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Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
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Red de retroalimentación de señal artificial que imita la adaptabilidad celular

Hui Liu1, Qiuxia Yang1, Ruizi Peng1

  • 1Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province , Hunan University , Changsha Hunan , 410082 , China.

Journal of the American Chemical Society
|April 4, 2019
PubMed
Resumen

Los investigadores diseñaron un sistema dinámico adaptativo artificial utilizando la nanotecnología del ADN. Este sistema detecta las tensiones ambientales y responde eliminando el estímulo, creando un mecanismo de retroalimentación cíclica para la homeostasis celular.

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Área de la Ciencia:

  • Ingeniería bioinspirada
  • Biología sintética
  • Sistemas biomiméticos

Sus antecedentes:

  • Las células poseen sistemas adaptativos elegantes para responder a los cambios ambientales.
  • Los sistemas artificiales carecen de mecanismos sofisticados de detección y retroalimentación para la homeostasis.

Objetivo del estudio:

  • Diseñar un sistema dinámico de adaptación artificial capaz de detectar y responder a las tensiones ambientales.
  • Para crear un sistema de autorregulación que imite la adaptabilidad celular utilizando la nanotecnología del ADN.

Principales métodos:

  • Construyó un sistema de señal artificial basado en ADN (DASsys) utilizando nanotecnología de ADN.
  • Ancoró el sistema a la membrana de las protocélulas de vesícula de membrana gigante (GMV).
  • Formación de polímeros inducida por el desencadenante del ADN incorporado y disociación para la eliminación del estímulo.

Principales resultados:

  • DASsys demostró un modo único de sentido y respuesta a los estímulos ambientales.
  • Logró un mecanismo de retroalimentación cíclica donde el sistema vuelve a su estado inicial después de la eliminación del estímulo.
  • Se creó con éxito un sistema de señalización artificial para mantener la homeostasis en un micromedio celular.

Conclusiones:

  • El DASsys desarrollado representa un nuevo enfoque de la ingeniería bioinspirada.
  • Esta estrategia abre caminos para la construcción de sistemas de señalización artificial con capacidades homeostáticas.
  • Aborda los desafíos clave en la creación de sistemas celulares artificiales receptivos y adaptativos.