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El tumor de Wilms 1 y Dax-1 modulan el receptor nuclear huérfano SF-1 en la expresión génica específica del sexo
M W Nachtigal1, Y Hirokawa, D L Enyeart-VanHouten
1Department of Physiology, University of California at San Francisco, 94143-0444, USA.
Cell
|May 20, 1998
Resumen
El factor esteroideogénico 1 (SF-1) y Wilms.
Área de la Ciencia:
- Endocrinología Molecular La Endocrinología Molecular
- Biología del desarrollo Biología del desarrollo.
- Genética La genética.
Sus antecedentes:
- El factor esteroideogénico 1 (SF-1) y los productos genéticos del tumor de Wilms 1 (WT1) son cruciales para la gonadogénesis de los mamíferos y la diferenciación sexual.
- SF-1 regula la expresión de la sustancia inhibidora de Müllerian (MIS), una hormona clave en el desarrollo sexual masculino.
Objetivo del estudio:
- Investigar la interacción entre las isoformas WT1 y SF-1 en la regulación de la expresión de MIS.
- Para determinar el papel de las mutaciones WT1 y Dax-1 en la gonadogénesis masculina.
Principales métodos:
- Análisis de la asociación de la isoforma WT1-KTS y la sinergia con SF-1.
- Evaluación del efecto de las mutaciones de error de WT1 en la sinergia de SF-1.
- Investigación de la interacción de Dax-1 con SF-1 y WT1.1.
Principales resultados:
- Las isoformas WT1-KTS se asocian y sinergizan con SF-1 para mejorar la expresión de MIS.
- Las mutaciones WT1 asociadas con el síndrome de Denys-Drash perjudican la sinergia SF-1.
- Dax-1 antagoniza la interacción sinérgica entre SF-1 y WT1, probablemente a través de la interacción directa de SF-1.
Conclusiones:
- WT1 y Dax-1 se oponen funcionalmente en el desarrollo de los testículos.
- Esta oposición es mediada a través de la modulación de la transactivación dependiente de SF-1.
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