生物制药配方中的替代性缓冲系统及其对蛋白质稳定性的影响
Blaž Lebar1,2, Mitja Zidar2, Janez Mravljak1
1University of Ljubljana Faculty of Pharmacy, Department of Pharmaceutical Chemistry, SI-1000 Ljubljana Slovenia.
Acta pharmaceutica (Zagreb, Croatia)
|September 16, 2024
概括
替代性缓冲系统显著影响生物制药稳定性. 氨酸/酸盐缓冲剂在解压力期间保持蛋白质稳定性方面表现有希望,比单克隆抗体 (mAbs) 的传统选择提供更高的性能.
科学领域:
- 生物制药配方开发发展
- 蛋白质的稳定性和表征.
- 缓冲系统优化缓冲系统优化
背景情况:
- 生物制药配方旨在提高药物的稳定性,包括化学,形状,体和界面方面.
- 缓冲区的组成对于蛋白质的稳定性至关重要,但传统的缓冲区,如胺和酸盐,可能不适合所有单克隆抗体 (mAbs).
- 探索替代性缓冲系统对于优化生物制药配方至关重要.
研究的目的:
- 研究各种替代缓冲系统对七种不同的单克隆抗体 (mAbs) 稳定性的影响.
- 评估离子强度,缓冲度,mAb度和应力条件对蛋白质稳定性的影响.
- 确定最佳的缓冲系统,以提高不同压力条件下的蛋白质稳定性.
主要方法:
- 在各种缓冲系统,离子强度,度和应力条件 (温度,冷解,光线) 中测试了七种不同的mAbs.
- 通过使用尺寸排除色谱量化可溶性聚合物形成来评估蛋白质稳定性.
- 在不同的缓冲组合中分析了特定辅助剂 (如阿尔金宁和氨酸) 对蛋白质稳定性的影响.
主要成果:
- 在低mAb度的温度压力下,在bis-TRIS/glucuronate缓冲体中观察到蛋白质不稳定性.
- 结解应力显著增加了聚合物形成,氨酸/酸盐缓冲剂在保持稳定性方面表现出高效.
- 添加氨酸稳定了对温度应激的氨酸缓冲器,而氨酸则导致了不稳定. 胺/酸盐缓冲剂在温度和光应力下对高mAb度证明是最佳的.
结论:
- 替代性缓冲系统,如氨酸/酸盐和氨酸/酸盐,可以提供优越的蛋白质稳定性比传统的缓冲对mAbs.
- 缓冲系统的选择高度依赖于特定的mAb,度和应力条件.
- 生物制药配方开发应该考虑超越传统选择的更广泛的缓冲选项,以确保药物产品的最佳性能.
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