arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.06338q-bio.QMcs.LG
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Graph2MDA:一个预测微生物-药物缔合的多模态变分图嵌入模型

Graph2MDA: a multi-modal variational graph embedding model for predicting microbe-drug associations

School of Computer Science and Engineering, Central South University(中南大学计算机科学与工程学院);School of Computer Science and Technology, Nanjing Tech University(南京工业大学计算机科学与技术学院)

Lei Deng, Yibiao Huang, Xuejun Liu, Hui Liu

摘要:

大量临床研究表明,人体内的微生物与人体宿主相互作用密切,参与药物疗效和毒性的调节。微生物已经成为开发抗菌剂的新目标。因此,微生物-药物联合体的筛选对药物研发具有重要意义。随着微生物基因组和药理学数据集的增加,我们非常有动力开发一种有效的计算方法来识别新的微生物-药物关联。本文提出了一种基于变分图自动编码器(VGAE)的微生物-药物缔合预测新方法Graph2MDA。我们基于微生物和药物的多个特征,如分子结构、微生物基因序列和功能注释,构建了多模态属性图。以多模态属性图作为输入,训练VGAE学习每个节点和整个图的信息丰富、可解释的潜在表示,然后使用深度神经网络分类器预测微生物-药物关联。超参数分析和模型消融研究表明,我们的模型的敏感性和鲁棒性。我们在三个独立的数据集上对我们的方法进行了评估,实验结果表明,我们提出的方法优于现有的六种最先进的方法。我们还探讨了药物的学习潜在表征的意义,发现药物显示出明显的聚类模式,与药物ATC分类显著一致。此外,我们对两种微生物和两种药物进行了案例研究,发现PubMed文献中有75%-95%的预测关联。我们广泛的性能评估验证了我们提出的方法的有效性。

英文摘要:

Accumulated clinical studies show that microbes living in humans interact closely with human hosts, and get involved in modulating drug efficacy and drug toxicity. Microbes have become novel targets for the development of antibacterial agents. Therefore, screening of microbe-drug associations can benefit greatly drug research and development. With the increase of microbial genomic and pharmacological datasets, we are greatly motivated to develop an effective computational method to identify new microbe-drug associations. In this paper, we proposed a novel method, Graph2MDA, to predict microbe-drug associations by using variational graph autoencoder (VGAE). We constructed multi-modal attributed graphs based on multiple features of microbes and drugs, such as molecular structures, microbe genetic sequences, and function annotations. Taking as input the multi-modal attribute graphs, VGAE was trained to learn the informative and interpretable latent representations of each node and the whole graph, and then a deep neural network classifier was used to predict microbe-drug associations. The hyperparameter analysis and model ablation studies showed the sensitivity and robustness of our model. We evaluated our method on three independent datasets and the experimental results showed that our proposed method outperformed six existing state-of-the-art methods. We also explored the meaningness of the learned latent representations of drugs and found that the drugs show obvious clustering patterns that are significantly consistent with drug ATC classification. Moreover, we conducted case studies on two microbes and two drugs and found 75\%-95\% predicted associations have been reported in PubMed literature. Our extensive performance evaluations validated the effectiveness of our proposed method.\

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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