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A rapid method for simultaneous evaluation of free light chain content and aggregate content in culture media of Chinese hamster ovary cells expressing monoclonal antibodies for cell line screening

机译:同时评估表达单克隆抗体的中国仓鼠卵巢细胞培养基中游离轻链含量和聚集体含量的快速方法,用于细胞系筛选

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摘要

The goal of developing a monoclonal antibody (mAb) production process is high productivity and high quality. Because the productivity and quality of mAbs depend on cell line properties, the selection of cell lines suitable for large-scale production is an important stage in process development for mAb production. The light chain (LC) is important for antibody folding and assembly in the endoplasmic reticulum; cell lines that secrete a large amount of LCs in the medium secrete high-quality antibodies with high productivity. LC contents in culture media have been estimated by western blotting, reverse-phase high-performance liquid chromatography, and enzyme-linked immunosorbent assay. However, these analyses require fine tuning of experimental conditions for each antibody analyzed. Here we report a rapid and simple high-sensitivity size-exclusion chromatography (HS-SEC) method to evaluate the contents of low-molecular weight species (LMWS, mainly consisting of LC monomers and dimers) and high-molecular weight species (HMWS, aggregates) in the media for cell line screening. Because LMWS and HMWS are important indicators of productivity and quality, respectively, for cell line screening, HS-SEC will be useful in the first step of cell line selection needed for large-scale production. (C) 2015, The Society for Biotechnology, Japan. All rights reserved.
机译:开发单克隆抗体(mAb)生产过程的目标是高生产率和高质量。由于mAb的生产率和质量取决于细胞系特性,因此选择适合大规模生产的细胞系是mAb生产过程开发中的重要阶段。轻链(LC)对于内质网中的抗体折叠和组装很重要;在培养基中分泌大量LC的细胞系会以高生产率分泌高质量的抗体。培养基中的LC含量已通过Western印迹,反相高效液相色谱和酶联免疫吸附法进行了评估。但是,这些分析需要对每种分析的抗体的实验条件进行微调。在这里,我们报告了一种快速,简单的高灵敏度尺寸排阻色谱法(HS-SEC),用于评估低分子量物质(LMWS,主要由LC单体和二聚体组成)和高分子量物质(HMWS,聚集体)用于细胞系筛选。因为LMWS和HMWS分别是细胞系筛选的生产力和质量的重要指标,所以HS-SEC将在大规模生产所需的细胞系选择的第一步中有用。 (C)2015年,日本生物技术学会。版权所有。

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