使用微流体毛细管区电泳,对完整的单克隆抗体参考标准进行充电变异分析
Noah Gould1, Kendall Johnson1, Anne-Lise Marie1
1Barnett Institute of Chemical and Biological Analysis and Department of Chemistry & Chemical Biology, Northeastern University, Boston, MA, USA.
Journal of pharmaceutical and biomedical analysis
|December 11, 2025
概括
一种新的微流体毛细管区电泳喷射电离-质谱法 (CZE-ESI-MS) 方法有效地表征单克隆抗体 (mAbs) 和它们的蛋白形状. 该技术为生物治疗开发的质量保证提供了快速,灵敏的分析.
科学领域:
- 生物制药学分析
- 分析化学 分析化学
- 质谱测量质量谱测量
背景情况:
- 单克隆抗体 (mAbs) 是重要的生物治疗药物,市场需求日益增长.
- 越来越复杂的mAbs需要先进的分析技术进行质量控制.
- 可靠的参考标准对于验证mAb特性方法至关重要.
研究的目的:
- 开发和优化微流体CZE-ESI-MS方法,用于完整的mAb特性.
- 为了使 mAb 蛋白质形式的高通量分析能够在最小的样本准备过程中进行.
- 在生物制药开发中建立一个强大的mAb质量保证方法.
主要方法:
- 开发和优化微流体毛细管区电泳喷射电离-质谱法 (CZE-ESI-MS) 方法.
- 利用高质量范围的MS数据采集进行完整的mAb分析.
- 在接近本地条件下分析了三个完整的mAb参考标准.
主要成果:
- 在15分钟以内用图形图样样本量对完整的mAbs及其蛋白形状进行了表征.
- 量化高丰度的修饰,如C端素剪切 (>95%) 和N链 glycosylation (>99%).
- 检测到低丰度的修饰,包括除化 (~3-7%) 和N-糖甘化 (<1.5%).
结论:
- 开发的CZE-ESI-MS方法提供了完整的mAbs.的高效和可重现的表征.
- 这种技术适用于工业生物制药质量保证和开发.
- 该方法支持准确评估mAb的安全性,功效和稳定性.
更多相关视频
10:50Purification and Analytics of a Monoclonal Antibody from Chinese Hamster Ovary Cells Using an Automated Microbioreactor System
Published on: May 1, 2019
15.2K
06:37Using Reference Reagents to Confirm Robustness of Cytokine Release Assays for the Prediction of Monoclonal Antibody Safety
Published on: September 15, 2023
1.0K
相关概念视频
Capillary Electrophoresis: Applications
1.1K
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
1.1K
Capillary Electrophoresis: Instrumentation
878
Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
878
