在一个具有挑战性的双特异性抗体染色学步骤的in silico优化
Zsófia Bencze1, Tobias Hahn2, Henri Kornmann1
1Biologics Process Development, Ferring Biologics Innovation Center, Epalinges, Switzerland.
Biotechnology progress
|January 23, 2025
概括
本研究介绍了用于离子交换色谱的体颗粒吸附 (CPA) 建模工作流程. 该模型有效优化双特异抗体净化,实现高产量和纯度,同时识别关键过程参数.
科学领域:
- 生物制药工艺开发 生物制药过程开发
- 染色学分离科学 染色学分离科学
- 计算机建模 计算建模
背景情况:
- 机械模型增强生物制药过程的理解和优化.
- 离子交换色谱 (IEC) 对生物分离至关重要.
- 体颗粒吸附 (CPA) 形式主义提供了改进的IEC建模.
研究的目的:
- 为IEC展示一个简单的CPA建模工作流程.
- 为了优化对双特异抗体 (BsAb) 的抛光步骤.
- 评估模型在预测保留行为和推断到不同的条件中的性能.
主要方法:
- 使用适应的山本法来计算电荷和平衡参数.
- 通过逆拟合确定结合动力学和质量转移系数.
- 使用六个实验开发了模型,并评估了参数不确定性.
主要成果:
- 优化了三步梯度IEC方法用于BsAb净化.
- 实现了68%的单体产量和96%的纯度,从杂质中分离出来.
- 证明了模型对化盐度和缓冲 pH 效应的预测能力.
- 验证了不同负载组合的外推能力.
结论:
- 该CPA建模工作流是有效的IEC流程开发和优化.
- 盐度被确定为除去杂质的关键过程属性.
- 缓冲 pH 显示对双特异抗体的净化有很小的影响.
相关概念视频
Affinity Chromatography
518
Affinity chromatography is a powerful technique extensively utilized for separating and purifying specific biomolecules from complex mixtures. It capitalizes on the highly selective binding between an analyte and its counterpart, such as antibody-antigen interactions. The counterpart is immobilized on the stationary phase, forming an affinity column. The stationary phase typically consists of solid support, such as agarose or porous glass beads, immobilizing the affinity ligand. The mobile...
518
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


