2023
Neuronal transcriptome, tau and synapse loss in Alzheimer’s knock-in mice require prion protein
Stoner A, Fu L, Nicholson L, Zheng C, Toyonaga T, Spurrier J, Laird W, Cai Z, Strittmatter S. Neuronal transcriptome, tau and synapse loss in Alzheimer’s knock-in mice require prion protein. Alzheimer's Research & Therapy 2023, 15: 201. PMID: 37968719, PMCID: PMC10647125, DOI: 10.1186/s13195-023-01345-z.Peer-Reviewed Original ResearchConceptsSynapse lossDKI miceTau accumulationBrain immune activationNeural network dysfunctionPhospho-tau accumulationAccumulation of tauNeuronal genesInflammatory markersAD miceAβ levelsPrion proteinDystrophic neuritesImmune activationTau pathologyNeuronal gene expressionAmyloid-β OligomersGliotic reactionNetwork dysfunctionBehavioral deficitsSynaptic failureAD modelMemory impairmentAlzheimer's diseaseFunction of age
2022
Alzheimer risk gene product Pyk2 suppresses tau phosphorylation and phenotypic effects of tauopathy
Brody AH, Nies SH, Guan F, Smith LM, Mukherjee B, Salazar SA, Lee S, Lam TKT, Strittmatter SM. Alzheimer risk gene product Pyk2 suppresses tau phosphorylation and phenotypic effects of tauopathy. Molecular Neurodegeneration 2022, 17: 32. PMID: 35501917, PMCID: PMC9063299, DOI: 10.1186/s13024-022-00526-y.Peer-Reviewed Original ResearchConceptsPS19 miceTau phosphorylationDisease riskPyk2 expressionPyk2 activityHuman neuronal culturesAlzheimer's disease riskNeuro-inflammationSynapse lossTau accumulationTau pathologyMouse survivalC1q depositionT cellsAssociated pathologyMouse modelLittermate controlsMAPK activityHuman neuronsHuman tauNeuronal culturesPyk2 inhibitionVivo modelMouse brainSynaptic function
2021
Optic nerve regeneration screen identifies multiple genes restricting adult neural repair
Lindborg JA, Tran NM, Chenette DM, DeLuca K, Foli Y, Kannan R, Sekine Y, Wang X, Wollan M, Kim IJ, Sanes JR, Strittmatter SM. Optic nerve regeneration screen identifies multiple genes restricting adult neural repair. Cell Reports 2021, 34: 108777. PMID: 33657370, PMCID: PMC8009559, DOI: 10.1016/j.celrep.2021.108777.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsCRISPR-Cas SystemsDependovirusFemaleGene EditingGene Expression RegulationGenetic Association StudiesHEK293 CellsHumansInterleukinsMaleMAP Kinase Kinase KinasesMice, Inbred C57BLMice, TransgenicNerve RegenerationNeurogenesisOptic NerveOptic Nerve InjuriesRetinal Ganglion CellsSignal TransductionSTAT3 Transcription FactorConceptsOptic nerve crushRetinal ganglion cellsRegeneration-associated genesShort hairpin RNAIL-22Neural repairCentral nervous system traumaNeurological deficits persistNervous system traumaNerve crushAxonal damageAxonal regenerationGanglion cellsSystem traumaInflammatory responseCNS regenerationDeficits persistAxonal growthHairpin RNAConcurrent activationTranscription 3Cell-autonomous factorsKinase pathwaySignal transducerRepair
2020
Fyn kinase inhibition reduces protein aggregation, increases synapse density and improves memory in transgenic and traumatic Tauopathy
