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arXiv 1902.00352q-bio.QMquant-ph
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一种基于量子激发的三维配体虚拟筛选方法

A Quantum-Inspired Method for Three-Dimensional Ligand-Based Virtual Screening

Maritza Hernandez, Guo Liang Gan, Kirby Linvill, Carl Dukatz, Jun Feng, Govinda Bhisetti

摘要:

测量分子之间的相似性是在药物发现的早期阶段部署的虚拟筛选(VS)实验的重要部分。最广泛使用的用于评估分子相似性的方法使用分子指纹来编码结构信息。虽然使用指纹编码的相似性方法是有效的,但它们没有考虑分子结构的所有相关方面。在本文中,我们描述了一种基于量子启发的基于图的分子相似性(GMS)方法,用于基于配体的VS。GMS方法被制定为一个二次无约束的二进制优化问题,可以使用量子退火机解决,提供了利用这种新生的和潜在的突破性技术的机会。在这项研究中,我们考虑了各种功能相关的配体为基础的VS,如药效团功能和三维原子坐标,并将它们包括在GMS方法。我们在DUD_LIB_VS_1.0库的各种数据集上评估了这种方法。我们的研究结果表明,使用三维原子坐标作为比较的功能,产生更高的早期富集值。此外,我们评估的GMS方法对传统的指纹方法的性能。结果表明,GMS方法优于指纹方法的大多数数据集,提出了一种新的替代配体为基础的VS与未来的增强潜力。

英文摘要:

Measuring similarity between molecules is an important part of virtual screening (VS) experiments deployed during the early stages of drug discovery. Most widely used methods for evaluating the similarity of molecules use molecular fingerprints to encode structural information. While similarity methods using fingerprint encodings are efficient, they do not consider all the relevant aspects of molecular structure. In this paper, we describe a quantum-inspired graph-based molecular similarity (GMS) method for ligand-based VS. The GMS method is formulated as a quadratic unconstrained binary optimization problem that can be solved using a quantum annealer, providing the opportunity to take advantage of this nascent and potentially groundbreaking technology. In this study, we consider various features relevant to ligand-based VS, such as pharmacophore features and three-dimensional atomic coordinates, and include them in the GMS method. We evaluate this approach on various datasets from the DUD_LIB_VS_1.0 library. Our results show that using three-dimensional atomic coordinates as features for comparison yields higher early enrichment values. In addition, we evaluate the performance of the GMS method against conventional fingerprint approaches. The results demonstrate that the GMS method outperforms fingerprint methods for most of the datasets, presenting a new alternative in ligand-based VS with the potential for future enhancement.

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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