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arXiv 2407.21028q-bio.BMcs.LG
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Antibody DomainBed:治疗性蛋白质设计中的分布外泛化

Antibody DomainBed: Out-of-Distribution Generalization in Therapeutic Protein Design

Prescient Design(普雷赛特设计公司);Genentech(基因泰克公司);New York University(纽约大学)
Nataša Tagasovska, Ji Won Park, Matthieu Kirchmeyer, Nathan C. Frey, Andrew Martin Watkins, Aya Abdelsalam Ismail, Arian Rokkum Jamasb, Edith Lee, Tyler Bryson,… 展开作者

Nataša Tagasovska, Ji Won Park, Matthieu Kirchmeyer, Nathan C. Frey, Andrew Martin Watkins, Aya Abdelsalam Ismail, Arian Rokkum Jamasb, Edith Lee, Tyler Bryson, Stephen Ra, Kyunghyun Cho

AI总结:

本文针对治疗性蛋白质设计中跨设计轮次的分布偏移问题,提出在五个领域上应用领域泛化方法分类抗体-抗原相互作用稳定性,并发现基础模型与集成方法能提升分布外预测性能,同时公开扩展的DomainBed基准与数据集。

摘要:

机器学习(ML)在加速药物设计方面已展现出显著前景。治疗性分子的主动 ML 引导优化通常依赖一个代理模型来预测感兴趣的目标性质。模型预测被用于决定在实验室中评估哪些设计,随后模型根据新的测量结果进行更新,以指导下一轮决策。一个关键挑战在于,每一轮的实验反馈会引发下一轮候选方案或实验方案的改变,从而导致分布偏移。为提升对这些偏移的鲁棒性,我们必须在模型训练中显式地考虑它们。我们应用领域泛化(DG)方法,在由设计轮次定义的五个领域上对抗体与抗原之间相互作用的稳定性进行分类。我们的结果表明,基础模型和集成方法能够提升在分布外领域上的预测性能。我们公开发布了扩展 DG 基准“DomainBed”的代码库,以及模拟跨设计轮次分布偏移的抗体序列与结构相关数据集。

英文摘要:

Machine learning (ML) has demonstrated significant promise in accelerating drug design. Active ML-guided optimization of therapeutic molecules typically relies on a surrogate model predicting the target property of interest. The model predictions are used to determine which designs to evaluate in the lab, and the model is updated on the new measurements to inform the next cycle of decisions. A key challenge is that the experimental feedback from each cycle inspires changes in the candidate proposal or experimental protocol for the next cycle, which lead to distribution shifts. To promote robustness to these shifts, we must account for them explicitly in the model training. We apply domain generalization (DG) methods to classify the stability of interactions between an antibody and antigen across five domains defined by design cycles. Our results suggest that foundational models and ensembling improve predictive performance on out-of-distribution domains. We publicly release our codebase extending the DG benchmark ``DomainBed,'' and the associated dataset of antibody sequences and structures emulating distribution shifts across design cycles.

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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