EFECTO DEL FACTOR DE CRECIMIENTO FIBROBLÁSTICO DOS EN LA REDUCCIÓN DE LA SENESCENCIA EN CÉLULAS MADRE MESENQUIMALES AISLADAS DE GELATINA DE WHARTON
FIBROBLASTIC GROWTH FACTOR TWO REDUCES THE SENESCENT EFFECT ON MESENCHYMAL STEM CELL ISOLATED FROM WHARTON´S JELLY.
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Las células madre mesenquimales han generado interés en la ingeniería de tejidos, debido a sus propiedades proliferativas y capacidad de reparación de tejidos, sin embargo, para un trasplante exitoso, es necesario aumentar el número de células mediante un cultivo in-vitro. Durante este proceso la capacidad proliferativa disminuye, provocando cambios en la morfología y funcionalidad celular y afectando la viabilidad del cultivo, este estado se conoce como senescencia celular y como posibles causales, se ha considerado el estrés oxidativo y la falta de factores de crecimiento. Con el objetivo de evaluar el efecto de FGF-2 sobre la senescencia de un cultivo de células madre mesenquimales aisladas de gelatina de Wharton y su papel en la regulación del estrés oxidativo se añadieron dosis de 3,5 y 7,5 ng de FGF-2 al cultivo. Durante los pasajes 5 y 7, se estimó tanto la senescencia celular como la presencia de ROS (especies reactivas de oxígeno). Como resultado se obtuvo en el pasaje 5, una diferencia significativa del 99,5% entre el control (+) con respecto a los tratamientos con FGF-2, sin embargo, en el pasaje 7 se observó un aumento en la producción de la enzima β-galactosidasa y cambios morfológicos, confirmando un estado senescente en el cultivo en todos los tratamientos evaluados. En conclusión, las dosis utilizadas en este estudio contribuyeron positivamente a disminuir el proceso senescente en el cultivo celular, además se determinó, que el FGF-2 puede prolongar el tiempo de cultivo, retardando parcialmente la concentración de especies reactivas de oxígeno.
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