Abstract

Co-expression analysis is widely used to predict gene function and to identify functionally related gene sets. However, co-expression analysis using human cancer transcriptomic data is confounded by somatic copy number alterations (SCNA), which produce co-expression signatures based on physical proximity rather than biological function. To better understand gene–gene co-expression based on biological regulation but not SCNA, we describe a method termed “Genomic Regression Analysis of Coordinated Expression” (GRACE) to adjust for the effect of SCNA in co-expression analysis. The results from analyses of TCGA, CCLE, and NCI60 data sets show that GRACE can improve our understanding of how a transcriptional network is re-wired in cancer. A user-friendly web database populated with data sets from The Cancer Genome Atlas (TCGA) is provided to allow customized query.

Details

Title
Genomic regression analysis of coordinated expression
Author
Cai, Ling 1 ; Li, Qiwei 2 ; Du, Yi 3 ; Yun, Jonghyun 4 ; Xie, Yang 2 ; DeBerardinis, Ralph J 5 ; Xiao, Guanghua 2 

 Children’s Medical Center Research Institute at UT Southwestern Medical Center, Dallas, TX, USA; Quantitative Biomedical Research Center at UT Southwestern Medical Center, Dallas, TX, USA 
 Quantitative Biomedical Research Center at UT Southwestern Medical Center, Dallas, TX, USA 
 Department of Bioinformatics at UT Southwestern Medical Center, Dallas, TX, USA 
 Department of Mathematics at University of Texas at Arlington, Arlington, TX, USA 
 Children’s Medical Center Research Institute at UT Southwestern Medical Center, Dallas, TX, USA 
Pages
1-10
Publication year
2017
Publication date
Dec 2017
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
1983424958
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.