2015
The multifaceted subventricular zone astrocyte: From a metabolic and pro-neurogenic role to acting as a neural stem cell
Platel JC, Bordey A. The multifaceted subventricular zone astrocyte: From a metabolic and pro-neurogenic role to acting as a neural stem cell. Neuroscience 2015, 323: 20-28. PMID: 26546469, PMCID: PMC4821790, DOI: 10.1016/j.neuroscience.2015.10.053.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsMeSH KeywordsAnimalsAstrocytesBrainGlutamic AcidHumansNeural Stem CellsNeurogenesisNeuronsStem Cell NicheConceptsVentricular-subventricular zoneNeural progenitor cellsPro-neurogenic roleHippocampal dentate gyrusNeural stem cellsSubgranular zoneNewborn neuronsNeurogenic propertiesDentate gyrusNew neuronsLateral ventricleAdult brainMature astrocytesTranscription factor expressionNeurogenic fateNeurophysiological characteristicsFactor expressionAstrocytesBlood vesselsProgenitor cellsMetabolic couplingSurvival cuesNeuronsStem cellsCells
2012
Neural Progenitor Cells Regulate Capillary Blood Flow in the Postnatal Subventricular Zone
Lacar B, Herman P, Platel JC, Kubera C, Hyder F, Bordey A. Neural Progenitor Cells Regulate Capillary Blood Flow in the Postnatal Subventricular Zone. Journal Of Neuroscience 2012, 32: 16435-16448. PMID: 23152626, PMCID: PMC3520061, DOI: 10.1523/jneurosci.1457-12.2012.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsAnimals, NewbornAstrocytesCalcium SignalingCapillariesCerebral VentriclesCerebrovascular CirculationElectric StimulationElectroporationFemaleFluorescent Antibody TechniqueImage Processing, Computer-AssistedLaser-Doppler FlowmetryMaleMiceMuscle TonusMuscle, Smooth, VascularNeural Stem CellsPericytesVasoconstrictionVasodilationConceptsNeural progenitor cellsSubventricular zoneB cellsBlood flowSVZ cellsPurinergic receptorsPostnatal subventricular zoneVascular responsesCapillary constrictionTransgenic miceElectrical stimulationCalcium increaseBlood flow increasesLaser Doppler flowmetryCapillary blood flowAstrocyte-like cellsReceptor agonist UTPNeonatal electroporationNeurometabolic couplingIntraventricular injectionVasodilating factorsAcute slicesYoung miceDoppler flowmetryHemodynamic responsePreparation of acute subventricular zone slices for calcium imaging.
Lacar B, Young SZ, Platel JC, Bordey A. Preparation of acute subventricular zone slices for calcium imaging. Journal Of Visualized Experiments 2012, e4071. PMID: 23023088, PMCID: PMC3490239, DOI: 10.3791/4071.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsCell typesSVZ cellsProgenitor cellsNeurogenic zonesSubventricular zoneFluo-4 AM dyeNeural progenitor cellsIntermediate progenitor cellsExtracellular signalsDiffusible signalsIntercellular signalingSVZ cell typesTime-lapse moviesCalcium indicator dyeCalcium activityIndividual cellsRostral-caudal axisNeuroblast migrationThree-dimensional arrangementAdult hippocampal subgranular zonePostnatal brainAdhesion moleculesHippocampal subgranular zoneMature astrocytesNeuroblasts
2011
Gap junction‐mediated calcium waves define communication networks among murine postnatal neural progenitor cells
