Postnatal transcription profile and polymorphism of the ADIPOR1 gene in five pig breeds
2010
Stachowiak, M. | Flisikowski, K. | Szydlowski, M. | Fries, R. | Switonski, M.
As a result of its role in energy homeostasis regulation, the ADIPOR1 gene is a candidate for fat deposition, an important production trait, in the pig. The aim of the study was to conduct a comparative analysis of the ADIPOR1 postnatal transcript level, in order to establish its promoter and 5′UTR sequences and to search the gene for polymorphisms. The transcription level was examined in longissimus dorsi and semimembranosus muscles collected from 180 pigs at 60-210 days of age, representing five pig breeds: Duroc, Polish Large White, Polish Landrace, Pietrain and Pulawska. We calculated highly significant breed by age by muscle interaction (P < 0.0001) and breed by muscle interactions (P < 0.01). The 5′UTR and promoter region of the porcine ADIPOR1 gene were amplified for the first time and their sequences were deposited in the GenBank database. In total, 21 novel and two previously described polymorphisms were found in the ADIPOR1 promoter, coding, intronic, 5′ and 3′ untranslated regions. The only SNP detected in the coding region was a synonymous substitution. Two polymorphisms in 3′UTR (c.*129A>C and c.*536A>G) showed no significant effect on the transcript level. Our results showed a high polymorphism of the ADIPOR1 and a complexity in its transcription level in the studied muscles. This complexity indicates that conclusions based on such studies should be carefully gradated.
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