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arXiv 2502.04034cs.LGcs.AI
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基于 Fourier 非对称注意力领域泛化的泛癌药物反应预测

Fourier Asymmetric Attention on Domain Generalization for Pan-Cancer Drug Response Prediction

College of Computer and Information Engineering, Nanjing Tech University(计算机与信息工程学院,南京科技大学)

Ran Song, Yinpu Bai, Hui Liu

AI总结:

提出新颖的领域泛化框架 FourierDrug,通过 Fourier 变换和非对称注意力约束学习特征,在无需目标域数据的情况下,于单细胞和患者水平准确预测泛癌药物反应,性能优于或匹敌现有方法。

摘要:

准确预测药物反应仍然是一个艰巨的挑战,特别是在单细胞水平和临床治疗环境中。一些研究采用迁移学习技术来预测个体细胞和患者的药物反应,但它们在训练期间需要访问目标域数据,而这些数据通常无法获取或只能在将来获得。在本研究中,我们提出了一种新颖的领域泛化框架,称为 FourierDrug,以应对这一挑战。给定从表达谱中提取的特征,我们执行了 Fourier 变换,然后引入了一个非对称注意力约束,该约束会将药物敏感样本聚类成一个紧凑的组,同时驱动抗性样本在频域中分散。我们的实证实验表明,我们的模型有效地从多样化的源域中学习与任务相关的特征,并对未见癌症类型实现了准确的药物反应预测。在单细胞和患者水平的药物反应预测任务上进行评估时,FourierDrug——仅在体外细胞系数据上训练,而无需访问目标域数据——始终优于或至少匹配当前最先进方法的性能。这些发现凸显了我们的方法在实际临床应用中的潜力。

英文摘要:

The accurate prediction of drug responses remains a formidable challenge, particularly at the single-cell level and in clinical treatment contexts. Some studies employ transfer learning techniques to predict drug responses in individual cells and patients, but they require access to target-domain data during training, which is often unavailable or only obtainable in future. In this study, we propose a novel domain generalization framework, termed FourierDrug, to address this challenge. Given the extracted feature from expression profile, we performed Fourier transforms and then introduced an asymmetric attention constraint that would cluster drug-sensitive samples into a compact group while drives resistant samples dispersed in the frequency domain. Our empirical experiments demonstrate that our model effectively learns task-relevant features from diverse source domains, and achieves accurate predictions of drug response for unseen cancer type. When evaluated on single-cell and patient-level drug response prediction tasks, FourierDrug--trained solely on in vitro cell line data without access to target-domain data--consistently outperforms or, at least, matched the performance of current state-of-the-art methods. These findings underscore the potential of our method for real-world clinical applications.

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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