使用基于平台的质谱检测的mRNA疫苗的功能和翻译忠实性表征
Alyssa Q Stiving1, Benjamin W Roose2, Christopher Tubbs2
1Analytical Research & Development, Merck & Co., Inc, 126 E Lincoln Ave., Rahway, NJ, USA. alyssa.stiving@merck.com.
NPJ vaccines
|February 23, 2025
概括
一种新的无细胞翻译和质谱法准确地检测和量化mRNA编码的蛋白质. 这个平台识别了非目标框架转移,并评估了mRNA疫苗的质量.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 疫苗开发 疫苗开发
背景情况:
- 使者RNA (mRNA) 疗法和疫苗提供快速开发和可扩展性.
- 修改后的核糖核酸,如N1methylpseudouridine,可以改善mRNA的稳定性并降低免疫性.
- 然而,N1M-甲基伪尿氨酸可以诱导免疫反应对意外的,框架移动的蛋白质.
研究的目的:
- 开发和验证一种用于检测,表征和量化由mRNA结构产生的蛋白质的新平台.
- 在各种条件下评估mRNA功能,包括热应力和复杂配方.
- 为了研究与修饰的mRNA相关联的核糖体框架转移现象.
主要方法:
- 开发一种工作流程,将无细胞翻译 (CFT) 与液体染色学-并联质谱法 (LC-MS) 结合起来.
- 应用CFT-MS方法来评估在热应力下和多价值配方中的mRNA性能.
- 使用基于细胞翻译的六价mRNA药物产品对MS方法的验证.
主要成果:
- 该CFT-MS平台准确地检测,表征和量化了来自mRNA的抗原蛋白.
- 该方法在识别六种翻译蛋白及其相对丰度方面表现出高灵敏度和特异性.
- 通过CFT-MS方法,成功地确定了与N1-methylpseudouridylation相关的+1核糖体框架转移.
结论:
- 开发的CFT-MS方法是评估mRNA质量和功能的一种有价值的分析工具.
- 该平台有助于严格评估基于mRNA的疗法和疫苗.
- 这些发现有助于理解和减轻mRNA技术中的非目标效应.
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