Pre-post synaptic alignment through neuroligin-1 tunes synaptic transmission efficiency
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Abstract
The nanoscale organization of neurotransmitter receptors regarding pre-synaptic release sites is a fundamental determinant of the synaptic transmission amplitude and reliability. How modifications in the pre- and post-synaptic machinery alignments affects synaptic currents, has only been addressed with computer modelling. Using single molecule super-resolution microscopy, we found a strong spatial correlation between AMPA receptor (AMPAR) nanodomains and the post-synaptic adhesion protein neuroligin-1 (NLG1). Expression of a truncated form of NLG1 disrupted this correlation without affecting the intrinsic AMPAR organization, shifting the pre-synaptic release machinery away from AMPAR nanodomains. Electrophysiology in dissociated and organotypic hippocampal rodent cultures shows these treatments significantly decrease AMPAR-mediated miniature and EPSC amplitudes. Computer modelling predicts that ~100 nm lateral shift between AMPAR nanoclusters and glutamate release sites induces a significant reduction in AMPAR-mediated currents. Thus, our results suggest the synapses necessity to release glutamate precisely in front of AMPAR nanodomains, to maintain a high synaptic responses efficiency.
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AMPAR clusters are juxtaposed across from the presynaptic release site.
“Of particular interest is the finding that these clusters are juxtaposed across from presynaptic release site (251, 252, 260).”
From Synaptic memory and CaMKII (2023) · cites this paper as [260]
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- Authors
- Haas, K. T., Compans, B., Letellier, M., Bartol, T. M., Grillo-Bosch, D., Sejnowski, T. J., Sainlos, M., Choquet, D., Thoumine, O., & Hosy, E.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Salk Institute for Biological Studies (US)
- Interdisciplinary Institute for Neuroscience, University of Bordeaux, UMR 5297, F-33000, Bordeaux, France
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, United States
- ORCID
- Venue
- eLife
- Publisher
- eLife Sciences Publications, Ltd
- Published
- 2018-07-25
- Volume
- 7
- ISSN
- 2050-084X (ISSN-L)
- PMC
- PMC6070337
- OpenAlex
- W2951096450
- Cited by
- 183
- References
- 59
- Citations by year
- 2026: 17 · 2025: 13 · 2024: 22 · 2023: 26 · 2022: 27 · 2021: 39 · 2020: 20 · 2019: 16 · 2018: 3
- FWCI
- 8.88
- Type
- journal article
- Language
- en
- Update notices
- correction (2020-12-16)
- Open access
- gold
- doi.org
- Licence
- Locations
- eLife (publishedVersion, cc-by)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- HAL (submittedVersion, cc-by)
- HAL Portal Artxiker (Hindustan Aeronautics Limited (India)) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Agence Nationale de la Recherche (NanoDom)
- Centre National de la Recherche Scientifique
- Fondation pour la Recherche Médicale
- H2020 European Research Council (nano-dyn-syn)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
- Keywords
- neuroligin-1, glutamate release, miniature EPSCs, hippocampal synapses
- MeSH terms
- Animals, Cells, Cultured, Female, Hippocampus, Male, Mice, Inbred C57BL, Mutation, Synaptic Transmission, Neurons, Synapses, Cell Adhesion Molecules, Neuronal, Receptors, AMPA, Excitatory Postsynaptic Potentials, Mice, Rats
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