The Control of Neuronal Calcium Homeostasis by SNAP-25 and its Impact on Neurotransmitter Release.
Neuroscience
; 420: 72-78, 2019 11 10.
Article
em En
| MEDLINE
| ID: mdl-30476527
ABSTRACT
The process of neurotransmitter release is central to the control of cell-to-cell communication in brain. SNAP-25 is a component of the SNARE complex, which, together with syntaxin-1 and synaptobrevin, mediates synaptic vesicle fusion with the plasma membrane. The genetic ablation of the protein or its proteolytic cleavage by botulinum neurotoxins results in a complete block of synaptic transmission. In the last years, several evidences have indicated that SNAP-25 also plays additional modulatory roles in neurotransmission through the control of voltage-gated calcium channels and presynaptic calcium ion concentration. Consistently, reduced levels of the protein affect presynaptic calcium homeostasis and result in pathologically enhanced glutamate exocytosis. The SNAP-25-dependent alterations of synaptic calcium dynamics may have direct impact on the development of neuropsychiatric disorders where the Snap-25 gene has been found to be involved.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cálcio
/
Neurotransmissores
/
Proteína 25 Associada a Sinaptossoma
/
Exocitose
/
Neurônios
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article