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通过分子动力学和实验阐明在不同可压缩接口的机械应力下蛋白质粒子形成的机制
Tim Sarter1, Athanasia Karavalasi2, Wolfgang Friess1
1Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Ludwig-Maximilians-Universität München, Munich 81377, Germany.
Molecular pharmaceutics
|January 23, 2026
概括
压缩界面上的机械应力,如空气-液体和-液体,可以导致蛋白质聚合. 这项研究揭示了-液体接口促进更多的粒子形成比空气-液体接口由于更强的蛋白质结合.
科学领域:
- 生物制药制造业 生物制药制造业
- 蛋白质科学 蛋白质科学
- 材料科学 材料科学 材料科学
背景情况:
- 对蛋白质溶液的机械应力可以诱导聚合,这是生物制药加工中的一个关键问题.
- 空气-液体和-液体接口在生物制药处理和加工中很常见.
- 需要对不同可压缩界面的蛋白质颗粒形成进行比较机制研究.
研究的目的:
- 阐明和比较-液体和空气-液体接口的蛋白质颗粒形成机制.
- 调查介面应力在蛋白质聚合中的作用.
- 为减轻生物制药制造中的颗粒形成提供见解.
主要方法:
- 结合了新的分子动力学模拟与已建立的实验设置.
- 孤立和精确定义的压缩-解压应力条件.
- 在-液体和空气-液体接口上比较蛋白质颗粒的形成.
主要成果:
- 蛋白质松散地与空气液体接口结合,减少压缩时的聚合.
- 在-液体接口的更强的蛋白质结合促进粒子形成,即使在低压缩.
- 虽然聚合物形成在空气-液体接口较少,但由于更容易脱落,观察到类似的颗粒数量.
- 与-液体接口相比,空气-液体接口形成的粒子较小.
- 在低pH下,高压缩速度和高蛋白充电减少了空气-液体界面的颗粒形成.
结论:
- 在-液体和空气-液体接口之间,蛋白质聚合机制显著不同.
- 了解这些差异对于制定防止蛋白质聚合的策略至关重要.
- 这些发现对于优化生物制药制造和处理流程至关重要,以确保产品的质量和安全.
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