Cited by 506Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersNeuroinflammation and Neurodegeneration Mechanisms

Astrocytic neuroligins control astrocyte morphogenesis and synaptogenesis

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Stogsdill, Jeff A., Ramirez, Juan, Liu, Di, Kim, Yong Ho, Baldwin, Katherine T., Enustun, Eray, Ejikeme, Tiffany, Ji, Ru-Rong +1 more·2017·Nature

Abstract

Astrocytes are complex glial cells with numerous fine cellular processes that infiltrate the neuropil and interact with synapses. The mechanisms that control the establishment of astrocyte morphology are unknown, and it is unclear whether impairing astrocytic infiltration of the neuropil alters synaptic connectivity. Here we show that astrocyte morphogenesis in the mouse cortex depends on direct contact with neuronal processes and occurs in parallel with the growth and activity of synaptic circuits. The neuroligin family cell adhesion proteins NL1, NL2, and NL3, which are expressed by cortical astrocytes, control astrocyte morphogenesis through interactions with neuronal neurexins. Furthermore, in the absence of astrocytic NL2, the formation and function of cortical excitatory synapses are diminished, whereas inhibitory synaptic function is enhanced. Our findings highlight a previously undescribed mechanism of action for neuroligins and link astrocyte morphogenesis to synaptogenesis. Because neuroligin mutations have been implicated in various neurological disorders, these findings also point towards an astrocyte-based mechanism of neural pathology.

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Authors
Stogsdill, J. A., Ramirez, J., Liu, D., Kim, Y. H., Baldwin, K. T., Enustun, E., Ejikeme, T., Ji, R.-R., & Eroglu, C.
Affiliations
  • Duke Medical Center (US)
  • Duke University (US)
Venue
Nature
Published
2017-11
Volume
551
Issue
7679
Pages
192-197
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2767960938
Cited by
506
References
41
Citations by year
2026: 50 · 2025: 67 · 2024: 72 · 2023: 79 · 2022: 61 · 2021: 52 · 2020: 59 · 2019: 46 · 2018: 19 · 2017: 1
FWCI
16.72
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Hartwell Foundation
  • National Institute for Health and Care Research
  • National Institutes of Health
  • National Institute on Drug Abuse (R01DA031833)
  • National Institute of General Medical Sciences (T32GM007184)
  • National Institute of Neurological Disorders and Stroke (F31NS092419)
  • National Institute of Dental and Craniofacial Research (R01DE022743)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
astrocytes, neuroligins, synaptogenesis, neurexin, adhesion molecules, cortical astrocytes, excitatory synapses, inhibitory synapses, astrocyte-neuron interaction, synaptic density, neurological disorders
MeSH terms
Animals, Astrocytes, Cerebral Cortex, Neural Inhibition, Receptors, Cell Surface, Synapses, Cell Adhesion Molecules, Neuronal, Neural Cell Adhesion Molecules, Cell Shape, Mice

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