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| Página principal > Artículos > Artículos publicados > Identification of genomic regions associated with fatty acid metabolism across blood, liver, backfat and muscle in pigs |
(Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments) (Centre de Recerca en Agrigenòmica) (Institut de Recerca i Tecnologia Agroalimentàries) (Institut de Recerca i Tecnologia Agroalimentàries) (Centre de Recerca en Agrigenòmica) (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments) (Centre de Recerca en Agrigenòmica) (Institut de Recerca i Tecnologia Agroalimentàries) (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
| Fecha: | 2024 |
| Resumen: | Background: The composition and distribution of fatty acids (FA) are important factors determining the quality, flavor, and nutrient value of meat. In addition, FAs synthesized in the body participate in energy metabolism and are involved in different regulatory pathways in the form of signaling molecules or by acting as agonist or antagonist ligands of different nuclear receptors. Finally, synthesis and catabolism of FAs affect adaptive immunity by regulating lymphocyte metabolism. The present study performed genome-wide association studies using FA profiles of blood, liver, backfat and muscle from 432 commercial Duroc pigs. Results: Twenty-five genomic regions located on 15 Sus scrofa chromosomes (SSC) were detected. Annotation of the quantitative trait locus (QTL) regions identified 49 lipid metabolism-related candidate genes. Among these QTLs, four were identified in more than one tissue. The ratio of C20:4n-6/C20:3n-6 was associated with the region on SSC2 at 7. 56-14. 26 Mb for backfat, liver, and muscle. Members of the fatty acid desaturase gene cluster (FADS1, FADS2, and FADS3) are the most promising candidate genes in this region. Two QTL regions on SSC14 (103. 81-115. 64 Mb and 100. 91-128. 14 Mb) were identified for FA desaturation in backfat and muscle. In addition, two separate regions on SSC9 at 0 - 14. 55 Mb and on SSC12 at 0-1. 91 Mb were both associated with the same multiple FA traits for backfat, with candidate genes involved in de novo FA synthesis and triacylglycerol (TAG) metabolism, such as DGAT2 and FASN. The ratio C20:0/C18:0 was associated with the region on SSC5 at 64. 84-78. 32 Mb for backfat. Furthermore, the association of the C16:0 content with the region at 118. 92-123. 95 Mb on SSC4 was blood specific. Finally, candidate genes involved in de novo lipogenesis regulate T cell differentiation and promote the generation of palmitoleate, an adipokine that alleviates inflammation. Conclusions: Several SNPs and candidate genes were associated with lipid metabolism in blood, liver, backfat, and muscle. These results contribute to elucidating the molecular mechanisms implicated in the determination of the FA profile in different pig tissues and can be useful in selection programs that aim to improve health and energy metabolism in pigs. |
| Ayudas: | Agencia Estatal de Investigación PID2020-112677RB-C21 Agencia Estatal de Investigación PID2020-112677RB-C22 European Commission 817998 Agencia Estatal de Investigación CEX2019-000902-S Agència de Gestió d'Ajuts Universitaris i de Recerca 2020/FI_B_00225 Agencia Estatal de Investigación PRE2018-085350 |
| Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.  |
| Lengua: | Anglès |
| Documento: | Article ; recerca ; Versió publicada |
| Publicado en: | Genetics, selection, evolution, Vol. 56 (September 2024) , art. 66, ISSN 1297-9686 |
