蛋白质结合导致聚乙烯纳米粒子冠状病毒的稳定性降低和溶解障碍
Radha P Somarathne1, Dhanush L Amarasekara1, Chathuri S Kariyawasam1
1Department of Chemistry, Mississippi State University, Mississippi State, MS 39762 USA.
bioRxiv : the preprint server for biology
|July 18, 2023
概括
冠状冠状蛋白是一种蛋白质.
科学领域:
- 纳米技术 纳米技术
- 生物物理学的生物物理.
- 材料科学 材料科学 材料科学
背景情况:
- 纳米颗粒上的蛋白质冠状形成会影响生物相互作用.
- 了解冠状病毒中的蛋白质构成和乱对于基于纳米粒子的药物输送至关重要.
- 关于蛋白质乱程度和溶剂可访问性的关键问题仍然存在.
研究的目的:
- 在不同尺寸的聚乙烯纳米颗粒上开发蛋白冠状障碍模型.
- 为了研究纳米颗粒大小对蛋白质结合亲和力,固态度和形状的影响.
- 阐明控制蛋白质-冠状病毒相互作用的热力学原理.
主要方法:
- 全面的热力学建模.
- 频谱学实验. 光谱学实验.
- 分析蛋白质结合亲和力,固态测量和水力动力学尺寸.
主要成果:
- 绑定亲和力随着纳米粒子大小的增加而下降.
- 蛋白质冠状体是高度溶解和无序的,固定在特定的位置.
- 较大的纳米颗粒导致蛋白质不那么严重的破坏稳定,减少了疏水性暴露.
- 障碍尺度与纳米粒子尺寸一致,类似于聚合物尺寸.
结论:
- 开发了一个纳米粒子蛋白冠状病毒疾病的模型,这取决于纳米粒子的大小.
- 这些发现解释了较大的纳米颗粒的粉样纤维化率增加.
- 这项研究提供了关于细胞受体如何识别治疗纳米粒子中的蛋白质障碍的见解.
相关概念视频
The Equilibrium Binding Constant and Binding Strength
13.0K
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
13.0K
Complexation Equilibria: Factors Influencing Stability of Complexes
416
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
416
Solvating Effects
7.5K
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
7.5K
Factors Affecting Protein-Drug Binding: Drug-Related Factors
143
Drug binding to proteins is a complex phenomenon influenced by various drug-related factors, each playing a significant role in the interaction between drugs and proteins within the body.
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In...
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In...
143
Factors Affecting Protein-Drug Binding: Protein-Related Factors
198
Drug binding to proteins is a key aspect of pharmacokinetics and can influence a drug's distribution, absorption, and elimination in the body. Several factors, including the drug's physiochemical properties, protein concentration, disease states, and the number of binding sites on the protein, influence this process.
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be...
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be...
198
Factors Affecting Protein-Drug Binding: Drug Interactions
202
Drug interactions are a critical aspect of pharmacology and can occur when two or more drugs compete for the same binding site. This competition can result in one drug displacing another, altering the effect of the displaced drug. Drug interactions are complex processes that rely heavily on how much of the displacer drug is present and how strongly it can bind to the same sites as the displaced drug.
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
202


