在常见的药物缓冲器中预测高度单克隆抗体配方的结合体稳定性,使用改进的聚乙烯糖醇诱导蛋白质沉试验
Noemi P Meza1, Colin A Hardy1, Kylie H Morin1
1Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403, United States.
Molecular pharmaceutics
|October 23, 2023
概括
这项研究验证了PEG诱导的蛋白沉试验,用于预测高度单克隆抗体 (mAb) 配方的合稳定性. 改进的方法和理论模型增强了mAbs.的配方开发.
科学领域:
- 生物制药开发 生物制药开发
- 蛋白质化学 蛋白质化学
- 配方科学科学 配方科学
背景情况:
- 在高度单克隆抗体 (mAb) 配方中,体稳定性至关重要.
- 用PEG诱导的蛋白质沉试验来评估蛋白质溶液的稳定性.
- 目前的理论模型和这些试验的实际实用性需要在不同的mAb配方中进行更广泛的验证.
研究的目的:
- 系统地评估低度PEG诱导降水试验与高度mAb配方属性之间的相关性.
- 为了验证PEG诱导沉试验参数对排列合稳定性的有用性.
- 改进理论模型并评估配方缓冲效应对mAb的体稳定性.
主要方法:
- PEG诱导的蛋白质沉试验是在24个缓冲器中在20°C和5°C的低蛋白质度 (1 mg/mL) 中对3 mAbs进行的.
- 高度 (100 mg/mL) mAb配方的特点是冷诱导的相分离,度和通过超过的可缩性.
- 在低度测试预测和高度配方行为之间进行了相关性分析.
主要成果:
- 三个PEG诱导的沉测定参数 (Cmid,μB和Tcloud) 有效地对高度mAb配方的体稳定性进行了排名.
- 为PEG诱导的降水测定开发了一种新的高通量方法,需要最小的样本.
- 建立了一个改进的理论模型,用于计算体稳定性的强大,独立于实验的热力学参数 (μB和 εB).
- 系统分析了pH和缓冲盐对常见配方缓冲剂的mAb体稳定性的影响.
结论:
- 带有精细参数和理论模型的PEG诱导蛋白沉试验是预测和评估高度配方中的mAb合稳定性的宝贵工具.
- 开发的方法为生物制药配方开发提供了改进的理论和实践方法,使可靠的选和优化成为可能.
- 了解配方成分 (如pH和缓冲盐) 的影响对于确保mAb稳定性至关重要.
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