2019
Bile Infarcts: New Insights Into the Pathogenesis of Obstructive Cholestasis
Cai S, Boyer JL. Bile Infarcts: New Insights Into the Pathogenesis of Obstructive Cholestasis. Hepatology 2019, 69: 473-475. PMID: 30251326, DOI: 10.1002/hep.30291.Peer-Reviewed Original Research
2016
A Novel Di-Leucine Motif at the N-Terminus of Human Organic Solute Transporter Beta Is Essential for Protein Association and Membrane Localization
Xu S, Soroka CJ, Sun AQ, Backos DS, Mennone A, Suchy FJ, Boyer JL. A Novel Di-Leucine Motif at the N-Terminus of Human Organic Solute Transporter Beta Is Essential for Protein Association and Membrane Localization. PLOS ONE 2016, 11: e0158269. PMID: 27351185, PMCID: PMC4924846, DOI: 10.1371/journal.pone.0158269.Peer-Reviewed Original ResearchConceptsMembrane localizationAlpha subunitBeta subunitDileucine motifPlasma membrane localizationDi-leucine motifExtracellular N-terminal regionCo-immunoprecipitation studiesBasolateral membrane localizationN-terminal regionSite-directed mutagenesisAA mutantProtein associationBeta mutantsN-terminusMultiple speciesPhysical associationMembrane biotinylationHEK293 cellsSubunitsAA mutationsMembrane expressionAlpha/betaMutantsMotif
2001
Cellular localization and up‐regulation of multidrug resistance–associated protein 3 in hepatocytes and cholangiocytes during obstructive cholestasis in rat liver
Soroka C, Lee J, Azzaroli F, Boyer J. Cellular localization and up‐regulation of multidrug resistance–associated protein 3 in hepatocytes and cholangiocytes during obstructive cholestasis in rat liver. Hepatology 2001, 33: 783-791. PMID: 11283840, DOI: 10.1053/jhep.2001.23501.Peer-Reviewed Original ResearchConceptsObstructive cholestasisMultidrug resistance-associated protein 3Bile duct-ligated animalsMultidrug resistanceToxic bile acidsModel of cholestasisDuct-ligated animalsExpression of MRP3Intensity of stainingHepatocytes of liverWestern blot analysisBile ductHepatic expressionCentral veinCholestasisMRP3 expressionNormal liverBile acidsPericentral regionsIndirect immunofluorescenceProtein 3Days postligationMRP3Mrp2 proteinLiverRole of sodium/hydrogen exchanger isoform NHE3 in fluid secretion and absorption in mouse and rat cholangiocytes
Mennone A, Biemesderfer D, Negoianu D, Yang C, Abbiati T, Schultheis P, Shull G, Aronson P, Boyer J. Role of sodium/hydrogen exchanger isoform NHE3 in fluid secretion and absorption in mouse and rat cholangiocytes. AJP Gastrointestinal And Liver Physiology 2001, 280: g247-g254. PMID: 11208547, DOI: 10.1152/ajpgi.2001.280.2.g247.Peer-Reviewed Original Research
2000
Molecular identification and functional characterization of Mdr1a in rat cholangiocytes
Gigliozzi A, Fraioli F, Sundaram P, Lee J, Mennone A, Alvaro D, Boyer J. Molecular identification and functional characterization of Mdr1a in rat cholangiocytes. Gastroenterology 2000, 119: 1113-1122. PMID: 11040198, DOI: 10.1053/gast.2000.18156.Peer-Reviewed Original ResearchMeSH KeywordsAcridinesAnimalsATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1ATP-Binding Cassette TransportersBile DuctsCell DivisionCell MembraneCytosolDrug Resistance, MultipleIn Vitro TechniquesIsoquinolinesKineticsMaleMicroscopy, ConfocalRatsRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionRhodamine 123RNA, MessengerTetrahydroisoquinolinesTranscription, GeneticVanadatesVerapamilConceptsCholangiocyte cell linePlasma membrane proteinsRat cholangiocyte cell lineCell linesCytosolic domainMembrane proteinsRhodamine 123Functional characterizationGene productsRNA transcriptsMolecular identificationMembrane subfractionsPair fragmentWestern blot analysisWestern analysisApical membraneFunctional assaysFunctional evidenceBlot analysisConfocal microscopyP-glycoprotein inhibitor verapamilRat cholangiocytesLipophilic xenobioticsReverse transcription-polymerase chain reactionDose-dependent mannerATP-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 evidenceHomologues
