Cited by 262Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsCannabis and Cannabinoid Research

Astroglial CB1 Receptors Determine Synaptic D-Serine Availability to Enable Recognition Memory

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Robin, Laurie M., Oliveira da Cruz, José F., Langlais, Valentin C., Martin-Fernandez, Mario, Metna-Laurent, Mathilde, Busquets-Garcia, Arnau, Bellocchio, Luigi, Soria-Gomez, Edgar +15 more·2018·Neuron

Abstract

Bidirectional communication between neurons and astrocytes shapes synaptic plasticity and behavior. D-serine is a necessary co-agonist of synaptic N-methyl-D-aspartate receptors (NMDARs), but the physiological factors regulating its impact on memory processes are scantly known. We show that astroglial CB 1 receptors are key determinants of object recognition memory by determining the availability of D-serine at hippocampal synapses. Mutant mice lacking CB 1 receptors from astroglial cells (GFAP-CB 1-KO) displayed impaired object recognition memory and decreased in vivo and in vitro long-term potentiation (LTP) at CA3-CA1 hippocampal synapses. Activation of CB 1 receptors increased intracellular astroglial Ca 2+ levels and extracellular levels of D-serine in hippocampal slices. Accordingly, GFAP-CB 1-KO displayed lower occupancy of the co-agonist binding site of synaptic hippocampal NMDARs. Finally, elevation of D-serine levels fully rescued LTP and memory impairments of GFAP-CB 1-KO mice. These data reveal a novel mechanism of in vivo astroglial control of memory and synaptic plasticity via the D-serine-dependent control of NMDARs.

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Crossref · 10.1016/j.neuron.2018.04.034

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  • Astrocytes participate in hippocampus-dependent memory formation by controlling the availability of D-serine for synaptic NMDAR activation.

    “Astrocytes also participate in hippocampus-dependent memory formation by controlling the availability of D-serine for synaptic NMDAR activation 7, 32, 48 (see above).”
  • Astrocyte CB1 signaling is engaged in the early phase of memory consolidation.

    “was effective when administered immediately after memory acquisition but not 1 hour later, indicating that astrocyte CB1 signaling is engaged in the early phase of memory consolidation 48 .”
  • Astrocyte-dependent LTD underlies THC-induced working memory impairment, and THC hijacks the astrocyte CB1 signaling pathway normally involved in CA3-CA1 LTP and memory formation.

    “These findings demonstrate not only that astrocyte-dependent LTD underlies THC-induced working memory impairment, but also that THC 'hijacks' the astrocyte CB1 signaling pathway normally involved in CA3-CA1 LTP and memory formation 48 .”

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Authors
Robin, L. M., Oliveira da Cruz, J. F., Langlais, V. C., Martin-Fernandez, M., Metna-Laurent, M., Busquets-Garcia, A., Bellocchio, L., Soria-Gomez, E., Papouin, T., Varilh, M., Sherwood, M. W., Belluomo, I., Balcells, G., Matias, I., Bosier, B., Drago, F., Van Eeckhaut, A., Smolders, I., Georges, F., Araque, A., Panatier, A., Oliet, S. H. R., & Marsicano, G.
Affiliations
  • Université de Bordeaux (FR)
  • University of Catania (IT)
  • Vrije Universiteit Brussel (BE)
  • University of Minnesota (US)
Corresponding author
Marsicano, Giovanni
Venue
Neuron
Publisher
Elsevier BV
Published
2018-06
Volume
98
Issue
5
Pages
935-944.e5
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2803287932
Cited by
262
References
66
Citations by year
2026: 18 · 2025: 29 · 2024: 34 · 2023: 41 · 2022: 34 · 2021: 39 · 2020: 31 · 2019: 22 · 2018: 13
FWCI
11.96
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • HAL (submittedVersion, other-oa)
  • VUBIR (Vrije Universiteit Brussel) (submittedVersion)
Funders
  • INSERM
  • CNRS
  • EU–Fp7 (PAINCAGE,, HEALTH-603191)
  • European Research Council (Endofood, ERC-2010-StG-260515, CannaPreg, ERC-2014-PoC-640923)
  • Fondation pour la Recherche Médicale (DRM20101220445, DPP20151033974, FDT20160435664, DEQ 20130326519, FDT20150532252)
  • Human Frontiers Science Program (RGP0036//2014)
  • Region Aquitaine
  • Agence Nationale de la Recherche (ANR Blanc NeuroNutriSens ANR-13-BSV4-0006, BRAIN ANR-10-LABX-0043)
  • Fyssen Foundation
  • CONACyT
  • EMBO
  • FRM
  • French Ministry of Higher Education and Research
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
Keywords
CB1 receptor, astrocytes, D-serine, NMDA receptor, object recognition memory, long-term potentiation, hippocampus, astrocyte-neuron communication, synaptic plasticity, calcium signaling
MeSH terms
Animals, Astrocytes, Hippocampus, Memory, Neuronal Plasticity, Neurons, Serine, Synapses, Receptors, N-Methyl-D-Aspartate, Long-Term Potentiation, Mice, Knockout, Recognition, Psychology, Receptor, Cannabinoid, CB1, Mice, CA1 Region, Hippocampal, CA3 Region, Hippocampal, In Vitro Techniques

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