Tang SJ, Fesharaki-Zadeh A, Takahashi H, Nies SH, Smith LM, Luo A, Chyung A, Chiasseu M, Strittmatter SM. Fyn kinase inhibition reduces protein aggregation, increases synapse density and improves memory in transgenic and traumatic Tauopathy. Acta Neuropathologica Communications 2020, 8: 96. PMID: 32611392, PMCID: PMC7329553, DOI: 10.1186/s40478-020-00976-9.Peer-Reviewed Original ResearchConceptsRepetitive closed head injuriesMemory deficitsPhospho-tau accumulationChronic variable stressPersistent memory deficitsP301S transgenic miceClosed head injuryFyn inhibitionPassive avoidance learningFyn kinaseGlial activationPhospho-tauPresynaptic markersSynapse lossTau accumulationHead injurySynapse densityPhosphorylated tauTherapeutic benefitTransgenic miceBehavioral improvementTrauma modelTauopathiesSpatial memoryAvoidance learning
2019
Anti‐PrPC antibody rescues cognition and synapses in transgenic alzheimer mice
Cox TO, Gunther EC, Brody AH, Chiasseu MT, Stoner A, Smith LM, Haas LT, Hammersley J, Rees G, Dosanjh B, Groves M, Gardener M, Dobson C, Vaughan T, Chessell I, Billinton A, Strittmatter SM. Anti‐PrPC antibody rescues cognition and synapses in transgenic alzheimer mice. Annals Of Clinical And Translational Neurology 2019, 6: 554-574. PMID: 30911579, PMCID: PMC6414488, DOI: 10.1002/acn3.730.Peer-Reviewed Original ResearchConceptsAPP/PS1 transgenic micePS1 transgenic miceBrain antibodiesTransgenic miceDisease pathophysiologyDisease pathologyTransgenic Alzheimer's miceAlzheimer's disease pathologyAlzheimer's disease pathophysiologyHuman monoclonal antibodyPreclinical therapeutic efficacyHigh-affinity receptorAmyloid-beta oligomersLast doseTransgenic brainsPlaque pathologyAlzheimer's micePreclinical dataSynaptic damageAnti-PrPc antibodiesSynaptic densityIntraperitoneal dosingBrain biochemistryCentral synapsesTherapeutic efficacyRescue of Transgenic Alzheimer’s Pathophysiology by Polymeric Cellular Prion Protein Antagonists
Gunther EC, Smith LM, Kostylev MA, Cox TO, Kaufman AC, Lee S, Folta-Stogniew E, Maynard GD, Um JW, Stagi M, Heiss JK, Stoner A, Noble GP, Takahashi H, Haas LT, Schneekloth JS, Merkel J, Teran C, Naderi Z, Supattapone S, Strittmatter SM. Rescue of Transgenic Alzheimer’s Pathophysiology by Polymeric Cellular Prion Protein Antagonists. Cell Reports 2019, 26: 145-158.e8. PMID: 30605671, PMCID: PMC6358723, DOI: 10.1016/j.celrep.2018.12.021.Peer-Reviewed Original ResearchConceptsAlzheimer's diseaseOligomeric β-amyloid peptideAPPswe/PS1ΔE9 transgenic miceEffective brain concentrationsPotential therapeutic approachΒ-amyloid peptideBrain concentrationsSynapse lossTherapeutic approachesAlzheimer's pathophysiologyTransgenic miceScN2a cellsMemory deficitsCellular prion proteinPathophysiologyTransmissible spongiformAβOsProtein antagonistLow nanomolar affinityDiseasePrPPrion proteinNanomolar affinitySupAntagonist
2018
Alzheimer's Disease Risk Factor Pyk2 Mediates Amyloid-β-Induced Synaptic Dysfunction and Loss
Salazar SV, Cox TO, Lee S, Brody AH, Chyung AS, Haas LT, Strittmatter SM. Alzheimer's Disease Risk Factor Pyk2 Mediates Amyloid-β-Induced Synaptic Dysfunction and Loss. Journal Of Neuroscience 2018, 39: 758-772. PMID: 30518596, PMCID: PMC6343652, DOI: 10.1523/jneurosci.1873-18.2018.Peer-Reviewed Original ResearchConceptsTransgenic AD model miceAD model miceAbsence of Pyk2Synaptic dysfunctionModel miceHippocampal slicesSynaptic transmissionAlzheimer's diseaseAmyloid-β plaque pathologyHippocampal Schaffer collateral pathwayDisease riskLearning/memory deficitsDeletion of Pyk2Suppression of LTPBasal synaptic transmissionLate-onset Alzheimer's diseaseImpairment of learningSchaffer collateral pathwayAD-related synaptic dysfunctionAlzheimer's disease riskLate-onset Alzheimer's disease (LOAD) riskOnset Alzheimer's diseaseAge-dependent lossMechanism of actionSynaptic LTDSleep and EEG Power Spectral Analysis in Three Transgenic Mouse Models of Alzheimer’s Disease: APP/PS1, 3xTgAD, and Tg2576
