Coupled Proliferation and Apoptosis Maintain the Rapid Turnover of Microglia in the Adult Brain.
Cell Rep
; 18(2): 391-405, 2017 01 10.
Article
en En
| MEDLINE
| ID: mdl-28076784
ABSTRACT
Microglia play key roles in brain development, homeostasis, and function, and it is widely assumed that the adult population is long lived and maintained by self-renewal. However, the precise temporal and spatial dynamics of the microglial population are unknown. We show in mice and humans that the turnover of microglia is remarkably fast, allowing the whole population to be renewed several times during a lifetime. The number of microglial cells remains steady from late postnatal stages until aging and is maintained by the spatial and temporal coupling of proliferation and apoptosis, as shown by pulse-chase studies, chronic in vivo imaging of microglia, and the use of mouse models of dysregulated apoptosis. Our results reveal that the microglial population is constantly and rapidly remodeled, expanding our understanding of its role in the maintenance of brain homeostasis.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Encéfalo
/
Envejecimiento
/
Apoptosis
/
Microglía
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Cell Rep
Año:
2017
Tipo del documento:
Article
País de afiliación:
Reino Unido