2024
Ion channels in osteoarthritis: emerging roles and potential targets
Zhou R, Fu W, Vasylyev D, Waxman S, Liu C. Ion channels in osteoarthritis: emerging roles and potential targets. Nature Reviews Rheumatology 2024, 20: 545-564. PMID: 39122910, DOI: 10.1038/s41584-024-01146-0.Peer-Reviewed Original ResearchIon channelsVoltage-dependent calcium channelsAcid-sensing ion channelsTransient receptor potential channelsVoltage-gated sodium channelsIon channel modulatorsFunction of ion channelsPotential clinical applicationsCalcium channelsPreclinical studiesClinical impactSymptomatic reliefPotassium channelsChloride channelsDisease-modifying treatmentsClinical trialsSodium channelsBone hyperplasiaChannel modulationIon channel biologySynovial inflammationClinical applicationPiezo channelsModel of OAPotential target
2023
Targeting a Peripheral Sodium Channel to Treat Pain
Waxman S. Targeting a Peripheral Sodium Channel to Treat Pain. New England Journal Of Medicine 2023, 389: 466-469. PMID: 37530829, DOI: 10.1056/nejme2305708.Peer-Reviewed Original ResearchGenetic Profiling of Sodium Channels in Diabetic Painful and Painless and Idiopathic Painful and Painless Neuropathies
Almomani R, Sopacua M, Marchi M, Ślęczkowska M, Lindsey P, de Greef B, Hoeijmakers J, Salvi E, Merkies I, Ferdousi M, Malik R, Ziegler D, Derks K, Boenhof G, Martinelli-Boneschi F, Cazzato D, Lombardi R, Dib-Hajj S, Waxman S, Smeets H, Gerrits M, Faber C, Lauria G, Group O. Genetic Profiling of Sodium Channels in Diabetic Painful and Painless and Idiopathic Painful and Painless Neuropathies. International Journal Of Molecular Sciences 2023, 24: 8278. PMID: 37175987, PMCID: PMC10179245, DOI: 10.3390/ijms24098278.Peer-Reviewed Original ResearchConceptsDiabetic peripheral neuropathySmall fiber neuropathyPainless neuropathySFN patientsPainful neuropathyPeripheral neuropathyNeuropathy patientsPainless diabetic peripheral neuropathyPathogenic variantsPersonalized pain treatmentPainful peripheral neuropathyDifferent pathogenic variantsGenetic profilingSodium channel genePotential pathogenic variantsDPN patientsNeuropathic painNociceptive pathwaysPain treatmentNeuropathyPatientsSodium channelsFrequent featureDifferent centersSCN7APain-causing stinging nettle toxins target TMEM233 to modulate NaV1.7 function
Jami S, Deuis J, Klasfauseweh T, Cheng X, Kurdyukov S, Chung F, Okorokov A, Li S, Zhang J, Cristofori-Armstrong B, Israel M, Ju R, Robinson S, Zhao P, Ragnarsson L, Andersson Å, Tran P, Schendel V, McMahon K, Tran H, Chin Y, Zhu Y, Liu J, Crawford T, Purushothamvasan S, Habib A, Andersson D, Rash L, Wood J, Zhao J, Stehbens S, Mobli M, Leffler A, Jiang D, Cox J, Waxman S, Dib-Hajj S, Neely G, Durek T, Vetter I. Pain-causing stinging nettle toxins target TMEM233 to modulate NaV1.7 function. Nature Communications 2023, 14: 2442. PMID: 37117223, PMCID: PMC10147923, DOI: 10.1038/s41467-023-37963-2.Peer-Reviewed Original ResearchConceptsSensory neuronsVoltage-sensing domainNav channelsTransmembrane proteinAccessory proteinsVoltage-gated sodium channelsCritical regulatorPore domainChannel gatingExtracellular loopToxin-mediated effectsNeuronal excitabilityPeptide toxinsProteinSodium channelsPharmacological activitiesNav1.7 functionKnottin peptidesNeuronsImportant insightsToxinSubunitsRegulatorDomainExcelsaVoltage-gated sodium channels (Na<sub>V</sub>) in GtoPdb v.2023.1
Catterall W, Goldin A, Waxman S. Voltage-gated sodium channels (NaV) in GtoPdb v.2023.1. IUPHAR/BPS Guide To Pharmacology CITE 2023, 2023 DOI: 10.2218/gtopdb/f82/2023.1.Peer-Reviewed Original ResearchTransmembrane segmentsLarge extracellular N-terminal domainSingle transmembrane segmentPotassium channel structureShort cytoplasmic domainFourth transmembrane segmentN-terminal domainExtracellular N-terminal domainSodium channelsMost excitable cellsNC-IUPHAR SubcommitteeGlutamate side chainCytoplasmic domainFatty acyl chainsHomologous domainsNovel structural featuresVoltage-gated sodium channelsShort selectivity filterSodium-selective ion channelsΒ-subunitChannel gatingSelectivity filterIon channelsSubunitsPore regionConserved but not critical: Trafficking and function of NaV1.7 are independent of highly conserved polybasic motifs