Lacar B, Young SZ, Platel J, Bordey A. Gap junction‐mediated calcium waves define communication networks among murine postnatal neural progenitor cells. European Journal Of Neuroscience 2011, 34: 1895-1905. PMID: 22098557, PMCID: PMC3237798, DOI: 10.1111/j.1460-9568.2011.07901.x.Peer-Reviewed Original ResearchConceptsNeural progenitor cellsNeurogenic nicheB2 cellsBlood vesselsCalcium wavesPurinergic receptor blockerProgenitor cellsPostnatal neurogenic nichesFunctional couplingPostnatal neural progenitor cellsGap junction blockersGap junction protein connexin 43Neonatal electroporationNiche astrocytesReceptor blockersProtein connexin 43Intercellular calcium wavesSubventricular zoneCells persistJunction blockersB1 cellsB cellsDye couplingDistinct entityConnexin 43Single-cell Tsc1 knockout during corticogenesis generates tuber-like lesions and reduces seizure threshold in mice
Feliciano DM, Su T, Lopez J, Platel JC, Bordey A. Single-cell Tsc1 knockout during corticogenesis generates tuber-like lesions and reduces seizure threshold in mice. Journal Of Clinical Investigation 2011, 121: 1596-1607. PMID: 21403402, PMCID: PMC3069783, DOI: 10.1172/jci44909.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAstrocytesBase SequenceCell SizeCerebral CortexDisease Models, AnimalDNA PrimersFemaleGene Knockout TechniquesMiceMice, 129 StrainMice, Inbred BALB CMice, Inbred C57BLMice, KnockoutMice, Mutant StrainsMice, TransgenicPregnancySeizuresTOR Serine-Threonine KinasesTuberous SclerosisTuberous Sclerosis Complex 1 ProteinTumor Suppressor ProteinsConceptsTuberous sclerosis complexSeizure thresholdNeuronal populationsSigns of gliosisLower seizure thresholdContribution of astrocytesDiscrete neuronal populationsAutosomal dominant disorderHeterotopic nodulesCortical hyperexcitabilityCortical tubersCortical lesionsGlial reactivityIntractable seizuresCortical malformationsSoma sizeAnimal modelsTSC1 gene productAffected neuronsDendritic treeGiant cellsUtero electroporationMutant miceLesion formationMammalian target
2010
Function of NMDA receptors activated by astrocytic glutamate on postnatal neurogenesis
Platel JC, Bordey A. Function of NMDA receptors activated by astrocytic glutamate on postnatal neurogenesis. Médecine/sciences 2010, 26: 675-677. PMID: 20819695, DOI: 10.1051/medsci/2010268-9675.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsProstaglandin E2 induces glutamate release from subventricular zone astrocytes.
Dave KA, Platel JC, Huang F, Tian D, Stamboulian-Platel S, Bordey A. Prostaglandin E2 induces glutamate release from subventricular zone astrocytes. Neuron Glia Biology 2010, 6: 201-7. PMID: 21211110, DOI: 10.1017/s1740925x10000244.Peer-Reviewed Original ResearchConceptsAmbient glutamate levelsProstaglandin E2Subventricular zoneGlutamate releaseAstrocyte-like cellsGlutamate levelsGramicidin-perforated patch-clamp techniquesIntracellular Ca2Application of PGE2Aspartate receptor channelsPatch-clamp techniqueLateral ventricleSVZ cellsPGE2 releaseChoroid plexusMature astrocytesNeuroblast survivalEnzyme immunoassayReceptor channelsAstrocytesE2Ca2CellsReleaseLesser extentAstroglial cells in the external granular layer are precursors of cerebellar granule neurons in neonates
Silbereis J, Heintz T, Taylor MM, Ganat Y, Ment LR, Bordey A, Vaccarino F. Astroglial cells in the external granular layer are precursors of cerebellar granule neurons in neonates. Molecular And Cellular Neuroscience 2010, 44: 362-373. PMID: 20470892, PMCID: PMC2900521, DOI: 10.1016/j.mcn.2010.05.001.