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Acceso nuclear y acción de notch in vivo

G Struhl¹, A Adachi

¹Howard Hughes Medical Institute, Department of Genetics and Development, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA.

|May 30, 1998

Resumen

El dominio intracelular del receptor de Drosophila Notch (N) entra en el núcleo tras la unión de ligandos, un proceso crucial para la determinación del destino celular. Este dominio, especialmente las repeticiones CDC10, es esencial para la activación transcripcional de los genes diana.

Área de la Ciencia:

Biología celular Biología celular.
Biología del desarrollo Biología del desarrollo.
Genética La genética.

Sus antecedentes:

El gen Notch (N) codifica un receptor transmembrana vital para la señalización del destino celular.
Las señales extracelulares son transducidas por Notch, regulando los procesos de desarrollo.

Objetivo del estudio:

Para investigar el mecanismo de señalización del receptor Notch.
Determinar el papel del dominio intracelular de Notch en la regulación transcripcional.

Principales métodos:

Estudiando el gen Drosophila Notch (N) y su producto proteico.
Analizando la localización nuclear del dominio intracelular.
Investigando el papel de las repeticiones CDC10 en la activación transcripcional.

Principales resultados:

La evidencia sugiere que el dominio intracelular de Notch accede al núcleo en respuesta al ligando.
La escisión proteolítica puede facilitar la liberación del dominio intracelular.
El dominio intracelular, particularmente las repeticiones CDC10, es necesario para la entrada nuclear y la activación transcripcional.

Conclusiones:

La transducción de señales de muesca depende de la localización nuclear de su dominio intracelular.
El dominio intracelular de Notch juega un papel directo en la activación de los genes diana aguas abajo, influyendo en el destino celular.

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