Open AccessMethylation quantitative trait locus analysis of chronic postsurgical pain uncovers epigenetic mediators of genetic risk
Author(s) -
Vidya Chidambaran,
Xue Zhang,
Valentina Pilipenko,
Chen Xiaoting,
Benjamin Wronowski,
Kristie J Geisler,
Lisa J. Martin,
Artem Barski,
Matthew T. Weirauch,
Hong Ji
Publication year - 2021
Publication title -
epigenomics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.265
H-Index - 60
eISSN - 1750-1911
pISSN - 1750-192X
DOI - 10.2217/epi-2020-0424
Subject(s) - dna methylation , epigenetics , biology , single nucleotide polymorphism , methylation , genetics , genome wide association study , quantitative trait locus , expression quantitative trait loci , dna , genotype , gene , gene expression
Background: Overlap of pathways enriched by single nucleotide polymorphisms and DNA-methylation underlying chronic postsurgical pain (CPSP), prompted pilot study of CPSP-associated methylation quantitative trait loci (meQTL). Materials & methods: Children undergoing spine-fusion were recruited prospectively. Logistic-regression for genome- and epigenome-wide CPSP association and DNA-methylation-single nucleotide polymorphism association/mediation analyses to identify meQTLs were followed by functional genomics analyses. Results: CPSP (n = 20/58) and non-CPSP groups differed in pain-measures. Of 2753 meQTLs, DNA-methylation at 127 cytosine-guanine dinucleotides mediated association of 470 meQTLs with CPSP (p < 0.05). At PARK16 locus, CPSP risk meQTLs were associated with decreased DNA-methylation at RAB7L1 and increased DNA-methylation at PM20D1. Corresponding RAB7L1/PM20D1 blood eQTLs (GTEx) and cytosine-guanine dinucleotide-loci enrichment for histone marks, transcription factor binding sites and ATAC-seq peaks suggest altered transcription factor-binding. Conclusion: CPSP-associated meQTLs indicate epigenetic mechanisms mediate genetic risk. Clinical trial registration: NCT01839461, NCT01731873 (ClinicalTrials.gov).