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Updated: May 2, 2026

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms
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Las mutaciones de novo en la esquizofrenia implican redes sinápticas.

Menachem Fromer1, Andrew J Pocklington2, David H Kavanagh2

  • 11] Division of Psychiatric Genomics in the Department of Psychiatry, and Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA [2] Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA.

Nature
|January 28, 2014
PubMed
Resumen

Las pequeñas mutaciones de novo, que afectan a los genes de proteínas postsinápticas como la proteína asociada al citoesqueleto regulada por la actividad (ARC) y los receptores de N-metil-d-aspartato (NMDAR), están vinculadas al riesgo de esquizofrenia. Estos hallazgos genéticos revelan mecanismos compartidos con otros trastornos del desarrollo neurológico.

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Área de la Ciencia:

  • La neurogenética es la neurogenética.
  • La psiquiatría molecular es la psiquiatría molecular.
  • Biología Sináptica Biología Sináptica

Sus antecedentes:

  • El riesgo de esquizofrenia se atribuye principalmente a factores genéticos heredados.
  • Las grandes mutaciones de novo (cambios en el número de copias) afectan a un pequeño subconjunto de pacientes, impactando desproporcionadamente en los genes de proteínas postsinápticas.
  • El papel de las pequeñas mutaciones de novo en la patogénesis de la esquizofrenia sigue siendo menos comprendido.

Objetivo del estudio:

  • Investigar el enriquecimiento de pequeñas mutaciones de novo en complejos específicos de proteínas sinápticas en la esquizofrenia.
  • Para identificar las vías sinápticas y los genes afectados por estas mutaciones.
  • Explorar los mecanismos etiológicos compartidos entre la esquizofrenia y otros trastornos del desarrollo neurológico.

Principales métodos:

  • Análisis de pequeñas mutaciones de novo en los genes que codifican las proteínas postsinápticas glutamatérgicas.
  • Identificación de mutaciones en proteínas que interactúan con la proteína asociada al citoesqueleto regulada por la actividad (ARC) y los complejos del receptor N-metil-d-aspartato (NMDAR).
  • Comparación de genes y vías enriquecidos con mutaciones con los del autismo y la discapacidad intelectual.

Principales resultados:

  • Las pequeñas mutaciones de novo están sobrerrepresentadas en los genes que codifican las proteínas complejas ARC y NMDAR.
  • Se observó enriquecimiento de mutaciones en las proteínas que regulan la dinámica de la actina y las dianas de la proteína X frágil de retraso mental (FMRP).
  • Los genes y las vías sinápticas afectadas por mutaciones en la esquizofrenia se superponen con los del autismo y la discapacidad intelectual.

Conclusiones:

  • Las pequeñas mutaciones de novo contribuyen al riesgo de esquizofrenia al interrumpir los mecanismos críticos de plasticidad postsináptica y sináptica.
  • Los hallazgos destacan la fisiopatología genética y molecular compartida subyacente a la esquizofrenia y otros trastornos del desarrollo neurológico.
  • Esta investigación proporciona conocimientos reproducibles sobre los mecanismos etiológicos de la esquizofrenia.