Modeling microRNA-driven post-transcriptional regulation using exon-intron split analysis in pigs
Mármol-Sánchez, Emilio (Centre de Recerca en Agrigenòmica)
Cirera, Susanna (University of Copenhagen. Department of Veterinary and Animal Sciences)
Zingaretti, Laura M. (Universidad Nacional de Villa María)
Jacobsen, Mette Juul (University of Copenhagen. Department of Veterinary and Animal Sciences)
Ramayo-Caldas, Yuliaxis (Institut de Recerca i Tecnologia Agroalimentàries)
Jørgensen, Claus B. (University of Copenhagen. Department of Veterinary and Animal Sciences)
Fredholm, Merete (University of Copenhagen. Department of Veterinary and Animal Sciences)
Cardoso, Tainã Figueiredo (Institut de Recerca i Tecnologia Agroalimentàries)
Quintanilla, Raquel (Institut de Recerca i Tecnologia Agroalimentàries)
Amills i Eras, Marcel (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)

Data:	2022
Resum:	The contribution of microRNAs (miRNAs) to mRNA post-transcriptional regulation has often been explored by the post hoc selection of downregulated genes and determining whether they harbor binding sites for miRNAs of interest. This approach, however, does not discriminate whether these mRNAs are also downregulated at the transcriptional level. Here, we have characterized the transcriptional and post-transcriptional changes in mRNA expression in two porcine tissues: gluteus medius muscle of fasted and fed Duroc gilts and adipose tissue of lean and obese Duroc-Göttingen minipigs. Exon-intron split analysis of RNA-seq data allowed us to identify downregulated mRNAs with high post-transcriptional signals in fed or obese states, and we assessed whether they harbor binding sites for upregulated miRNAs in any of these two physiological states. We found 26 downregulated mRNAs with high post-transcriptional signals in the muscle of fed gilts and 21 of these were predicted targets of miRNAs upregulated in fed pigs. For adipose tissue, 44 downregulated mRNAs in obese minipigs displayed high post-transcriptional signals, and 25 of these were predicted targets of miRNAs upregulated in the obese state. These results suggest that the contribution of miRNAs to mRNA repression is more prominent in the skeletal muscle system. Finally, we identified several genes that may play relevant roles in the energy homeostasis of the pig skeletal muscle (DKK2 and PDK4) and adipose (SESN3 and ESRRG) tissues. By differentiating transcriptional from post-transcriptional changes in mRNA expression, exon-intron split analysis provides a valuable view of the regulation of gene expression, complementary to canonical differential expression analyses.
Ajuts:	Ministerio de Economía y Competitividad AGL2013-48742-C2-1-R Ministerio de Economía y Competitividad AGL2013-48742-C2-2-R Ministerio de Educación, Cultura y Deporte FPU15/01733 Ministerio de Ciencia e Innovación RYC2019-027244-I Ministerio de Economía y Competitividad CEX2019-000902-S
Nota:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Exon-intron split analysis ; MicroRNA ; Pigs ; Energy homeostasis
Publicat a:	Animal Genetics, Vol. 53, Issue 5 (October 2022) , p. 613-626, ISSN 1365-2052

DOI: 10.1111/age.13238
PMID: 35811409

Postprint 46 p, 1.5 MB

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