DockTox:通过分子对接来准器官毒性的分子启动事件
Rita Ortega-Vallbona1, David Talavera-Cortés1, Laureano E Carpio2
1ProtoQSAR SL, Parque Tecnológico de Valencia, Paterna, Spain.
Toxicology
|April 19, 2025
概括
DockTox工具自动化了对蛋白质的化学对接,在没有动物测试的情况下预测毒性. 它的相互作用分量度量增强了对分子相互作用的理解,以便更安全地进行化学评估.
科学领域:
- 毒理学 毒理学 毒理学
- 计算化学的计算化学
- 药物发现 药物发现 药物发现
背景情况:
- 负面结果途径 (AOP) 提供了一个预测化学毒性的框架.
- 欧盟ONTOX项目旨在减少用于毒性预测的动物试验.
- 分子启动事件 (MIE) 对于理解与蛋白质的化学相互作用至关重要.
研究的目的:
- 开发一种自动化工作流程,用于将小分子与MIE相关的蛋白质对接.
- 创建一个在线工具,DockTox,用于预测化学毒性.
- 评估对接指标的预测性能.
主要方法:
- 为20多个预处理的蛋白质结构开发了一个自动化的对接工作流.
- 在DockTox.在线工具中实现了工作流.
- 产生了小分子对应物,进行了对接,并分析了结合能量,残留物和相互作用图.
- 引入了一种相互作用分数,用于将化学相互作用与已知的联结体进行比较.
主要成果:
- DockTox成功地将小分子接到与MIE相关的蛋白质.
- 相互作用分数比结合能量更具信息性,用于区分结合物和非结合物,使用PPARα作为模型.
- 该工具提供了有关约束能和相互作用概况的见解.
结论:
- 在毒理学中DockTox增强了对蛋白相互作用的理解.
- 该工具支持虚拟查,以预测化学物质暴露的不良结果.
- DockTox是分层风险评估策略的宝贵资产,减少了对动物试验的依赖.
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