在线原生疏水性相互作用染色学-抗体-药物合物的质谱学
Trevor Kempen1, Lance Cadang1, Yuchen Fan1
1Synthetic Molecule Analytical Chemistry, Genentech Inc., South San Francisco, CA, USA.
mAbs
|December 25, 2024
概括
一种新的在线原生疏水性相互作用色谱-质谱法 (HIC-MS) 方法快速表征抗体-抗体比率 (DAR) 在抗体-药物结合物 (ADC) 中的物种. 这种方法使用了一种新的移动阶段来提高MS的兼容性和灵敏性.
科学领域:
- 生物制药学分析分析
- 分析化学是一种分析化学.
- 染色学和质谱学等.
背景情况:
- 疏水性相互作用色谱 (HIC) 对于分析抗体-药物合物 (ADC) 是必不可少的,特别是用于确定药物对抗体比率 (DAR) 和药物负载分布.
- 由于移动相不兼容,传统的HIC方法与质谱法 (MS) 相结合时面临挑战,导致复杂的仪器仪表,降低分离效率和降低MS灵敏度.
研究的目的:
- 开发一种快速,灵敏和强大的在线原生HIC-MS方法,用于ADC中DAR物种的全面分析.
- 克服现有的HIC-MS合技术的局限性,提高分离和检测能力.
主要方法:
- 实施一个22分钟的在线本地HIC-MS方法.
- 在HIC移动阶段使用酸,一种可热和可热分解的盐,以提高分离和MS兼容性.
- 整合了超短尺寸排除色谱 (SEC) 步骤,用于在线样本清洁和提高MS敏感度.
主要成果:
- 在ADC中成功分离和描述各种DAR物种.
- 证明了HIC移动阶段与MS的兼容性,解决了以前方法的一个关键挑战.
- 通过集成的SEC清洁步骤实现了增强的MS灵敏度.
结论:
- 开发的在线原生HIC-MS方法为ADC中全面的DAR物种概况提供了快速,灵敏和强大的解决方案.
- 该方法采用简单且具有成本效益的仪器设置,使其具有广泛适用性.
- 这种方法显著提高了ADC表征的分析能力.
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