对于mAbs的DSC衍生 (Ea & ΔG) 能量和聚合预测
Ralf J Carrillo1, Andy Semple2
1Merck & Co., Inc., Pharmaceutical Sciences, Research Pharmacy, SSP Sterile Specialty Products, Kenilworth N.J., USA.
Journal of pharmaceutical sciences
|May 18, 2024
概括
差分扫描热度计 (DSC) 用于计算单克隆抗体 (mAbs) 的展开 (Ea) 的激活能量和展开 (ΔG) 的吉布斯自由能量. 这些能量预测聚合,并告知稳定的mAb配方的发展.
科学领域:
- 生物物理化学 生物物理化学
- 蛋白质治疗药物 蛋白质治疗药物
- 配方科学科学 配方科学
背景情况:
- 单克隆抗体 (mAbs) 是重要的生物治疗药物,但它们在储存期间的稳定性是一个重大问题.
- 聚合,特别是高分子量 (HMW) 物种的形成,可以影响mAb的有效性和安全性.
- 了解mAb展开的能量是预测和减轻聚合的关键.
研究的目的:
- 用差分扫描热度计 (DSC) 计算mAbs的展开的阿雷尼乌斯激活能量 (Ea) 和展开的吉布斯自由能量 (ΔG).
- 为了研究DSC衍生的能量参数和mAb聚合之间的关系.
- 根据能量景观和表面特性开发mAb聚合的预测模型.
主要方法:
- 差分扫描热量计 (DSC) 用于测量化温度 (Tm) 和热容量变化 (ΔCp) 在各种扫描速率 (60-200°C/hr) 中为4mAbs.
- 动力展开能量 (Ea) 由不同扫描速率的DSC衍生 ΔTm变化计算出来.
- 热力学展开能量 (ΔG) 由Tm,ΔCp和ΔH测量得出,并推断到平衡条件 (0°C/hr).
- 统计多变量分析集成的动力 (Ea) 和热力学 (ΔG) 能量与内表面特性.
主要成果:
- DSC衍生的Ea趋势与观察到的聚合物形成相关,使得在5°C和40°C保存9个月后预测%HMW的形成.
- 通过结合动力 (Ea) 和热力学 (ΔG) 数据,构建了mAb展开和聚合的全能量景观.
- 多变量分析确定了影响聚合的显著参数,导致了对mAb配方的预测模型的开发.
结论:
- 由DSC衍生的展开能量 (Ea和ΔG) 提供了关于mAb稳定性和聚合倾向的宝贵见解.
- 开发的预测模型可以指导稳定的mAb治疗药物的配方,最大限度地减少储存期间的聚合.
- 这种方法为评估和增强单克隆抗体配方的长期稳定性提供了一个强大的策略.
关键词:
激活能量是什么 激活能量是什么阿雷尼乌斯 (Arrhenius) 是一个古老的科学家.生物物理学的生物物理.生物类似物是什么意思热量测量方法热量测量方法配方 配方 配方 是一个吉布斯的自由能量是自由的.运动学 运动学分子建模分子建模蛋白质的展开 蛋白质的展开热力学是一种热力学.可能是MABS.更多相关视频
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