• Neuroscience · Nov 2019

    Review

    The Control of Neuronal Calcium Homeostasis by SNAP-25 and its Impact on Neurotransmitter Release.

    • Davide Pozzi, Irene Corradini, and Michela Matteoli.
    • Humanitas University, Via Rita Levi Montalcini, 4, 20090 Pieve Emanuele, Milano, Italy; IRCCS Humanitas, via Manzoni 56, 20089 Rozzano, Italy. Electronic address: davide.pozzi@humanitasresearch.it.
    • Neuroscience. 2019 Nov 10; 420: 72-78.

    AbstractThe 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.Copyright © 2018. Published by Elsevier Ltd.

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