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Las hembras luchan por suprimir su masculinidad interior
1Murdoch Children's Research Institute, Melbourne, Victoria 3052, Australia. andrew.sinclair@mcri.edu.au
Cell
|December 17, 2009
Resumen
La eliminación del gen Foxl2 en ratones hembras adultas desencadena la transdiferenciación de ovario a testículo. Esto sugiere que el desarrollo testicular está activamente suprimido en las mujeres durante toda la vida.
Área de la Ciencia:
- Biología de la reproducción Biología reproductiva.
- Biología del desarrollo Biología del desarrollo.
- Genética La genética.
Sus antecedentes:
- El ovario y los testículos se consideran tradicionalmente órganos terminalmente diferenciados en los mamíferos adultos.
- Existe una comprensión limitada con respecto al potencial de plasticidad celular en los órganos reproductivos de mamíferos adultos.
Objetivo del estudio:
- Para investigar el papel del gen Foxl2 en el mantenimiento de la identidad ovárica en ratones adultos.
- Explorar el potencial para la transdiferenciación entre los destinos ovárico y testicular.
Principales métodos:
- Estudios de deleción de genes con ratones hembras adultos.
- Análisis de la morfología del tejido ovárico y testicular y la expresión génica después de la deleción de Foxl2.
Principales resultados:
- La eliminación del gen Foxl2 indujo una notable transdiferenciación del ovario en una estructura parecida a un testículo.
- El estudio identificó a Foxl2 como un factor crucial en la represión de las vías de desarrollo masculino en el ovario adulto.
Conclusiones:
- El ovario no está terminalmente diferenciado y puede ser reprogramado en un testículo.
- Foxl2 juega un papel crítico en la supresión activa del desarrollo testicular en mujeres adultas, desafiando el dogma establecido.
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