2014
Inhibitor of the Tyrosine Phosphatase STEP Reverses Cognitive Deficits in a Mouse Model of Alzheimer's Disease
Xu J, Chatterjee M, Baguley TD, Brouillette J, Kurup P, Ghosh D, Kanyo J, Zhang Y, Seyb K, Ononenyi C, Foscue E, Anderson GM, Gresack J, Cuny GD, Glicksman MA, Greengard P, Lam TT, Tautz L, Nairn AC, Ellman JA, Lombroso PJ. Inhibitor of the Tyrosine Phosphatase STEP Reverses Cognitive Deficits in a Mouse Model of Alzheimer's Disease. PLOS Biology 2014, 12: e1001923. PMID: 25093460, PMCID: PMC4122355, DOI: 10.1371/journal.pbio.1001923.Peer-Reviewed Original ResearchMeSH KeywordsAlzheimer DiseaseAmino Acid SequenceAnimalsBenzothiepinsCatalytic DomainCell DeathCerebral CortexCognition DisordersCysteineDisease Models, AnimalEnzyme InhibitorsHigh-Throughput Screening AssaysHumansMaleMice, Inbred C57BLMice, KnockoutMolecular Sequence DataNeuronsPhosphorylationPhosphotyrosineProtein Tyrosine Phosphatases, Non-ReceptorSubstrate SpecificityConceptsInhibitors of stepsSpecificity of inhibitorsIsoxazolepropionic acid receptor (AMPAR) traffickingCatalytic cysteinePTP inhibitorsTyrosine phosphataseTyrosine phosphorylationSecondary assaysSTEP KO miceReceptor traffickingFirst large-scale effortN-methyl-D-aspartate receptorsPyk2 activitySTEP inhibitorLarge-scale effortsNovel therapeutic targetSynaptic functionAlzheimer's diseaseNeurodegenerative disordersCortical cellsTherapeutic targetERK1/2Specificity experimentsPhosphataseInhibitors
2013
Substrate-Based Fragment Identification for the Development of Selective, Nonpeptidic Inhibitors of Striatal-Enriched Protein Tyrosine Phosphatase
Baguley TD, Xu HC, Chatterjee M, Nairn AC, Lombroso PJ, Ellman JA. Substrate-Based Fragment Identification for the Development of Selective, Nonpeptidic Inhibitors of Striatal-Enriched Protein Tyrosine Phosphatase. Journal Of Medicinal Chemistry 2013, 56: 7636-7650. PMID: 24083656, PMCID: PMC3875168, DOI: 10.1021/jm401037h.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBiphenyl CompoundsBlood-Brain BarrierBoronic AcidsCells, CulturedCerebral CortexHumansNeuronsPermeabilityPhosphorous AcidsProtein Tyrosine Phosphatases, Non-ReceptorRatsRats, Sprague-DawleySmall Molecule LibrariesStereoisomerismStructure-Activity RelationshipSubstrate SpecificityConceptsSubstrate Activity ScreeningProtein tyrosine phosphatase activityProtein tyrosine phosphataseTyrosine phosphatase activityGlutamate receptor internalizationOptimization of fragmentsTyrosine phosphataseDual specificityReceptor internalizationDevelopment of SelectiveSTEP inhibitorPhosphatase activityAlzheimer's diseaseIonotropic glutamate receptorsSubstrate-based approachNonpeptidic inhibitorsPotential targetAD mouse modelDrug discoveryRat cortical neuronsActivity screeningCortical neuronsGlutamate receptorsMouse modelNeuropsychiatric disordersCocaine-Induced Changes of Synaptic Transmission in the Striatum are Modulated by Adenosine A2A Receptors and Involve the Tyrosine Phosphatase STEP
