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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
Published on: June 3, 2016
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La represión de E2F por C/EBPalpha es necesaria para la adipogénesis y la granulopoyesis in vivo
1Laboratory of Gene Therapy Research, 2100 Copenhagen Ø, Denmark.
Cell
|October 24, 2001
Resumen
El factor de transcripción CCAAT/proteína alfa de unión al potenciador (C/EBPalpha)
Área de la Ciencia:
- Biología molecular La biología molecular.
- La diferenciación celular es la diferenciación celular.
- Regulación genética La regulación genética.
Sus antecedentes:
- C/EBPalpha es un factor de transcripción clave para la diferenciación de los adipocitos y los granulocitos neutrófilos.
- Su papel en el control de la proliferación celular requiere una mayor comprensión mecánica.
Objetivo del estudio:
- Para investigar los mecanismos moleculares que subyacen a la función de C/EBPalpha.
- Determinar el papel de la represión E2F en la diferenciación mediada por C/EBPalpha y el control de la proliferación.
Principales métodos:
- Identificación de los mutantes C/EBPalpha defectuosos en la represión E2F.
- Ensayos in vitro para la proliferación celular y la diferenciación de los adipocitos.
- Mutagénesis dirigida en la línea germinal del ratón para evaluar la función in vivo.
Principales resultados:
- Los mutantes C/EBPalpha afectados en la represión de E2F mostraron defectos en la supresión de la proliferación e inducir la diferenciación de los adipocitos in vitro.
- Los ratones con alelos C/EBPalpha con deficiencia de represión E2F no pudieron diferenciar los adipocitos y los granulocitos in vivo.
- Estos hallazgos vinculan la represión de E2F con la capacidad de inducción de diferenciación de C/EBPalpha.
Conclusiones:
- La represión de E2F por C/EBPalpha es esencial para inducir la diferenciación terminal.
- Control directo del ciclo celular por las parejas C/EBPalpha detener el crecimiento con diferenciación.
- Esto proporciona evidencia genética para el control del factor de transcripción instructivo del linaje sobre las decisiones del destino celular.
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