基于专家知识的药物重新定位增强图形神经网络
IEEE journal of biomedical and health informatics
|November 17, 2025
概括
本研究介绍了DReKGNN,这是一种用于药物重新定位的新框架,它通过大型语言模型 (LLM) 和图形神经网络 (GNN) 利用专家知识. DReKGNN通过整合生物机制来提高药物疾病关联预测,以获得更可解释和更准确的结果.
科学领域:
- 计算生物学和化学信息学.
- 药物的发现和开发.
- 医疗保健中的人工智能.
背景情况:
- 药物重新定位加速了对现有药物的新治疗指示的识别.
- 图形神经网络 (GNN) 对于建模药物疾病关联是有效的,但通常使用随机初始化的节点嵌入.
- 现有的GNN方法缺乏可解释性,并未将生物数据库中的有价值的专家知识纳入.
研究的目的:
- 开发一个新的框架,DReKGNN,用于药物重新定位,将专家知识整合到GNN中.
- 提高用于药物疾病关联预测的节点嵌入的可解释性和准确性.
- 提高药物发现管道的效率和有效性.
主要方法:
- DReKGNN利用大型语言模型 (LLM) 作为一个语义桥梁,将DrugBank和OMIM数据库的专家知识纳入其中.
- 专家知识描述,专注于生物机制,直接从数据库中提取,避免提示模板.
- 通过LLM生成的节点嵌入与GNN集成,使用平均聚合策略来减轻噪音并改善预测.
主要成果:
- 实验结果表明,与现有方法相比,DReKGNN在预测药物疾病关联方面表现优越.
- 案例研究进一步证实了DReKGNN框架的有效性.
- 生成的节点嵌入式是可解释的,并与专家生物知识保持一致.
结论:
- 通过LLM和GNN整合专家知识,DReKGNN有效地提高了药物重新定位.
- 该框架提供可解释的节点嵌入,推进AI驱动药物发现领域.
- DReKGNN提供了一种有前途的方法来加快新药指示的识别.
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