在基于尺寸的电泳中通过CZE-MS生成的光谱库快速识别抗体杂质
Quan Liu1, Jiaying Hong1, Yukun Zhang1
1CMP Scientific Corp, 760 Parkside Ave, STE 211, Brooklyn, NY, 11226, USA.
Scientific reports
|August 30, 2024
概括
准确的杂质识别在抗体生产中至关重要. 这项研究将基于尺寸的快速电泳与毛细管区电泳质谱 (CZE-MS) 结合起来,以可靠地检测和表征杂质.
科学领域:
- 生物制药学分析
- 分析化学 分析化学
- 蛋白质化学 蛋白质化学
背景情况:
- 确保生物制药产品质量需要可靠的杂质检测.
- 现有的基于尺寸的电泳方法在准确的杂质峰值识别方面存在困难.
- 质谱与电泳相结合,为增强杂质分析提供了潜力.
研究的目的:
- 开发和验证一种联合电泳法,用于在抗体生产中检测和识别敏感杂质.
- 为了解决当前方法在准确表征杂质峰值方面的技术限制.
- 建立一个强大的策略,以评估在各种压力条件下的抗体稳定性.
主要方法:
- 利用硫化加速降解方法产生已知的抗体降解产品用于尺寸校准.
- 采用LabChip GXII通道电泳,以快速,基于尺寸的杂质峰值检测 (<1分钟).
- 应用毛细管区电泳质谱法 (CZE-MS) 用于准确识别检测到的杂质峰值.
- 模拟了细胞培养收获条件和强制降解,使用甲素和高pH/温度处理.
主要成果:
- 证明了将基于尺寸的电泳与CZE-MS用于杂质分析的可行性.
- 成功生成了一个CZE-MS光谱库,用于在高通量大小基电泳中明确的峰值赋值.
- 能够准确识别或确定抗体杂质的质量.
- 在模拟收获和强制降解条件下评估了抗体稳定性和杂质概况.
结论:
- 集成的CZE-MS和基于大小的电泳策略可靠地检测和识别抗体生产中的杂质.
- 这种方法克服了基于大小的方法的局限性,通过提供明确的杂质特征.
- 开发的方法广泛适用于抗体的发现和开发,提高产品的安全性和质量.
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