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Fine-mapping quantitative trait loci affecting murine external ear tissue regeneration in the LG/J by SM/J advanced intercross line
Journal article   Open access   Peer reviewed

Fine-mapping quantitative trait loci affecting murine external ear tissue regeneration in the LG/J by SM/J advanced intercross line

J M Cheverud, H A Lawson, K Bouckaert, A V Kossenkov, L C Showe, L Cort, E P Blankenhorn, K Bedelbaeva, D Gourevitch, Y Zhang, …
Heredity, v 112(5), pp 508-518
May 2014
PMID: 24569637
url
https://doi.org/10.1038/hdy.2013.133View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open

Abstract

Animals Chromosome Mapping - methods Crosses, Genetic Ear, External - physiology Genotype Hypoxia-Inducible Factor 1, alpha Subunit - genetics Hypoxia-Inducible Factor 1, alpha Subunit - metabolism Immunohistochemistry Kinesin - genetics Kinesin - metabolism Mice Mice, Inbred Strains Oligonucleotide Array Sequence Analysis Polymorphism, Single Nucleotide Quantitative Trait Loci - genetics Regeneration - genetics Transcriptome - genetics Wnt3A Protein - genetics Wnt3A Protein - metabolism Wound Healing - genetics
External ear hole closure in LG/J mice represents a model of regenerative response. It is accompanied by the formation of a blastema-like structure and the re-growth of multiple tissues, including cartilage. The ability to regenerate tissue is heritable. An F34 advanced intercross line of mice (Wustl:LG,SM-G34) was generated to identify genomic loci involved in ear hole closure over a 30-day healing period. We mapped 19 quantitative trait loci (QTL) for ear hole closure. Individual gene effects are relatively small (0.08 mm), and most loci have co-dominant effects with phenotypically intermediate heterozygotes. QTL support regions were limited to a median size of 2 Mb containing a median of 19 genes. Positional candidate genes were evaluated using differential transcript expression between LG/J and SM/J healing tissue, function analysis and bioinformatic analysis of single-nucleotide polymorphisms in and around positional candidate genes of interest. Analysis of the set of 34 positional candidate genes and those displaying expression differences revealed over-representation of genes involved in cell cycle regulation/DNA damage, cell migration and adhesion, developmentally related genes and metabolism. This indicates that the healing phenotype in LG/J mice involves multiple physiological mechanisms.

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Collaboration types
Domestic collaboration
Web of Science research areas
Ecology
Evolutionary Biology
Genetics & Heredity
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