Tyagi S, Sarveswaran N, Higerd-Rusli G, Liu S, Dib-Hajj F, Waxman S, Dib-Hajj S. Conserved but not critical: Trafficking and function of NaV1.7 are independent of highly conserved polybasic motifs. Frontiers In Molecular Neuroscience 2023, 16: 1161028. PMID: 37008789, PMCID: PMC10060856, DOI: 10.3389/fnmol.2023.1161028.Peer-Reviewed Original ResearchSensory axonsPeripheral voltage-gated sodium channelsMajor unmet clinical needFunction of Nav1.7Non-addictive treatmentsUnmet clinical needVoltage-clamp recordingsVoltage-gated sodium channelsPain therapyChronic painPrimary afferentsNoxious stimuliTherapeutic modalitiesAction potentialsAxonal transportClinical needVesicular packagingSodium channelsHuman painPainAxonal traffickingAxonal surfaceAxonal membraneAxonsAttractive targetHigh-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
2022
Non-psychotropic phytocannabinoid interactions with voltage-gated sodium channels: An update on cannabidiol and cannabigerol
Ghovanloo M, Dib-Hajj S, Goodchild S, Ruben P, Waxman S. Non-psychotropic phytocannabinoid interactions with voltage-gated sodium channels: An update on cannabidiol and cannabigerol. Frontiers In Physiology 2022, 13: 1066455. PMID: 36439273, PMCID: PMC9691960, DOI: 10.3389/fphys.2022.1066455.Peer-Reviewed Original Research
2021
Voltage-gated sodium channels (Na<sub>V</sub>) in GtoPdb v.2021.3
Catterall W, Goldin A, Waxman S. Voltage-gated sodium channels (NaV) in GtoPdb v.2021.3. IUPHAR/BPS Guide To Pharmacology CITE 2021, 2021 DOI: 10.2218/gtopdb/f82/2021.3.Peer-Reviewed Original ResearchTransmembrane segmentsLarge extracellular N-terminal domainSingle transmembrane segmentPotassium channel structureShort cytoplasmic domainFourth transmembrane segmentN-terminal domainExtracellular N-terminal domainSodium channelsMost excitable cellsNC-IUPHAR SubcommitteeGlutamate side chainCytoplasmic domainFatty acyl chainsHomologous domainsNovel structural featuresVoltage-gated sodium channelsShort selectivity filterSodium-selective ion channelsΒ-subunitChannel gatingSelectivity filterIon channelsSubunitsPore region
2020
Cumulative hydropathic topology of a voltage‐gated sodium channel at atomic resolution
Xenakis M, Kapetis D, Yang Y, Heijman J, Waxman S, Lauria G, Faber C, Smeets H, Westra R, Lindsey P. Cumulative hydropathic topology of a voltage‐gated sodium channel at atomic resolution. Proteins Structure Function And Bioinformatics 2020, 88: 1319-1328. PMID: 32447794, DOI: 10.1002/prot.25951.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceArcobacterBacterial ProteinsBinding SitesHydrophobic and Hydrophilic InteractionsIon Channel GatingModels, MolecularProtein BindingProtein Conformation, alpha-HelicalProtein Conformation, beta-StrandProtein Interaction Domains and MotifsSodiumThermodynamicsVoltage-Gated Sodium ChannelsConceptsVoltage-gated sodium channelsBacterial channelsPhysiological cellular activitySodium channelsCellular activitiesCell membraneBiological poresPore stabilityAtomic resolutionBiophysical significanceMembrane surfaceHydropathicityGenesProteinMutationsWide spectrumMembraneFunctional architectureAccumulationComputational frameworkSodium ionsPores
2019
Voltage-gated sodium channels (version 2019.4) in the IUPHAR/BPS Guide to Pharmacology Database
