2020
Neural Stem Cells Direct Axon Guidance via Their Radial Fiber Scaffold
Kaur N, Han W, Li Z, Madrigal MP, Shim S, Pochareddy S, Gulden FO, Li M, Xu X, Xing X, Takeo Y, Li Z, Lu K, Imamura Kawasawa Y, Ballester-Lurbe B, Moreno-Bravo JA, Chédotal A, Terrado J, Pérez-Roger I, Koleske AJ, Sestan N. Neural Stem Cells Direct Axon Guidance via Their Radial Fiber Scaffold. Neuron 2020, 107: 1197-1211.e9. PMID: 32707082, PMCID: PMC7529949, DOI: 10.1016/j.neuron.2020.06.035.Peer-Reviewed Original ResearchConceptsNeural stem cellsDendritic spine formationNeural circuit formationRadial glia-like neural stem cellsMedial ganglionic eminenceRadial fibersAxon guidanceStem cellsCorticospinal neuronsGlobus pallidusMacroglial cellsGanglionic eminenceCircuit formationVentricular zoneSpine formationRnd3/RhoENeuronsMidline crossingExpression of Rnd3Rho GTPaseCellsExpressionUnexpected roleAtypical Rho GTPaseRnd3
2017
CNS Neurons Deposit Laminin α5 to Stabilize Synapses
Omar MH, Campbell M, Xiao X, Zhong Q, Brunken WJ, Miner JH, Greer CA, Koleske AJ. CNS Neurons Deposit Laminin α5 to Stabilize Synapses. Cell Reports 2017, 21: 1281-1292. PMID: 29091766, PMCID: PMC5776391, DOI: 10.1016/j.celrep.2017.10.028.Peer-Reviewed Original ResearchConceptsDendritic spine head sizeLaminin α5Larger postsynaptic densitiesDendritic spine densitySpine head sizeAge-dependent lossDendritic spine sizeEnhanced neurotransmissionSpine densityHippocampal neuronsDendritic spinesConditional deletionLaminin β2Postsynaptic densitySynapsesSpine sizeEarly adulthoodBehavioral defectsNeuronsBrainHead sizeMolecular mechanismsΑ5LamininNeurotransmission
2013
Corticosteroid-Induced Neural Remodeling Predicts Behavioral Vulnerability and Resilience
Gourley SL, Swanson AM, Koleske AJ. Corticosteroid-Induced Neural Remodeling Predicts Behavioral Vulnerability and Resilience. Journal Of Neuroscience 2013, 33: 3107-3112. PMID: 23407965, PMCID: PMC3711631, DOI: 10.1523/jneurosci.2138-12.2013.Peer-Reviewed Original ResearchConceptsStressor exposureDendritic spinesDendritic spine densityRecovery periodCA1 pyramidal neuronsHippocampal CA1 neuronsCertain neuron populationsStress hormone exposureStress-related modificationsDistinct brain regionsBehavioral vulnerabilityDendritic retractionPyramidal neuronsCA1 neuronsNeural remodelingSpine densityStress-related diseasesHippocampal CA1Orbital cortexBasal amygdalaDendritic arborsHormone exposureNeuron populationsBrain regionsBrain circuits
2012
Integrin β1 Signals through Arg to Regulate Postnatal Dendritic Arborization, Synapse Density, and Behavior
Warren MS, Bradley WD, Gourley SL, Lin YC, Simpson MA, Reichardt LF, Greer CA, Taylor JR, Koleske AJ. Integrin β1 Signals through Arg to Regulate Postnatal Dendritic Arborization, Synapse Density, and Behavior. Journal Of Neuroscience 2012, 32: 2824-2834. PMID: 22357865, PMCID: PMC3313657, DOI: 10.1523/jneurosci.3942-11.2012.Peer-Reviewed Original ResearchMeSH KeywordsAlpha-FetoproteinsAnalysis of VarianceAnimalsAnimals, NewbornAvoidance LearningBasic Helix-Loop-Helix Transcription FactorsCells, CulturedCocaineDendritesEnzyme-Linked Immunosorbent AssayExploratory BehaviorGreen Fluorescent ProteinsGTPase-Activating ProteinsHippocampusImmunoprecipitationIntegrin beta1MaleMiceMice, KnockoutMutationNerve Tissue ProteinsNeuronsOrgan Culture TechniquesPost-Synaptic DensityProtein BindingRecognition, PsychologyRepressor ProteinsSignal TransductionSrc Homology DomainsSynapsesConceptsIntegrin β1Vertebrate nervous systemExtracellular matrix receptorsGenetic experimentsIntracellular tailGenetic manipulationRhoA GTPaseArg kinaseMatrix receptorsProper hippocampal functionProper developmentSynapse maintenanceDose-sensitive mannerImpaired hippocampus-dependent learningHippocampal dendritic arborsHippocampal synapse lossDendritic arbor sizeHippocampus-dependent learningΒ1ArgSelective lossGTPaseP190RhoGAPPsychomotor sensitivityKinase
2007
Inhibition of Rho via Arg and p190RhoGAP in the Postnatal Mouse Hippocampus Regulates Dendritic Spine Maturation, Synapse and Dendrite Stability, and Behavior
