRNA-LNP配方的RNA光谱.
- 基于无散射吸收光谱计算的总RNA度.
主要成果:
- 提出的方法表现出极好的线性和精度 (约1.5%).
- 在不同的mRNA-LNP配方中,估计精度约为5%.
- 成功实现了对LNP中的RNA度的直接测量,克服了分散问题.
结论:
- 集成球法提供了一种可靠和准确的方法来量化LNP中的RNA.
- 这种技术解决了LNP配方研发中的一个重大挑战.
- 促进RNA有效载荷的常规表征,这对于mRNA疫苗和治疗进展至关重要.
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