2024
Lysosomal TMEM106B interacts with galactosylceramidase to regulate myelin lipid metabolism
Takahashi H, Perez-Canamas A, Lee C, Ye H, Han X, Strittmatter S. Lysosomal TMEM106B interacts with galactosylceramidase to regulate myelin lipid metabolism. Communications Biology 2024, 7: 1088. PMID: 39237682, PMCID: PMC11377756, DOI: 10.1038/s42003-024-06810-5.Peer-Reviewed Original ResearchConceptsMyelin lipid metabolismCo-immunoprecipitation assaysSulfated derivative sulfatideLipid metabolismAssociated with multiple neurological disordersCo-immunoprecipitationTMEM106BTransmembrane proteinsAmyloid fibrilsTMEM106B deficiencyHypomyelinating leukodystrophyAlzheimer's diseasePhysiological functionsFrontotemporal dementiaMolecular levelNeurodegenerative brainGalactosylceramidaseLipidomic analysisMultiple neurological disordersMetabolismMyelin lipidsDecreased levelsEndolysosomesAmyloidGalactosylceramidase activity
2023
Amino-terminal proteolytic fragment of the axon growth inhibitor Nogo-A (Rtn4A) is upregulated by injury and promotes axon regeneration
Sekine Y, Wang X, Kikkawa K, Honda S, Strittmatter S. Amino-terminal proteolytic fragment of the axon growth inhibitor Nogo-A (Rtn4A) is upregulated by injury and promotes axon regeneration. Journal Of Biological Chemistry 2023, 299: 105232. PMID: 37690690, PMCID: PMC10622843, DOI: 10.1016/j.jbc.2023.105232.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsFemaleGrowth InhibitorsMammalsMiceMice, Inbred C57BLMyelin ProteinsNerve RegenerationNogo ProteinsProteolysisConceptsAxon regenerationCentral nervous system injuryPersistent neurological deficitsCerebral cortical neuronsNervous system injuryNeurological deficitsSystem injuryCNS injuryCortical neuronsAmino-terminal fragmentInjuryExtracellular actionPhysiological productionNogoInhibitory proteinMiceNeuronsInhibitory domainOverexpression increasesVaried resultsProteolytic fragmentsAxotomyExpressionNogoAGene targeting
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
NogoA-expressing astrocytes limit peripheral macrophage infiltration after ischemic brain injury in primates
Boghdadi AG, Spurrier J, Teo L, Li M, Skarica M, Cao B, Kwan WC, Merson TD, Nilsson SK, Sestan N, Strittmatter SM, Bourne JA. NogoA-expressing astrocytes limit peripheral macrophage infiltration after ischemic brain injury in primates. Nature Communications 2021, 12: 6906. PMID: 34824275, PMCID: PMC8617297, DOI: 10.1038/s41467-021-27245-0.Peer-Reviewed Original ResearchConceptsBrain injuryPeripheral macrophage infiltrationIschemic brain injuryAnti-inflammatory responseMajority of astrocytesNeurite outgrowth inhibitory proteinIschemic strokePeripheral macrophagesReactive astrocytesMacrophage infiltrationStroke recoveryAstrocyte clustersMarmoset monkeysVisual cortexAstrocytesNogoASingle-nucleus transcriptomicsInhibitory proteinInjuryStrokeHuman brainInfiltrationCritical rolePrecise functionOligodendrocytesOptic 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
2019
A proteolytic C-terminal fragment of Nogo-A (reticulon-4A) is released in exosomes and potently inhibits axon regeneration
Sekine Y, Lindborg JA, Strittmatter SM. A proteolytic C-terminal fragment of Nogo-A (reticulon-4A) is released in exosomes and potently inhibits axon regeneration. Journal Of Biological Chemistry 2019, 295: 2175-2183. PMID: 31748413, PMCID: PMC7039549, DOI: 10.1074/jbc.ra119.009896.Peer-Reviewed Original ResearchConceptsMembrane-associated proteinsRecombinant protein expressionMatrix-associated proteinOligodendrocyte plasma membraneProteolytic C-terminal fragmentsRegeneration assaysC-terminal fragmentPlasma membraneNeurite outgrowth inhibitor NogoAxonal regenerationExosomal releaseDiffusible inhibitorC-terminalSiRNA knockdownCleavage siteCultured cellsLong fragmentPrimary cortical neuron culturesCentral nervous system traumaExosomesEnzyme inhibitor treatmentExosomal fractionSpinal cord crush injuryCerebral cortex neuronsProteinLimiting Neuronal Nogo Receptor 1 Signaling during Experimental Autoimmune Encephalomyelitis Preserves Axonal Transport and Abrogates Inflammatory Demyelination
