缓冲系统改善了单克隆抗体净化过程中的宿主细胞蛋白质杂质的去除
Dániel Lakatos1, Martina Idler2, Selina Stibitzky1
1Bioprocess Development Biologicals, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an der Riss, Germany.
Biotechnology and bioengineering
|September 19, 2024
概括
蛋白A染色体中的甘氨酸缓冲剂可以改善生物制药制造中的宿主细胞蛋白质去除和聚酸盐 (PS) 稳定性. 这种方法有助于防止在药物加工过程中PS降解和颗粒形成.
科学领域:
- 生物制药制造业 生物制药制造业
- 蛋白质化学 蛋白质化学
- 过程开发 过程开发
背景情况:
- 聚酸盐 (PS) 是生物制药的关键稳定剂,如单克隆抗体 (mAbs).
- PS易受残留宿主细胞蛋白 (HCP) 的降解,导致粒子形成和药物功能受损.
- 目前的下游处理 (DSP) 策略侧重于HCP移除以减轻PS降解.
研究的目的:
- 评价糖氨酸缓冲剂作为一种替代酸缓冲剂的替代品,用于蛋白质A亲和染色学中的酸性化.
- 评估甘氨酸缓冲剂在单克隆抗体 (mAb) 下游加工过程中对宿主细胞蛋白 (HCP) 移除和聚酸盐 (PS) 稳定性的影响.
- 在使用甘氨酸缓冲剂时调查度和沉的形成.
主要方法:
- 糖氨酸缓冲区与乙酸缓冲区在蛋白质A染色学中酸性化过程中的比较.
- 在pH重新调整后低pH病毒失活后,分析度和沉成分 (HCP,DNA).
- 评估使用离子交换流通染色学与甘氨酸缓冲剂去除HCP的效率.
主要成果:
- 在使用甘氨酸缓冲剂时在pH重新调整时观察到度增加,归因于HCP和DNA沉物.
- 甘氨酸缓冲剂,作为一个zwitterion,不会有助于导电性,增强HCP删除在随后的离子交换染色学.
- 这项研究强调了甘氨酸在改善HCP去除和PS稳定性方面之前未被描述的好处.
结论:
- 甘氨酸缓冲剂在mAb DSP中为蛋白质A染色学提供了比乙酸缓冲剂的优势.
- 使用甘氨酸缓冲剂可以改善HCP去除和增强聚酸盐 (PS) 稳定性,降低颗粒形成的风险.
- 这一发现为优化生物制药制造工艺和确保药物产品质量提供了一种新的战略.
关键词:
宿主细胞蛋白 (HCP) 是指宿主细胞蛋白质.单克隆抗体 (mAb) 是一个单克隆抗体.蛋白质A亲和性染色学 蛋白质A亲和性染色学乙酸缓冲器的使用情况甘氨酸缓冲器 甘氨酸缓冲器聚酸盐降解降解的方法更多相关视频
10:50Purification and Analytics of a Monoclonal Antibody from Chinese Hamster Ovary Cells Using an Automated Microbioreactor System
Published on: May 1, 2019
14.6K
10:33Isolation and Characterization Of Chimeric Human Fc-expressing Proteins Using Protein A Membrane Adsorbers And A Streamlined Workflow
Published on: January 8, 2014
7.1K
相关概念视频
Immunoprecipitation
5.3K
Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
5.3K
Detergent Purification of Membrane Proteins
5.1K
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
5.1K
