实验设计在重组人生长激素-Fc融合蛋白纯化工艺建立过程中的应用  

Application of Design of Experiment in development of purification process of recombinant human growth hormone-Fc fusion protein

作　　者：毕江坤 俞露 张宇 张五妮 李利 刘涵 BI Jiangkun;YU Lu;ZHANG Yu;ZHANG Wuni;LI Li;LIU Han(Department of Cytokines,Changchun Institute of Biological Products Co.Ltd.,Changchun 130012,Jilin Province,China)

机构地区：[1]长春生物制品研究所有限责任公司细胞因子室,吉林长春130012

出　　处：《中国生物制品学杂志》2023年第3期336-340,共5页Chinese Journal of Biologicals

基　　金：吉林省软科学研究计划(20160204034YY)。

摘　　要：目的 通过实验设计(Design of Experiment,DOE)对重组人生长激素-Fc(recombinant human growth hormone-Fc,rhGH-Fc)融合蛋白纯化工艺中阴离子交换层析的层析条件进行优化,以降低蛋白原液中宿主蛋白(host cell protein,HCP)含量。方法 利用Minitab 19中DOE功能创建4因子2水平完全析因实验设计,通过DOE对rhGH-Fc纯化工艺中离子交换层析条件(流速、上样量、缓冲液pH、洗脱液盐浓度)进行优化,找出操作空间。结果 建立的DOE模型能准确预测实验结果,其中上样量、缓冲液pH、洗脱盐浓度以及缓冲液pH与洗脱液盐浓度的交互效应对收获液中HCP含量有显著影响。获得的最佳层析条件为:上样量15 mg/mL,流速120 cm/h,洗脱液pH 7.0~8.0,洗脱液盐浓度0.1 mol/L。该层析条件下洗脱液中HCP含量均<400 ng/mg,在确定操作空间的结果范围内满足验证要求。结论 本实验成功应用DOE确定了阴离子交换层析去除HCP的最佳层析条件,为其在生物制药领域的更多应用提供了参考。ObjectiveTo optimize the condition for anion exchange chromatography in purification process of recombinant human growth hormone-Fc(rhGH-Fc)fusion protein by Design of Experiment(DOE)so as to decrease the content of host cell protein(HCP)in bulk of protein.MethodsA complete factorial experimental design with four factors at two levels was established by the DOE in Minitab 19 software.The condition(flow rate,sample load,pH value of buffer and salt concentration of eluent)for anion exchange chromatography in purification process of rhGH-Fc was optimized by DOE to find out the operating space.ResultsThe experimental results were predicted accurately by the established DOE model.The sample load,pH value of buffer,salt concentration of eluent as well as the interaction of pH value of buffer and salt concentration of eluent showed significant influence on the HCP content in the harvest.The optimal sample load,flow rate as well as pH value and salt concentration of eluent were 15 mg/mL,120 cm/h,7.0 ~ 8.0 and 0.1 mol/L respectively.The HCP contents in eluents under the optimal condition were less than 400 ng/mg,which met the requirements for verification within the range of results in determined operating space.ConclusionThe condition for removal of HCP by anion exchange chromatography was successfully optimized by DOE,which provided a reference for further application of DOE in the biopharmaceutical field.

关 键 词：实验设计 重组人生长激素-Fc 宿主蛋白 纯化 

分 类 号：R977.1[医药卫生—药品]