Lee JY, Kim MJ, Thomas S, Oorschot V, Ramm G, Aui PM, Sekine Y, Deliyanti D, Wilkinson-Berka J, Niego B, Harvey AR, Theotokis P, McLean C, Strittmatter SM, Petratos S. Limiting Neuronal Nogo Receptor 1 Signaling during Experimental Autoimmune Encephalomyelitis Preserves Axonal Transport and Abrogates Inflammatory Demyelination. Journal Of Neuroscience 2019, 39: 5562-5580. PMID: 31061088, PMCID: PMC6616297, DOI: 10.1523/jneurosci.1760-18.2019.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAnimalsAxonal TransportAxonsCells, CulturedEncephalomyelitis, Autoimmune, ExperimentalFemaleHumansIntercellular Signaling Peptides and ProteinsKinesinsMaleMiceMice, Inbred C57BLMiddle AgedMyelin SheathNerve Tissue ProteinsNogo Receptor 1Retinal Ganglion CellsSignal TransductionConceptsExperimental autoimmune encephalomyelitisCollapsin response mediator protein 2Optic nerveAxonal degenerationMultiple sclerosisAxonal vesicular transportAutoimmune encephalomyelitisInflammatory demyelinationAxonal integritySeverity of EAECre deletionAxonal transportRetinal ganglion cell axonsAxonal motor proteinsEAE-induced miceImmune-mediated destructionProgressive multiple sclerosisNeuron-specific deletionNogo receptor 1Ganglion cell axonsAnterograde transportFlx/Response mediator protein 2Adeno-associated virus serotype 2Phosphorylation of CRMP2Anti‐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 efficacyPyk2 Signaling through Graf1 and RhoA GTPase Is Required for Amyloid-β Oligomer-Triggered Synapse Loss
Lee S, Salazar SV, Cox TO, Strittmatter SM. Pyk2 Signaling through Graf1 and RhoA GTPase Is Required for Amyloid-β Oligomer-Triggered Synapse Loss. Journal Of Neuroscience 2019, 39: 1910-1929. PMID: 30626696, PMCID: PMC6407289, DOI: 10.1523/jneurosci.2983-18.2018.Peer-Reviewed Original ResearchConceptsDendritic spine lossGenetic variationRhoA GTPaseSynapse lossSpine lossBiochemical basisGTPase-activating proteinsFocal adhesion kinasePyk2 functionPyk2 tyrosine kinasePostsynaptic sitesTyrosine kinase Pyk2Disease riskKinase-dependent mechanismOverexpression of Pyk2Dendritic spine densityAdhesion kinaseTransgenic mouse modelBiochemical isolationPyk2 kinaseAlzheimer's disease riskDendritic spine stabilityKinase Pyk2Late-onset Alzheimer's disease (LOAD) riskActin control
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 LTDDiltiazem Promotes Regenerative Axon Growth
Huebner EA, Budel S, Jiang Z, Omura T, Ho TS, Barrett L, Merkel JS, Pereira LM, Andrews NA, Wang X, Singh B, Kapur K, Costigan M, Strittmatter SM, Woolf CJ. Diltiazem Promotes Regenerative Axon Growth. Molecular Neurobiology 2018, 56: 3948-3957. PMID: 30232777, PMCID: PMC6424671, DOI: 10.1007/s12035-018-1349-5.Peer-Reviewed Original ResearchConceptsL-type calcium channel blockerDorsal root gangliaCentral nervous systemChondroitin sulfate proteoglycanAxon regenerationMouse dorsal root gangliaAdult central nervous systemHuman sensory neuronsCalcium channel blockersSpinal cord injuryRat cortical culturesCord injuryAxonal regrowthRoot gangliaCortical culturesChannel blockersRegenerative propensityRegenerative axon growthSensory neuronsNervous systemPharmacological enhancersAxon growthPermanent lossSulfate proteoglycanAxotomySleep 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 ResearchThe nociceptin receptor inhibits axonal regeneration and recovery from spinal cord injury
