2016
CFTR-associated ligand is a negative regulator of Mrp2 expression
Li M, Soroka CJ, Harry K, Boyer JL. CFTR-associated ligand is a negative regulator of Mrp2 expression. American Journal Of Physiology - Cell Physiology 2016, 312: c40-c46. PMID: 27834195, PMCID: PMC5283898, DOI: 10.1152/ajpcell.00100.2016.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAnimalsCarrier ProteinsCells, CulturedChlorocebus aethiopsCOS CellsDown-RegulationGene Expression RegulationGolgi Matrix ProteinsHepatocytesHumansMaleMembrane ProteinsMembrane Transport ProteinsMiceMultidrug Resistance-Associated Protein 2Multidrug Resistance-Associated ProteinsRatsRats, Sprague-DawleySignal TransductionConceptsPull-down assaysGST pull-down assaysCOOH-terminal PDZNegative regulatorCotransfected COS-7 cellsGlutathione S-transferase fusion proteinS-transferase fusion proteinATP-binding cassette (ABC) transportersTrans-Golgi networkCystic fibrosis transmembrane conductance regulatorProtein-protein interactionsExchanger regulatory factor 1Fibrosis transmembrane conductance regulatorStreptavidin pull-down assaysTransmembrane conductance regulatorCOS-7 cellsRegulatory factor 1PDZ domainCell surface expressionPosttranscriptional regulationTransmembrane proteinPlasma membraneLLC-PK1 cellsCassette transportersCOS-7
1998
Endotoxin downregulates rat hepatic ntcp gene expression via decreased activity of critical transcription factors.
Trauner M, Arrese M, Lee H, Boyer J, Karpen S. Endotoxin downregulates rat hepatic ntcp gene expression via decreased activity of critical transcription factors. Journal Of Clinical Investigation 1998, 101: 2092-2100. PMID: 9593765, PMCID: PMC508797, DOI: 10.1172/jci1680.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBile Acids and SaltsCarrier ProteinsCells, CulturedCholestasisDNA-Binding ProteinsDown-RegulationEndotoxinsGene Expression RegulationHepatocyte Nuclear Factor 1Hepatocyte Nuclear Factor 1-alphaHepatocyte Nuclear Factor 1-betaLiverMaleMembrane Transport ProteinsNuclear ProteinsOrganic Anion Transporters, Sodium-DependentPromoter Regions, GeneticRatsRats, Sprague-DawleyRNA, MessengerSepsisSymportersTranscription FactorsConceptsNuclear binding activityNtcp mRNA levelsMRNA levelsHepatobiliary transportersMRNA expressionCritical transcription factorTime pointsSepsis-associated cholestasisNuclear factor-kappaBSodium-dependent uptakeEffector cytokinesSequential time pointsEndotoxin administrationPretreatment levelsBinding activityMaximal decreaseBile acidsFactor-kappaBHepatocyte nuclear factor 1Normal levelsHepatic basolateral membraneNuclear factorMarked reductionCoordinated downregulationEndotoxin
1997
The rat canalicular conjugate export pump (Mrp2) is down-regulated in intrahepatic and obstructive cholestasis
Trauner M, Arrese M, Soroka C, Ananthanarayanan M, Koeppel T, Schlosser S, Suchy F, Keppler D, Boyer J. The rat canalicular conjugate export pump (Mrp2) is down-regulated in intrahepatic and obstructive cholestasis. Gastroenterology 1997, 113: 255-264. PMID: 9207286, DOI: 10.1016/s0016-5085(97)70103-3.Peer-Reviewed Original ResearchAnimalsATP-Binding Cassette TransportersBile CanaliculiBlotting, NorthernBlotting, WesternCholestasisCholestasis, IntrahepaticCommon Bile DuctDown-RegulationDrug Resistance, MultipleEthinyl EstradiolFluorescent Antibody Technique, IndirectGene Expression RegulationLipopolysaccharidesMaleMultidrug Resistance-Associated ProteinsRatsRats, Sprague-DawleyRNA, MessengerExpression of the rat liver Na+/taurocholate cotransporter is regulated in vivo by retention of biliary constituents but not their depletion
Gartung C, Schuele S, Schlosser S, Boyer J. Expression of the rat liver Na+/taurocholate cotransporter is regulated in vivo by retention of biliary constituents but not their depletion. Hepatology 1997, 25: 284-290. PMID: 9021935, DOI: 10.1002/hep.510250205.Peer-Reviewed Original Research
1996
Down-regulation of expression and function of the rat liver Na+/bile acid cotransporter in extrahepatic cholestasis
Gartung C, Ananthanarayanan M, Rahman M, Schuele S, Nundy S, Soroka C, Stolz A, Suchy F, Boyer J. Down-regulation of expression and function of the rat liver Na+/bile acid cotransporter in extrahepatic cholestasis. Gastroenterology 1996, 110: 199-209. PMID: 8536857, DOI: 10.1053/gast.1996.v110.pm8536857.Peer-Reviewed Original ResearchMeSH Keywords3-alpha-Hydroxysteroid Dehydrogenase (B-Specific)3-Hydroxysteroid DehydrogenasesAnimalsCarrier ProteinsCholestasis, ExtrahepaticCommon Bile DuctDown-RegulationHomeostasisLigationLiverMaleOrganic Anion Transporters, Sodium-DependentProteinsRatsRats, Sprague-DawleyRNA, MessengerSymportersTaurocholic AcidTissue DistributionTranscription, GeneticConceptsEcto-adenosine triphosphataseRegulation of expressionMolecular regulationPosttranscriptional regulationGene transcriptionSteady-state messenger RNA levelsTranscriptional activityAcid transportersProtective feedback mechanismComplementary DNAAcid cotransporterMessenger RNA levelsSodium-dependent taurocholateTranscriptionRNA levelsRegulationBile acid transporterMRNA levelsHepatic bile acid transportersCanalicular localizationTaurocholate uptakeAlpha-hydroxysteroid dehydrogenaseExpressionNtcp proteinTriphosphatase