我们可以使用新方法方法将血蛋白结合数据集成到IATA吗? 一个关于双相似物的案例研究
Yash Raj Singh1, Katarzyna Ewa Greber1, Szymon Zdybel2
1Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416, Gdańsk, Poland.
双甲 (BPA) 替代品显示高血蛋白结合 (PPB),超过94%. 一个经过验证的模型预测了PPB,有助于化学安全评估和体外到体外抽取 (IVIVE).
科学领域:
- 毒理学 毒理学 毒理学
- 生物化学 生物化学
- 计算化学计算化学
背景情况:
- 双甲 (BPA) 替代品越来越多地使用,但安全数据,特别是毒理学评估,是有限的.
- 血蛋白结合 (PPB) 是毒动力学和毒动力学的关键因素,影响化学安全评估.
研究的目的:
- 为了研究18种双相似物体的血蛋白结合 (PPB) 特性.
- 开发和验证用于预测PPB的定量结构-属性关系 (QSPR) 模型.
- 评估生物模拟高性能液体染色学 (HSA-HPLC) 和PPB评估的计算方法的实用性.
主要方法:
- 生物模拟高性能液体色谱与人血清白蛋白涂层柱 (HSA-HPLC) 用于实验性PPB确定.
- 使用分子描述符 (范德瓦尔斯表面积,最小投射面积,同电点电荷) 开发了一种定量结构-属性关系 (QSPR) 模型.
- 进行了分子对接模拟,以分析与人血清白蛋白的结合相互作用.
主要成果:
- 所有18种双类型均表现出非常高的血蛋白结合率 (>94%),结构异构体之间存在显著差异.
- 一个经过验证的QSPR模型准确地预测了PPB值,并确定了关键的分子决定因素.
- 分子对接提供了关于结合部位偏好和与人血清白蛋白的稳定相互作用的见解.
结论:
- 使用HSA-HPLC,QSPR建模和对接模拟的综合方法为PPB评估提供了可靠和与人类相关的战略.
- 准确的PPB数据对于增强体外到体外抽取 (IVIVE) 非常重要.
- 这一综合战略支持在测试和评估综合方法 (IATA) 中,在化学安全评估中使用PPB数据.
更多相关视频
08:31Biosensor-based High Throughput Biopanning and Bioinformatics Analysis Strategy for the Global Validation of Drug-protein Interactions
Published on: December 1, 2020
05:47In Silico Modeling Method for Computational Aquatic Toxicology of Endocrine Disruptors: A Software-Based Approach Using QSAR Toolbox
Published on: August 28, 2019
相关概念视频
Protein-Drug Binding: Determination Methods
Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma. These techniques aim to measure the percentage of drugs bound to proteins. Equilibrium dialysis is a commonly used method where the free drug concentration at equilibrium is measured by separating the bound...
Drug Distribution: Plasma Protein Binding
Drug Binding to Blood Components
HSA is the most abundant plasma protein and is vital in drug binding. It contains distinct drug-binding sites, with different drugs exhibiting affinity for specific sites. There are three main drug-binding domains for HSA: sites I, II, and III. These domains are...
Physiological Pharmacokinetic Models: Assumption with Protein Binding
Factors Affecting Protein-Drug Binding: Protein-Related Factors
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 Equilibrium Binding Constant and Binding Strength
