Expresión génica en células de granulosa bovinas de folículos en crecimiento
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Objetivo. Comparar la expresión génica en células de granulosa de folículos en crecimiento en dos diferentes especies de bovinos (búfalos y vacas). Materiales y métodos. El RNA obtenido de las células de granulosa de 10 vacas y búfalas vacías fue secuenciado con Novaseq y se analizó la expresión génica diferencial usando EdgeR en Bioconductor y su función de acuerdo con los términos de ontología génica Resultados. El análisis de expresión diferencial mostró grandes diferencias entre las especies, fundamentalmente, la poca participación de los genes asociados a los fenómenos reproductivos del desarrollo folicular, poniendo de manifiesto la importancia del control paracrino del ovario. Se encontró que, entre búfalos y vacunos, no hay correspondencia en la expresión génica de los estados fisiológicos evaluados y aunque se pudieron identificar 6137 genes que tienen expresión diferencial entre las dos especies, no se encontró significancia en genes asociados directamente sobre el desarrollo folicular. Conclusiones. Cada especie tiene su forma de realizar el mismo proceso, aunque son evidentes las diferencias en la expresión de genes asociados a la fosforilación oxidativa. Se requieren nuevas formas de analizar los resultados para poder entender el significado biológico de los hallazgos.
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