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Wei R, Yang F, Urban TJ, et al. Impact of the Interaction between 3'-UTR SNPs and microRNA on the Expression of Human Xenobiotic Metabolism Enzyme and Transporter Genes. Front Genet. 2012;3:248doi: 10.3389/fgene.2012.00248.
Wei, R., Yang, F., Urban, T. J., Li, L., Chalasani, N., Flockhart, D. A., & Liu, W. (2012). Impact of the Interaction between 3'-UTR SNPs and microRNA on the Expression of Human Xenobiotic Metabolism Enzyme and Transporter Genes. Frontiers in genetics, 3248. https://doi.org/10.3389/fgene.2012.00248
Wei, Rongrong, et al. "Impact of the Interaction between 3'-UTR SNPs and microRNA on the Expression of Human Xenobiotic Metabolism Enzyme and Transporter Genes." Frontiers in genetics vol. 3 (2012): 248. doi: https://doi.org/10.3389/fgene.2012.00248
Wei R, Yang F, Urban TJ, Li L, Chalasani N, Flockhart DA, Liu W. Impact of the Interaction between 3'-UTR SNPs and microRNA on the Expression of Human Xenobiotic Metabolism Enzyme and Transporter Genes. Front Genet. 2012 Nov 21;3:248. doi: 10.3389/fgene.2012.00248. eCollection 2012. PMID: 23181071; PMCID: PMC3502871.
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Front Genet. 2012 Nov 21;3:248. doi: 10.3389/fgene.2012.00248. eCollection 2012.

Impact of the Interaction between 3'-UTR SNPs and microRNA on the Expression of Human Xenobiotic Metabolism Enzyme and Transporter Genes.

Frontiers in genetics

Rongrong Wei, Fan Yang, Thomas J Urban, Lang Li, Naga Chalasani, David A Flockhart, Wanqing Liu

Affiliations

  1. Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University West Lafayette, IN, USA.

PMID: 23181071 PMCID: PMC3502871 DOI: 10.3389/fgene.2012.00248

Abstract

Genetic variation in the expression of human xenobiotic metabolism enzymes and transporters (XMETs) leads to inter-individual variability in metabolism of therapeutic agents as well as differed susceptibility to various diseases. Recent expression quantitative traits loci (eQTL) mapping in a few human cells/tissues have identified a number of single nucleotide polymorphisms (SNPs) significantly associated with mRNA expression of many XMET genes. These eQTLs are therefore important candidate markers for pharmacogenetic studies. However, questions remain about whether these SNPs are causative and in what mechanism these SNPs may function. Given the important role of microRNAs (miRs) in gene transcription regulation, we hypothesize that those eQTLs or their proxies in strong linkage disequilibrium (LD) altering miR targeting are likely causative SNPs affecting gene expression. The aim of this study is to identify eQTLs potentially regulating major XMETs via interference with miR targeting. To this end, we performed a genome-wide screening for eQTLs for 409 genes encoding major drug metabolism enzymes, transporters and transcription factors, in publically available eQTL datasets generated from the HapMap lymphoblastoid cell lines and human liver and brain tissue. As a result, 308 eQTLs significantly (p < 10(-5)) associated with mRNA expression of 101 genes were identified. We further identified 7,869 SNPs in strong LD (r(2) ≥ 0.8) with these eQTLs using the 1,000 Genome SNP data. Among these 8,177 SNPs, 27 are located in the 3'-UTR of 14 genes. Using two algorithms predicting miR-SNP interaction, we found that almost all these SNPs (26 out of 27) were predicted to create, abolish, or change the target site for miRs in both algorithms. Many of these miRs were also expressed in the same tissue that the eQTL were identified. Our study provides a strong rationale for continued investigation for the functions of these eQTLs in pharmacogenetic settings.

Keywords: 3′-UTR; eQTL; microRNA; pharmacogenetics; xenobiotic metabolism enzyme and transporter

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