利用来自广泛的连接体库的异构原子类型和数量来开发使用基于机器学习的分类器的新型hERG阻断器QSAR模型.
Safa Haddad1,2, Lalehan Oktay1,2, Ismail Erol1,2
1Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahçeşehir University, Istanbul 34353, Turkey.
ACS omega
|November 6, 2023
概括
这项研究确定了药物分子中的关键异构原子,这些异构原子阻断了人类以太-去-去-去相关基因 (hERG) 通道,这对于预防长QT综合征 (LQTS) 等心血管风险至关重要. 了解这些相互作用有助于开发更安全的药物.
科学领域:
- 心血管药理学心血管药理学
- 药品化学 药品化学 是一个
- 计算毒理学计算毒理学
背景情况:
- 人类以太-to-go-go相关基因 (hERG) 通道对于心脏再极化至关重要.
- 功能障碍的hERG通道可能导致长QT综合征 (LQTS),导致心律失常和心脏突然死亡.
- 药物诱导的hERG通道阻塞是一个重要的安全问题,需要仔细设计药物.
研究的目的:
- 为了确定负责有效的hERG通道阻塞的配体中的关键异构原子.
- 建立定量结构-活性关系 (QSAR) 模型,用于预测hERG通道抑制活性.
- 阐明异构原子类型和数量在hERG通道相互作用中的特定作用.
主要方法:
- 基于连接体的定量结构-活性关系 (QSAR) 模型的开发,使用广泛的连接体库.
- 机器学习技术的应用,特别是K-最近的部分最小平方 (KPLS),具有八个不同的指纹.
- 利用分子对接,分子动力学模拟和MM/GBSA计算进行详细的相互作用分析.
主要成果:
- QSAR模型有效地确定了影响hERG通道阻塞的关键结构特征,特别是异原子.
- 基于连接体指纹的基础上,KPLS方法在建模hERG通道活动方面表现出高效率.
- 分析显示,异构原子类型和数量对hERG阻断剂的效果有重大影响.
结论:
- 异原子在药物配体阻断hERG通道的机制中发挥着关键作用.
- 这项研究提供了对hERG通道活动的异质原子贡献的定量理解.
- 这些发现可以指导设计更安全的药物,降低hERG介导的心血管不良影响的风险.
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