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornAstrocytesBasic Helix-Loop-Helix Transcription FactorsBeta-GalactosidaseCell LineageCerebellumGenes, ReporterGlial Fibrillary Acidic ProteinGreen Fluorescent ProteinsIntegrasesMiceMice, Inbred C57BLMice, TransgenicNeurogenesisNeuronsPromoter Regions, GeneticStem CellsTime FactorsConceptsExternal granule cell layerGranule cell precursorsInternal granule cell layerGranule cell layerGranule cellsRhombic lipAstroglial cellsProtein expression profilesGlial fibrillary acidic protein promoterCerebellar granule cell precursorsHuman glial fibrillary acidic protein promoterEmbryonic rhombic lipInducible Cre recombinaseNeuronal progenitor cellsReporter proteinFirst postnatal weekNeural stem cell markersLate embryogenesisCellular plasticityImmature granule cellsEarly postnatal developmentCell layerReporter geneCerebellar granule neuronsStem cell markersNMDA Receptors Activated by Subventricular Zone Astrocytic Glutamate Are Critical for Neuroblast Survival Prior to Entering a Synaptic Network
Platel JC, Dave KA, Gordon V, Lacar B, Rubio ME, Bordey A. NMDA Receptors Activated by Subventricular Zone Astrocytic Glutamate Are Critical for Neuroblast Survival Prior to Entering a Synaptic Network. Neuron 2010, 65: 859-872. PMID: 20346761, PMCID: PMC2861893, DOI: 10.1016/j.neuron.2010.03.009.Peer-Reviewed Original ResearchConceptsAdult-born neuronsNMDA receptorsNMDAR activitySynaptic networksNeuroblast survivalGlutamate release machineryAstrocyte-like cellsLoss of neuroblastsNeonatal electroporationSpecialized astrocytesAstrocytic glutamateOlfactory bulbVesicular releaseRelease machineryReceptorsNeuroblastsNeuronsIntercellular mechanismsSurvivalGlutamateNeuroblast apoptosisAstrocytesNeurogenesisNeurotransmittersSVZThe stem cell journey: From paradise to purgatory
Bordey A. The stem cell journey: From paradise to purgatory. Neuropharmacology 2010, 58: 833-834. PMID: 20146927, DOI: 10.1016/j.neuropharm.2010.02.004.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus Statements
2008
The astrocyte odyssey
Wang DD, Bordey A. The astrocyte odyssey. Progress In Neurobiology 2008, 86: 342-367. PMID: 18948166, PMCID: PMC2613184, DOI: 10.1016/j.pneurobio.2008.09.015.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsAdult neurogenic zonesFunction of astrocytesAstrocytic calcium wavesPopulation of astrocytesDifferent molecular identitiesNeural stem cellsGlutamate releaseNeurogenic zonesNeurogenic nicheNeuronal activityNervous systemStem cell characteristicsAstrocytesNeuronsCalcium wavesVivo roleSupport cellsStem cellsEqual numberCellsDiverse populationsMolecular identityCell characteristicsPioneer discoveriesCentral player
2007
GABA and glutamate signaling: homeostatic control of adult forebrain neurogenesis
Platel JC, Lacar B, Bordey A. GABA and glutamate signaling: homeostatic control of adult forebrain neurogenesis. Journal Of Molecular Histology 2007, 38: 303-311. PMID: 17554632, PMCID: PMC2556597, DOI: 10.1007/s10735-007-9103-8.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsSubventricular zoneOlfactory bulb interneuronsGABAergic signalingGlutamate receptorsBulb interneuronsForebrain neurogenesisAMPA/kainate receptorsMetabotropic glutamate receptorsNeurogenic subventricular zoneRole of glutamateHomeostatic controlIonotropic glutamate receptorsEmbryonic cortical developmentSVZ neuroblastsNeurotransmitter GABASVZ cellsCortical developmentKainate receptorsGABA transporter subtypesNeurotransmitter glutamateGABA clearanceGABATransporter subtypesReceptorsInterneurons
2006
GFAP‐expressing cells in the postnatal subventricular zone display a unique glial phenotype intermediate between radial glia and astrocytes
