Determination of the purity of trastuzumab containing polyethylene glycol by capillary electrophoresis

Number of views: 11
  • 分享到:

摘要:

在抗体制剂中,处方中的聚乙二醇(PEG)会影响利用十二烷基硫酸钠毛细管电泳技术(CE-SDS)对蛋白进行纯度检测.当使用CE-SDS技术分析处方辅料中含有聚乙二醇8000(PEG8000)的曲妥珠单抗时,电泳谱图中的主峰后会出现由此分析方法造成的伪高分子量峰(伪HMW峰),对峰面积法计算蛋白纯度造成干扰.针对含质量分数为2%~7%PEG8000的曲妥珠单抗,尝试采用样品溶液替换、提高样品溶液制备时的变性孵育温度和在样品溶液中添加尿素的方式消除该伪HMW峰.结果表明,以下3种条件可用于消除由2%~7%PEG8000造成的伪HMW峰:提升样品溶液制备时的变性孵育温度至80℃;提升样品溶液制备时的变性孵育温度至70℃并在样品溶液中加入2mol/L尿素;提升样品溶液制备时的变性孵育温度至60℃并在样品溶液中加入4mol/L尿素.该研究拓展了毛细管电泳技术在单克隆抗体产品纯度分析的应用,并为其他抗体药物的纯度分析方法提供了参考.

While polyethylene glycol is a commonly used additive in antibody drug formulations,it can interfere the purity test of proteins using sodium dodecyl sulfate capillary electrophoresis(CE-SDS).When testing a model monoclonal antibody,trastuzumab,that contains polyethylene glycol 8000(PEG8000)as an excipient in the formulation,a pseudo high molecular weight peak appears after the main peak,consequently disturbing the purity analysis by peak area integration method.In this study,different approaches were explored to eliminate the pseudo HMW peak in trastuzumab sample with mass fraction of PEG from 2%to 7%,including exchanging sample solution,increasing the incubation temperature,and adding urea.The results show that the following three conditions can be applied to eliminate the pseudo HMW peak in the presence of 2%-7%PEG8000:raising the denaturing incubation temperature to 80℃;raising the denaturing incubation temperature to 70℃and adding 2 mol/L urea;and raising the denaturing incubation temperature to 60℃and adding 4 mol/L urea.This study expands the application of capillary electrophoresis in the field of antibody drug analysis.

作者:

麻旭 屈晨 田橙 武涛 丁晓娜 李志国 曹晓林 黄岗 狄斌

Ma Xu;Qu Chen;Tian Cheng;Wu Tao;Ding Xiaona;Li Zhiguo;Cao Xiaolin;Huang Gang;Di Bin(Department of Pharmacy,China Pharmaceutical University,Nanjing 211198,China;Analytical Sciences,Wuxi Biologics(Shanghai)Co.,Ltd.,Shanghai 200131,China)

机构地区:

中国药科大学药学院 上海药明生物技术有限公司分析科学部

出处:

《betway官方app 学报:自然科学版》 CAS 北大核心 2021年第3期72-77,共6页

基金:

国家自然科学基金(81773693)。

关键词:

毛细管电泳 抗体 聚乙二醇 纯度

capillary electrophoresis antibody PEG purity

分类号:

R917 [医药卫生—药物分析学]


毛细管电泳法检测含聚乙二醇的曲妥珠单抗的纯度.pdf


Baidu
map