Kent BA, Strittmatter SM, Nygaard H. Sleep and EEG Power Spectral Analysis in Three Transgenic Mouse Models of Alzheimer’s Disease: APP/PS1, 3xTgAD, and Tg2576. Journal Of Alzheimer's Disease 2018, 64: 1325-1336. PMID: 29991134, PMCID: PMC6176720, DOI: 10.3233/jad-180260.Peer-Reviewed Original Research
2017
Disease-modifying benefit of Fyn blockade persists after washout in mouse Alzheimer's model
Smith LM, Zhu R, Strittmatter SM. Disease-modifying benefit of Fyn blockade persists after washout in mouse Alzheimer's model. Neuropharmacology 2017, 130: 54-61. PMID: 29191754, PMCID: PMC5743608, DOI: 10.1016/j.neuropharm.2017.11.042.Peer-Reviewed Original ResearchConceptsAlzheimer's modelDisease-modifying effectsDisease-modifying therapiesMouse Alzheimer’s modelsTherapy withdrawalAPPswe/Investigational agentsSynapse densityDrug washoutTransgenic modelAlzheimer's diseasePersistent benefitsPersistent improvementSaracatinibFyn inhibitorMemantineLoss of benefitDiseaseSpatial memoryMemory functionWashoutTherapySymptomsMiceWeeksRegulation of axonal regeneration by the level of function of the endogenous Nogo receptor antagonist LOTUS
Hirokawa T, Zou Y, Kurihara Y, Jiang Z, Sakakibara Y, Ito H, Funakoshi K, Kawahara N, Goshima Y, Strittmatter SM, Takei K. Regulation of axonal regeneration by the level of function of the endogenous Nogo receptor antagonist LOTUS. Scientific Reports 2017, 7: 12119. PMID: 28935984, PMCID: PMC5608707, DOI: 10.1038/s41598-017-12449-6.Peer-Reviewed Original ResearchConceptsSpinal cord injuryOptic nerve crushAxonal regenerationMotor recoveryNerve crushNeural repairRetinal ganglion cell axonal regenerationAdult mammalian central nervous systemIntrinsic motor recoverySpontaneous neural repairAxonal growth inhibitorsMammalian central nervous systemCentral nervous systemNon-permissive environmentLevel of functionUntreated miceFunctional recoveryCord injuryReceptor antagonistNeuronal overexpressionNervous systemGenetic deletionViral overexpressionCrushInhibitorsProtein Tyrosine Phosphatase δ Mediates the Sema3A-Induced Cortical Basal Dendritic Arborization through the Activation of Fyn Tyrosine Kinase
Nakamura F, Okada T, Shishikura M, Uetani N, Taniguchi M, Yagi T, Iwakura Y, Ohshima T, Goshima Y, Strittmatter SM. Protein Tyrosine Phosphatase δ Mediates the Sema3A-Induced Cortical Basal Dendritic Arborization through the Activation of Fyn Tyrosine Kinase. Journal Of Neuroscience 2017, 37: 7125-7139. PMID: 28637841, PMCID: PMC6705738, DOI: 10.1523/jneurosci.2519-16.2017.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCells, CulturedCerebral CortexDendritesEnzyme ActivationFemaleGene Expression Regulation, EnzymologicMaleMiceMice, Inbred C57BLMice, KnockoutMice, TransgenicNeuronal PlasticityProtein-Tyrosine KinasesProto-Oncogene Proteins c-fynReceptor-Like Protein Tyrosine Phosphatases, Class 2Semaphorin-3AConceptsCortical dendritic growthBasal dendritesCultured dorsal root ganglion neuronsCortical layer V neuronsPrimary cultured dorsal root ganglion (DRG) neuronsDorsal root ganglion neuronsWild-type cortical neuronsBasal dendritic arborizationLayer V neuronsAxon guidanceDouble heterozygous mutantsSpecific guidance cuesProtein tyrosine phosphatase δAxon guidance cuesPoor arborizationV neuronsGuidance cuesGanglion neuronsDendritic arborizationCortical neuronsMutant miceSemaphorin 3ASrc kinaseActivation of FynGrowth cone collapse responseIdentification of Intrinsic Axon Growth Modulators for Intact CNS Neurons after Injury
