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Título: | RNA-sequencing reveals genes linked with oocyte developmental potential in bovine cumulus cells |
Autor: | Martínez-Moro, Álvaro; González-Brusi, Leopoldo; Lamas Toranzo, Ismael; O'Callaghan, Elena; Esteve-Codina, Anna; Lonergan, P.; Bermejo Álvarez, Pablo | Palabras clave: | Granulosa cell In vitro maturation Integrin Oocyte quality Transcription |
Fecha de publicación: | 27-jun-2022 | Editor: | John Wiley & Sons | Citación: | Molecular Reproduction and Development 89: 399-412 (2022) | Resumen: | Cumulus cells provide an interesting biological material to perform analyses to understand the molecular clues determining oocyte competence. The objective of this study was to analyze the transcriptional differences between cumulus cells from oocytes exhibiting different developmental potentials following individual in vitro embryo production by RNA-seq. Cumulus cells were allocated into three groups according to the developmental potential of the oocyte following fertilization: (1) oocytes developing to blastocysts (Bl+), (2) oocytes cleaving but arresting development before the blastocyst stage (Bl-), and (3) oocytes not cleaving (Cl-). RNAseq was performed on 4 (Cl-) or 5 samples (Bl+ and Bl-) of cumulus cells pooled from 10 cumulus-oocyte complexes per group. A total of 49, 50, and 18 differentially expressed genes (DEGs) were detected in the comparisons Bl+ versus Bl-, Bl+ versus Cl- and Bl- versus Cl-, respectively, showing a fold change greater than 1.5 at an adjusted p value <0.05. Focussing on DEGs in cumulus cells from Bl+ group, 10 DEGs were common to both comparisons (10/49 from Bl+ vs. Bl-, 10/50 from Bl+ vs. Cl-). These DEGs correspond to 6 upregulated genes (HBE1, ITGA1, PAPPA, AKAP12, ITGA5, and SLC1A4), and 4 downregulated genes (GSTA1, PSMB8, FMOD, and SFRP4) in Bl+ compared to the other groups, from which 7 were validated by quantitative PCR (HBE1, ITGA1, PAPPA, AKAP12, ITGA5, PSMB8 and SFRP4). These genes are involved in critical biological functions such as integrin-mediated cell adhesion, oxygen availability, IGF and Wnt signaling or PKA pathway, highlighting specific biological processes altered in incompetent in vitro maturation oocytes. | URI: | http://hdl.handle.net/10261/305099 | DOI: | 10.1002/mrd.23631 | ISSN: | 1040-452X |
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