Chiodi V, Mallozzi C, Ferrante A, Chen JF, Lombroso PJ, Di Stasi AM, Popoli P, Domenici MR. Cocaine-Induced Changes of Synaptic Transmission in the Striatum are Modulated by Adenosine A2A Receptors and Involve the Tyrosine Phosphatase STEP. Neuropsychopharmacology 2013, 39: 569-578. PMID: 23989619, PMCID: PMC3895235, DOI: 10.1038/npp.2013.229.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCerebral CortexCocaineCorpus StriatumDopamine Uptake InhibitorsEnzyme InhibitorsGene Expression RegulationHumansIn Vitro TechniquesInhibitory Postsynaptic PotentialsMaleMiceMice, Inbred C57BLMice, KnockoutNeural PathwaysNeuronsProtein Tyrosine Phosphatases, Non-ReceptorReceptor, Adenosine A2ASynaptic TransmissionSynaptosomesVanadatesConceptsEffects of cocaineSynaptic transmissionAdenosine A2A receptorsStriatal-enriched protein tyrosine phosphatasePharmacological actionsA2A receptorsWhole-cell voltage-clamp recordingsA2AR antagonist ZM241385Excitatory post-synaptic currentsCocaine-induced reductionMedium spiny neuronsCocaine-induced changesVoltage-clamp recordingsPost-synaptic currentsA2AR knockout miceCorticostriatal slicesStriatal slicesPsychomotor effectsSpiny neuronsSynaptic mechanismsAntagonist ZM241385Synaptic depressionClamp recordingsBrain areasStriatum
2010
Genetic reduction of striatal-enriched tyrosine phosphatase (STEP) reverses cognitive and cellular deficits in an Alzheimer’s disease mouse model
Zhang Y, Kurup P, Xu J, Carty N, Fernandez SM, Nygaard HB, Pittenger C, Greengard P, Strittmatter SM, Nairn AC, Lombroso PJ. Genetic reduction of striatal-enriched tyrosine phosphatase (STEP) reverses cognitive and cellular deficits in an Alzheimer’s disease mouse model. Proceedings Of The National Academy Of Sciences Of The United States Of America 2010, 107: 19014-19019. PMID: 20956308, PMCID: PMC2973892, DOI: 10.1073/pnas.1013543107.Peer-Reviewed Original ResearchConceptsStriatal-enriched tyrosine phosphataseTyrosine phosphataseDisease mouse modelStriatal-enriched phosphataseAlzheimer's diseaseCellular deficitsGenetic manipulationNMDA receptorsMouse modelTriple transgenic AD mouse modelIncurable neurodegenerative disorderTransgenic AD mouse modelAlzheimer's disease mouse modelPathophysiology of ADSTEP inhibitorGenetic reductionAD mouse modelHuman AD patientsSoluble Aβ oligomersSynaptic functionPhosphataseNeurodegenerative disordersAD patientsDevastating disorderAnimal modelsAβ-Mediated NMDA Receptor Endocytosis in Alzheimer's Disease Involves Ubiquitination of the Tyrosine Phosphatase STEP61
Kurup P, Zhang Y, Xu J, Venkitaramani DV, Haroutunian V, Greengard P, Nairn AC, Lombroso PJ. Aβ-Mediated NMDA Receptor Endocytosis in Alzheimer's Disease Involves Ubiquitination of the Tyrosine Phosphatase STEP61. Journal Of Neuroscience 2010, 30: 5948-5957. PMID: 20427654, PMCID: PMC2868326, DOI: 10.1523/jneurosci.0157-10.2010.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesAnimalsCell LineCells, CulturedCerebral CortexEndocytosisHumansIn Vitro TechniquesMiceMice, KnockoutMice, TransgenicMiddle AgedNeuronsProtein Tyrosine Phosphatases, Non-ReceptorRatsRats, Sprague-DawleyReceptors, N-Methyl-D-AspartateUbiquitinated ProteinsUbiquitinationConceptsAlzheimer's diseaseAbeta treatmentNR2B subunitProtein tyrosine Phosphatase 61Cognitive deficitsNMDA receptor internalizationHuman AD brainsMouse cortical culturesNR1/NR2B receptorsNMDA receptor endocytosisIonotropic glutamate receptorsTyrosine phosphatase STEP61AD brainCortical slicesCortical culturesGlutamate receptorsNR2B receptorsPostsynaptic terminalsPrefrontal cortexNeuronal membranesElevated levelsCortexReceptor internalizationUbiquitin-proteasome systemStep activity
