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Estrategia proteomimética para la modulación de la proteína intrínsecamente desordenada MYC

Thu Nguyen1, Seong Ho Hong1, Paramjit Arora1

  • 1Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States.

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Diseñar fármacos para proteínas dinámicas como MYC es un desafío. Este estudio desarrolló un método para atrapar una forma específica de proteína, lo que permite la creación de terapias dirigidas a proteínas intrínsecamente desordenadas.

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Área de la Ciencia:

  • La bioquímica
  • Biología estructural
  • Descubrimiento de drogas

Sus antecedentes:

  • El desarrollo de ligandos específicos para los receptores de proteínas es difícil, especialmente para las proteínas conformacionalmente dinámicas e intrínsecamente desordenadas (IDP).
  • Los IDP carecen de estructuras fijas, lo que dificulta la identificación de sitios de unión para el diseño de ligandos sintéticos.
  • MYC es un objetivo terapéutico crítico, pero ha eludido los inhibidores de moléculas pequeñas debido a su naturaleza dinámica.

Objetivo del estudio:

  • Desarrollar un método general para el diseño de ligandos dirigidos a proteínas intrínsecamente desordenadas.
  • Para demostrar este enfoque usando MYC, un objetivo terapéutico conocido.

Principales métodos:

  • Hipotetizó que atrapar una conformación proteica específica podría permitir el diseño de ligandos.
  • Diseñado un andamio proteomimético para capturar la conformación helicoidal de MYC cuando se une a MAX.
  • Valido el enfoque a través de ensayos bioquímicos y celulares.

Principales resultados:

  • Diseñado con éxito un andamio que atrapa la conformación helicoidal de MYC.
  • Demostrado que el andamio diseñado puede comprometer directamente a MYC.
  • Confirmó la utilidad del enfoque tanto en entornos in vitro como celulares.

Conclusiones:

  • Este trabajo presenta una estrategia generalizable para atacar proteínas intrínsecamente desordenadas.
  • El método consiste en atrapar una conformación específica y termodinámicamente accesible de la proteína objetivo.
  • Este enfoque ofrece una vía prometedora para desarrollar terapias contra objetivos desafiantes como MYC.