在子单位级别对单克隆抗体变异的多属性分析的CE-MS和CE-MS/MS
Jasmin Schairer1, Jennifer Römer2, Christian Neusüß3
1Faculty of Chemistry, Aalen University, Beethovenstraße 1, Aalen 73430, Germany; Faculty of Science, University of Tübingen, Auf der Morgenstelle 8, Tübingen 72076, Germany.
Journal of pharmaceutical and biomedical analysis
|October 5, 2024
概括
一种新的毛细电泳法与质谱学相结合,为分析单克隆抗体 (mAbs) 中多个变异提供了快速和通用的方法. 这种多属性方法简化了生物制药质量控制,通过高效地表征各种mAb蛋白形状.
科学领域:
- 生物制药品质量控制 生物药品质量控制
- 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) 需要严格的质量控制来确保有效性和安全性.
- 由于变异对生物活性的影响,分析mAbs中的产品相关物质和杂质至关重要.
- 现有的mAb变异分析方法通常是特定的,耗时的,或需要专门的设备.
研究的目的:
- 开发一种通用的毛细电泳法,用于全面的mAb变异分析.
- 为了将毛细管电泳与质谱学结合起来,以对mAbs.进行子单位级别的表征.
- 为生物制药品质量控制建立一个快速有效的多属性方法.
主要方法:
- 一个中性涂层的毛细电泳系统与使用nanoCEasy接口的质谱相结合.
- 单克隆抗体被酶消化并减少以分析子单位水平的变异.
- 该方法使用1mAb进行了验证,随后在9个额外的IgG1抗体上进行了测试.
主要成果:
- 该方法成功地分离了各种mAb变体,包括大小变体 (例如,糖化),电荷变体 (例如,C端 lysin剪切) 和其他蛋白质形式 (例如,糖化).
- 质谱法/质谱法 (MS/MS) 碎片化证实了分离的变体,即使是那些具有微小质量偏差的变体,如除化或开放的二硫化物桥梁.
- 该通用系统在多种IgG1抗体中表现出广泛的适用性,表明其多功能性.
结论:
- 提出的多属性方法提供了一种快速,详细和通用的方法来表征广泛的mAb变体.
- 这种方法需要最小的样品准备,并使用相对简单的分离设备.
- 开发的系统通过实现高效和全面的mAb分析来增强生物制药质量控制.
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