2001
Bile salt export pump is highly conserved during vertebrate evolution and its expression is inhibited by PFIC type II mutations
Cai S, Wang L, Ballatori N, Boyer J. Bile salt export pump is highly conserved during vertebrate evolution and its expression is inhibited by PFIC type II mutations. AJP Gastrointestinal And Liver Physiology 2001, 281: g316-g322. PMID: 11447010, DOI: 10.1152/ajpgi.2001.281.2.g316.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsATP Binding Cassette Transporter, Subfamily B, Member 11ATP-Binding Cassette TransportersBiological TransportCholestasis, IntrahepaticCloning, MolecularConserved SequenceEvolution, MolecularHumansLiverMolecular Sequence DataMutationPhylogenyRNA, MessengerSequence Homology, Amino AcidSkates, FishSpodopteraTaurocholic AcidTransfectionConceptsSf9 cellsATP-dependent transport proteinsFull-length cloneATP-dependent export pumpLiver cDNA libraryNorthern blot analysisStructure-function relationshipsVertebrate evolutionEvolutionary originHuman BSEPBile salt export pump BSEPMutant proteinsSkate Raja erinaceaHigher vertebratesCDNA libraryTransport proteinsSixfold stimulationVertebratesType II mutationAmino acidsRaja erinaceaDefective expressionBlot analysisExport pumpMutations
2000
ATP-dependent GSH and glutathioneS-conjugate transport in skate liver: role of an Mrp functional homologue
Rebbeor J, Connolly G, Henson J, Boyer J, Ballatori N. ATP-dependent GSH and glutathioneS-conjugate transport in skate liver: role of an Mrp functional homologue. AJP Gastrointestinal And Liver Physiology 2000, 279: g417-g425. PMID: 10915652, DOI: 10.1152/ajpgi.2000.279.2.g417.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsAnion Transport ProteinsAnionsATP-Binding Cassette TransportersBileBiological TransportCarrier ProteinsCell MembraneEnzyme InhibitorsGlutathioneLiverMaleOxidation-ReductionProtein BindingRatsRats, Sprague-DawleySkates, FishSubstrate SpecificityTaurocholic AcidTritiumConceptsATP-dependent transportLiver membrane vesiclesATP-dependent GSH transportMembrane vesiclesTransport activityATP-independent mechanismGlutathione-conjugate transportFunctional homologueMammalian cellsDNP-SG uptakePlasma membraneHomologous proteinsSkate liverGSH transportLow-affinity pathwayLittle skateMRP familyMultidrug resistance-associated protein 1GSH effluxFunctional assaysProtein 1First direct evidenceProtein bandsDirect evidenceHomologuesBile salt excretion in skate liver is mediated by a functional analog of Bsep/Spgp, the bile salt export pump
Ballatori N, Rebbeor J, Connolly G, Seward D, Lenth B, Henson J, Sundaram P, Boyer J. Bile salt excretion in skate liver is mediated by a functional analog of Bsep/Spgp, the bile salt export pump. AJP Gastrointestinal And Liver Physiology 2000, 278: g57-g63. PMID: 10644562, DOI: 10.1152/ajpgi.2000.278.1.g57.Peer-Reviewed Original ResearchConceptsTransport activityPlasma membrane vesiclesApparent molecular massVertebrate evolutionATP-dependent componentMultidrug resistance protein 1Similar transport activityFunctional characterizationPlasma membraneApical localizationCanalicular membraneResistance protein 1Liver plasma membrane vesiclesATP-dependent uptakeSkate liverMembrane vesiclesWestern blot analysisDominant protein bandsMammalian liverMolecular massLittle skateFunctional analogueProtein 1Raja erinaceaCanalicular multidrug resistance
1999
Hepatic sequestration and modulation of the canalicular transport of the organic cation, daunorubicin, in the rat
Hayes J, Soroka C, Rios‐Velez L, Boyer J. Hepatic sequestration and modulation of the canalicular transport of the organic cation, daunorubicin, in the rat. Hepatology 1999, 29: 483-493. PMID: 9918926, DOI: 10.1002/hep.510290216.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnti-Bacterial AgentsAntineoplastic AgentsATP Binding Cassette Transporter, Subfamily B, Member 1BileBile CanaliculiBiological TransportBucladesineCationsChloroquineDaunorubicinKineticsLiverMacrolidesMaleMitochondrial ProteinsNocodazoleRatsRats, WistarRibosomal ProteinsSaccharomyces cerevisiae ProteinsTaurocholic AcidVerapamilConceptsBiliary excretionCoadministration of verapamilInhibitors of MDR1Rat hepatocyte coupletsBiliary recoveryDose administeredHepatic sequestrationTR- mutant ratsTherapeutic agentsExcretionDaunorubicinPericanalicular regionHepatocyte coupletsCanalicular transportRat liverBafilomycin ATaurocholateRatsIPRLIntracellular acidic compartmentsCellular localizationMicrotubule destabilizerConfocal microscopyIRHCPattern of distribution
