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Regulación epigenética de ingeniería utilizando módulos sintéticos de lectura y escritura

Minhee Park1, Nikit Patel1, Albert J Keung2

  • 1Biological Design Center, Boston University, Boston, MA 02215, USA; Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA.

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|December 12, 2018
PubMed
Resumen
Este resumen es generado por máquina.

Los científicos crearon un nuevo sistema de regulación epigenética en las células de mamíferos utilizando la modificación del ADN N6-metiladenina (m6A). Este sistema puede programar y mantener la memoria epigenética, ofreciendo un nuevo conjunto de herramientas para estudiar la regulación epigenética.

Palabras clave:
Metilación del ADNN6-metiladenina y sus derivadosingeniería celularCromatina y sus derivadosMemoria epigenéticaLa epigenéticaregulación genéticalectura y escrituraBiología sintética

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Área de la Ciencia:

  • Epigenética y regulación genética
  • Biología sintética
  • Biología celular de mamíferos

Sus antecedentes:

  • Las modificaciones químicas en el ADN y las histonas orquestan los programas epigenéticos en la diferenciación celular.
  • Las redes reguladoras de escritores y lectores de marcas de cromatina controlan estos programas epigenéticos.

Objetivo del estudio:

  • Establecer un sistema de regulación epigenética ortogonal en las células de mamíferos utilizando N6-metiladenina (m6A).
  • Investigar el potencial de las arquitecturas epigenéticas sintéticas de "lectura-escritura" para la programación de estados celulares.

Principales métodos:

  • Desarrollo de factores sintéticos para escribir y leer modificaciones del ADN m6A.
  • Construcción de circuitos reguladores mínimos para inducir y propagar estados transcripcionales dependientes de m6A.
  • Utilizando el modelado matemático para comprender la herencia epigenética y la dinámica de propagación de la cromatina.

Principales resultados:

  • Se estableció con éxito un sistema de regulación epigenética funcional basado en m6A en células de mamíferos.
  • Demostró la capacidad de los circuitos sintéticos para programar funciones epigenéticas de novo.
  • Mostró la propagación espacial y el mantenimiento de la memoria epigenética dentro de los estados de transcripción inducidos.

Conclusiones:

  • Arquitecturas epigenéticas de "lectura-escritura" validadas conceptualmente para la regulación genética programable.
  • Proporcionó un nuevo conjunto de herramientas para investigar modelos de regulación epigenética y codificar información epigenética.
  • Destacó el potencial de la epigenética sintética para el avance de la biología celular y la biología sintética.