Dissection of genetic factors modulating fetal growth in cattle indicates a substantial role of the non-SMC condensin I complex, subunit G (NCAPG) gene.
The increasing evidence of fetal developmental effects on postnatal life, the still unknown fetal growth mechanisms impairing offspring generated by somatic nuclear transfer techniques, and the impact on stillbirth and dystocia in conventional reproduction have generated increasing attention toward mammalian fetal growth. We identified a highly significant quantitative trait locus (QTL) affecting fetal growth on bovine chromosome 6 in a specific resource population, which was set up by consistent use of embryo transfer and foster mothers and, thus, enabled dissection of fetal-specific genetic components of fetal growth. Merging our data with results from other cattle populations differing in historical and geographical origin and with comparative data from human whole-genome association mapping suggests that a nonsynonymous polymorphism in the non-SMC condensin I complex, subunit G (NCAPG) gene, NCAPG c.1326T>G, is the potential cause of the identified QTL resulting in divergent bovine fetal growth. NCAPG gene expression data in fetal placentomes with different NCAPG c.1326T>G genotypes, which are in line with recent results about differential NCAPG expression in placentomes from studies on assisted reproduction techniques, indicate that the NCAPG locus may give valuable information on the specific mechanisms regulating fetal growth in mammals.
Eberlein
Annett
A
Research Unit Molecular Biology, Research Institute for the Biology of Farm Animals, 18196 Dummerstorf, Germany.
Takasuga
Akiko
A
Setoguchi
Kouji
K
Pfuhl
Ralf
R
Flisikowski
Krzysztof
K
Fries
Ruedi
R
Klopp
Norman
N
Fürbass
Rainer
R
Weikard
Rosemarie
R
Kühn
Christa
C
D000465:Algorithms; D000818:Animals; D000831:Animals, Newborn; D002417:Cattle / Q000196:embryology / Q000235:genetics*; D018797:Cell Cycle Proteins / Q000235:genetics*; D002874:Chromosome Mapping / Q000379:methods; D005260:Female; D047109:Fetal Development / Q000235:genetics*; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D008297:Male; D008957:Models, Genetic; D020641:Polymorphism, Single Nucleotide; D011247:Pregnancy; D040641:Quantitative Trait Loci / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction
D018797:Cell Cycle Proteins