2025
Voltage-gated sodium channels in excitable cells as drug targets
Alsaloum M, Dib-Hajj S, Page D, Ruben P, Krainer A, Waxman S. Voltage-gated sodium channels in excitable cells as drug targets. Nature Reviews Drug Discovery 2025, 1-21. PMID: 39901031, DOI: 10.1038/s41573-024-01108-x.Peer-Reviewed Original ResearchSodium channelsChannel subtypesControl action potential firingDevelopment of drugsDensity of voltage-gated sodiumExcitable cellsAction potential firingSubtype-specific drugsSodium channel subtypesVoltage-gated sodium channelsExpressing high densitiesVoltage-gated sodiumCardiac myocytesNav1.1-Nav1.9Potential firingCardiac disordersAction potentialsMuscle cellsMolecular targetsDrugSubtypesDrug developmentCellsDrug targetsMyocytes
2024
The evolution of patch-clamp electrophysiology: Robotic, multiplex, and dynamic
Ghovanloo M, Dib-Hajj S, Waxman S. The evolution of patch-clamp electrophysiology: Robotic, multiplex, and dynamic. Molecular Pharmacology 2024, 107: 100001. PMID: 39919159, DOI: 10.1124/molpharm.124.000954.Peer-Reviewed Original ResearchPatch-clamp techniquePatch-clamp electrophysiologyPatch clampVoltage- and current-clamp modesIon channelsContribution of ion channelsCurrent-clamp modePatch-clamp methodOhm's lawDynamic-clampGating mechanisms of ion channelsMuscle cellsCardiac excitabilityGold standardExcitable cellsReceptorsGate conductionElectrophysiologyNeuronsElectrogenesisSimultaneous recordingCellsHigh-throughput automated platformMechanisms of ion channelsGating mechanism
2023
High-throughput combined voltage-clamp/current-clamp analysis of freshly isolated neurons
Ghovanloo M, Tyagi S, Zhao P, Kiziltug E, Estacion M, Dib-Hajj S, Waxman S. High-throughput combined voltage-clamp/current-clamp analysis of freshly isolated neurons. Cell Reports Methods 2023, 3: 100385. PMID: 36814833, PMCID: PMC9939380, DOI: 10.1016/j.crmeth.2022.100385.Peer-Reviewed Original ResearchConceptsDorsal root ganglion neuronsCurrent-clamp recordingsCurrent-clamp analysisVoltage-gated sodium channelsPatch-clamp techniqueExcitable cellsGanglion neuronsElectrophysiological recordingsNeuronal cellsNeuronsGold standard methodologySodium channelsCellular levelRobotic instrumentsCellsDrug screeningSame cellsIntact tissueRecordings
2012
An AnkyrinG-Binding Motif Is Necessary and Sufficient for Targeting Nav1.6 Sodium Channels to Axon Initial Segments and Nodes of Ranvier
Gasser A, Ho TS, Cheng X, Chang KJ, Waxman SG, Rasband MN, Dib-Hajj SD. An AnkyrinG-Binding Motif Is Necessary and Sufficient for Targeting Nav1.6 Sodium Channels to Axon Initial Segments and Nodes of Ranvier. Journal Of Neuroscience 2012, 32: 7232-7243. PMID: 22623668, PMCID: PMC3413458, DOI: 10.1523/jneurosci.5434-11.2012.Peer-Reviewed Original ResearchConceptsReporter proteinAxon initial segmentKinase phosphorylation siteSodium channelsIntracellular loop 2Nodes of RanvierFull-length channelGlutamic acid residuesPhosphorylation sitesMechanism of channelVoltage-gated sodium channelsAcid residuesLoop 2Functional mouseNav1.6 sodium channelsMotifProteinVivo analysisAnkyrinGSomatodendritic compartmentCultured neuronsInitial segmentVivoAction potentialsCells
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