Microglia modulate wiring of the embryonic forebrain.
Cell Rep
; 8(5): 1271-9, 2014 Sep 11.
Article
em En
| MEDLINE
| ID: mdl-25159150
ABSTRACT
Dysfunction of microglia, the tissue macrophages of the brain, has been associated with the etiology of several neuropsychiatric disorders. Consistently, microglia have been shown to regulate neurogenesis and synaptic maturation at perinatal and postnatal stages. However, microglia invade the brain during mid-embryogenesis and thus could play an earlier prenatal role. Here, we show that embryonic microglia, which display a transiently uneven distribution, regulate the wiring of forebrain circuits. Using multiple mouse models, including cell-depletion approaches and cx3cr1(-/-), CR3(-/-), and DAP12(-/-) mutants, we find that perturbing microglial activity affects the outgrowth of dopaminergic axons in the forebrain and the laminar positioning of subsets of neocortical interneurons. Since defects in both dopamine innervation and cortical networks have been linked to neuropsychiatric diseases, our study provides insights into how microglial dysfunction can impact forebrain connectivity and reveals roles for immune cells during normal assembly of brain circuits.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Prosencéfalo
/
Receptor de Fator Estimulador de Colônias de Macrófagos
/
Microglia
/
Neurogênese
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Cell Rep
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
França