Liu X, Bolteus AJ, Balkin DM, Henschel O, Bordey A. GFAP‐expressing cells in the postnatal subventricular zone display a unique glial phenotype intermediate between radial glia and astrocytes. Glia 2006, 54: 394-410. PMID: 16886203, DOI: 10.1002/glia.20392.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid Transport System X-AGAnimalsAnimals, NewbornAstrocytesBiomarkersCell DifferentiationCell ShapeConnexinsEpendymaGlial Fibrillary Acidic ProteinGlutamic AcidGreen Fluorescent ProteinsMembrane PotentialsMiceMice, TransgenicOrgan Culture TechniquesPatch-Clamp TechniquesPhenotypePotassiumPotassium ChannelsRecombinant Fusion ProteinsStem CellsTelencephalonConceptsGlial fibrillary acidic proteinPostnatal subventricular zoneSubventricular zoneGFAP-expressing cellsRadial gliaAstroglial marker glial fibrillary acidic proteinGlial propertiesEpendymal cellsGlutamate transportersGLT-1 glutamate transporterMarker glial fibrillary acidic proteinAMPA-type glutamate receptorsFunctional glutamate transportersFibrillary acidic proteinHuman glial fibrillary acidic proteinAdult subventricular zoneConnexin 43 expressionGap junction couplingNeural stem cellsMicroM Ba2Acute slicesAstrocytic functionsGlutamate receptorsGlial phenotypeClamp recordings
2004
GABA Release and Uptake Regulate Neuronal Precursor Migration in the Postnatal Subventricular Zone
Bolteus AJ, Bordey A. GABA Release and Uptake Regulate Neuronal Precursor Migration in the Postnatal Subventricular Zone. Journal Of Neuroscience 2004, 24: 7623-7631. PMID: 15342728, PMCID: PMC6729616, DOI: 10.1523/jneurosci.1999-04.2004.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAstrocytesBicucullineBiological TransportBrainCalcium SignalingCell MovementGABA Plasma Membrane Transport ProteinsGABA-A Receptor AgonistsGamma-Aminobutyric AcidMass SpectrometryMembrane Transport ProteinsMiceMicroscopy, VideoNeuronsPatch-Clamp TechniquesPotassiumReceptors, GABA-AStem CellsConceptsAstrocyte-like cellsSubventricular zoneNeuronal precursorsPostnatal subventricular zoneNeuronal precursor migrationCell migrationPrecursor migrationPresence of bicucullineEnhancement of GABAAnterior subventricular zoneInhibition of GABARostral migratory streamAmbient GABA levelsApplication of GABASagittal brain slicesAntagonist bicucullineGABA releaseEndogenous GABAGABA levelsBrain slicesAdult miceGABA transporterMigratory streamGABACell depolarization
2001
Electrophysiological Characteristics of Reactive Astrocytes in Experimental Cortical Dysplasia
Bordey A, Lyons SA, Hablitz JJ, Sontheimer H. Electrophysiological Characteristics of Reactive Astrocytes in Experimental Cortical Dysplasia. Journal Of Neurophysiology 2001, 85: 1719-1731. PMID: 11287494, DOI: 10.1152/jn.2001.85.4.1719.Peer-Reviewed Original ResearchConceptsGap junction couplingReactive gliosisFreeze lesionGlial fibrillary acidic protein immunoreactivityWhole-cell patch-clamp recordingsCell patch-clamp recordingsExperimental cortical dysplasiaCortical layers IPatch-clamp recordingsPostnatal day 16Reduced gap junction couplingNormal neuronal functionDysplastic neocortexP24 ratsDysplastic cortexReactive astrocytesCortical dysplasiaNeuronal dysfunctionProtein immunoreactivityElectrophysiological characteristicsAstrocytesChannel expressionNeuronal functionMicrosulcusLayer I
2000
Reactive astrocytes show enhanced inwardly rectifying K+ currents in situ
