水友相互作用色谱HRMS与烯胺单立柱:完整的抗体糖形式特征的新方法
Annika A M van der Zon1,2, LoÏs N Hana1,2, Huda Husein1,2
1van 't Hoff Institute for Molecular Sciences, Analytical Chemistry Group, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, the Netherlands.
Analytical chemistry
|June 16, 2025
概括
这项研究开发了一种新的HILIC-MS方法,使用烯胺单体进行完整的单克隆抗体 (mAb) 糖分. 该方法增强了葡萄糖形式的分离,并检测出低丰度的葡萄糖形式,改善了生物治疗特征.
科学领域:
- 生物化学 生物化学
- 分析化学 分析化学
- 生物制药学分析
背景情况:
- 糖化对单克隆抗体 (mAb) 药理动力学和疗效至关重要.
- 完整的抗体分析对于理解糖形状的概况至关重要.
- 目前的RPLC-MS方法缺乏选择性来解决低丰度的甘油形式.
研究的目的:
- 开发和优化水友交互液态染色学与质谱法 (HILIC-MS) 方法相结合,用于完整的mAb糖分.
- 为了研究素组成对HILIC-MS.的烯胺单体性能的影响.
- 评估开发的HILIC-MS方法的糖形分离能力和灵敏度.
主要方法:
- 开发用于HILIC柱的烯胺单体.
- 优化素组成 (醇和DMSO比率) 用于单质合成.
- 应用HILIC-MS方法来分析五个基准完整的mAbs (IgG1和IgG4).
主要成果:
- 优化的HILIC-MS方法在完整的蛋白质水平上表现出高的葡萄糖形式选择性.
- 在单一和双重Fc糖化之间实现了基线分离 (例如,Trastuzumab G0F与G0F/G0F,Rs=3.62).
- 由一个甘氨基单元差异的甘氨基形式的部分分离得到实现 (例如,Trastuzumab G0F/G0F与G0F/G1F,Rs=1.06).
- 该方法能够检测出低丰度的甘油形式 (例如,单个G0F,M5/M5),其性能优于RPLC-MS.
结论:
- 基于烯胺单体的HILIC-MS是一种强大的工具,用于完整的mAb糖谱.
- 这种方法为表征IgG异质性提供了更高的选择性和灵敏性.
- 开发的方法在生物制药开发中具有重要的生物分析应用潜力.
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