Sekine Y, Siegel CS, Sekine-Konno T, Cafferty WBJ, Strittmatter SM. The nociceptin receptor inhibits axonal regeneration and recovery from spinal cord injury. Science Signaling 2018, 11 PMID: 29615517, PMCID: PMC6179440, DOI: 10.1126/scisignal.aao4180.Peer-Reviewed Original ResearchConceptsSpinal cord injuryCord injuryAxonal regenerationMid-thoracic spinal cordTraumatic spinal cord injuryPartial neurological recoveryTraumatic CNS injuryDorsal hemisectionNeurological recoveryPeptide nociceptinCNS injuryAxon sproutingORL1 agonistSelective blockadeSpinal cordLocomotor functionNociceptin receptorAxon regenerationNeural repairPrimary neuronsNgR1 proteinAxonal growthNull miceMRNA expressionORL1Functional Genome-wide Screen Identifies Pathways Restricting Central Nervous System Axonal Regeneration
Sekine Y, Lin-Moore A, Chenette DM, Wang X, Jiang Z, Cafferty WB, Hammarlund M, Strittmatter SM. Functional Genome-wide Screen Identifies Pathways Restricting Central Nervous System Axonal Regeneration. Cell Reports 2018, 23: 415-428. PMID: 29642001, PMCID: PMC5937716, DOI: 10.1016/j.celrep.2018.03.058.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAxonsCaenorhabditis elegansCaenorhabditis elegans ProteinsCentral Nervous SystemFemaleGene Regulatory NetworksGenomeMiceMice, Inbred C57BLMice, KnockoutNerve RegenerationOptic NerveRab GTP-Binding ProteinsRecovery of FunctionRetinal Ganglion CellsRNA InterferenceRNA, Small InterferingSpinal Cord InjuriesSuppressor of Cytokine Signaling ProteinsConceptsAxonal regenerationCentral nervous system axonal regenerationRetinal ganglion cell axon regenerationGreater motor functionOptic nerve crushCerebral cortical neuronsSpinal cord traumaNeurological recoveryCord traumaNerve crushCNS injuryAxonal regrowthCortical neuronsMotor functionAxon regenerationReceptor bindingComprehensive functional screenAdult mammalsInjuryMultiple pathwaysExpression profilesIdentifies pathwaysSignificant overlapPathwayFunction screen
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 overexpressionCrushInhibitorsConditional Deletion of Prnp Rescues Behavioral and Synaptic Deficits after Disease Onset in Transgenic Alzheimer's Disease
Salazar SV, Gallardo C, Kaufman AC, Herber CS, Haas LT, Robinson S, Manson JC, Lee MK, Strittmatter SM. Conditional Deletion of Prnp Rescues Behavioral and Synaptic Deficits after Disease Onset in Transgenic Alzheimer's Disease. Journal Of Neuroscience 2017, 37: 9207-9221. PMID: 28842420, PMCID: PMC5607466, DOI: 10.1523/jneurosci.0722-17.2017.Peer-Reviewed Original ResearchConceptsDisease onsetAlzheimer's diseaseFamilial Alzheimer's diseaseDisease pathophysiologyCellular prion proteinHippocampal synapse lossSoluble oligomeric amyloidTransgenic Alzheimer's diseaseTime of diagnosisDisease-modifying therapiesAlzheimer's disease pathophysiologyPotential therapeutic targetAD-related phenotypesMonths of ageRole of PrPSymptom onsetSynaptic deficitsPrion proteinSynapse lossCatecholaminergic neuronsPlaque densityBehavioral deficitsOligomeric amyloidMouse modelPresent symptomsProtein 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 system
2016
Axonal branching in lateral olfactory tract is promoted by Nogo signaling
Iketani M, Yokoyama T, Kurihara Y, Strittmatter SM, Goshima Y, Kawahara N, Takei K. Axonal branching in lateral olfactory tract is promoted by Nogo signaling. Scientific Reports 2016, 6: 39586. PMID: 28000762, PMCID: PMC5175167, DOI: 10.1038/srep39586.Peer-Reviewed Original ResearchConceptsLateral olfactory tractCultured OB neuronsOB neuronsCollateral branchesAxonal branchingOlfactory bulbOlfactory tractAxonal bundlesMajor projection neuronsReceptor 1 antagonistKnockdown of NogoCollateral formationProjection neuronsPrimary axonsNogo signalingMitral cellsMiceNeuronsExpression levelsAbnormal increaseTractNogoAntagonistAxons