Haplotypes of the porcine peroxisome proliferator-activated receptor delta gene are associated with backfat thickness

2.50
Hdl Handle:
http://hdl.handle.net/10033/620730
Title:
Haplotypes of the porcine peroxisome proliferator-activated receptor delta gene are associated with backfat thickness
Authors:
Meidtner, Karina; Schwarzenbacher, Hermann; Scharfe, Maren; Severitt, Simone; Blöcker, Helmut; Fries, Ruedi
Abstract:
Abstract Background Peroxisome proliferator-activated receptor delta belongs to the nuclear receptor superfamily of ligand-inducible transcription factors. It is a key regulator of lipid metabolism. The peroxisome proliferator-activated receptor delta gene (PPARD) has been assigned to a region on porcine chromosome 7, which harbours a quantitative trait locus for backfat. Thus, PPARD is considered a functional and positional candidate gene for backfat thickness. The purpose of this study was to test this candidate gene hypothesis in a cross of breeds that were highly divergent in lipid deposition characteristics. Results Screening for genetic variation in porcine PPARD revealed only silent mutations. Nevertheless, significant associations between PPARD haplotypes and backfat thickness were observed in the F2 generation of the Mangalitsa × Piétrain cross as well as a commercial German Landrace population. Haplotype 5 is associated with increased backfat in F2 Mangalitsa × Piétrain pigs, whereas haplotype 4 is associated with lower backfat thickness in the German Landrace population. Haplotype 4 and 5 carry the same alleles at all but one SNP. Interestingly, the opposite effects of PPARD haplotypes 4 and 5 on backfat thickness are reflected by opposite effects of these two haplotypes on PPAR-δ mRNA levels. Haplotype 4 significantly increases PPAR-δ mRNA levels, whereas haplotype 5 decreases mRNA levels of PPAR-δ. Conclusion This study provides evidence for an association between PPARD and backfat thickness. The association is substantiated by mRNA quantification. Further studies are required to clarify, whether the observed associations are caused by PPARD or are the result of linkage disequilibrium with a causal variant in a neighbouring gene.
Citation:
BMC Genetics. 2009 Nov 30;10(1):76
Issue Date:
30-Nov-2009
URI:
http://dx.doi.org/10.1186/1471-2156-10-76; http://hdl.handle.net/10033/620730
Type:
Journal Article
Appears in Collections:
publications of the research group genomeanalytics (GMAK)

Full metadata record

DC FieldValue Language
dc.contributor.authorMeidtner, Karinaen
dc.contributor.authorSchwarzenbacher, Hermannen
dc.contributor.authorScharfe, Marenen
dc.contributor.authorSeveritt, Simoneen
dc.contributor.authorBlöcker, Helmuten
dc.contributor.authorFries, Ruedien
dc.date.accessioned2017-01-19T09:43:09Z-
dc.date.available2017-01-19T09:43:09Z-
dc.date.issued2009-11-30en
dc.identifier.citationBMC Genetics. 2009 Nov 30;10(1):76en
dc.identifier.urihttp://dx.doi.org/10.1186/1471-2156-10-76en
dc.identifier.urihttp://hdl.handle.net/10033/620730-
dc.description.abstractAbstract Background Peroxisome proliferator-activated receptor delta belongs to the nuclear receptor superfamily of ligand-inducible transcription factors. It is a key regulator of lipid metabolism. The peroxisome proliferator-activated receptor delta gene (PPARD) has been assigned to a region on porcine chromosome 7, which harbours a quantitative trait locus for backfat. Thus, PPARD is considered a functional and positional candidate gene for backfat thickness. The purpose of this study was to test this candidate gene hypothesis in a cross of breeds that were highly divergent in lipid deposition characteristics. Results Screening for genetic variation in porcine PPARD revealed only silent mutations. Nevertheless, significant associations between PPARD haplotypes and backfat thickness were observed in the F2 generation of the Mangalitsa × Piétrain cross as well as a commercial German Landrace population. Haplotype 5 is associated with increased backfat in F2 Mangalitsa × Piétrain pigs, whereas haplotype 4 is associated with lower backfat thickness in the German Landrace population. Haplotype 4 and 5 carry the same alleles at all but one SNP. Interestingly, the opposite effects of PPARD haplotypes 4 and 5 on backfat thickness are reflected by opposite effects of these two haplotypes on PPAR-δ mRNA levels. Haplotype 4 significantly increases PPAR-δ mRNA levels, whereas haplotype 5 decreases mRNA levels of PPAR-δ. Conclusion This study provides evidence for an association between PPARD and backfat thickness. The association is substantiated by mRNA quantification. Further studies are required to clarify, whether the observed associations are caused by PPARD or are the result of linkage disequilibrium with a causal variant in a neighbouring gene.en
dc.titleHaplotypes of the porcine peroxisome proliferator-activated receptor delta gene are associated with backfat thicknessen
dc.typeJournal Articleen
dc.language.rfc3066enen
dc.rights.holderMeidtner et al.en
dc.date.updated2015-09-04T08:29:54Zen
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