2024
Disease-causing Slack potassium channel mutations produce opposite effects on excitability of excitatory and inhibitory neurons
Wu J, Quraishi I, Zhang Y, Bromwich M, Kaczmarek L. Disease-causing Slack potassium channel mutations produce opposite effects on excitability of excitatory and inhibitory neurons. Cell Reports 2024, 43: 113904. PMID: 38457342, PMCID: PMC11013952, DOI: 10.1016/j.celrep.2024.113904.Peer-Reviewed Original ResearchInhibitory neuronsRegulation of neuronal excitabilityPotassium channel mutationsVoltage-dependent sodiumInhibitory cortical neuronsGain-of-function mutationsAxon initial segmentKCNT1 geneNeuronal excitabilityChannel subunitsChannel mutationsNetwork hyperexcitabilityMouse modelNeuron typesCortical neuronsTreat epilepsyNeuronsExcitable neuronsNeurological disordersSevere intellectual disabilityMutationsInitial segmentKCNT1ExpressionHyperexcitability
2001
Calmodulin Regulates Assembly and Trafficking of SK4/IK1 Ca2+-activated K+ Channels*
Joiner W, Khanna R, Schlichter L, Kaczmarek L. Calmodulin Regulates Assembly and Trafficking of SK4/IK1 Ca2+-activated K+ Channels*. Journal Of Biological Chemistry 2001, 276: 37980-37985. PMID: 11495911, DOI: 10.1074/jbc.m104965200.Peer-Reviewed Original ResearchConceptsChannel assemblyC-terminusAssembly of channelsIon channelsC-terminal domainDistal C-terminal domainCo-immunoprecipitation experimentsCaM-binding domainSurface expressionDominant negative effectProximal C-terminusWhole-cell currentsCellular functionsCaM genesPlasma membraneCaM proteinFree CaMNovel mechanismTraffickingProteinTerminusAssemblyExpressionSK4Domain
1998
Expression of a foreign G-protein coupled receptor modulates the excitability of the peptidergic bag cell neurons of Aplysia
Whim M, Kaczmarek L. Expression of a foreign G-protein coupled receptor modulates the excitability of the peptidergic bag cell neurons of Aplysia. Neuroscience Letters 1998, 258: 143-146. PMID: 9885951, DOI: 10.1016/s0304-3940(98)00850-7.Peer-Reviewed Original ResearchConceptsBag cell neuronsCell neuronsMetabotropic glutamate receptorsG proteinsPeptidergic bag cell neuronsAfferent stimulationSpontaneous firingAfferent inputGlutamate receptorsSecond messenger pathwaysPharmacological activationReceptor activationAfterdischargesNeuronsMessenger pathwaysReceptorsActivationAdditional pathwaysExpressionExcitabilityPathwaySustained periodWhen, where, and how much? Expression of the Kv3.1 potassium channel in high‐frequency firing neurons
Gan L, Kaczmarek L. When, where, and how much? Expression of the Kv3.1 potassium channel in high‐frequency firing neurons. Developmental Neurobiology 1998, 37: 69-79. PMID: 9777733, DOI: 10.1002/(sici)1097-4695(199810)37:1<69::aid-neu6>3.0.co;2-6.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsAuditory brain stem neuronsVoltage-dependent potassium currentsBrain stem neuronsHigh-frequency firing neuronsKv3.1 potassium channelStem neuronsKv3.1 potassium channel geneLong-term regulationSynaptic inputsPotassium currentPotassium channel genesNeuronsPotassium channelsKv3.1 geneKv3.1 subunitsFiring neuronsHigh frequencyChannel genesCurrent knowledgeChannels altersTranscriptional mechanismsCell-type specificityExpressionGene transcriptionExtrinsic factors
1993
Expression and regulation of mammalian K+ channel genes
Perney T, Kaczmarek L. Expression and regulation of mammalian K+ channel genes. Seminars In Neuroscience 1993, 5: 135-145. DOI: 10.1016/s1044-5765(05)80008-9.Peer-Reviewed Original ResearchChannel gene expressionGene expressionChannel genesRegulation of mammalianParticular spatial domainSpecific cell typesDifferent environmental stimuliCellular functionsChannel proteinsCell typesEnvironmental stimuliCell occurDiverse aspectsSuch regulationGenesRegulationChannel expressionGrowth factorExpressionExcitable tissuesLongterm changesCellsSuperfamilyMammalianProtein
1992
Expression of the H-ras oncogene induces potassium conductance and neuron-specific potassium channel mRNAs in the AtT20 cell line
Hemmick L, Perney T, Flamm R, Kaczmarek L, Birnberg N. Expression of the H-ras oncogene induces potassium conductance and neuron-specific potassium channel mRNAs in the AtT20 cell line. Journal Of Neuroscience 1992, 12: 2007-2014. PMID: 1607925, PMCID: PMC6575920, DOI: 10.1523/jneurosci.12-06-02007.1992.Peer-Reviewed Original ResearchConceptsRas-transfected cellsAtT20 cell lineAtT20 cellsEJ-ras oncogeneCell linesPotassium channelsVoltage-dependent potassium channelsRas proteinsPituitary-derived cellsMRNA speciesPlasma membraneSpliced productsPotassium channel mRNASame geneChannel mRNADifferential expressionPotassium currentExcitable cellsVoltage-dependent potassium currentsTwo- to threefold increaseMRNAOncogeneSpeciesExpressionPhenotype
1991
The molecular biology of K+ channels
Perney T, Kaczmarek L. The molecular biology of K+ channels. Current Opinion In Cell Biology 1991, 3: 663-670. PMID: 1772658, DOI: 10.1016/0955-0674(91)90039-2.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus Statements