缓冲剂对喷雾冷干燥/冷化高度蛋白质配方的作用
Chanakya D Patil1, Tarun Tejasvi Mutukuri2, Kinnari Santosh Arte1
1Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA.
International journal of pharmaceutics
|November 21, 2024
概括
缓冲剂的选择显著影响固体配方中的蛋白质稳定性. 酸盐和氨酸缓冲剂导致冷解牛血清白蛋白 (BSA) 配方的不稳定性增加,表明需要仔细选择缓冲剂.
科学领域:
- 制药科学 制药科学
- 生物技术是生物技术.
- 蛋白质化学 蛋白质化学
背景情况:
- 固态蛋白质配方比液体形式提供更好的储存稳定性.
- 受缓冲器影响的配方pH对于蛋白质的稳定性至关重要.
- 在冷凍化過程中的緩衝-輔助劑相互作用可以改變pH值並影響蛋白質完整性.
研究的目的:
- 研究不同缓冲器对冷解蛋白质配方的物理性质和稳定性的影响.
- 评估酸和氨基酸缓冲剂 (histidine, arginine) 在蛋白质降解中的作用.
- 用各种缓冲系统评估牛血清白蛋白 (BSA) 配方的固态稳定性.
主要方法:
- 制备高度BSA配方与三和曼尼托尔 (80:15:5比率).
- 含有不同缓冲系统的配方的冷化和喷冷干燥.
- 使用尺寸排除色谱 (SEC) 来量化单体损失的加速稳定性研究.
- 使用富里埃变换红外光谱学 (ssFTIR) 和粉末X射线衍射 (PXRD) 进行固态特征.
主要成果:
- 酸盐和氨酸缓冲剂的组合在加速稳定性研究中导致了显著的单体损失.
- 虽然ssFTIR和PXRD提供了洞察力,但它们并没有最终确定不稳定机制.
- 根据使用的缓冲系统,BSA配方表现出不同程度的稳定性.
结论:
- 缓冲区选择是影响蛋白质配方固态稳定的关键因素.
- 酸盐和氨酸缓冲剂可能会促进冷化BSA配方的不稳定性.
- 需要进一步的研究来阐明蛋白质配方中缓冲引发的不稳定性的精确机制.
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