Fink KL, López-Giráldez F, Kim IJ, Strittmatter SM, Cafferty WB. Identification of Intrinsic Axon Growth Modulators for Intact CNS Neurons after Injury. Cell Reports 2017, 18: 2687-2701. PMID: 28297672, PMCID: PMC5389739, DOI: 10.1016/j.celrep.2017.02.058.Peer-Reviewed Original ResearchConceptsSpinal cord injuryCentral nervous systemFunctional recoveryIntact neuronsAdult mammalian central nervous systemPartial spinal cord injuryInjury-induced sproutingUnilateral brainstem lesionsGreater functional recoverySpontaneous functional recoveryCorticospinal motor neuronsCorticospinal tract axonsMammalian central nervous systemWild-type miceNew synapse formationGrowth modulatorsAdjacent injuryBrainstem lesionsCord injuryFunctional deficitsIntact circuitryCNS neuronsMotor neuronsCircuit plasticityNervous systemOpposing effects of progranulin deficiency on amyloid and tau pathologies via microglial TYROBP network
Takahashi H, Klein ZA, Bhagat SM, Kaufman AC, Kostylev MA, Ikezu T, Strittmatter SM, For the Alzheimer’s Disease Neuroimaging Initiative. Opposing effects of progranulin deficiency on amyloid and tau pathologies via microglial TYROBP network. Acta Neuropathologica 2017, 133: 785-807. PMID: 28070672, PMCID: PMC5391267, DOI: 10.1007/s00401-017-1668-z.Peer-Reviewed Original ResearchConceptsAPP/PS1 micePS1 micePGRN deficiencyAlzheimer's diseaseAD risk variantsCerebrospinal fluid Aβ levelsLoss of progranulinMicroglial Aβ phagocytosisCSF tau levelsFrontotemporal lobar degenerationRisk variantsAPPswe/Aβ phagocytosisNeuronal injuryAβ levelsAβ pathologyCerebral amyloidosisAxonal dystrophyTau pathologyTau levelsComplement depositionPGRN levelsAD pathophysiologyAmyloid imagingProgranulin deficiency
2016
Inhibition of Poly-ADP-Ribosylation Fails to Increase Axonal Regeneration or Improve Functional Recovery after Adult Mammalian CNS Injury
Wang X, Sekine Y, Byrne AB, Cafferty WB, Hammarlund M, Strittmatter SM. Inhibition of Poly-ADP-Ribosylation Fails to Increase Axonal Regeneration or Improve Functional Recovery after Adult Mammalian CNS Injury. ENeuro 2016, 3: eneuro.0270-16.2016. PMID: 28032120, PMCID: PMC5187389, DOI: 10.1523/eneuro.0270-16.2016.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsBenzimidazolesCells, CulturedCerebral CortexDisease Models, AnimalFemaleIsoenzymesMaleMice, 129 StrainMice, Inbred C57BLMice, TransgenicMotor ActivityNerve RegenerationOptic Nerve InjuriesPoly (ADP-Ribose) Polymerase-1Poly(ADP-ribose) Polymerase InhibitorsRecovery of FunctionSpinal Cord InjuriesThoracic VertebraeConceptsOptic nerve crush injuryNerve crush injuryThoracic spinal cordAxonal regenerationSpinal cordDorsal hemisectionCrush injuryFunctional recoveryPARP inhibitorsMotor function recoveryRecovery of functionPoly (ADP-ribose) polymeraseClinical PARP inhibitorsNeurological recoveryShort hairpin RNACNS traumaCNS injuryFunction recoveryAxonal regrowthSystemic administrationPharmacodynamic actionAxon regenerationTraumatic damageTherapeutic efficacyNeurological traumaEarly Activation of Experience-Independent Dendritic Spine Turnover in a Mouse Model of Alzheimer's Disease.