1997
Enterohepatic circulation of scymnol sulfate in an elasmobranch, the little skate (Raja erinacea)
Fricker G, Wössner R, Drewe J, Fricker R, Boyer J. Enterohepatic circulation of scymnol sulfate in an elasmobranch, the little skate (Raja erinacea). American Journal Of Physiology 1997, 273: g1023-g1030. PMID: 9374698, DOI: 10.1152/ajpgi.1997.273.5.g1023.Peer-Reviewed Original ResearchConceptsEnterohepatic circulationScymnol sulfateBile alcohol sulfatesBile flowBiliary secretionCholeretic effectMajor bile saltsHepatic uptakeHepatic eliminationIntestinal epitheliumBileLiverSkate liverHepatic transportSpecific transport mechanismsBile alcoholsMajor metaboliteFirst direct demonstrationBile saltsCholyltaurinePerfusateLittle skatePolar metabolitesCompetitive mannerDirect demonstrationExpression 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
Active microtubule-dependent secretion of a fluorescent bile salt derivative in skate hepatocyte clusters
Miller D, Fricker G, Schramm U, Henson J, Hager D, Nundy S, Ballatori N, Boyer J. Active microtubule-dependent secretion of a fluorescent bile salt derivative in skate hepatocyte clusters. American Journal Of Physiology 1996, 270: g887-g896. PMID: 8764193, DOI: 10.1152/ajpgi.1996.270.6.g887.Peer-Reviewed Original ResearchTauroursodeoxycholic acid activates protein kinase C in isolated rat hepatocytes
Beuers U, Throckmorton D, Anderson, Isales C, Thasler W, Kullak-Ublick G, Sauter G, Koebe H, Paumgartner G, Boyer J. Tauroursodeoxycholic acid activates protein kinase C in isolated rat hepatocytes. Gastroenterology 1996, 110: 1553-1563. PMID: 8613063, DOI: 10.1053/gast.1996.v110.pm8613063.Peer-Reviewed Original ResearchConceptsEffect of TUDCATauroursodeoxycholic acidProtein kinase CHepatocellular Ca2Chronic cholestatic liver diseaseCholestatic liver diseaseAlpha-PKCPKC activityLiver diseaseLiver functionRadioenzymatic techniqueExperimental cholestasisPhorbol ester phorbolActivation of PKCKinase CTaurocholic acidImmunofluorescence techniqueAbstractTextMembrane-associated PKC activitySignificant increaseAIMSStimulation of exocytosisUnknown mechanismParticulate membrane fractionHepatocytesDown-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
1995
Expression of sodium-independent organic anion uptake systems of skate liver in Xenopus laevis oocytes
Jacquemin E, Hagenbuch B, Wolkoff A, Meier P, Boyer J. Expression of sodium-independent organic anion uptake systems of skate liver in Xenopus laevis oocytes. American Journal Of Physiology 1995, 268: g18-g23. PMID: 7840202, DOI: 10.1152/ajpgi.1995.268.1.g18.Peer-Reviewed Original ResearchConceptsBSP uptakeSkate liverTaurocholate uptakeXenopus laevis oocytesOrganic anion transport systemInjection of oocytesLaevis oocytesLiverAnion transport systemRat liverSulfobromophthalein uptakeUptake systemOocytesMRNADisulfonic acidUptake activityFunctional expressionLiver mRNAUptakeExpressionSerum albuminLower vertebrates
1994
Expression and characterization of a functional rat liver Na+ bile acid cotransport system in COS-7 cells
Boyer J, Ng O, Ananthanarayanan M, Hofmann A, Schteingart C, Hagenbuch B, Stieger B, Meier P. Expression and characterization of a functional rat liver Na+ bile acid cotransport system in COS-7 cells. American Journal Of Physiology 1994, 266: g382-g387. PMID: 8166278, DOI: 10.1152/ajpgi.1994.266.3.g382.Peer-Reviewed Original ResearchConceptsCOS-7 cellsCotransport systemBile acid transporterUrsodeoxycholic acidTaurochenodeoxycholic acidAcid cotransport systemTauroursodeoxycholic acidBile acidsRat hepatocytesAbsence of sodiumChenodeoxycholic acidCOS cellsEmpty plasmidPMAMneo vectorCholic acidBile acid cotransporterMicroM bilirubinRat liverEvidence of expressionCell linesAcid transportersPosttranslational factorsProgressive uptakeCotransporterAcid cotransporter
1993
Characterization of bumetanide transport in isolated skate hepatocytes
Blumrich M, Petzinger E, Boyer J. Characterization of bumetanide transport in isolated skate hepatocytes. American Journal Of Physiology 1993, 265: g926-g933. PMID: 8238522, DOI: 10.1152/ajpgi.1993.265.5.g926.Peer-Reviewed Original ResearchPhylogenic and ontogenic expression of hepatocellular bile acid transport.