1999
Modulation of protein kinase C by taurolithocholic acid in isolated rat hepatocytes
Beuers U, Probst I, Soroka C, Boyer J, Kullak‐Ublick G, Paumgartner G. Modulation of protein kinase C by taurolithocholic acid in isolated rat hepatocytes. Hepatology 1999, 29: 477-482. PMID: 9918925, DOI: 10.1002/hep.510290227.Peer-Reviewed Original Research
1998
Cyclic AMP stimulates sorting of the canalicular organic anion transporter (Mrp2/cMoat) to the apical domain in hepatocyte couplets
Roelofsen H, Soroka C, Keppler D, Boyer J. Cyclic AMP stimulates sorting of the canalicular organic anion transporter (Mrp2/cMoat) to the apical domain in hepatocyte couplets. Journal Of Cell Science 1998, 111: 1137-1145. PMID: 9512509, DOI: 10.1242/jcs.111.8.1137.Peer-Reviewed Original ResearchConceptsTransport proteinsApical membraneApical domainTransporter-containing vesiclesMultidrug resistance protein 2Protein 2Cell-cell contactMicrotubule-dependent fashionBasolateral plasma membraneApical proteinsEffect of cAMPVesicle trafficAnion transportersSecretory polarityOrganic anion transportersPlasma membraneCanalicular membraneAnion transport capacityTransport activityApical excretionApical poleCanalicular organic anion transportMultispecific organic anion transporterAmphiphilic organic anionsTransport function
1996
Tauroursodeoxycholic 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 fractionHepatocytes
1992
Hepatic Transport Systems Regulating pHi, Cell Volume, and Bile Secretion
Boyer J, Graf J, Meier P. Hepatic Transport Systems Regulating pHi, Cell Volume, and Bile Secretion. Annual Review Of Physiology 1992, 54: 415-438. PMID: 1562181, DOI: 10.1146/annurev.ph.54.030192.002215.Peer-Reviewed Original ResearchAnion channels in rat liver canalicular plasma membranes reconstituted into planar lipid bilayers
Sellinger M, Weinman S, Henderson R, Zweifach A, Boyer J, Graf J. Anion channels in rat liver canalicular plasma membranes reconstituted into planar lipid bilayers. American Journal Of Physiology 1992, 262: g1027-g1032. PMID: 1377450, DOI: 10.1152/ajpgi.1992.262.6.g1027.Peer-Reviewed Original ResearchTaurine transport in skate hepatocytes. II. Volume activation, energy, and sulfhydryl dependence
Ballatori N, Boyer J. Taurine transport in skate hepatocytes. II. Volume activation, energy, and sulfhydryl dependence. American Journal Of Physiology 1992, 262: g451-g460. PMID: 1550235, DOI: 10.1152/ajpgi.1992.262.3.g451.Peer-Reviewed Original Research
1991
Mechanism of mercurial inhibition of sodium-coupled alanine uptake in liver plasma membrane vesicles from Raja erinacea
Sellinger M, Ballatori N, Boyer J. Mechanism of mercurial inhibition of sodium-coupled alanine uptake in liver plasma membrane vesicles from Raja erinacea. Toxicology And Applied Pharmacology 1991, 107: 369-376. PMID: 1994517, DOI: 10.1016/0041-008x(91)90216-2.Peer-Reviewed Original ResearchConceptsDependent alanine uptakePlasma membrane vesiclesMembrane vesiclesAlanine uptakePrimitive vertebratesPlasma membraneTransport proteinsConcentration-dependent mechanismLiver plasma membrane vesiclesMicroM HgCl2Mammalian hepatocytesAlanine carrierSulfhydryl groupsLittle skateMembrane integrityRaja erinaceaDirect interactionVesiclesVesicle integrityMembrane permeabilityMercurial inhibitionUptake rateDose-dependent mannerHgCl2 concentrationsLiver plasma membranes
