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药学学报  2014 

一种抗体药物偶联物中药物抗体偶联比的测定

, PP. 363-367

Keywords: 抗体药物偶联物,药物抗体偶联比,液质联用

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Abstract:

用两种方法即液质联用和紫外分光光度法对一种抗体药物偶联物的药物抗体偶联比进行测定,为科学评价和有效控制药物抗体偶联比提供可靠方法。采用c4色谱柱及联用的质谱对去糖基化样品进行分析,根据偶联不同数目药物分子的质量数增加判断偶联数目;采用紫外分光光度计在252及280nm处进行吸收度测量,根据抗体和药物在不同波长处的吸收系数不同,由二元一次方程求导出药物抗体偶联比。两种方法测得的药物抗体偶联比分别为3.21及3.25,结果相似,都可用于此种抗体药物偶联物的药物抗体偶联比分析。

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