用纳米孔直接RNA测序评估细胞和基因治疗应用的mRNA和sgRNA质量
Kamalakar Chatla1, Brian Roper1, Luladey Ayalew1
1Cell Therapy Engineering and Development, Genentech, 1 DNA Way, South San Francisco, California 94080, United States.
Analytical chemistry
|March 6, 2026
概括
纳米孔直接RNA测序 (NDRS) 为表征RNA治疗提供了一个统一的平台. 该方法准确评估关键质量属性,如序列,完整性和封闭性,确保RNA药物的安全性和有效性.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 分析化学 分析化学
背景情况:
- 开发RNA疗法需要精确地描述关键质量属性 (CQA).
- 纳米孔直接RNA测序 (NDRS) 为RNA序列和结构提供单分子分析.
- 监管期望需要对RNACQA进行强有力的分析方法.
研究的目的:
- 建立NDRS作为RNA治疗的全面,多属性分析平台.
- 开发新的策略,以评估mRNA和单指导RNA (sgRNA) 的关键CQA在单个试验中.
- 验证NDRS性能与已建立的直角技术相比.
主要方法:
- 优化了NDRS工作流程,用于全长mRNA测序和完整性评估.
- 开发了一种基于测序的方法来量化5'限制效率.
- 包含一个5'RNA形适配器,用于全长sgRNA测序.
- 进行了对poly (A) 尾巴长度和完整性的定量分析.
主要成果:
- NDRS准确地确定了全长mRNA序列和转录完整性.
- 直接从原生RNA分子中量化5'限制效率.
- 实现了100个核酸sgRNA分子的全长测序,用于身份验证.
- 对于多个尾的长度,完整性和封顶效率的定量结果与直角方法相关联.
- 证明mRNA降解对CRISPR-Cas9编辑效率的功能影响.
结论:
- NDRS是一种通用,统一的分析平台,用于全面的mRNA和sgRNA表征.
- 该平台支持RNA治疗开发中的质量保证,可比性和控制.
- NDRS有助于制造下一代RNA疗法.
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