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Aquí para quedarse: escribir recuerdos epigenéticos duraderos
Hagar F Moussa1, James F Angstman1, Ahmad S Khalil2
1Department of Biomedical Engineering and Biological Design Center, Boston University, Boston, MA 02215, USA.
Cell
|April 30, 2021
Resumen
Los investigadores crearon CRISPRoff, una nueva herramienta que silencia de manera estable los genes a través de la memoria epigenética. Este sistema programable ofrece un método confiable para la regulación genética, las pantallas de todo el genoma y las aplicaciones terapéuticas.
Área de la Ciencia:
- Biología molecular
- La epigenética
- Regulación genética
Sus antecedentes:
- Las modificaciones epigenéticas juegan un papel crucial en la expresión génica y la identidad celular.
- El control estable y programable de los estados epigenéticos es esencial para comprender y manipular las funciones celulares.
Objetivo del estudio:
- Para desarrollar un nuevo escritor de memoria epigenética programable.
- Para establecer programas de silenciamiento de genes estables a través de la división celular y la diferenciación.
Principales métodos:
- Desarrollo de CRISPRoff, un editor epigenético basado en la fusión dCas9.
- Utilizando CRISPR para el silenciamiento de genes programables.
- Evaluación de la estabilidad de las modificaciones epigenéticas a través de la división y diferenciación celular.
Principales resultados:
- CRISPRoff establece con éxito programas específicos de silenciamiento de genes.
- La memoria epigenética inducida se mantiene estable a través de la división celular.
- El sistema demuestra fiabilidad y generalidad para aplicaciones de todo el genoma.
Conclusiones:
- CRISPRoff proporciona una herramienta simple y confiable para la escritura de memoria epigenética programable.
- Esta tecnología tiene aplicaciones potenciales en pantallas de todo el genoma, edición multiplexada y terapéutica.
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