Epac2 induces synapse remodeling and depression and its disease-associated forms alter spines
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Dynamic remodeling of spiny synapses is crucial for cortical circuit development, refinement and plasticity, whereas abnormal morphogenesis is associated with neuropsychiatric disorders. We found that activation of Epac2, a PKA-independent cAMP target and Rap guanine-nucleotide exchange factor (GEF), in cultured rat cortical neurons induced spine shrinkage, increased spine motility, removed synaptic GluR2/3-containing AMPA receptors and depressed excitatory transmission, whereas its inhibition promoted spine enlargement and stabilization. Epac2 was required for dopamine D1-like receptor-dependent spine shrinkage and GluR2 removal from spines. Epac2 interaction with neuroligin promoted its membrane recruitment and enhanced its GEF activity. Rare missense mutations in the EPAC2 (also known as RAPGEF4) gene, previously found in individuals with autism, affected basal and neuroligin-stimulated GEF activity, dendritic Rap signaling, synaptic protein distribution and spine morphology. Thus, we identify a previously unknown mechanism that promotes dynamic remodeling and depression of spiny synapses, disruption of which may contribute to some aspects of disease.
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NLGN3 complexes with Epac2 and enhances its signaling activity.
“Notably, NLGN3 also complexes with Epac2 and enhances its signaling activity36”
From Dendritic spine pathology in neuropsychiatric disorders (2011) · cites this paper as [36]
Epac2 missense mutations increase dendritic spine number and area.
“Epac2 missense mutations increase dendritic spine number (Epac2-T809S) and area (Epac2-V646F)36.”
From Dendritic spine pathology in neuropsychiatric disorders (2011) · cites this paper as [36]
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Epac activation initiates associative odor preference memories in the rat pupPreprint
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- Authors
- Woolfrey, K. M., Srivastava, D. P., Photowala, H., Yamashita, M., Barbolina, M. V., Cahill, M. E., Xie, Z., Jones, K. A., Quilliam, L. A., Prakriya, M., & Penzes, P.
- Affiliations
- Northwestern University (US)
- University of Illinois Chicago (US)
- Indiana University Indianapolis (US)
- Corresponding author
- Penzes, Peter
- ORCID
- Venue
- Nature Neuroscience
- Published
- 2009-09-06
- Volume
- 12
- Issue
- 10
- Pages
- 1275-1284
- ISSN
- 1097-6256 (ISSN-L)
- 1546-1726
- PMC
- PMC2754861
- OpenAlex
- W2089741501
- Cited by
- 161
- References
- 48
- Citations by year
- 2026: 5 · 2024: 4 · 2023: 6 · 2022: 6 · 2021: 5 · 2020: 9 · 2019: 8 · 2018: 9 · 2017: 8 · 2016: 15 · 2015: 20 · 2014: 10 · 2013: 12 · 2012: 17
- FWCI
- 6.08
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Research Portal (King's College London) (submittedVersion)
- IUScholarWorks (Indiana University) (submittedVersion)
- Funders
- National Institute of Mental Health (MH 071316, R56MH071316, R01MH071316)
- National Cancer Institute (R01CA108647, CA108647)
- National Institute of Neurological Disorders and Stroke (R01NS057499, NS057499, R56NS057499)
- 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 › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Keywords
- Epac2, cAMP signaling, dopamine D1 receptor, dopamine D5 receptor, dendritic spine remodeling, neuroligins, excitatory synaptic transmission, autism spectrum disorder, missense mutations, cortical neurons, synaptic plasticity
- MeSH terms
- Animals, Cell Movement, Cells, Cultured, Chlorocebus aethiops, Cerebral Cortex, Depression, Dopamine, Dose-Response Relationship, Drug, Embryo, Mammalian, Gene Expression Regulation, Humans, Membrane Potentials, Synaptic Transmission, Neurons, Synapses, Theophylline, Transfection, Cell Adhesion Molecules, Rats, Sprague-Dawley, Point Mutation, Receptors, Glutamate, Patch-Clamp Techniques, Guanine Nucleotide Exchange Factors, rap1 GTP-Binding Proteins, RNA, Small Interfering, Immunoprecipitation, Dendritic Spines, Green Fluorescent Proteins, Rats
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