Association between plasma metabolites and gene expression profiles in five porcine endocrine tissues
Yang, Bing (Centre de Recerca en Agrigenòmica)
Bassols Teixidó, Anna Maria, dir. (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular)
Saco Rodriguez, Yolanda (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular)
Perez-Enciso, Miguel (Centre de Recerca en Agrigenòmica)

Data:	2011
Resum:	Background: Endocrine tissues play a fundamental role in maintaining homeostasis of plasma metabolites such as non-esterified fatty acids and glucose, the levels of which reflect the energy balance or the health status of animals. However, the relationship between the transcriptome of endocrine tissues and plasma metabolites has been poorly studied. Methods: We determined the blood levels of 12 plasma metabolites in 27 pigs belonging to five breeds, each breed consisting of both females and males. The transcriptome of five endocrine tissues i. e. hypothalamus, adenohypophysis, thyroid gland, gonads and backfat tissues from 16 out of the 27 pigs was also determined. Sex and breed effects on the 12 plasma metabolites were investigated and associations between genes expressed in the five endocrine tissues and the 12 plasma metabolites measured were analyzed. A probeset was defined as a quantitative trait transcript (QTT) when its association with a particular metabolic trait achieved a nominal P value < 0. 01. Results: A larger than expected number of QTT was found for non-esterified fatty acids and alanine aminotransferase in at least two tissues. The associations were highly tissue-specific. The QTT within the tissues were divided into co-expression network modules enriched for genes in Kyoto Encyclopedia of Genes and Genomes or gene ontology categories that are related to the physiological functions of the corresponding tissues. We also explored a multi-tissue co-expression network using QTT for non-esterified fatty acids from the five tissues and found that a module, enriched in hypothalamus QTT, was positioned at the centre of the entire multi-tissue network. Conclusions: These results emphasize the relationships between endocrine tissues and plasma metabolites in terms of gene expression. Highly tissue-specific association patterns suggest that candidate genes or gene pathways should be investigated in the context of specific tissues.
Ajuts:	Ministerio de Ciencia e Innovación CSD2007-00036 Ministerio de Ciencia e Innovación AGL2007-65563-C02/GAN Ministerio de Ciencia e Innovación AGL2010-14822/GAN
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; Versió publicada
Publicat a:	Genetics, selection, evolution, Vol. 43, Núm. 28 (July 2011) , p. 1-12, ISSN 1297-9686

DOI: 10.1186/1297-9686-43-28
PMID: 21787428

12 p, 1.4 MB

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