Dlg5 Regulates Dendritic Spine Formation and Synaptogenesis by Controlling Subcellular N-Cadherin Localization
Copyright policy )Dlg5 Regulates Dendritic Spine Formation and Synaptogenesis by Controlling Subcellular N-Cadherin Localization
Most excitatory synapses in the mammalian brain are formed on dendritic spines, and spine density has a profound impact on synaptic transmission, integration, and plasticity. Membrane-associated guanylate kinase (MAGUK) proteins are intracellular scaffolding proteins with well established roles in synapse function. However, whether MAGUK proteins are required for the formation of dendritic spines in vivo is unclear. We isolated a novel disc large-5 (Dlg5) allele in mice, Dlg5(LP), which harbors a missense mutation in the DLG5 SH3 domain, greatly attenuating its ability to interact with the DLG5 GUK domain. We show here that DLG5 is a MAGUK protein that regulates spine formation, synaptogenesis, and synaptic transmission in cortical neurons. DLG5 regulates synaptogenesis by enhancing the cell surface localization of N-cadherin, revealing a key molecular mechanism for regulating the subcellular localization of this cell adhesion molecule during synaptogenesis.
- Johns Hopkins University United States
- Seoul National University Korea (Republic of)
- Johns Hopkins Medicine United States
- University of California, San Francisco United States
- Columbia University United States
Male, 1.1 Normal biological development and functioning, Cells, Dendritic Spines, Neurogenesis, Primary Cell Culture, Mutation, Missense, Medical and Health Sciences, Synaptic Transmission, Mice, Underpinning research, Genetics, Animals, N-cadherin, Cells, Cultured, beta Catenin, Cerebral Cortex, Cultured, synaptogenesis, Neurology & Neurosurgery, dendritic spine, Psychology and Cognitive Sciences, Neurosciences, Membrane Proteins, Cadherins, Dlg5, Neurological, Mutation, Synapses, Missense, Guanylate Kinases
Male, 1.1 Normal biological development and functioning, Cells, Dendritic Spines, Neurogenesis, Primary Cell Culture, Mutation, Missense, Medical and Health Sciences, Synaptic Transmission, Mice, Underpinning research, Genetics, Animals, N-cadherin, Cells, Cultured, beta Catenin, Cerebral Cortex, Cultured, synaptogenesis, Neurology & Neurosurgery, dendritic spine, Psychology and Cognitive Sciences, Neurosciences, Membrane Proteins, Cadherins, Dlg5, Neurological, Mutation, Synapses, Missense, Guanylate Kinases
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