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El paisaje fenotípico de los genes asociados a la esquizofrenia define a los candidatos y sus funciones compartidas

Summer B Thyme¹, Lindsey M Pieper¹, Eric H Li¹

¹Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.

|April 2, 2019

Resumen

Los investigadores utilizaron el pez cebra para estudiar los genes asociados con la esquizofrenia, creando un atlas detallado de la actividad cerebral, la estructura y el comportamiento. Este trabajo prioriza más de 30 genes para una mayor investigación de los mecanismos genéticos de la esquizofrenia.

Área de la Ciencia:

Neurogenética
Neurociencia del desarrollo
Genética del comportamiento

Sus antecedentes:

Los estudios genómicos han relacionado numerosos genes con el riesgo de esquizofrenia.
Comprender la función de estos genes candidatos es crucial para dilucidar los mecanismos de la enfermedad.

Objetivo del estudio:

Caracterizar funcionalmente los ortólogos de pez cebra de 132 genes asociados a la esquizofrenia humana.
Crear un atlas de fenotipos completo para identificar y priorizar los genes candidatos.

Principales métodos:

Generó mutaciones en ortólogos de pez cebra de 132 genes asociados a la esquizofrenia humana.
Desarrolló un atlas de fenotipos que incluye mapas de actividad cerebral completa, resonancia magnética estructural y ensayos de comportamiento.
Se utilizó la secuenciación de ARN de una sola célula para investigar la función génica en el desarrollo neuronal.

Principales resultados:

Se identificaron fenotipos diversos y específicos, incluido el desarrollo alterado del cerebro anterior y la inhibición prepulsiva deteriorada.
Se han priorizado más de 30 genes candidatos, destacando el transportador de magnesio cnnm2 y el represor traslacional gigyf2.
El znf536 descubierto juega un papel crítico en el desarrollo de neuronas cerebrales relevantes para el comportamiento social y el estrés.

Conclusiones:

El paisaje fenotípico generado proporciona un recurso valioso para la investigación de la esquizofrenia.
Este estudio ofrece hipótesis verificables para conectar las asociaciones genéticas con los mecanismos biológicos de la esquizofrenia.
Prioriza genes específicos y circuitos neuronales para futuras investigaciones sobre la etiología de la esquizofrenia.

Palabras clave:

Las GWAS comportamiento Cerebro anterior desarrollo neurológico trastorno neuropsiquiátrico Inhibición del prepulso Esquizofrenia secuenciación de ARN de una sola célula actividad de todo el cerebro Pescado cebra

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