Catterall W, Goldin A, Waxman S. Voltage-gated sodium channels (version 2019.4) in the IUPHAR/BPS Guide to Pharmacology Database. IUPHAR/BPS Guide To Pharmacology CITE 2019, 2019 DOI: 10.2218/gtopdb/f82/2019.4.Peer-Reviewed Original ResearchTransmembrane segmentsLarge extracellular N-terminal domainSingle transmembrane segmentPotassium channel structureShort cytoplasmic domainFourth transmembrane segmentN-terminal domainExtracellular N-terminal domainSodium channelsMost excitable cellsNC-IUPHAR SubcommitteeGlutamate side chainCytoplasmic domainFatty acyl chainsHomologous domainsNovel structural featuresShort selectivity filterVoltage-gated sodium channelsSodium-selective ion channelsΒ-subunitChannel gatingSelectivity filterIUPHAR/BPS GuideIon channelsSubunitsSodium Channels and Pain
Cummins T, Waxman S, Wood J. Sodium Channels and Pain. 2019, 233-262. DOI: 10.1093/oxfordhb/9780190860509.013.3.Peer-Reviewed Original ResearchSodium channel blockersPain conditionsChannel blockersSodium channelsAnalgesic drug targetsDifferent pain statesFunction Nav1.7 mutationsMost pain conditionsPeripheral sodium channelsSodium channel subtypesDamage-sensing neuronsDrug developmentVoltage-gated sodium channelsSodium channel isoformsDrug development programsIon channelsExcellent analgesicPain controlPain reliefPain statesNav1.7 mutationSodium-selective ion channelsNew analgesicsLocal anestheticsTherapeutic approaches
2018
Nonmuscle myosin II isoforms interact with sodium channel alpha subunits
Dash B, Han C, Waxman S, Dib-Hajj S. Nonmuscle myosin II isoforms interact with sodium channel alpha subunits. Molecular Pain 2018, 14: 1744806918788638. PMID: 29956586, PMCID: PMC6052497, DOI: 10.1177/1744806918788638.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsAnkyrinsBrainCell Line, TransformedElectric StimulationGanglia, SpinalGene Expression RegulationGreen Fluorescent ProteinsHumansImmunoprecipitationMiceMice, Inbred C57BLMice, TransgenicMolecular Motor ProteinsMyosin Heavy ChainsNAV1.6 Voltage-Gated Sodium ChannelNonmuscle Myosin Type IIBPatch-Clamp TechniquesRatsTransfectionConceptsSodium channel alpha subunitND7/23 cellsChannel alpha subunitDorsal root ganglion tissueAlpha subunitMyosin II motor proteinsNonmuscle myosin II isoformsRodent nervous tissueRodent brain tissueSteady-state fast inactivationVoltage-sensitive channelsFast inactivationVoltage-dependent activationSodium channel alphaGanglion tissueIsoform-dependent mannerMyosin II isoformsNervous tissueRecombinant myosinBrain tissueCommon structural motifRamp currentsMotor proteinsCellular excitabilitySodium channels
2016
Pharmacological reversal of a pain phenotype in iPSC-derived sensory neurons and patients with inherited erythromelalgia
Cao L, McDonnell A, Nitzsche A, Alexandrou A, Saintot PP, Loucif AJ, Brown AR, Young G, Mis M, Randall A, Waxman SG, Stanley P, Kirby S, Tarabar S, Gutteridge A, Butt R, McKernan RM, Whiting P, Ali Z, Bilsland J, Stevens EB. Pharmacological reversal of a pain phenotype in iPSC-derived sensory neurons and patients with inherited erythromelalgia. Science Translational Medicine 2016, 8: 335ra56. PMID: 27099175, DOI: 10.1126/scitranslmed.aad7653.Peer-Reviewed Original ResearchConceptsSensory neuronsPain conditionsSodium channelsClinical phenotypeSensory neuronal activityChronic pain conditionsHeat-induced painPeripheral nervous systemUnmet clinical needSodium channel Nav1.7Nav1.7 sodium channelNav1.7 blockersPharmacological reversalPain phenotypesExtreme painNeuronal activityHeat stimuliNervous systemChannel Nav1.7PainClinical needPatientsAberrant responsesSensory conditionsInduced pluripotent stem cell line
2015
De novo gain-of-function and loss-of-function mutations of SCN8A in patients with intellectual disabilities and epilepsy