Heiss JK, Barrett J, Yu Z, Haas LT, Kostylev MA, Strittmatter SM. Early Activation of Experience-Independent Dendritic Spine Turnover in a Mouse Model of Alzheimer's Disease. Cerebral Cortex 2016, 27: 3660-3674. PMID: 27365298, PMCID: PMC6059166, DOI: 10.1093/cercor/bhw188.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAlzheimer DiseaseAmyloid beta-Protein PrecursorAnalysis of VarianceAnimalsCerebral CortexDendritic SpinesDisease Models, AnimalGene Expression ProfilingGreen Fluorescent ProteinsHippocampusHumansImaging, Three-DimensionalImmunoprecipitationMiceMice, Inbred C57BLMice, TransgenicMutationNeuroimagingPlaque, AmyloidPresenilin-1Prion ProteinsProto-Oncogene Proteins c-fosSensory DeprivationTime FactorsVibrissaeConceptsAPP/PS1 miceDendritic spine turnoverSpine turnoverAlzheimer's diseasePS1 miceAged APP/PS1 miceYoung APP/PS1 miceAPP/PS1 mouse brainSoluble Aβ oligomersLipid-metabolizing genesAPPswe/Synaptic lossCerebral cortexSynapse densityAβ plaquesSynaptic dysregulationLack responsivenessMouse modelDendritic spinesPersistent spinesSynapse turnoverPlaque formationMouse brainYounger ageCellular prion proteinOligomers of Amyloid β Prevent Physiological Activation of the Cellular Prion Protein-Metabotropic Glutamate Receptor 5 Complex by Glutamate in Alzheimer Disease*
Haas LT, Strittmatter SM. Oligomers of Amyloid β Prevent Physiological Activation of the Cellular Prion Protein-Metabotropic Glutamate Receptor 5 Complex by Glutamate in Alzheimer Disease*. Journal Of Biological Chemistry 2016, 291: 17112-17121. PMID: 27325698, PMCID: PMC5016115, DOI: 10.1074/jbc.m116.720664.Peer-Reviewed Original ResearchConceptsProtein tyrosine kinase 2Calmodulin-dependent protein kinase IICalcium/calmodulin-dependent protein kinase IICellular prion proteinProtein kinase IIBrain slicesSignaling cascadesAlzheimer's diseaseKinase IIPhysiological signalingKinase 2Mutant transgeneMetabotropic glutamate receptor 5Loss of synapsesPrion proteinGlutamate receptor 5Receptor complexWild-type slicesProtein mediatorsAmyloid-β OligomersGlutamate activationChronic expressionDementia symptomsReceptor 5Acute exposure
2015
Comprehensive Corticospinal Labeling with mu-crystallin Transgene Reveals Axon Regeneration after Spinal Cord Trauma in ngr1−/− Mice
Fink KL, Strittmatter SM, Cafferty WB. Comprehensive Corticospinal Labeling with mu-crystallin Transgene Reveals Axon Regeneration after Spinal Cord Trauma in ngr1−/− Mice. Journal Of Neuroscience 2015, 35: 15403-15418. PMID: 26586827, PMCID: PMC4649010, DOI: 10.1523/jneurosci.3165-15.2015.Peer-Reviewed Original ResearchMeSH KeywordsAmidinesAnalysis of VarianceAnimalsAxonsBiotinCrystallinsDextransDisease Models, AnimalFunctional LateralityGene Expression RegulationGlial Fibrillary Acidic ProteinGPI-Linked ProteinsLuminescent ProteinsMiceMice, Inbred C57BLMice, TransgenicMu-CrystallinsMyelin ProteinsNerve RegenerationNogo Receptor 1Pyramidal TractsReceptors, Cell SurfaceRecovery of FunctionSpinal Cord InjuriesConceptsCorticospinal tractCST axonsTransgenic miceMotor tractsDextran amineFunctional deficitsSpinal cordAxon regenerationSpinal Cord Injury StudySpontaneous axon regenerationSpinal cord traumaNogo receptor 1Permanent functional deficitsPersistent functional deficitsBilateral pyramidotomyDorsal hemisectionMidthoracic cordCord traumaMotor pathwaysAdult CNSCST regenerationInjury studiesLesion siteRegenerating fibersNeural repairPrion-Protein-interacting Amyloid-β Oligomers of High Molecular Weight Are Tightly Correlated with Memory Impairment in Multiple Alzheimer Mouse Models*
