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International Journal of Genomics
Volume 2017 (2017), Article ID 6202567, 14 pages
https://doi.org/10.1155/2017/6202567
Research Article

Common Expression Quantitative Trait Loci Shared by Histone Genes

Department of Bioinformatics and Life Science, Soongsil University, Seoul, Republic of Korea

Correspondence should be addressed to Chaeyoung Lee

Received 29 May 2017; Revised 26 July 2017; Accepted 2 August 2017; Published 27 August 2017

Academic Editor: Marco Gerdol

Copyright © 2017 Hanseol Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A genome-wide association study (GWAS) was conducted to examine expression quantitative trait loci (eQTLs) for histone genes. We examined common eQTLs for multiple histone genes in 373 European lymphoblastoid cell lines (LCLs). A linear regression model was employed to identify single-nucleotide polymorphisms (SNPs) associated with expression of the histone genes, and the number of eQTLs was determined by linkage disequilibrium analysis. Additional associations of the identified eQTLs with other genes were also examined. We identified 31 eQTLs for 29 histone genes through genome-wide analysis using 29 histone genes (). Among them, 12 eQTLs were associated with the expression of multiple histone genes. Transcriptome-wide association analysis using the identified eQTLs showed their associations with additional 80 genes (). In particular, expression of RPPH1, SCARNA2, and SCARNA7 genes was associated with 26, 25, and 23 eQTLs, respectively. This study suggests that histone genes shared 12 common eQTLs that might regulate cell cycle-dependent transcription of histone and other genes. Further investigations are needed to elucidate the transcriptional mechanisms of these genes.