1990
Modulation of Na+/alanine cotransport in liver sinusoidal membrane vesicles by internal divalent cations
Simmons T, Moseley R, Boyer J, Ballatori N. Modulation of Na+/alanine cotransport in liver sinusoidal membrane vesicles by internal divalent cations. Biochimica Et Biophysica Acta 1990, 1023: 462-468. PMID: 2110482, DOI: 10.1016/0005-2736(90)90140-j.Peer-Reviewed Original ResearchCryptic na+, k+‐atpase activity in rat liver canalicular plasma membranes: Evidence for its basolateral origin
Sellinger M, Barrett C, Malle P, Gordon E, Boyer J. Cryptic na+, k+‐atpase activity in rat liver canalicular plasma membranes: Evidence for its basolateral origin. Hepatology 1990, 11: 223-229. PMID: 2155168, DOI: 10.1002/hep.1840110211.Peer-Reviewed Original ResearchConceptsFree-flow electrophoresisMembrane-fluidizing agentSurface chargeBasolateral enzymeBasolateral marker enzymeSmall contaminantsRat liver canalicular plasma membranesSmall amountRoutine assayAnodeSucrose density centrifugationMembraneElectrophoresisCanalicular liver plasma membranesEnzymeMembrane preparationsContaminantsPreparationChargeCanalicular markerPrecipitationLiver plasma membranesFractionActivity[34] Preparation of basolateral (sinusoidal) and canalicular plasma membrane vesicles for the study of hepatic transport processes
Meier P, Boyer J. [34] Preparation of basolateral (sinusoidal) and canalicular plasma membrane vesicles for the study of hepatic transport processes. Methods In Enzymology 1990, 192: 534-545. PMID: 1963666, DOI: 10.1016/0076-6879(90)92092-r.Peer-Reviewed Original Research[33] Characterizing mechanisms of hepatic bile acid transport utilizing isolated membrane vesicles
Boyer J, Meier P. [33] Characterizing mechanisms of hepatic bile acid transport utilizing isolated membrane vesicles. Methods In Enzymology 1990, 192: 517-533. PMID: 2074806, DOI: 10.1016/0076-6879(90)92091-q.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 inhibitionAnion transport in basolateral (sinusoidal) liver plasma-membrane vesicles of the little skate (Raja erinacea)
Hugentobler G, Fricker G, Boyer J, Meier P. Anion transport in basolateral (sinusoidal) liver plasma-membrane vesicles of the little skate (Raja erinacea). Biochemical Journal 1987, 247: 589-595. PMID: 3426551, PMCID: PMC1148453, DOI: 10.1042/bj2470589.Peer-Reviewed Original ResearchMeSH Keywords4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic Acid4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAnimalsBiological TransportCarbonyl Cyanide m-Chlorophenyl HydrazoneCell MembraneCholic AcidCholic AcidsElectric FishHydrogen-Ion ConcentrationIn Vitro TechniquesLiverMaleProbenecidSkates, FishSulfatesConceptsPlasma membrane vesiclesBasolateral liver plasma membrane vesiclesSulfate uptakeLiver plasma membrane vesiclesProtonophore carbonyl cyanideSulfate transport systemVertebrate evolutionMammalian liver cellsPH-equilibrated conditionsTransmembrane transportPH gradientLittle skateRaja erinaceaUptake 5Carbonyl cyanideCI inhibitionAnion transport inhibitorAlkaline pH gradientVesiclesAnion transportSkate hepatocytesCertain organic anionsUptakeLiver cellsElasmobranchsCell membrane and transepithelial voltages and resistances in isolated rat hepatocyte couplets
Graf J, Henderson R, Krumpholz B, Boyer J. Cell membrane and transepithelial voltages and resistances in isolated rat hepatocyte couplets. The Journal Of Membrane Biology 1987, 95: 241-254. PMID: 3585979, DOI: 10.1007/bf01869486.Peer-Reviewed Original Research