Tangential migration of corridor guidepost neurons contributes to anxiety circuits.
J Comp Neurol
; 526(3): 397-411, 2018 Feb 15.
Article
en En
| MEDLINE
| ID: mdl-28921616
ABSTRACT
In mammals, thalamic axons are guided internally toward their neocortical target by corridor (Co) neurons that act as axonal guideposts. The existence of Co-like neurons in non-mammalian species, in which thalamic axons do not grow internally, raised the possibility that Co cells might have an ancestral role. Here, we investigated the contribution of corridor (Co) cells to mature brain circuits using a combination of genetic fate-mapping and assays in mice. We unexpectedly found that Co neurons contribute to striatal-like projection neurons in the central extended amygdala. In particular, Co-like neurons participate in specific nuclei of the bed nucleus of the stria terminalis, which plays essential roles in anxiety circuits. Our study shows that Co neurons possess an evolutionary conserved role in anxiety circuits independently from an acquired guidepost function. It furthermore highlights that neurons can have multiple sequential functions during brain wiring and supports a general role of tangential migration in the building of subpallial circuits.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Tálamo
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Vías Aferentes
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Movimiento Celular
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Regulación del Desarrollo de la Expresión Génica
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Tegmento Pontino
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Orientación del Axón
Idioma:
En
Revista:
J Comp Neurol
Año:
2018
Tipo del documento:
Article
País de afiliación:
Francia