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Expresión génica del factor de crecimiento BMP15, GDF9, FGF2 y sus receptores en células foliculares bovinas

Gene expression of growth factor BMP15, GDF9, FGF2 and their receptors in bovine follicular cells



Cómo citar
Pablo S, María S., María G., Olegario, Santiago, & Gustavo A. (2018). Expresión génica del factor de crecimiento BMP15, GDF9, FGF2 y sus receptores en células foliculares bovinas. Revista MVZ Córdoba, 23(3), 6778-6787. https://doi.org/10.21897/rmvz.1367

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Introducción. El crecimiento y la maduración folicular implican una serie de transformaciones de diversos componentes del folículo, como el ovocito, las células de la granulosa y de la teca. Varios factores de crecimiento, incluyendo factor de crecimiento de diferenciación 9 (GDF9), proteína morfogénica ósea 15 (BMP15) y factor de crecimiento de fibroblastos básico (FGF2) son importantes para el desarrollo folicular y maduración de ovocitos, por su capacidad de aumentar la proliferación de las células de la granulosa, teca y el estroma ovárico. Objetivo. Evaluar la expresión de los factores de crecimiento GDF9, BMP15, FGF2 y sus principales receptores: el receptor 1 del factor de crecimiento transformante beta (TGFβ-R1), el receptor de la proteína morfogénica del hueso tipo IB (BMPR-IB) y el receptor del factor de crecimiento fibroblástico 2 (FGFR2) en células foliculares bovinas. Materiales y métodos. Se realizó la extracción de ARN total de pooles de ovocitos (OOs) y células del cumulus (CCs) de complejos cumulus-ovocito (COCs) y del pellet de células foliculares (PCs) provenientes de 70 ovarios obtenidos de 96 vaquillonas para carne, colectados en un frigorífico local. Los patrones de expresión de los factores de crecimiento y sus receptores en las células foliculares bovinas fueron evaluados por retro-transcripción seguida de la reacción en cadena de la polimerasa (RT-PCR). Resultados. La presencia de los transcriptos de ARNm de los genes GDF9, BMP15, FGF2, TGFβ-R1, BMPR-IB y FGFR2 fue detectada por RT-PCR en todas las células estudiadas. Es la primera vez que se reporta en ovocitos bovinos la expresión de los receptores TGFβ-R1 y BMPR-IB. Conclusiones. La presencia de transcriptos de factores de crecimiento y sus receptores en las células estudiadas, indica que estos factores podrían actuar como reguladores paracrinos y autocrinos de la foliculogénesis.


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