揭示了抗体聚合物对准备和分析蛋白A列表表现出的不同结合行为的原因
Wanyuan Dong1, Mengying Tian1, Yifeng Li1
1Downstream Process Development (DSPD), WuXi Biologics, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai, 200131, China.
Protein expression and purification
|February 29, 2024
概括
蛋白质A染色体中的非结合性抗体聚合物可以与分析列结合,膨胀标位测量. 这种结合差异主要是由于准备和分析蛋白A过程之间的负载密度不同.
科学领域:
- 生物制药制造业 生物制药制造业
- 蛋白质染色学 蛋白质染色学
- 分析化学 分析化学
背景情况:
- 抗体/Fc融合生产中的低蛋白A级产量通常与细胞培养收获中的非结合聚合物有关.
- 一个关键的假设是,这些聚合物与分析蛋白A列结合,尽管与制剂列不结合.
研究的目的:
- 确认是否从准备型蛋白质A流通中结合的非结合聚合物与分析蛋白质A列结合.
- 阐明在准备性与分析性蛋白A染色体学中聚合物的差异性结合行为背后的原因.
主要方法:
- 使用了先前的一个案例中的材料,该案例表现出较低的蛋白A产量.
- 研究了聚合物与分析蛋白A高性能液体染色学 (HPLC) 列的结合.
- 分析了负载密度对聚合物结合特性的影响.
主要成果:
- 已证实,在制剂蛋白A流通中的非结合聚合物确实与分析蛋白A列结合.
- 证明负载密度的差异是结合行为的差异的主要原因.
- 显示聚合物与分析列的结合力略强于单体,由较长的保留时间表明.
结论:
- 在准备性染色学中,非结合性聚合物与蛋白A-HPLC列结合,有助于测量培养收获标位.
- 该研究确定了负载密度是导致准备和分析蛋白质A列之间不同的总结结合关系的关键因素.
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