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Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
Conexiones y regulación del receptor de estrógeno humano
Donald P McDonnell1, John D Norris
1Department of Pharmacology and Cancer Biology, Duke University Medical Center, Box 3813, Durham, NC 27710, USA. donald.mcdonnell@duke.edu
Resumen
El estrógeno es el estrógeno.
Área de la Ciencia:
- Endocrinología y Biología Molecular.
Sus antecedentes:
- El estrógeno influye en diversas funciones celulares en múltiples tejidos.
- Las respuestas celulares al estrógeno varían significativamente, lo que requiere una comprensión más profunda de sus mecanismos moleculares.
Objetivo del estudio:
- Para dilucidar la base molecular para las respuestas celulares diferenciales a los estrógenos.
- Para resaltar los factores clave que rigen la especificidad de la señalización del estrógeno.
Principales métodos:
- Revisión de estudios moleculares recientes sobre la acción del receptor de estrógeno (ER).
- Análisis de los subtipos de ER, las interacciones de los cofactores y los patrones de expresión celular.
Principales resultados:
- Se identificaron dos receptores de estrógenos (RE) distintos con perfiles de expresión in vivo únicos.
- Se ha demostrado que la actividad transcripcional de ER depende de las interacciones con cofactores de transcripción específicos (coactivadores/corepresores).
- Destacó que la expresión y la función del cofactor son específicas de la célula y no uniformes.
Conclusiones:
- La presencia del receptor de estrógeno es necesaria pero no suficiente para la respuesta celular al estrógeno.
- El contexto celular específico, incluidos los cofactores disponibles y las vías de interacción, dicta la naturaleza y la magnitud de la respuesta estrogénica.
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