酸盐缓冲对mRNA-LNP的影响:探索超出一般关键质量属性的因素
Burcu Binici1, Ankita Borah1, Julie A Watts2
1Strathclyde Institute of Pharmacy and Biomedical Sciences, 161 Cathedral St, University of Strathclyde, Glasgow, Scotland, G4 0RE, UK.
International journal of pharmaceutics
|November 13, 2024
概括
酸盐缓冲度会影响mRNA-LNP转染. 较高的度降低了细胞吸收和体内表达,即使粒子大小和封装效率保持一致.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 药物运输 药物运输 药物运输
背景情况:
- 脂质纳米颗粒 (LNP) 对于mRNA疫苗和治疗性输送至关重要.
- LNP的特性取决于脂质和制造条件,如缓冲度.
研究的目的:
- 研究酸盐缓冲对mRNA-LNP制备和性能的影响.
- 确定缓冲度是否影响LNP关键质量属性 (CQAs) 和生物活性.
主要方法:
- 使用50毫米,100毫米或300毫米的酸盐缓冲器准备的SM-102 LNP与火虫光酶mRNA.
- 分析的粒子大小 (z-平均值,模式,D10,D50,D90),多分散度指数 (PDI) 和封装效率.
- 在实验室中评估细胞内化和转染效率,并在小鼠体内表达.
主要成果:
- 酸盐缓冲度没有显著改变平均颗粒大小或PDI.
- 在所有测试的度中,封装效率仍然很高.
- 较高的酸盐度 (300mM) 减少了细胞内化和体外转染.
- 与50毫米和100毫米相比,用300毫米酸盐缓冲剂制备的LNP在体内表达水平较低.
结论:
- 酸盐缓冲度是mRNA-LNP生产中的关键参数,影响生物活性.
- 像粒子大小一样的标准CQAs可能无法捕捉影响LNP功能的微妙配方依赖的变化.
- 优化缓冲条件对于提高mRNA-LNP疗效至关重要.
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