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Front Genet. 2019 Nov 26;10:1215. doi: 10.3389/fgene.2019.01215. eCollection 2019.

Expression Quantitative Trait Loci in Equine Skeletal Muscle Reveals Heritable Variation in Metabolism and the Training Responsive Transcriptome.

Frontiers in genetics

Gabriella Farries, Kenneth Bryan, Charlotte L McGivney, Paul A McGettigan, Katie F Gough, John A Browne, David E MacHugh, Lisa Michelle Katz, Emmeline W Hill

Affiliations

  1. UCD School of Agriculture and Food Science, University College Dublin, Dublin, Ireland.
  2. UCD School of Veterinary Medicine, University College Dublin, Dublin, Ireland.
  3. UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland.
  4. Research and Development, Plusvital Ltd., Dublin, Ireland.

PMID: 31850069 PMCID: PMC6902038 DOI: 10.3389/fgene.2019.01215

Abstract

While over ten thousand genetic loci have been associated with phenotypic traits and inherited diseases in genome-wide association studies, in most cases only a relatively small proportion of the trait heritability is explained and biological mechanisms underpinning these traits have not been clearly identified. Expression quantitative trait loci (eQTL) are subsets of genomic loci shown experimentally to influence gene expression. Since gene expression is one of the primary determinants of phenotype, the identification of eQTL may reveal biologically relevant loci and provide functional links between genomic variants, gene expression and ultimately phenotype. Skeletal muscle (gluteus medius) gene expression was quantified by RNA-seq for 111 Thoroughbreds (47 male, 64 female) in race training at a single training establishment sampled at two time-points: at rest (

Copyright © 2019 Farries, Bryan, McGivney, McGettigan, Gough, Browne, MacHugh, Katz and Hill.

Keywords: RNA sequencing; aerobic metabolism; exercise; expression quantitative trait loci; gene expression; horse

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