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    • 7. 发明公开
    • METHOD FOR DETECTING SAMPLE GLYCOSYLATION AND TERMINAL MODIFICATION STATES DURING PROTEIN PURIFICATION PROCESS
    • 方法检测样品和终端的糖基化修饰条件期间的蛋白质纯化方法
    • EP2947454A4
    • 2016-08-03
    • EP13871613
    • 2013-04-24
    • LIVZON MABPHARM INC
    • ZHU BAOGUOPENG YUCAIYANG JIAMING
    • G01N30/02G01N33/68
    • G01N33/6848G01N30/06G01N30/7233G01N33/6854G01N2030/027G01N2030/065G01N2030/067G01N2030/8831G01N2440/38G01N2560/00Y10T436/24
    • The present invention provides a method for determining glycosylation and terminal modifications of immunoglobulin during immunoglobulin purification process, which can simultaneously and rapidly determine glycosylation, N-terminal pyroglutamination and C-terminal de-lysination of immunoglobulin. The method comprises: 1) separating immunoglobulin by using cation-exchange resin, and collecting different components in according to retention time; 2) denaturing the components of immunoglobulin obtained in step 1) with a denaturant, followed by reducing them with a reducing agent, to separate the light chain and heavy chain; 3) separating the light chain and heavy chain of immunoglobulin of step 2) by using reverse phase ultrahigh pressure liquid chromatography; 4) measuring the molecular weights of the light chain and heavy chain obtained in step 3) with mass spectrum; 5) analyzing the chromatographic data obtained in step 3) and the mass spectrometric data obtained in step 4) to determine glycosylation and terminal modifications of said immunoglobulin.
    • 本发明提供了用于确定性采矿糖基化和期间的免疫球蛋白纯化过程免疫球蛋白的末端修饰的方法,该免疫球蛋白可以同时和快速确定性矿糖基化,N-末端和C-末端pyroglutamination脱lysination。 该方法包括:1)通过使用阳离子交换树脂,并收集在雅丁保留时间不同组分中分离免疫球蛋白; 2)免疫球蛋白变性的步骤1中获得)与变性剂,随后通过降低它们与还原剂,对轻链和重链的分离部件; 3)通过使用反相超高压液相色谱分离步骤2)的免疫球蛋白的轻链和重链; 4)测量在轻链和与质谱步骤3)中得到的重链的分子量; 5)分析)在步骤3中获得的色谱数据和质谱数据在步骤4中获得的),以确定的糖基化矿和所述免疫球蛋白的末端修饰。