通过基于SHAP的解释来预测ERα对手的多目标QSAR预测
Jinhui Cao1, Yanli Liu1,2
1School of Science, Wuhan University of Science and Technology, Wuhan, China.
本研究介绍了一种用于药物发现的两阶段机器学习框架,使用定量结构-活性关系 (QSAR) 建模和一种新的双选特征 (DFFS) 方法. 该方法有效预测药物活性和ADMET特性,增强候选药物的评估.
科学领域:
- 计算化学和化学信息学
- 药理学和药物发现
- 在生物信息学中的机器学习.
背景情况:
- 评估候选药物需要评估生物活性和吸收,分布,新陈代谢,分泌和毒性 (ADMET) 属性.
- 现有的方法可能无法完全捕捉分子结构和药理学特征之间的复杂关系.
- 需要综合预测框架来简化药物开发.
研究的目的:
- 开发和验证一个双阶段的预测框架,用于全面评估候选药物.
- 将定量结构-活性关系 (QSAR) 建模与机器学习相结合,用于预测药物活性和ADMET特性.
- 引入和评估一种新的双过特征选择 (DFFS) 方法,用于识别关键分子描述符.
主要方法:
- 一种两阶段的机器学习方法,将QSAR建模与特征选择相结合.
- 开发一个双过特征选择 (DFFS) 方法,整合统计分析和机器学习特征的重要性.
- 应用LightGBM用于活动预测和堆叠模型用于多任务ADMET属性预测.
- 利用分子对接和SHAP分析来获得机械洞察力和模型解释.
主要成果:
- DFFS方法成功地为QSAR建模选择了关键分子描述符.
- 轻GBM在预测ERα对抗剂活性方面表现优异 (MRE为0.0775).
- 堆叠模型实现了ADMET属性预测的高精度,所有任务的AUC分数超过0.95.
- DFFS的表现优于单个特征选择方法和ChemBERTa生成的特征.
结论:
- 拟议的两阶段预测框架为评估候选药物提供了一个强大的方法.
- DFFS方法有效地识别了QSAR和机器学习模型的相关分子描述符.
- 综合框架有助于识别具有有利ADMET配置文件的高活性化合物,推动药物发现工作.
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