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arXiv 2305.01475q-bio.GNcs.LGcs.NE
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用于生成具有所需基因组学特征的合成DNA序列的癌症启发基因组映射模型

Cancer-inspired Genomics Mapper Model for the Generation of Synthetic DNA Sequences with Desired Genomics Signatures

School of Mechanical Engineering, Tel Aviv University(特拉维夫大学机械工程学院);Department of Cancer Biology, Cancer Institute, University College London(伦敦大学学院癌症研究所癌症生物学系)

Teddy Lazebnik, Liron Simon-Keren

AI总结:

针对现有基因组生成器忽视生物学关系约束的问题,本文提出结合GA与DL的CGMM,将对照基因组转化为目标表型合成基因组,并在两项任务上优于四种现有生成器。

摘要:

基因组数据在现代医学中至关重要,为诊断和治疗提供了巨大潜力。得益于技术进步,已有数百万个健康和患病基因组完成测序;然而,在规模和获取方面,为特定研究(尤其是验证研究)获得最合适的数据仍然具有挑战性。因此,计算机模拟基因组序列生成器已被提出作为一种可能的解决方案。但是,当前生成器主要利用在训练数据中以有限计算复杂度检测到的浅层(随机)关联来生成质量较差的数据。这意味着它们没有考虑最初导致所观察到关联的适当生物学关系和约束。为解决这一问题,我们提出癌症启发基因组映射模型(CGMM),该模型结合遗传算法(GA)和深度学习(DL)方法来应对这一挑战。CGMM模拟产生遗传变异和突变的过程,将容易获得的对照基因组转化为具有所需表型的基因组。我们证明,基于无监督聚类,CGMM能够生成具有祖先和癌症等选定表型的合成基因组,且这些基因组与相应表型的真实基因组无法区分。我们的结果表明,CGMM在两项不同任务上优于四种当前最先进的基因组学生成器,表明CGMM将适用于基因组医学中的广泛用途,尤其是急需的验证研究。

英文摘要:

Genome data are crucial in modern medicine, offering significant potential for diagnosis and treatment. Thanks to technological advancements, many millions of healthy and diseased genomes have already been sequenced; however, obtaining the most suitable data for a specific study, and specifically for validation studies, remains challenging with respect to scale and access. Therefore, in silico genomics sequence generators have been proposed as a possible solution. However, the current generators produce inferior data using mostly shallow (stochastic) connections, detected with limited computational complexity in the training data. This means they do not take the appropriate biological relations and constraints, that originally caused the observed connections, into consideration. To address this issue, we propose cancer-inspired genomics mapper model (CGMM), that combines genetic algorithm (GA) and deep learning (DL) methods to tackle this challenge. CGMM mimics processes that generate genetic variations and mutations to transform readily available control genomes into genomes with the desired phenotypes. We demonstrate that CGMM can generate synthetic genomes of selected phenotypes such as ancestry and cancer that are indistinguishable from real genomes of such phenotypes, based on unsupervised clustering. Our results show that CGMM outperforms four current state-of-the-art genomics generators on two different tasks, suggesting that CGMM will be suitable for a wide range of purposes in genomic medicine, especially for much-needed validation studies.

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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