Kostylev MA, Kaufman AC, Nygaard HB, Patel P, Haas LT, Gunther EC, Vortmeyer A, Strittmatter SM. Prion-Protein-interacting Amyloid-β Oligomers of High Molecular Weight Are Tightly Correlated with Memory Impairment in Multiple Alzheimer Mouse Models*. Journal Of Biological Chemistry 2015, 290: 17415-17438. PMID: 26018073, PMCID: PMC4498078, DOI: 10.1074/jbc.m115.643577.Peer-Reviewed Original ResearchAgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesAnimalsBehavior, AnimalDisease Models, AnimalFemaleHumansMaleMemory DisordersMiceMice, Inbred C57BLMice, Mutant StrainsMice, TransgenicMiddle AgedMolecular WeightPrefrontal CortexPresenilin-1PrionsProtein Structure, QuaternaryPrPC ProteinsRecombinant ProteinsFyn inhibition rescues established memory and synapse loss in Alzheimer mice
Kaufman AC, Salazar SV, Haas LT, Yang J, Kostylev MA, Jeng AT, Robinson SA, Gunther EC, van Dyck CH, Nygaard HB, Strittmatter SM. Fyn inhibition rescues established memory and synapse loss in Alzheimer mice. Annals Of Neurology 2015, 77: 953-971. PMID: 25707991, PMCID: PMC4447598, DOI: 10.1002/ana.24394.Peer-Reviewed Original ResearchConceptsAlzheimer's diseaseTransgenic miceGlu receptorsAPP/PS1 transgenic miceAPP/PS1 miceMemory deficitsEffective disease-modifying agentsAD mouse modelPS1 transgenic miceAD transgenic miceDisease-modifying agentsTau transgenic miceWeeks of treatmentPrecursor protein metabolismSpatial memory deficitsNovel object recognitionMorris water mazeBrain slice assaysAZD0530 treatmentMicroglial activationPS1 miceVehicle treatmentSynapse lossAlzheimer's miceAD pathologyPlasticity of Intact Rubral Projections Mediates Spontaneous Recovery of Function after Corticospinal Tract Injury
Siegel CS, Fink KL, Strittmatter SM, Cafferty WB. Plasticity of Intact Rubral Projections Mediates Spontaneous Recovery of Function after Corticospinal Tract Injury. Journal Of Neuroscience 2015, 35: 1443-1457. PMID: 25632122, PMCID: PMC4308593, DOI: 10.1523/jneurosci.3713-14.2015.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDesigner DrugsFunctional LateralityGene Expression RegulationGlial Fibrillary Acidic ProteinLocomotionMaleMiceMice, Inbred C57BLMice, TransgenicMuscle StrengthMyelin ProteinsNeuronal PlasticityNogo ProteinsPsychomotor DisordersPyramidal TractsRaphe NucleiRecovery of FunctionSpinal Cord InjuriesStereotyped BehaviorTime FactorsConceptsSpinal cord injurySpontaneous functional recoveryFunctional recoverySpontaneous recoveryIncomplete spinal cord injuryCorticospinal tract lesionsWeeks of lesionCorticospinal tract injuryNogo receptor 1Nucleus raphe magnusTract injuryRubrospinal projectionsTract lesionsCord injuryRaphe magnusCircuit rearrangementsAdult CNSCircuit plasticityLocomotor functionAdult micePharmacogenetic toolsRed nucleusRubral projectionReceptor 1Extensive sprouting