<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Imprinted loci are a subset of genes expressed only from one parental allele. Guanine nucleotide binding protein (GNAS complex locus) produces a few different proteins and noncoding RNAs. It is imprinted in mice and humans, while in pigs imprinting status of only one of them - NESP55 (neuroendocrine secretory protein-55) has been established. In the present study we aimed to establish imprinting status of the other two GNAS transcripts. We collected a panel of tissues (muscle, liver, kidney cortex, heart, fat, ovary, brain, blood) from the animals (aged 40-210 days) heterozygous in rs#333005482 polymorphism. We performed several RT -PCRs (Reverse Transcription Polymerase Chain Reactions) with variant specific primers and sequenced the cDNA products obtained. We observed only paternal allele in all tissues at all developmental stages after sequencing with primers specific to variant 8 of GNAS gene and both alleles when sequencing with primers specific to variant 6. Our results show for the first time that, in pigs, GNAS complex locus produces biallelically expressed and paternally expressed transcripts, in the same way as previously demonstrated in mice and humans</p></abstract>

Imprinted loci are a subset of genes expressed only from one parental allele. Guanine nucleotide binding protein (GNAS complex locus) produces a few different proteins and noncoding RNAs. It is imprinted in mice and humans, while in pigs imprinting status of only one of them - NESP55 (neuroendocrine secretory protein-55) has been established. In the present study we aimed to establish imprinting status of the other two GNAS transcripts. We collected a panel of tissues (muscle, liver, kidney cortex, heart, fat, ovary, brain, blood) from the animals (aged 40-210 days) heterozygous in rs#333005482 polymorphism. We performed several RT -PCRs (Reverse Transcription Polymerase Chain Reactions) with variant specific primers and sequenced the cDNA products obtained. We observed only paternal allele in all tissues at all developmental stages after sequencing with primers specific to variant 8 of GNAS gene and both alleles when sequencing with primers specific to variant 6. Our results show for the first time that, in pigs, GNAS complex locus produces biallelically expressed and paternally expressed transcripts, in the same way as previously demonstrated in mice and humans

Guanine Nucleotide Binding Protein (GNAS Complex Locus) Gene Produces Biallelically Expressed and Paternally Expressed Transcripts in Pigs

Department of Animal Cytogenetics and Molecular Genetics, National Research Institute of Animal Production, 32-083 Balice n. Kraków, Poland

Annals of Animal Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Imprinted loci are a subset of genes expressed only from one parental allele. Guanine nucleotide binding protein (GNAS complex locus) produces a few different...

Guanine Nucleotide Binding Protein (GNAS Complex Locus) Gene Produces Biallelically Expressed and Paternally Expressed Transcripts in Pigs

Article Category: Animal Genetics and Breeding

Published Online: Oct 29, 2015

Page range: 867 - 877

Received: Jan 09, 2015

Accepted: Apr 02, 2015

DOI: https://doi.org/10.1515/aoas-2015-0030

Keywords
GNAS, imprinting, pigs, NESP55

© by Maria Oczkowicz

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Guanine Nucleotide Binding Protein (GNAS Complex Locus) Gene Produces Biallelically Expressed and Paternally Expressed Transcripts in Pigs

Article Category: Animal Genetics and Breeding

Published Online: Oct 29, 2015

Page range: 867 - 877

Received: Jan 09, 2015

Accepted: Apr 02, 2015

DOI: https://doi.org/10.1515/aoas-2015-0030

KeywordsGNAS, imprinting, pigs, NESP55

© by Maria Oczkowicz

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
GNAS, imprinting, pigs, NESP55