Global analysis of the association between pig muscle fatty acid composition and gene expression using RNA-Seq

Author:

Valdés-Hernández Jesús,Ramayo-Caldas Yuliaxis,Passols Magí,Sebastià Cristina,Criado-Mesas Lourdes,Crespo-Piazuelo Daniel,Esteve-Codina Anna,Castelló Anna,Sánchez Armand,Folch Josep M.

Abstract

AbstractFatty acids (FAs) play an essential role as mediators of cell signaling and signal transduction, affecting metabolic homeostasis and determining meat quality in pigs. However, FAs are transformed by the action of several genes, such as those encoding desaturases and elongases of FAs in lipogenic tissues. The aim of the current work was to identify candidate genes, biological processes, and pathways involved in the modulation of intramuscular FA profile from longissimus dorsi muscle. FA profile by gas chromatography of methyl esters and gene expression by RNA-Seq were determined in 129 Iberian × Duroc backcrossed pigs. An association analysis between the muscle transcriptome and its FA profile was performed, followed by a concordance and functional analysis. Overall, a list of well-known (e.g., PLIN1, LEP, ELOVL6, SC5D, NCOA2, ACSL1, MDH1, LPL, LGALS12, TFRC, GOT1, and FBP1) and novel (e.g., TRARG1, TANK, ENSSSCG00000011196, and ENSSSCG00000038429) candidate genes was identified, either in association with specific or several FA traits. Likewise, several of these genes belong to biological processes and pathways linked to energy, lipid, and carbohydrate metabolism, which seem determinants in the modulation of FA compositions. This study can contribute to elucidate the complex relationship between gene expression and FA profile in pig muscle.

Funder

Agència de Gestió d'Ajuts Universitaris i de Recerca

Ramon y Cajal Post-doctoral Fellowship

Formación de Personal Investigador, FPI, Spain

Instituto de Salud Carlos III

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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