2020
Inhibition of striatal-enriched protein tyrosine phosphatase (STEP) activity reverses behavioral deficits in a rodent model of autism
Chatterjee M, Singh P, Xu J, Lombroso PJ, Kurup PK. Inhibition of striatal-enriched protein tyrosine phosphatase (STEP) activity reverses behavioral deficits in a rodent model of autism. Behavioural Brain Research 2020, 391: 112713. PMID: 32461127, PMCID: PMC7346720, DOI: 10.1016/j.bbr.2020.112713.Peer-Reviewed Original ResearchAnimalsAutism Spectrum DisorderAutistic DisorderBehavior, AnimalDisease Models, AnimalExploratory BehaviorFemaleInhibition, PsychologicalMaleMiceMice, Inbred C57BLNeuronal PlasticityPrefrontal CortexPregnancyPrenatal Exposure Delayed EffectsProtein Tyrosine PhosphatasesProtein Tyrosine Phosphatases, Non-ReceptorSocial BehaviorStereotyped BehaviorValproic Acid
2016
STEP activation by Gαq coupled GPCRs opposes Src regulation of NMDA receptors containing the GluN2A subunit
Tian M, Xu J, Lei G, Lombroso PJ, Jackson MF, MacDonald JF. STEP activation by Gαq coupled GPCRs opposes Src regulation of NMDA receptors containing the GluN2A subunit. Scientific Reports 2016, 6: 36684. PMID: 27857196, PMCID: PMC5114553, DOI: 10.1038/srep36684.Peer-Reviewed Original ResearchConceptsStriatal-enriched protein tyrosine phosphataseFamily of kinasesProtein tyrosine phosphataseM1R stimulationN-methyl-D-aspartate receptorsM1 muscarinic acetylcholine receptorSrc recruitmentTyrosine phosphataseSrc regulationNMDAR functionIntracellular Ca2Step activationMuscarinic acetylcholine receptorsGluN2A subunitGαqAcetylcholine receptorsHigh intracellular Ca2Function of NMDARsSynaptic plasticityPhosphataseNMDAR activationActivationReceptorsRecruitmentCa2
2015
Regulation of STEP61 and tyrosine-phosphorylation of NMDA and AMPA receptors during homeostatic synaptic plasticity
Jang SS, Royston SE, Xu J, Cavaretta JP, Vest MO, Lee KY, Lee S, Jeong HG, Lombroso PJ, Chung HJ. Regulation of STEP61 and tyrosine-phosphorylation of NMDA and AMPA receptors during homeostatic synaptic plasticity. Molecular Brain 2015, 8: 55. PMID: 26391783, PMCID: PMC4578242, DOI: 10.1186/s13041-015-0148-4.Peer-Reviewed Original ResearchConceptsN-methyl-D-aspartate receptorsHomeostatic synaptic plasticitySynaptic plasticityTyrosine phosphorylationActivity blockadeDephosphorylation of GluN2BSynaptic scalingProtein tyrosine phosphataseLevel of GluN2BProlonged activity blockadeExcitatory synaptic transmissionHippocampal cultured neuronsIsoxazolepropionic acid (AMPA) receptorsNMDAR subunit GluN2BActivity-dependent regulationTyrosine phosphataseSTEP61 levelsHomeostatic stabilizationSynaptic transmissionExcitatory synapsesAMPA receptorsGluA2 expressionPostsynaptic accumulationCultured neuronsAcid receptors