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Un atlas de la regulación transcripcional combinatoria en el ratón y el hombre
Timothy Ravasi1, Harukazu Suzuki, Carlo Vittorio Cannistraci
1The FANTOM Consortium, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
Cell
|March 10, 2010
Resumen
Este estudio mapea las interacciones del factor de transcripción (TF) en humanos y ratones, revelando redes conservadas cruciales para la regulación génica y el destino celular. Las combinaciones clave de TF guían la expresión y el desarrollo específicos de los tejidos, ofreciendo información sobre la evolución.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- La genómica es la genómica.
- Biología del desarrollo Biología del desarrollo.
Sus antecedentes:
- Los factores de transcripción (TF) orquestan la expresión génica a través de interacciones combinatorias.
- Comprender estas interacciones es vital para descifrar la regulación génica específica del tejido y la diferenciación celular.
Objetivo del estudio:
- Construir redes integrales de interacciones físicas entre el ADN humano y el ratón.
- Para analizar el panorama global de interacción de TF e identificar los mecanismos de regulación conservados.
Principales métodos:
- Cribado a gran escala para las interacciones físicas entre la mayoría de los TFs que se unen al ADN humano y del ratón.
- Análisis de red para identificar TFs altamente conectados e interacciones conservadas.
Principales resultados:
- Generó redes de interacción TF con 762 interacciones humanas y 877 con ratones.
- Se encontró que los TF altamente conectados exhiben una amplia expresión tisular.
- Se observó la conservación de aproximadamente la mitad de las interacciones medidas de TF entre especies.
- Se identificó un complejo SMAD3/FLI1 específico implicado en el desarrollo del sistema inmunológico.
Conclusiones:
- Las redes combinatorias TF son esenciales para la determinación del destino celular y la diferenciación tisular.
- Los datos de interacción TF generados proporcionan un recurso valioso para estudiar la regulación, el desarrollo y la evolución de los genes.
- Las interacciones conservadas de TF resaltan los principios regulatorios fundamentales en todas las especies de mamíferos.
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