In vitro maturation in the presence of Leukemia Inhibitory Factor modulates gene and miRNA expression in bovine oocytes and embryos
Vendrell-Flotats, Meritxell (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
Garcia Martinez, Tania (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Martínez-Rodero, Iris (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
López Béjar, Manel (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
LaMarre, Jonathan (Ontario Veterinary College, University of Guelph. Department of Biomedical Sciences)
Yeste Oliveras, Marc (Universitat de Girona. Institut de Tecnologia Agroalimentària)
Mogas Amorós, Teresa (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)

Data:	2020
Resum:	Members of the interleukin-6 (IL-6) family of cytokines are important for reproductive function that are mediated through changes in gene and miRNA expression. Herein, we characterized the expression of miR-21, miR-155, miR-34c and miR-146a in bovine oocytes and cumulus cells during in vitro maturation (IVM) with leukemia inhibitory factor (LIF), IL-6 and IL-11 or unsupplemented controls. LIF-exposed COCs showed higher expression of miR-21 and miR-155 in oocytes, whereas miR-146a expression was increased in oocytes matured with IL-6 and IL-11. In cumulus cells, miR-155 expression was elevated by all treatments while only LIF increased miR-21 expression. Based on these results, we next examined how LIF exposure during IVM affected oocyte competence, through IVF and the expression of specific genes in GV- and MII-oocytes, in 2- and 8-cell embryos, and in Day 8-blastocysts. LIF supplementation did not affect cleavage rate, blastocyst yield or several other developmental parameters, but did increase hatching rate. LIF suppressed DPPA3, ZAR1 and NPM2 expression in 2 cell- and/or 8-cell embryos. LIF increased the expression of KAT2A and HSPA1A in MII-oocytes, and that of HDAC1, KAT2A and HSP90AA1 and the BAX:BCL2L1 ratio in 2-cell embryos. In contrast, HDAC1, KAT2A and HSP90AA1 expression and BAX:BCL2L1 ratio was lower in 8-cell embryos derived from LIF oocytes. IVM with LIF also increased the expression of DNMT3A, HSPA1A and HSP90AA1 in blastocysts. In conclusion, supplementation with LIF during IVM was consistently associated with changes in the relative abundance of transcripts in mature bovine oocytes and in specific embryo developmental stages.
Ajuts:	Ministerio de Ciencia e Innovación AGL2016-79802-P Ministerio de Ciencia e Innovación CTQ2014-59632-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017-SGR-1229
Nota:	Altres ajuts: OECD Co-operative Research Programme: Biological Resource Management for Sustainable Agricultural Systems ; Natural Sciences and Engineering Research Council of Canada
Drets:	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.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Animal breeding ; Gene expression ; Gene regulation
Publicat a:	Scientific reports, Vol. 10 (october 2020) , ISSN 2045-2322

DOI: 10.1038/s41598-020-74961-6
PMID: 33082423

15 p, 1.7 MB

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