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Front Neurosci. 2017 Dec 21;11:692. doi: 10.3389/fnins.2017.00692. eCollection 2017.

Rostro-Caudal and Caudo-Rostral Migrations in the Telencephalon: Going Forward or Backward?

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1
Université Côte d'Azur, CNRS, Inserm, iBV, Nice, France.

Abstract

The generation and differentiation of an appropriate number of neurons, as well as its distribution in different parts of the brain, is crucial for the proper establishment, maintenance and plasticity of neural circuitries. Newborn neurons travel along the brain in a process known as neuronal migration, to finalize their correct position in the nervous system. Defects in neuronal migration produce abnormalities in the brain that can generate neurodevelopmental pathologies, such as autism, schizophrenia and intellectual disability. In this review, we present an overview of the developmental origin of the different telencephalic subdivisions and a description of migratory pathways taken by distinct neural populations traveling long distances before reaching their target position in the brain. In addition, we discuss some of the molecules implicated in the guidance of these migratory paths and transcription factors that contribute to the correct migration and integration of these neurons.

KEYWORDS:

amygdala; cortical interneurons; neuronal migration; olfactory bulb; pallium; subpallium; telencephalon; transcription factors

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