Detecting intergene correlation changes in microarray analysis: a new approach to gene selection.

BMC Bioinformatics
Rui HuAndrei Yakovlev

Abstract

Microarray technology is commonly used as a simple screening tool with a focus on selecting genes that exhibit extremely large differential expressions between different phenotypes. It lacks the ability to select genes that change their relationships with other genes in different biological conditions (differentially correlated genes). We intend to enrich the above procedure by proposing a nonparametric selection procedure that selects differentially correlated genes. Using both simulations and resampling techniques, we found that our procedure correctly detected genes that were not differentially expressed but differentially correlated. We also applied our procedure to a set of biological data and found some potentially important genes that were not selected by the traditional method. Microarray technology yields multidimensional information on the function of the whole genome. Rather than treating intergene correlation as a nuisance to the traditional gene selection procedures which are essentially univariate, our method utilizes the rich information contained in the correlation as a new selection criterion. It can provide additional useful candidate genes for the biologists.

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Citations

Jul 4, 2006·NeuroRx : the Journal of the American Society for Experimental NeuroTherapeutics·Anthony AlmudevarAndrei Y Yakovlev
Dec 10, 2009·Bioinformatics·Rui HuGalina Glazko
Aug 16, 2011·Bioinformatics·Zhengyu OuyangDan Goldowitz
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Apr 23, 2008·EURASIP Journal on Bioinformatics & Systems Biology·Yuanhui XiaoAndrei Yakovlev
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