2005
Regulation of NMDA receptor trafficking by amyloid-β
Snyder EM, Nong Y, Almeida CG, Paul S, Moran T, Choi EY, Nairn AC, Salter MW, Lombroso PJ, Gouras GK, Greengard P. Regulation of NMDA receptor trafficking by amyloid-β. Nature Neuroscience 2005, 8: 1051-1058. PMID: 16025111, DOI: 10.1038/nn1503.Peer-Reviewed Original ResearchMeSH KeywordsAlpha7 Nicotinic Acetylcholine ReceptorAlzheimer DiseaseAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAnimalsCalcineurinCell MembraneCerebral CortexCREB-Binding ProteinDisease Models, AnimalElectric ConductivityEndocytosisEnzyme ActivationMiceNeuronsN-MethylaspartateNuclear ProteinsPeptide FragmentsProtein TransportProtein Tyrosine PhosphatasesProtein Tyrosine Phosphatases, Non-ReceptorReceptors, NicotinicReceptors, N-Methyl-D-AspartateSignal TransductionSynapsesTrans-ActivatorsConceptsNMDA receptorsCortical neuronsAlzheimer's diseaseBrains of patientsAlzheimer's disease pathologyNMDA receptor traffickingGenetic mouse modelsΓ-secretase inhibitorApplication of amyloidSurface NMDA receptorsGlutamatergic transmissionSynaptic dysfunctionPersistent depressionTyrosine phosphatase STEPNicotinic receptorsMouse modelDisease processSynaptic plasticityDisease pathologyNeuronsReceptorsAmyloidSurface expressionUnderlying mechanismReceptor trafficking
1998
Development of the Cerebral Cortex: VIII. Apoptosis: Neuronal Hari-Kari
Lombroso P, NAEGELE J, LOMBROSO P. Development of the Cerebral Cortex: VIII. Apoptosis: Neuronal Hari-Kari. Journal Of The American Academy Of Child & Adolescent Psychiatry 1998, 37: 890-892. PMID: 9695453, DOI: 10.1097/00004583-199808000-00021.Peer-Reviewed Original ResearchDevelopment of the Cerebral Cortex: III. The Reeler Mutation
LOMBROSO P. Development of the Cerebral Cortex: III. The Reeler Mutation. Journal Of The American Academy Of Child & Adolescent Psychiatry 1998, 37: 333-334. PMID: 9519640, DOI: 10.1097/00004583-199803000-00020.Peer-Reviewed Original Research
1995
Cellular and molecular characterization of a brain-enriched protein tyrosine phosphatase
Boulanger L, Lombroso P, Raghunathan A, During M, Wahle P, Naegele. Cellular and molecular characterization of a brain-enriched protein tyrosine phosphatase. Journal Of Neuroscience 1995, 15: 1532-1544. PMID: 7869116, PMCID: PMC6577844, DOI: 10.1523/jneurosci.15-02-01532.1995.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibodies, MonoclonalAxonsBlotting, WesternBrainCerebral CortexCorpus StriatumImmunohistochemistryIn Situ HybridizationMiceMice, Inbred BALB CNeuronsPeptide FragmentsProtein Tyrosine PhosphatasesProtein Tyrosine Phosphatases, Non-ReceptorRatsRNA, MessengerSynaptic TransmissionTissue DistributionConceptsSubstantia nigraAdult rat brainCombination of immunocytochemistrySitu hybridization studiesProjection neuronsBasal gangliaCaudate putamenPresynaptic axonsStriatal enriched protein tyrosine phosphataseRat brainBrain regionsImmunocytochemical stainingLesion experimentsWestern blotLesion studiesWestern blottingMonoclonal antibodiesMRNA expression patternsImmunoreactive formsImmunoreactive bandsProtein tyrosine phosphataseNigraSitu hybridizationHybridization studiesSTEP isoforms