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Desarrollo de mapas retinotópicos simultáneos en el circuito de detección de movimiento de mosca

Filipe Pinto-Teixeira¹, Clara Koo², Anthony Michael Rossi²

¹Center for Genomics and Systems Biology, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates; Department of Biology, New York University, New York, NY 10003, USA.

|March 27, 2018

Resumen

Los científicos descubrieron cómo el desarrollo del cerebro de la mosca de la fruta crea conexiones complejas. Las reglas simples en la neurogénesis generan neuronas T4 y T5 específicas, estableciendo mapas retinotópicos para la detección de movimiento.

Área de la Ciencia:

La neurociencia
Biología del desarrollo
La genética

Sus antecedentes:

Comprender el desarrollo del cableado cerebral es complejo.
El sistema visual de Drosophila procesa la información de manera retinotópica.
Las neuronas T4 y T5 en la placa lobular detectan movimiento en direcciones cardinales.

Objetivo del estudio:

Investigar las reglas de neurogénesis que rigen el desarrollo de las neuronas T4 y T5.
Comprender cómo surgen la retinotopía y la selectividad de dirección durante el desarrollo.
Para aclarar las bases del desarrollo de la organización neuronal compleja.

Principales métodos:

Utilizó divisiones celulares dependientes de Notch en progenitores de Drosophila.
Se analizaron las divisiones celulares secuenciales para producir subtipos de neuronas T4 y T5.
Investigó la relación entre el orden de nacimiento neuronal y la retinotopía.

Principales resultados:

Descubrió un modo de neurogénesis que produce pares de neuronas T4 y T5.
Se han demostrado divisiones secuenciales de progenitores dependientes de Notch.
La retinotopía mostrada emerge directamente del orden de nacimiento neuronal.
Se estableció una selectividad de dirección opuesta en pares en el desarrollo de las neuronas.

Conclusiones:

Las reglas simples de desarrollo pueden generar una organización neuronal compleja.
El orden de nacimiento neuronal es crítico para establecer la retinotopía.
Este estudio proporciona información sobre los mecanismos genéticos y de desarrollo del cableado cerebral.

Palabras clave:

Las Drosophila Encofrado neuronas selectivas de dirección conectividad neuronal desarrollo neuronal el lóbulo óptico Formación de patrones Retinotopía

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