多域蛋白-尿素相互作用:结合行为的差异导致单克隆抗体的不同不稳定趋势
Jiyoung Yang1,2, Oliver Burkert2, Boris Mizaikoff1
1Institute for Analytical and Bioanalytical Chemistry, University of Ulm, Ulm D-89069, Germany.
尿素通过强烈结合来破坏单克隆抗体 (mAbs) 的稳定,在高温下增加聚合. 分子动力学模拟揭示了特定领域的相互作用,有助于药物配方开发.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 制药科学 制药科学
背景情况:
- 单克隆抗体 (mAbs) 是关键的治疗药物,但它们的稳定性受制剂辅助剂,如尿素的影响.
- 了解蛋白质-溶解物相互作用对于开发稳定的抗体配方至关重要.
- 像mAbs这样复杂的多域蛋白质对实验稳定性分析提出了挑战.
研究的目的:
- 为了研究尿素对单克隆抗体 (mAb) 稳定性的影响.
- 为了阐明尿素和mAbs.之间的特定领域相互作用.
- 探索分子动力学 (MD) 模拟和柯克伍德-巴夫理论在研究蛋白质-溶解物相互作用中的实用性.
主要方法:
- 分子动力学 (MD) 模拟和差异扫描度学 (DSF) 的联合使用.
- 在域级别分析蛋白质与尿素的结合.
- 应用柯克伍德-巴夫理论来解释模拟数据.
主要成果:
- 尿素是一种变质化溶解物,强烈地与mAbs结合,在高温下促进变质化和聚合.
- 蛋白质-尿素相互作用是域特定的,受个别mAb域表面特性的影响.
- 列纳德-斯相互作用被确定为主要驱动器的重要尿素结合mAbs.
结论:
- 结合Kirkwood-Buff理论的MD模拟可以有效地剖析特定域的蛋白质-溶解物相互作用.
- 这种方法有助于理解和预测在配方辅助剂的存在下多域蛋白的行为.
- 这些发现支持在抗体药物发现和配方开发中使用计算方法.
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
09:45Production of Monoclonal Antibodies Targeting Aminopeptidase N in the Porcine Intestinal Mucosal Epithelium
Published on: May 18, 2021
相关概念视频
Factors Affecting Protein-Drug Binding: Drug Interactions
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
Drug Distribution: Plasma Protein Binding
Factors Affecting Protein-Drug Binding: Protein-Related Factors
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be...
Cooperative Allosteric Transitions
Factors Affecting Protein-Drug Binding: Patient-Related Factors
Age stands as a key determinant in protein-drug binding. Neonates, characterized by low albumin content, experience heightened concentrations of unbound drugs such as phenytoin and...
Factors Affecting Protein-Drug Binding: Drug-Related Factors
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In...
