FGF receptors are required for proper axonal branch targeting in Drosophila.
Mol Brain
; 12(1): 84, 2019 10 24.
Article
en En
| MEDLINE
| ID: mdl-31651328
ABSTRACT
Proper axonal branch growth and targeting are essential for establishing a hard-wired neural circuit. Here, we examined the role of Fibroblast Growth Factor Receptors (FGFRs) in axonal arbor development using loss of function and overexpression genetic analyses within single neurons. We used the invariant synaptic connectivity patterns of Drosophila mechanosensory neurons with their innate cleaning reflex responses as readouts for errors in synaptic targeting and circuit function. FGFR loss of function resulted in a decrease in axonal branch number and lengths, and overexpression of FGFRs resulted in ectopic branches and increased lengths. FGFR mutants produced stereotyped axonal targeting errors. Both loss of function and overexpression of FGFRs within the mechanosensory neuron decreased the animal's frequency of response to mechanosensory stimulation. Our results indicate that FGFRs promote axonal branch growth and proper branch targeting. Disrupting FGFRs results in miswiring and impaired neural circuit function.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Axones
/
Receptores de Factores de Crecimiento de Fibroblastos
/
Drosophila melanogaster
Límite:
Animals
Idioma:
En
Revista:
Mol Brain
Asunto de la revista:
BIOLOGIA MOLECULAR
/
CEREBRO
Año:
2019
Tipo del documento:
Article
País de afiliación:
Canadá