arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1611.04473stat.ME
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性状与基因组表型关联的同时检测和估计

Simultaneous detection and estimation of trait associations with genomic phenotypes

Jean Morrison, Noah Simon, Daniela Witten

摘要:

基因组表型,如DNA甲基化和染色质可及性,可用于表征细胞内DNA的转录和调节活性。最近的技术进步使得有可能非常密集地测量这些表型。这种密度往往导致空间结构,在这个意义上说,在附近的网站的测量是非常相似的。在本文中,我们考虑的任务是在实验条件下,细胞类型或疾病亚组之间比较基因组表型。我们提出了一种新的方法,联合自适应差分估计(JADE),它利用了基因组表型固有的空间结构。JADE同时估计平滑的潜在组平均基因组表型谱,并检测组间平均谱不同的区域。我们评估了JADE在几种生物学上合理的模拟环境中的性能。我们还考虑应用于检测成熟骨骼肌细胞,肌管和成肌细胞之间的差异甲基化区域。

英文摘要:

Genomic phenotypes, such as DNA methylation and chromatin accessibility, can be used to characterize the transcriptional and regulatory activity of DNA within a cell. Recent technological advances have made it possible to measure such phenotypes very densely. This density often results in spatial structure, in the sense that measurements at nearby sites are very similar. In this paper, we consider the task of comparing genomic phenotypes across experimental conditions, cell types, or disease subgroups. We propose a new method, Joint Adaptive Differential Estimation (JADE), which leverages the spatial structure inherent to genomic phenotypes. JADE simultaneously estimates smooth underlying group average genomic phenotype profiles, and detects regions in which the average profile differs between groups. We evaluate JADE's performance in several biologically plausible simulation settings. We also consider an application to the detection of regions with differential methylation between mature skeletal muscle cells, myotubes and myoblasts.

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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