Discovery of multi-dimensional modules by integrative analysis of cancer genomic data.
Discovery of multi-dimensional modules by integrative analysis of cancer genomic data.
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DOI:
10.1093/nar/gks725
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发表时间:
2012-10
影响因子:
14.9
通讯作者:
Zhou XJ
中科院分区:
文献类型:
--
作者:
Zhang S;Liu CC;Li W;Shen H;Laird PW;Zhou XJ
Recent technology has made it possible to simultaneously perform multi-platform genomic profiling (e.g. DNA methylation (DM) and gene expression (GE)) of biological samples, resulting in so-called ‘multi-dimensional genomic data’. Such data provide unique opportunities to study the coordination between regulatory mechanisms on multiple levels. However, integrative analysis of multi-dimensional genomics data for the discovery of combinatorial patterns is currently lacking. Here, we adopt a joint matrix factorization technique to address this challenge. This method projects multiple types of genomic data onto a common coordinate system, in which heterogeneous variables weighted highly in the same projected direction form a multi-dimensional module (md-module). Genomic variables in such modules are characterized by significant correlations and likely functional associations. We applied this method to the DM, GE, and microRNA expression data of 385 ovarian cancer samples from the The Cancer Genome Atlas project. These md-modules revealed perturbed pathways that would have been overlooked with only a single type of data, uncovered associations between different layers of cellular activities and allowed the identification of clinically distinct patient subgroups. Our study provides an useful protocol for uncovering hidden patterns and their biological implications in multi-dimensional ‘omic’ data.
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DOI:
10.1038/nrc2644
发表时间:
2009-06
期刊:
Nature reviews. Cancer
影响因子:
--
作者:
通讯作者:
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DOI:
10.1038/nrc1299
发表时间:
2004-03
期刊:
Nature reviews. Cancer
影响因子:
--
作者:
通讯作者:
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影响因子:
82.9
作者:
Dinulescu, DM;Ince, TA;Jacks, T
通讯作者:
Jacks, T
影响因子:
4.8
作者:
Käkönen, SM;Selander, KS;Guise, TA
通讯作者:
Guise, TA
影响因子:
3.9
作者:
Dahiya N;Morin PJ
通讯作者:
Morin PJ