ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2019
Elfn1-Induced Constitutive Activation of mGluR7 Determines Frequency-Dependent Recruitment of Somatostatin Interneurons.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed, 66 citations in OpenAlex.
- Structural basis for modulation of group III mGlu receptors by transsynaptic interactions.Science advances · 2026Article
- Article
- Negative allosteric modulation of mGlu7 disrupts fear memory reconsolidation and glutamatergic signaling in rat and human brain tissue.Molecular psychiatry · 2026Article
- One-step induction of human GABAergic neurons promotes presynaptic development & synapse maturation.bioRxiv : the preprint server for biology · 2025Article
- Trans-synaptic Interaction with mGluR6 Contributes to ELFN1 Presynaptic Enrichment in Rod Photoreceptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Profiling the Impact of mGluACS chemical neuroscience · 2025Article
- [High expression of ELFN1 is a prognostic biomarker and promotes proliferation and metastasis of colorectal cancer cells].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2025Article
- Trans-synaptic modulation of cholinergic circuits tunes opioid reinforcement.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Defective glycosylation and ELFN1 binding of mGluR6 congenital stationary night blindness mutants.Life science alliance · 2025Article
- Distinct autoregulatory roles of ELFN1 intracellular and extracellular domains on membrane trafficking, synaptic localization, and dimerization.The Journal of biological chemistry · 2025Article
- Emerging modes of regulation of neuromodulatory G protein-coupled receptors.Trends in neurosciences · 2024Review
- Novel pharmacological targets for GABAergic dysfunction in ADHD.Neuropharmacology · 2024Review
- Different states of synaptic vesicle priming explain target cell type-dependent differences in neurotransmitter release.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Therapeutic Potential for Metabotropic Glutamate Receptor 7 Modulators in Cognitive Disorders.Molecular pharmacology · 2024Review
- Homo- and hetero-dimeric subunit interactions set affinity and efficacy in metabotropic glutamate receptors.Nature communications · 2023Article
- Post-synaptic GABACell reports · 2023Article
- Presynaptic Kainate Receptors onto Somatostatin Interneurons Are Recruited by Activity throughout Development and Contribute to Cortical Sensory Adaptation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023Article
- Article
- GRM7 gene mutations and consequences for neurodevelopment.Pharmacology, biochemistry, and behavior · 2023Review
- Supplementary Pharmacotherapy for the Behavioral Abnormalities Caused by Stressors in Humans, Focused on Post-Traumatic Stress Disorder (PTSD).Journal of clinical medicine · 2023Article
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Excitatory synapses onto somatostatin (SOM) interneurons show robust short-term facilitation. This hallmark feature of SOM interneurons arises from a low initial release probability that regulates the recruitment of interneurons in response to trains of action potentials. Previous work has shown that Elfn1 (extracellular leucine rich repeat and fibronectin Type III domain containing 1) is necessary to generate facilitating synapses onto SOM neurons by recruitment of two separate presynaptic components: mGluR7 (metabotropic glutamate receptor 7) and GluK2-KARs (kainate receptors containing glutamate receptor, ionotropic, kainate 2). Here, we identify how a transsynaptic interaction between Elfn1 and mGluR7 constitutively reduces initial release probability onto mouse cortical SOM neurons. Elfn1 produces glutamate-independent activation of mGluR7 via presynaptic clustering, resulting in a divergence from the canonical "autoreceptor" role of Type III mGluRs, and substantially altering synaptic pharmacology. This structurally induced determination of initial release probability is present at both layer 2/3 and layer 5 synapses. In layer 2/3 SOM neurons, synaptic facilitation in response to spike trains is also dependent on presynaptic GluK2-KARs. In contrast, layer 5 SOM neurons do not exhibit presynaptic GluK2-KAR activity at baseline and show reduced facilitation. GluK2-KAR engagement at synapses onto layer 5 SOM neurons can be induced by calmodulin activation, suggesting that synaptic function can be dynamically regulated. Thus, synaptic facilitation onto SOM interneurons is mediated both by constitutive mGluR7 recruitment by Elfn1 and regulated GluK2-KAR recruitment, which determines the extent of interneuron recruitment in different cortical layers.
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