Sfakianos MK, Eisman A, Gourley SL, Bradley WD, Scheetz AJ, Settleman J, Taylor JR, Greer CA, Williamson A, Koleske AJ. Inhibition of Rho via Arg and p190RhoGAP in the Postnatal Mouse Hippocampus Regulates Dendritic Spine Maturation, Synapse and Dendrite Stability, and Behavior. Journal Of Neuroscience 2007, 27: 10982-10992. PMID: 17928439, PMCID: PMC6672862, DOI: 10.1523/jneurosci.0793-07.2007.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornArginineDendritesDendritic SpinesGTPase-Activating ProteinsHippocampusMaleMiceMice, KnockoutMotor ActivityNeural InhibitionSynapsesConceptsDendritic spine maturationDendritic regressionSpine maturationDendritic spinesNormal morphological maturationDendritic spine lossPostnatal day 21Late postnatal developmentPostnatal mouse hippocampusDendrite stabilityPyramidal dendritesSpine lossSynaptic refinementProgressive deficitsHippocampal synapsesMature neuronsArbor developmentInhibitory pathwaysMouse hippocampusDendrite arborsDay 21Postnatal developmentMorphological maturationDendritic branchesDendrite morphogenesisThe Abl-related Gene Tyrosine Kinase Acts through p190RhoGAP to Inhibit Actomyosin Contractility and Regulate Focal Adhesion Dynamics upon Adhesion to Fibronectin
Peacock JG, Miller AL, Bradley WD, Rodriguez OC, Webb DJ, Koleske AJ. The Abl-related Gene Tyrosine Kinase Acts through p190RhoGAP to Inhibit Actomyosin Contractility and Regulate Focal Adhesion Dynamics upon Adhesion to Fibronectin. Molecular Biology Of The Cell 2007, 18: 3860-3872. PMID: 17652459, PMCID: PMC1995720, DOI: 10.1091/mbc.e07-01-0075.Peer-Reviewed Original ResearchConceptsFocal adhesion dynamicsFocal adhesionsActomyosin contractilityAdhesion dynamicsActin-dependent protrusionsGene Tyrosine KinaseCell migrationCell body translocationAbl family kinasesWild-type cellsC-terminal halfDistinct functional domainsN-terminal halfF-actin stress fibersStress fiber formationInhibits cell migrationKinase inhibitsFamily kinasesCell peripheryStress fibersActin polymerizationFunctional domainsKinase activityTyrosine kinaseWT cells
2004
Adhesion-Dependent Regulation of p190RhoGAP in the Developing Brain by the Abl-Related Gene Tyrosine Kinase
Hernández SE, Settleman J, Koleske AJ. Adhesion-Dependent Regulation of p190RhoGAP in the Developing Brain by the Abl-Related Gene Tyrosine Kinase. Current Biology 2004, 14: 691-696. PMID: 15084284, DOI: 10.1016/j.cub.2004.03.062.Peer-Reviewed Original ResearchMeSH Keywords3T3 CellsAnimalsBrainCytoskeletonDNA-Binding ProteinsGTPase-Activating ProteinsGuanine Nucleotide Exchange FactorsImmunoblottingMiceMorphogenesisNeuritesNeuronsNuclear ProteinsPhosphorylationPlasmidsPrecipitin TestsProtein-Tyrosine KinasesRepressor ProteinsTransfectionTumor Cells, CulturedConceptsAdhesion-dependent regulationArg substrateNeuronal morphogenesisKinase activityGene Tyrosine KinaseActin-dependent processesWild-type extractsWild-type cellsArg kinase activityAbl kinase activityMembrane rufflingPostnatal mouse brainFamily kinasesCytoskeletal rearrangementsPhosphotyrosine contentFilopodial protrusionsCell motilityArg kinaseP190RhoGAPMouse brainTyrosine kinaseKinasePhosphorylationMorphogenesisPostnatal brain
2003
Phospholipids Can Switch the GTPase Substrate Preference of a GTPase-activating Protein*
Ligeti E, Dagher MC, Hernandez SE, Koleske AJ, Settleman J. Phospholipids Can Switch the GTPase Substrate Preference of a GTPase-activating Protein*. Journal Of Biological Chemistry 2003, 279: 5055-5058. PMID: 14699145, DOI: 10.1074/jbc.c300547200.Peer-Reviewed Original ResearchConceptsGTPase-activating proteinsSmall GTPasesSubstrate preferencePotent GTPase-activating proteinMajor cellular inhibitorActivity of GTPasesNovel regulatory mechanismLikely physiological roleRacGAP activityIntrinsic GTPRhoGAP activityP190 RhoGAPCellular inhibitorRac GTPasesGTPasesRegulatory mechanismsPhysiological roleProteinPhospholipidsFatty acidsRhoGAPGTPP190ActivityRho