相关实验视频
Updated: May 11, 2026

09:55
Force-Clamp Rheometry for Characterizing Protein-based Hydrogels
Published on: August 21, 2018
7.1K
蛋白质模式和批量度影响IgG mAb和Fc-Fusion蛋白膜在空气-水界面上的风湿性质的演变
Valerie P Griffin1, Estephanie L Nottar Escobar1, Ankit Kanthe2
1Department of Chemical and Petroleum Engineering, The University of Kansas, 1530 W 15th Street, Lawrence, Kansas 66045, United States.
ACS applied bio materials
|July 14, 2025
概括
治疗性蛋白膜从粘性过渡到弹性,影响稳定性. Fc-Fusion 蛋白比单克隆抗体更早地发生过渡,而 80 聚酸盐对 IgG 单克隆抗体的影响不同.
科学领域:
- 生物物理化学 生物物理化学
- 蛋白质配方科学 蛋白质配方科学
- 接口现象 接口现象
背景情况:
- 治疗性蛋白质,如单克隆抗体 (mAbs),形成易发生不稳定的界面膜.
- 了解mAb膜形成的动态和质性质转变至关重要.
- 将这些知识扩展到新的生物治疗模式是一个新兴的挑战.
研究的目的:
- 为了研究新型治疗蛋白质中薄膜形成的动态.
- 为了将蛋白质吸附动力学与界面质性质演变相关联.
- 为了比较IgG mAbs和Fc-Fusion蛋白质在薄膜形成和衰老方面.
主要方法:
- 利用表面张力计来测量蛋白质吸附动力学.
- 采用被动微风学来评估界面的风学特性.
- 对于IgG mAbs和Fc-Fusion蛋白质,在三种数量级上的大量蛋白质度各不相同.
主要成果:
- 观察到多阶段蛋白质吸附导致从粘性过渡到粘弹性和弹性膜.
- 在Fc-Fusion蛋白中,粘弹性膜过渡的开始比IgG mAbs.更早.
- 聚酸盐80抑制了IgG mAbs中的过渡,但不是Fc-Fusion蛋白中的过渡.
结论:
- 蛋白质吸附动力学决定了界面膜的整形学和稳定性.
- 与IgG mAbs.相比,Fc-Fusion蛋白具有不同的界面行为.
- 这些发现有助于制定生物治疗界面稳定性的策略.
相关概念视频
Surface Tension, Capillary Action, and Viscosity
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Membrane Fluidity
Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...

