Plexin-A4-dependent retrograde semaphorin 3A signalling regulates the dendritic localization of GluA2-containing AMPA receptors.
Nat Commun
; 5: 3424, 2014 Mar 06.
Article
en En
| MEDLINE
| ID: mdl-24599038
The dendritic targeting of neurotransmitter receptors is vital for dendritic development and function. However, how such localization is established remains unclear. Here we show that semaphorin 3A (Sema3A) signalling at the axonal growth cone is propagated towards the cell body by retrograde axonal transport and drives AMPA receptor GluA2 to the distal dendrites, which regulates dendritic development. Sema3A enhances glutamate receptor interacting protein 1-dependent localization of GluA2 in dendrites, which is blocked by knockdown of cytoplasmic dynein heavy chain. PlexinA (PlexA), a receptor component for Sema3A, interacts with GluA2 at the immunoglobulin-like Plexin-transcription-factor domain (PlexA-IPT) in somatodendritic regions. Overexpression of PlexA-IPT suppresses dendritic localization of GluA2 and induces aproximal bifurcation phenotype in the apical dendrites of CA1 hippocampal neurons. Thus, we propose a control mechanism by which retrograde Sema3A signalling regulates the glutamate receptor localization through trafficking of cis-interacting PlexA with GluA2 along dendrites.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Transducción de Señal
/
Receptores AMPA
/
Receptores de Superficie Celular
/
Dendritas
/
Semaforina-3A
/
Proteínas del Tejido Nervioso
Límite:
Animals
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Nat Commun
Asunto de la revista:
BIOLOGIA
/
CIENCIA
Año:
2014
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Reino Unido