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Papel dual de APC/C-Cdh1 en obesidad

Authors: Rodríguez, Rubén; García-Higuera, Irene; Moreno, Sergio;

Papel dual de APC/C-Cdh1 en obesidad

Abstract

Nuestro grupo lleva años estudiando el papel biológico de Cdh1, una proteína activadora del Complejo Promotor de la Anafase, o ciclosoma (APC/C), utilizando para ello modelos murinos de inactivación génica. El complejo APC/C-Cdh1 dirige, durante la fase G1 del ciclo de división celular, la poliubiquitinación de ciclinas y otros reguladores de ciclo, para su posterior degradación por el proteasoma. Nuestro trabajo ha desvelado que APC/C-Cdh1 promueve diversos procesos de diferenciación, como neurogénesis o eritropoyesis. Sin embargo, nada se sabe acerca de su posible papel en adipogénesis, un proceso de diferenciación complejo e inusual, del que aún queda mucho por descifrar. Realizando ensayos de diferenciación in vitro, con MEF y preadipocitos primarios, hemos comprobado que la ausencia de Cdh1 provoca un aumento significativo de la adipogénesis, y estimula tanto la expansión clonal de los preadipocitos, como su diferenciación terminal. Por otro lado, también hemos observado que los adipocitos diferenciados carentes de Cdh1 presentan ciertas características de grasa marrón y expresan niveles incrementados de UCP1 tras la inducción del proceso de browning. In vivo, la deleción de Cdh1 restringida a tejido adiposo da lugar a ratones con depósitos de grasa blanca y marrón de mayor tamaño, lo que confirma que APC/C-Cdh1 ejerce una sorprendente y novedosa actividad inhibitoria en la formación del tejido adiposo. En conjunto nuestros resultados apuntan a un posible papel dual del complejo APC/C-Cdh1 en obesidad, modulando la formación de los depósitos de grasa blanca y marrón.

Resumen del póster presentado al XXXIX Congreso de la Sociedad Española de Bioquímica y Biología Molecular, celebrado en Salamanca del 5 al 8 de septiembre de 2016.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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