Blanchard MG, Willemsen MH, Walker JB, Dib-Hajj SD, Waxman SG, Jongmans M, Kleefstra T, van de Warrenburg BP, Praamstra P, Nicolai J, Yntema HG, Bindels R, Meisler MH, Kamsteeg EJ. De novo gain-of-function and loss-of-function mutations of SCN8A in patients with intellectual disabilities and epilepsy. Journal Of Medical Genetics 2015, 52: 330. PMID: 25725044, PMCID: PMC4413743, DOI: 10.1136/jmedgenet-2014-102813.Peer-Reviewed Original ResearchConceptsClinical exome sequencingClinical featuresEarly-infantile epileptic encephalopathy type 13Intellectual disabilityVoltage-gated sodium channel Nav1.6De novo SCN8A mutationFunction mutationsExome sequencingSodium channel Nav1.6Variable clinical featuresGenotype-phenotype correlationSCN8A mutationsChannel Nav1.6Hyperpolarising shiftMutant sodium channelsPatientsDe novoHeterozygous lossSodium channelsElectrophysiological analysisClinical interpretationType 13DisabilitySeizuresWildtype channelSodium Channels
Lampert A, Stühmer W, Waxman S. Sodium Channels. 2015, 1-7. DOI: 10.1002/9780470015902.a0000127.pub2.Peer-Reviewed Original Research
2012
Gain-of-function Nav1.8 mutations in painful neuropathy
Faber CG, Lauria G, Merkies IS, Cheng X, Han C, Ahn HS, Persson AK, Hoeijmakers JG, Gerrits MM, Pierro T, Lombardi R, Kapetis D, Dib-Hajj SD, Waxman SG. Gain-of-function Nav1.8 mutations in painful neuropathy. Proceedings Of The National Academy Of Sciences Of The United States Of America 2012, 109: 19444-19449. PMID: 23115331, PMCID: PMC3511073, DOI: 10.1073/pnas.1216080109.Peer-Reviewed Original ResearchConceptsPainful peripheral neuropathySmall fiber neuropathyPainful neuropathyPeripheral neuropathyPainful small fiber neuropathyDorsal root ganglion neuronsSodium channelsApparent underlying causePeripheral nerve axonsDRG neuronsGanglion neuronsNeuropathyNerve axonsUnderlying causeFunction variantsCurrent clampPatientsPotential pathogenicityNeuronsMutationsHyperexcitabilityAxonsResponseGenetic aspects of sodium channelopathy in small fiber neuropathy
Hoeijmakers J, Merkies I, Gerrits M, Waxman S, Faber C. Genetic aspects of sodium channelopathy in small fiber neuropathy. Clinical Genetics 2012, 82: 351-358. PMID: 22803682, DOI: 10.1111/j.1399-0004.2012.01937.x.Peer-Reviewed Original ResearchConceptsSmall fiber neuropathyEtiology of SFNSmall-diameter peripheral axonsIntraepidermal nerve fiber densityDorsal root ganglion neuronsAbnormal thermal thresholdsNerve fiber densityQuantitative sensory testingUnmyelinated C-fibersSFN patientsAutonomic dysfunctionNeuropathic painAδ fibersGanglion neuronsC-fibersPeripheral axonsSensory testingSpecific treatmentSodium channelopathiesApparent causeFiber densitySodium channelsLogical targetNeuropathyPainAxonal Protection with Sodium Channel Blocking Agents in Models of Multiple Sclerosis
Black J, Smith K, Waxman S. Axonal Protection with Sodium Channel Blocking Agents in Models of Multiple Sclerosis. 2012, 179-201. DOI: 10.1007/978-1-4614-2218-1_8.Peer-Reviewed Original ResearchExperimental autoimmune encephalomyelitisMultiple sclerosisSodium channelsAspects of MSAcute MS plaquesChronic inactive plaquesSignificant axonal damageImmune cell infiltrationSodium channel blockadeChannel Blocking AgentsSpinal cord axonsWhite matter axonsVoltage-gated sodium channelsAction potential conductionInactive plaquesClinical disabilityAutoimmune encephalomyelitisAxonal protectionNeuroinflammatory disordersNeurological deficitsNeuroprotective therapiesAxonal damageIschemia injuryAxonal degenerationAxonal injury
2011
Sodium channels and microglial function
Black JA, Waxman SG. Sodium channels and microglial function. Experimental Neurology 2011, 234: 302-315. PMID: 21985863, DOI: 10.1016/j.expneurol.2011.09.030.Peer-Reviewed Original ResearchConceptsCentral nervous systemSodium channel isoformsEffector functionsChannel isoformsMultiple cytokines/chemokinesResident immune cellsResponse of microgliaCytokines/chemokinesVoltage-gated sodium channel isoformsSpinal cord parenchymaSodium channel activityMicroglial functionPromotion of repairCord parenchymaImmune cellsMicrogliaNervous systemCell surface receptorsContinuous surveillanceAdhesion moleculesSodium channelsActivating signalsChannel activitySignaling pathwaysSurface receptors