2008
Postsynaptic Density-95 (PSD-95) and Calcineurin Control the Sensitivity of N-Methyl-d-aspartate Receptors to Calpain Cleavage in Cortical Neurons
Yuen EY, Ren Y, Yan Z. Postsynaptic Density-95 (PSD-95) and Calcineurin Control the Sensitivity of N-Methyl-d-aspartate Receptors to Calpain Cleavage in Cortical Neurons. Molecular Pharmacology 2008, 74: 360-370. PMID: 18445709, PMCID: PMC2858625, DOI: 10.1124/mol.108.046813.Peer-Reviewed Original ResearchConceptsN-methyl-D-aspartate receptorsCortical neuronsNR2B subunitExtrasynaptic N-methyl-D-aspartate receptorsPermeable glutamate receptorsProtein postsynaptic densityTransient forebrain ischemiaCultured cortical neuronsDependent protease calpainSynaptic NMDAR responsesPostsynaptic density-95Calpain-dependent mannerWhole-cell currentsExcitotoxic conditionsForebrain ischemiaCortical slicesNMDA treatmentNMDAR currentsNMDAR responsesNMDAR functionSubstrates of calpainGlutamate receptorsNeuronal excitabilityCalpain cleavageDensity-95
2007
The Phosphorylation State of GluR1 Subunits Determines the Susceptibility of AMPA Receptors to Calpain Cleavage*
Yuen EY, Liu W, Yan Z. The Phosphorylation State of GluR1 Subunits Determines the Susceptibility of AMPA Receptors to Calpain Cleavage*. Journal Of Biological Chemistry 2007, 282: 16434-16440. PMID: 17428797, DOI: 10.1074/jbc.m701283200.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCalcium-Calmodulin-Dependent Protein Kinase Type 2Calcium-Calmodulin-Dependent Protein KinasesCalpainCells, CulturedCerebral CortexEnzyme ActivationNeuronsPhosphoprotein PhosphatasesPhosphorylationProtein Phosphatase 1Protein Processing, Post-TranslationalProtein SubunitsRatsRats, Sprague-DawleyReceptors, AMPATime FactorsConceptsCalpain cleavagePhosphorylation stateProteolytic cleavageDependent protein kinase IITerminal fusion proteinEffect of phosphorylationProtein phosphatase 1/2AProtein kinase IIPhosphorylation sitesProtein kinaseCalpain cleavage sitesGluR1 subunitKinase IIFusion proteinActive CaMKIIAMPAR currentsCalpain regulationCleavage siteIsoxazoleproprionic acid (AMPA) receptorSubunitsIonotropic glutamate receptorsN-methyl-D-aspartate receptorsPhysiological studiesExcitatory synaptic transmissionAMPA receptor currentsCalpain regulation of AMPA receptor channels in cortical pyramidal neurons
Yuen EY, Gu Z, Yan Z. Calpain regulation of AMPA receptor channels in cortical pyramidal neurons. The Journal Of Physiology 2007, 580: 241-254. PMID: 17234699, PMCID: PMC2075435, DOI: 10.1113/jphysiol.2006.122754.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlotting, WesternCalpainCells, CulturedCerebral CortexElectrophysiologyEndocytosisGerbillinaeImmunohistochemistryMaleMAP Kinase Kinase 2NeuronsNeuroprotective AgentsPatch-Clamp TechniquesPyramidal CellsRatsRats, Sprague-DawleyReceptors, AMPAReceptors, Cell SurfaceReceptors, N-Methyl-D-AspartateStimulation, ChemicalSynapsesSynaptic TransmissionConceptsCortical pyramidal neuronsNMDA receptorsPyramidal neuronsAMPA receptorsNMDA treatmentCalpain inhibitorsIschaemia-induced depressionFast excitatory synaptic transmissionTransient ischemic insultAMPAR-mediated currentsExcitatory synaptic transmissionCalpain-dependent mannerAMPA receptor channelsSelective calpain inhibitorsExcitotoxic conditionsIschemic animalsIschemic insultNeuronal excitotoxicityAMPAR currentsAMPA responsesCortical culturesExtracellular glutamateGlutamate receptorsGlutamate triggersNeuronal excitability
2005
Regulation of N-Methyl-D-aspartate Receptors by Calpain in Cortical Neurons*
Wu HY, Yuen EY, Lu YF, Matsushita M, Matsui H, Yan Z, Tomizawa K. Regulation of N-Methyl-D-aspartate Receptors by Calpain in Cortical Neurons*. Journal Of Biological Chemistry 2005, 280: 21588-21593. PMID: 15790561, DOI: 10.1074/jbc.m501603200.Peer-Reviewed Original ResearchConceptsN-methyl-D-aspartate receptorsNMDA receptorsNMDAR currentsCortical neuronsCalpain inhibitorsCultured cortical neuronsCortical pyramidal neuronsDynamin inhibitory peptideFunction of NMDARsInhibitory peptidesInvolvement of calpainNMDAR-mediated currentsNMDAR channel functionSelective calpain inhibitorsNMDAR internalizationNMDAR overstimulationNeuroprotective mechanismsPyramidal neuronsNMDA treatmentBath applicationIntracellular injectionNR2B subunitCalcium entryPathologic functionsProlonged treatment