Astrocyte VAMP3 vesicles undergo Ca2+ -independent cycling and modulate glutamate transporter trafficking
Autor: | Li, Dongdong, Hérault, Karine, Zylbersztejn, Kathleen, Lauterbach, Marcel A, Guillon, Marc, Oheim, Martin, Ropert, Nicole |
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Přispěvatelé: | Neurophysiologie et nouvelles microscopies ( NNM (UM 82) ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de physiologie cérébrale ( LPC - UMR 8118 ), Université Paris Diderot - Paris 7 ( UPD7 ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Université Sorbonne Paris Cité ( USPC ), Institut Jacques Monod ( IJM ), Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Trafic Membranaire et Morphogenèse Neuronale & Epithéliale, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire de Neurophotonique ( UMR 8250 ), Centre National de la Recherche Scientifique ( CNRS ) -Université Paris Descartes - Paris 5 ( UPD5 ), France-Berkeley. Grant Number: RRZR03LU, European Union FP6-STRP-2006-037897 FP7-ERA-NET Neuron 09NEUR006, Universite Paris Descartes 1199PJ05, CNRS, Fondation pour la Recherche Medicale (FRM), Ecole des Neuroscience de Paris (ENP), Centre for Competences in Nano-Science (C'Nano), Marie Curie program PIEF-GA-2011-297917, ANR-11-BSV4-0004,OptoGlia,Optogénétique contrôle de la gliotransmission ( 2011 ), Neurophysiologie et nouvelles microscopies (NNM (UM 82)), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5), Laboratoire de physiologie cérébrale (LPC - UMR 8118), Université Paris Diderot - Paris 7 (UPD7)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Sorbonne Paris Cité (USPC), Institut Jacques Monod (IJM (UMR_7592)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Neurophotonique (UMR 8250), Université Paris Descartes - Paris 5 (UPD5)-Centre National de la Recherche Scientifique (CNRS), ANR-11-BSV4-0004,OptoGlia,Optogénétique contrôle de la gliotransmission(2011), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris Descartes - Paris 5 (UPD5) |
Jazyk: | angličtina |
Rok vydání: | 2015 |
Předmět: |
Cerebral Cortex
Vesicle-Associated Membrane Protein 3 [ SDV.MHEP.PHY ] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] Amino Acid Transport System X-AG Neuroscience: Cellular/Molecular Endocytosis Exocytosis Mice Protein Transport Astrocytes [ SDV.NEU ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] Animals Calcium [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] Transport Vesicles Cells Cultured |
Zdroj: | Journal of Physiology Journal of Physiology, Wiley, 2015, 593 (13), pp.2807-32. 〈10.1113/JP270362〉 The Journal of Physiology The Journal of Physiology, Wiley, 2015, 593 (13), pp.2807-32. ⟨10.1113/JP270362⟩ Journal of Physiology, Wiley, 2015, 593 (13), pp.2807-32. ⟨10.1113/JP270362⟩ |
ISSN: | 0022-3751 1469-7793 |
DOI: | 10.1113/JP270362〉 |
Popis: | International audience; Mouse cortical astrocytes express VAMP3 but not VAMP2. VAMP3 vesicles undergo Ca(2+) -independent exo- and endocytotic cycling at the plasma membrane. VAMP3 vesicle traffic regulates the recycling of plasma membrane glutamate transporters. cAMP modulates VAMP3 vesicle cycling and glutamate uptake. Previous studies suggest that small synaptic-like vesicles in astrocytes carry vesicle-associated vSNARE proteins, VAMP3 (cellubrevin) and VAMP2 (synaptobrevin 2), both contributing to the Ca(2+) -regulated exocytosis of gliotransmitters, thereby modulating brain information processing. Here, using cortical astrocytes taken from VAMP2 and VAMP3 knock-out mice, we find that astrocytes express only VAMP3. The morphology and function of VAMP3 vesicles were studied in cultured astrocytes at single vesicle level with stimulated emission depletion (STED) and total internal reflection fluorescence (TIRF) microscopies. We show that VAMP3 antibodies label small diameter (∼80 nm) vesicles and that VAMP3 vesicles undergo Ca(2+) -independent exo-endocytosis. We also show that this pathway modulates the surface expression of plasma membrane glutamate transporters and the glutamate uptake by astrocytes. Finally, using pharmacological and optogenetic tools, we provide evidence suggesting that the cytosolic cAMP level influences astrocytic VAMP3 vesicle trafficking and glutamate transport. Our results suggest a new role for VAMP3 vesicles in astrocytes. |
Databáze: | OpenAIRE |
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