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Ensamblaje de esferoides del cerebro anterior humano funcionalmente integrados

Fikri Birey1, Jimena Andersen1, Christopher D Makinson2

  • 1Department of Psychiatry and Behavioral Sciences, Center for Sleep Sciences and Medicine, Stanford University School of Medicine, Stanford, California 94305, USA.

Nature
|April 27, 2017
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores modelaron el desarrollo del cerebro humano utilizando esferoides de células madre. Observaron una migración anormal de neuronas en el síndrome de Timothy, un trastorno del desarrollo neurológico, allanando el camino para estudiar el desarrollo y las enfermedades del cerebro.

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Área de la Ciencia:

  • La neurociencia
  • Biología del desarrollo
  • Biología de las células madre

Sus antecedentes:

  • El desarrollo del sistema nervioso implica una migración neuronal compleja y la integración de circuitos.
  • El modelado de la migración e integración de las interneuronas humanas in vitro ha sido un desafío.

Objetivo del estudio:

  • Desarrollar un modelo de células madre humanas para estudiar la migración de las interneuronas y la formación de circuitos.
  • Para investigar el impacto de las mutaciones del síndrome de Timothy en la migración de las interneuronas.

Principales métodos:

  • Generación de esferoides del cerebro anterior en 3D a partir de células madre pluripotentes humanas.
  • Montaje de esferoides dorsales y ventrales del cerebro anterior para modelar la migración de las interneuronas.
  • Análisis de los patrones de migración de las interneuronas en un modelo del síndrome de Timothy.

Principales resultados:

  • Migración de la interneurona saltatoria recapitulada con éxito in vitro utilizando esferoides del cerebro anterior ensamblados.
  • Se identificaron saltaciones migratorias anormales de las interneuronas en un modelo del síndrome de Timothy.
  • Integración funcional demostrada de las interneuronas migradas con las neuronas glutamatérgicas.

Conclusiones:

  • El sistema esferoide desarrollado modela efectivamente la migración de las interneuronas humanas y el ensamblaje de circuitos.
  • Este modelo proporciona información sobre los defectos del desarrollo neurológico asociados con el síndrome de Timothy.
  • El enfoque es adaptable para estudiar otras regiones del cerebro y trastornos neurológicos.