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Gene. 2013 Apr 1;517(2):224-9. doi: 10.1016/j.gene.2012.08.015. Epub 2013 Jan 3.

Genetic control of primary microRNA insight into cis- and trans-regulatory variations by RNA-seq.

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  • 1Center for Biomedical Informatics, School of Computer Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China.

Abstract

To search for genetic regulators influencing miRNA transcript abundance, we performed a genome-wide association study (GWAS) to identify quantitative trait loci associated with primary miRNA transcript abundance (pri-miQTL) using genotype data from HapMap CEU phased data. We detected robust expression for 150 pri-miRNAs out of 1523 interrogated using RNA-seq. We have identified some pri-miRNAs that showed significant evidence for cis- (34%) and trans-pri-miQTLs (3%). Furthermore, we observed that multiple cis-pri-miQTLs, showed allele-specific expression associated with single pri-miRNA expression. Interestingly, a cis-regulatory variation influenced the expression levels of two pri-miRNAs that expressed identical mature sequences. We also observed that a single trans-regulatory variation was associated with multiple unrelated pri-miRNAs: rs292253 was associated with the expression of hsa-mir-3181, hsa-mir-3665 and hsa-mir-762. These findings revealed that the expression of pri-miRNA detected by RNA-seq can be used to identify pri-miQTLs, as an alternative method to dissect the genetic control mechanisms governing pri-miRNA expression.

Copyright © 2012 Elsevier B.V. All rights reserved.

PMID:
23291411
[PubMed - indexed for MEDLINE]
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