Bordey A, Hablitz JJ, Sontheimer H. Reactive astrocytes show enhanced inwardly rectifying K+ currents in situ. Neuroreport 2000, 11: 3151-3155. PMID: 11043540, DOI: 10.1097/00001756-200009280-00022.Peer-Reviewed Original ResearchIon channel expression by astrocytes in situ: Comparison of different CNS regions
Bordey A, Sontheimer H. Ion channel expression by astrocytes in situ: Comparison of different CNS regions. Glia 2000, 30: 27-38. PMID: 10696142, DOI: 10.1002/(sici)1098-1136(200003)30:1<27::aid-glia4>3.0.co;2-#.Peer-Reviewed Original ResearchConceptsBergmann glial cellsIon channel complementGlial cellsIon channel expressionDifferent CNS regionsCNS regionsChannel expressionPercentage of astrocytesTransient A-typeCerebellar Bergmann glial cellsChannel complementPatch-clamp recordingsVoltage-activated currentsPostnatal day 17Whole-cell currentsIon channelsVoltage-gated ion channelsBrain slicesRat astrocytesAstrocytesDay 17Low input resistanceInput resistanceCNSInitial recording
1999
Differential Inhibition of Glial K+ Currents by 4-AP
Bordey A, Sontheimer H. Differential Inhibition of Glial K+ Currents by 4-AP. Journal Of Neurophysiology 1999, 82: 3476-3487. PMID: 10601476, DOI: 10.1152/jn.1999.82.6.3476.Peer-Reviewed Original ResearchMeSH Keywords4-AminopyridineAction PotentialsAnimalsAstrocytesCells, CulturedDelayed Rectifier Potassium ChannelsElectrophysiologyLarge-Conductance Calcium-Activated Potassium ChannelsNeurogliaPatch-Clamp TechniquesPotassium Channel BlockersPotassium ChannelsPotassium Channels, Calcium-ActivatedPotassium Channels, Inwardly RectifyingPotassium Channels, Voltage-GatedRatsRats, Sprague-DawleySpinal CordTetraethylammoniumConceptsAcute spinal cord slicesSpinal cord slicesConcentration-dependent blockPotassium channel typesType currentsDose-dependent inhibitorNeuronal action potentialsCord slicesSpinal cordChannel blockersEpileptiform dischargesBrain slicesAction potentialsHomeostatic functionsA-currentAstrocytesDifferential inhibitionRepolarizationMembrane potentialChannel typesSlicesBlockersGlialCord
1998
Passive Glial Cells, Fact or Artifact?
Bordey A, Sontheimer H. Passive Glial Cells, Fact or Artifact? The Journal Of Membrane Biology 1998, 166: 213-222. PMID: 9843595, DOI: 10.1007/s002329900463.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsVoltage-activated currentsPassive astrocytesVoltage-dependent outwardCell accessAcute tissue slicesBath Ca2Glial cellsRat hippocampusSlice recordingsCultured astrocytesAstrocytesPipette solutionEffect of Ca2Tissue slicesMembrane capacitanceSuch cellsSubpopulationsCellsTransient maskingConcentration of Ca2Ca2SuperfusionHippocampusDoseProperties of human glial cells associated with epileptic seizure foci
Bordey A, Sontheimer H. Properties of human glial cells associated with epileptic seizure foci. Epilepsy Research 1998, 32: 286-303. PMID: 9761328, DOI: 10.1016/s0920-1211(98)00059-x.Peer-Reviewed Original ResearchConceptsSeizure focusGlial cellsMesio-temporal lobe epilepsyWhole-cell patch-clamp recordingsLucifer YellowControl rat hippocampusPathophysiology of seizuresSlow action potentialsCurrent-clamp studiesGFAP-positive astrocytesEpileptic seizure fociPatch-clamp recordingsHuman glial cellsLobe epilepsyAcute slicesRat hippocampusEpilepsy patientsClamp studiesRat astrocytesAstrocytesIntermediate filaments GFAPNormal astrocytesAction potentialsPhysiological propertiesBranched processes