2009
Transcriptional regulation of IL-6 in bile duct epithelia by extracellular ATP
Yu J, Sheung N, Soliman EM, Spirli C, Dranoff JA. Transcriptional regulation of IL-6 in bile duct epithelia by extracellular ATP. AJP Gastrointestinal And Liver Physiology 2009, 296: g563-g571. PMID: 19136380, PMCID: PMC2660176, DOI: 10.1152/ajpgi.90502.2008.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsAntibodiesBile DuctsCalciumCalcium SignalingCell Line, TransformedCell Line, TumorCyclic AMPEpithelial CellsExtracellular SpaceFibroblastsHumansImmunoblottingInterleukin-6MaleMutagenesis, Site-DirectedPromoter Regions, GeneticRatsRats, Sprague-DawleyReceptors, Purinergic P2Response ElementsRNA, MessengerSignal TransductionTranscriptional ActivationConceptsBile duct epitheliumIL-6IL-6 transcriptionDuct epitheliumLiver injuryCAMP response elementP2Y11 receptorInflammatory cytokines IL-6Extracellular ATPIL-6 upregulationUse of agonistsRat bile duct epitheliaCytokines IL-6IL-6 releaseIL-6 promoter activityIL-6 mRNAExtracellular ATP actsCalcium agonistP2Y receptorsPharmacological profileHepatic responseCalcium-dependent fashionExtracellular nucleotidesCytosolic calciumPurinergic signals
2005
Secretion of MCP-1/CCL2 by bile duct epithelia induces myofibroblastic transdifferentiation of portal fibroblasts
Kruglov EA, Nathanson RA, Nguyen T, Dranoff JA. Secretion of MCP-1/CCL2 by bile duct epithelia induces myofibroblastic transdifferentiation of portal fibroblasts. AJP Gastrointestinal And Liver Physiology 2005, 290: g765-g771. PMID: 16282363, DOI: 10.1152/ajpgi.00308.2005.Peer-Reviewed Original ResearchConceptsBile duct epitheliumHepatic stellate cellsPortal fibroblastsMCP-1Biliary fibrosisDuct epitheliumMyofibroblastic transdifferentiationMCP-1/CCL2Fibrogenic liver cellsChemoattractant protein-1Ectonucleotidase NTPDase2PF proliferationAlpha-SMA levelsReceptor CCR2Stellate cellsParacrine fashionFunctional receptorsInduces proliferationImportant mediatorMuscle expressionFibrosisLiver cellsProtein 1Procollagen productionRecent evidencePortal Fibroblasts Regulate the Proliferation of Bile Duct Epithelia via Expression of NTPDase2*
Jhandier MN, Kruglov EA, Lavoie É, Sévigny J, Dranoff JA. Portal Fibroblasts Regulate the Proliferation of Bile Duct Epithelia via Expression of NTPDase2*. Journal Of Biological Chemistry 2005, 280: 22986-22992. PMID: 15799977, DOI: 10.1074/jbc.m412371200.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAnimalsBile DuctsBromodeoxyuridineCell ProliferationCholangiocarcinomaCholestasisCoculture TechniquesDNA, ComplementaryEpithelial CellsFibroblastsHumansLiverMaleMicroscopy, ConfocalMicroscopy, FluorescenceModels, BiologicalRatsRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionRNA, Small InterferingSignal TransductionTransfectionConceptsBile ductular proliferationExpression of NTPDase2Portal fibroblastsDuctular proliferationBile duct epitheliumNTPDase2 expressionMz-ChA-1 cellsPortal myofibroblastsP2Y receptorsDuct epitheliumBile duct-ligated ratsCell proliferationDuct-ligated ratsReal-time reverse transcription PCRQuantitative real-time reverse transcription PCRHuman cholangiocarcinoma cellsNovel co-culture modelMz-ChA-1 human cholangiocarcinoma cellsNucleotidase apyraseP2Y activationCo-culture modelObstructive cholestasisReverse transcription-PCRPathologic alterationsEpithelial proliferation
2002
The ecto‐nucleoside triphosphate diphosphohydrolase NTPDase2/CD39L1 is expressed in a novel functional compartment within the liver
Dranoff JA, Kruglov EA, Robson SC, Braun N, Zimmermann H, Sévigny J. The ecto‐nucleoside triphosphate diphosphohydrolase NTPDase2/CD39L1 is expressed in a novel functional compartment within the liver. Hepatology 2002, 36: 1135-1144. PMID: 12395323, DOI: 10.1053/jhep.2002.36823.Peer-Reviewed Original ResearchConceptsIntrahepatic bile ductsExtracellular nucleotidesBile ductDiverse biological functionsBlot analysisEcto-nucleoside triphosphate diphosphohydrolasesNTPDase2/CD39L1Portal fibroblastsNorthern blot analysisCellular compartmentsBiological functionsPotential regulatorConfocal immunofluorescenceWestern blot analysisHepatic blood flowBile duct epitheliumReverse transcription-polymerase chain reactionFunctional assaysTriphosphate diphosphohydrolasesImmunoelectron microscopyFunctional compartmentsHepatic central veinNucleotidesNTPDase1NTPDase2
2001
Polarized expression and function of P2Y ATP receptors in rat bile duct epithelia
Dranoff J, Masyuk A, Kruglov E, LaRusso N, Nathanson M. Polarized expression and function of P2Y ATP receptors in rat bile duct epithelia. AJP Gastrointestinal And Liver Physiology 2001, 281: g1059-g1067. PMID: 11557527, DOI: 10.1152/ajpgi.2001.281.4.g1059.Peer-Reviewed Original ResearchConceptsP2Y receptor subtypesP2Y receptorsReceptor subtypesIntrahepatic bile duct unitsATP receptorsBile duct epitheliumMultiple P2Y receptor subtypesRat bile duct epitheliaBile duct unitsImportant regulatorLuminal ATPLuminal perfusionMolecular subtypesBile secretionDuct epitheliumBasolateral additionExtracellular nucleotidesDuctular secretionSubtypesCytosolic Ca2Duct unitsRT-PCRCholangiocytesReceptorsSecretion
1998
Stimulation of bile duct epithelial secretion by glybenclamide in normal and cholestatic rat liver.
Nathanson MH, Burgstahler AD, Mennone A, Dranoff JA, Rios-Velez L. Stimulation of bile duct epithelial secretion by glybenclamide in normal and cholestatic rat liver. Journal Of Clinical Investigation 1998, 101: 2665-2676. PMID: 9637700, PMCID: PMC508857, DOI: 10.1172/jci2835.Peer-Reviewed Original ResearchConceptsBile duct epitheliumBicarbonate excretionBile flowDuct epitheliumImportant new therapeutic targetStimulatory effectBile duct segmentsBile duct cellsRat liverNew therapeutic targetsCardinal complicationLiver diseaseCholestatic disordersSecond messenger systemsCholestatic rat liverTherapeutic targetMeasurement of cAMPGlybenclamideEpithelial secretionDuct cellsDuct segmentsHepatocyte coupletsLiverExcretionEpithelium