Boyer J, Hagenbuch B, Ananthanarayanan M, Suchy F, Stieger B, Meier P. Phylogenic and ontogenic expression of hepatocellular bile acid transport. Proceedings Of The National Academy Of Sciences Of The United States Of America 1993, 90: 435-438. PMID: 8421672, PMCID: PMC45677, DOI: 10.1073/pnas.90.2.435.Peer-Reviewed Original ResearchConceptsAcid transportMammalian speciesFull-length cDNA probeDependent bile acid transportMammalian fetal developmentAcid cotransport systemVertebrate evolutionBile acid transportOntogenic expressionLower vertebratesNonmammalian speciesPrior functional studiesHepatoma cell lineNorthern analysisAcid transportersDedifferentiated hepatocytesCDNA probeTransport systemAcid cotransporterFunctional studiesXenopus oocytesSmall skateSpeciesMRNACell lines
1990
Taurocholate stimulates transcytotic vesicular pathways labeled by horseradish peroxidase in the isolated perfused rat liver
Hayakawa T, Cheng O, Ma A, Boyer J. Taurocholate stimulates transcytotic vesicular pathways labeled by horseradish peroxidase in the isolated perfused rat liver. Gastroenterology 1990, 99: 216-228. PMID: 2344927, DOI: 10.1016/0016-5085(90)91251-z.Peer-Reviewed Original Research
1989
Voltage-driven, taurocholate-dependent secretion in isolated hepatocyte couplets
Weinman S, Graf J, Boyer J. Voltage-driven, taurocholate-dependent secretion in isolated hepatocyte couplets. American Journal Of Physiology 1989, 256: g826-g832. PMID: 2719107, DOI: 10.1152/ajpgi.1989.256.5.g826.Peer-Reviewed Original ResearchConceptsBile secretionBile acidsSecretion rateFluid secretionIntracellular current injectionCanalicular areaHepatocyte coupletsMembrane potentialRat hepatocyte coupletsAbsence of taurocholateMicroM taurocholateFluid secretion rateBile formationSecretionCarrier-mediated transportTaurocholateLiverIntracellular voltageQuantitative assessment of canalicular bile formation in isolated hepatocyte couplets using microscopic optical planimetry.
Gautam A, Ng O, Strazzabosco M, Boyer J. Quantitative assessment of canalicular bile formation in isolated hepatocyte couplets using microscopic optical planimetry. Journal Of Clinical Investigation 1989, 83: 565-573. PMID: 2913052, PMCID: PMC303716, DOI: 10.1172/jci113919.Peer-Reviewed Original Research
1988
Tubulovesicular Transcytotic Pathway in Isolated Rat Hepatocyte Couplets in Culture Effect of Colchicine and Taurocholate
Sakisaka S, Ng O, Boyer J. Tubulovesicular Transcytotic Pathway in Isolated Rat Hepatocyte Couplets in Culture Effect of Colchicine and Taurocholate. Gastroenterology 1988, 95: 793-804. PMID: 3396824, DOI: 10.1016/s0016-5085(88)80030-1.Peer-Reviewed Original Research
1987
Identification of a single sinusoidal bile salt uptake system in skate liver
Fricker G, Hugentobler G, Meier P, Kurz G, Boyer J. Identification of a single sinusoidal bile salt uptake system in skate liver. American Journal Of Physiology 1987, 253: g816-g822. PMID: 3425718, DOI: 10.1152/ajpgi.1987.253.6.g816.Peer-Reviewed Original ResearchConceptsBile salt uptakeSkate liverAlpha-dihydroxy-5 betaBile salt derivativesAzo-3 alphaBile acid uptakeConcentration-dependent mannerPredominant bile saltHepatic uptakePhotolabile bile salt derivativeIndependent transport mechanismsAcid uptakeLiverApparent molecular weightBile saltsRat liverTaurocholate uptakeSkate hepatocytesAnion transport inhibitorUptake systemHepatocytesPhotoaffinity labelingTaurocholateDisulfonic acidIrreversible inhibitionTaurocholate uptake by isolated skate hepatocytes: effect of albumin
Smith D, Grossbard M, Gordon E, Boyer J. Taurocholate uptake by isolated skate hepatocytes: effect of albumin. American Journal Of Physiology 1987, 252: g479-g484. PMID: 3565567, DOI: 10.1152/ajpgi.1987.252.4.g479.Peer-Reviewed Original ResearchProperties of the canalicular bile acid transport system in rat liver
Meier P, Meier-Abt A, Boyer J. Properties of the canalicular bile acid transport system in rat liver. Biochemical Journal 1987, 242: 465-469. PMID: 3593261, PMCID: PMC1147728, DOI: 10.1042/bj2420465.Peer-Reviewed Original Research