全面的mRNA杂质分析:评估当前技术和先进的分析技术
Julien Camperi1, Steffen Lippold2, Luladey Ayalew1
1Cell Therapy Engineering and Development, Genentech, 1 DNA Way, South San Francisco, California 94080, United States.
Analytical chemistry
|February 20, 2024
概括
本研究详细介绍了在体外转录的信使RNA (mRNA) 中分析杂质的方法,确定了诸如多种多种A尾长和双链RNA副产品等常见问题,以提高治疗质量.
科学领域:
- 生物技术和制药分析
- 分子生物学和核酸化学分子生物学和核酸化学
背景情况:
- 对于开发基于mRNA的疗法和疫苗而言,mRNA的体外转录 (IVT) 是至关重要的.
- IVT mRNA中的杂质可能会损害这些关键生物制药的安全性和有效性.
- 缺乏对mRNA杂质的详细结构特征.
研究的目的:
- 通过使用综合分析技术,开创IVTmRNA的综合杂质分析.
- 开发和验证可靠的分析方法来评估mRNA纯度和完整性.
- 为了识别和描述商业来源的IVT mRNA中常见的杂质.
主要方法:
- 发展离子对逆相液态色谱和毛细血管凝电泳方法,用于mRNA纯度的确定.
- 微毛细管电泳的应用用于高通量mRNA杂质分析 (<1.5分钟/样本).
- 利用质量光度和原生质量谱度进行mRNA及其杂质的详细表征.
主要成果:
- 识别的杂质主要是mRNA变体,其尾巴长度改变了多元A,以及双链mRNA (dsRNA) 副产品,包括dsRNA 3'-循环回归形式.
- 质光计准确确定核酸计数并检测出尺寸变异 (聚合物,多A尾部缺失/偏差),证实mRNA的身份和完整性.
- 原生质谱学提供了关于完整的mRNA质量,异质性和多样性 (A) 尾部特征的见解.
结论:
- 这项研究为全面的IVT mRNA杂质分析建立了先进的分析方法.
- 这些发现突出了关键的杂质,并为完善mRNA生产过程提供了基础.
- 这项工作有助于提高mRNA疗法和疫苗的质量和可靠性.
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