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1998 Fiscal Year Final Research Report Summary

Analysis of multiplicity and polymorphism of drug transporters expressed in the liver.

Research Project

Project/Area Number 09470501
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biological pharmacy
Research InstitutionThe University of Tokyo

Principal Investigator

SUGIYAMA Yuichi  Graduate School of Pharm.Sci., The Univ.of Tokyo Professor, 大学院・薬学系研究科, 教授 (80090471)

Co-Investigator(Kenkyū-buntansha) KUME Kazuhiko  Graduate School of Medicine, The Univ.of Tokyo Research Associate, 医学部, 助手 (30251218)
ITO Kiyomi  Faculty of Pharmaceutical Sciences, Kitasato University Assistant Professor, 薬学部, 講師 (60232435)
KATO Yukio  Graduate School of Pharm.Sci., The Univ.of Tokyo, Research Associate, 大学院・薬学系研究科, 助手 (30251440)
SUZUKI Hiroshi  Graduate School of Pharm.Sci., The Univ.of Tokyo Assistant Professor, 大学院・薬学系研究科, 助教授 (80206523)
Project Period (FY) 1997 – 1998
Keywordsbiliary excretion / MRP / cMOAT / Ntcp / oatp / ABC transpoter / organic anions / induction
Research Abstract

Liver, along with kidney, plays an important role in the detoxification of xenobiotics. It is well established that drugs in the circulating blood are taken up into the liver via transporters on the basal membrane, and then excreted into the bile via transporters on the bile canalicular membrane. Concerning the transporters responsible for the uptake, Na^+-dependent bile acid transporter (Ntcp) and organic anion transporter 1 (oatp1) have been identified. However, no quantitative studies have been performed on the contribution of these transporters to the hepatic uptake of drugs. In the present study, we determined the contribution of each transporter in hepatic drug uptake, by comparing the ability to take up drugs into hepatocytes and into cDNA-transfected mammalian cells. The results suggested the presence of multiplicity for both Na^+-dependent and independent transport systems. Studies are under way to determine the contribution of homologous transporters (such as oatp2 and oat 3) … More . Concerning the transport across the bile canalicular membrane, the transport properties of organic anions has been identified by using the isolated bile canalicular membrane vesicles isolated from rats and humans. In addition, we have characterized the transport properties of canalicular multispecific organic anion transporter (cMOAT) using the membrane vesicles isolated from cDNA-transfected cells. Moreover, as a homologue of cMOAT, we have cloned rat and human MRP3 (multidrug resistance associated protein 3). Studies with isolated membrane vesicles from mammalian cells transfected with MRP3 cDNA, it was demonstrated that MRP3 accepts glucuronides, but not glutathione-conjugates, as good substrates. Thus, the difference in the transport characteristics was demonstrated between MRP1/2 and 3. In rats and HepG2 cells in culture, MRP3 was induced by phenobarbital, suggesting that the difference in the expression level of MRP3 may result in the interindividual difference in the ability to excrete xenobiotics and/or their conjugates into the bile in humans. Less

  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] X.Y.Chu: "Multiplicity of biliary excretion mechanisms for irinotecan,CPT-11,and its metabolites in rats." Cancer Research. 57・10. 1934-1938 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Ishizuka: "Temocaprilat,a Novel Angiotensin-Converting Enzyme lnhibitor,is Excreted in Bile via and ATP-dependent Active Transporter(cMOAT)That is Deficient in Eisai Hyperbilirubinemic Mutant Rats(EHBR)" Journal of Pharmacology and Experimental Therapeutics. 280・3. 1304-1311 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Sasabe: "Carrier-mediated hepatic uptake of quinolone antibiotics in the rat" Journal of Pharmacology and Experimental Therapeutics. 282・1. 162-171 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Masuda: "Methotrexate is excreated into the bile by canalicular multispecific organic anion transporter in rats" Cancer Research. 57・16. 3506-3510 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Nlinuma: "Kinetlc analysis of the primary active transport of conjugated metabolltes across the blle canallcular membrane: comparative study of S-(2,4-dinltrophenyl)-glutathione and 6-hydroxy-5,7-dimethyl-2-methylamino-4-(3-pyridyimethy1)benzothiazole glucuronide" Journal of Pharmacology and Experimental Therapeutics. 282・2. 866-872 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Yamazaki: "Biliary excretion of pravastatin in rats : contribution of the excretion pathway mediated by canalicular multispecific organic anion transporter(cMOAT)" Drug Metabolismsm and Disposition. 25・10. 1123-11129 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Yamada: "Carrier-mediated hepatic uptake of the cationic cyclopeptide octreotide, in rats" Drug Metabolismsm and Disposition. 25・5. 536-543 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ito: "Functional analysis of a canalicular multispecific organic anion transporter cloned from rat liver" Journal of Biological Chemistry. 273・3. 1684-1688 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木洋史: "胆汁排泄のトランスポーター" 生化学. 69・9. 1098-1101 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kusuhara: "The role of P-glycoprotein and canalicular multispecific organic anion transporter(cMOAT)in the hepatobiliary excretion of of drugs." J.Pharm.Sci.87. 1025-1040 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Suzuki: "Excretion of GSSG and glutathione conjugates mediated by MRP1 and cMOAT/MRP2." Semin.Liv.Dis.18. 359-376 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hirohashi: "Hepatic expression of multidrug resistance-associated protein(MRP)-like proteins maintained in Eisai hyperbilirubinemic rats(EHBR)." Mol.Pharmacol.53. 1068-1075 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kiuchi: "cDNA cloning and inducible expression of human multidrug resistance associated protein 3(MRP3)." FEBS Letters. 433. 149-152 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kouzuki: "Contribution of sodium taurocholate co-transporting polypeptide to the uptake of its possible substrates into rat hepatocytes." J.Pharmacol.Exp.Ther.286. 1043-1050 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kouzuki: "Contribution of organic anion transporting polypeptide to the uptake of ligands into rat hepatocytes." J.Pharmacol.Exp.Ther.(in press).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木洋史: "肝臓病学の最前線" (中外医学社)中山、滝川編, (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Suzuki: "Transporters for bile acids and organic anions. In “Membrane transporters as drug targets" edited by G.Amidon and W.Sadee" Plenum Publishing Corp.,New York.,

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] X.Y.Chu et al.: "Multiplicity of biliary excretion mechanisms for irinotecan, CPT-11, and its metabolites in rats." Cancer Res.57. 1934-1938 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Ishizuka et al.: "Temocapril, a novel angiotensin converting enzyme inhibitor, is excreted into bile via an ATP-dependent active transporter (cMOAT) that is deficient in Eisai hyperbilirubinemic mutant rats (EHBR)" J.Pharmacol.Exp.Ther.280. 1304-1311 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Sasabe et al.: "Carrier-mediated hepatic uptake of quinolone antibiotics in the rat." J.Pharmacol.Exp.Therap.282. 162-171 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Masuda et al.: "Methotrexate is excreated into the bile by canalicular multispecific organic anion transporter in rats." Cancer Research. 57. 3506-3510 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Niinuma et al.: "Kinetic analysis of the primary active transport of conjugated metabolites across the bile canalicular membrane : comparative study of S- (2,4-dinitrophenyl) -glutathione and 6-hydroxy -5,7-dimethyl-2-methylamino-4- (3-pyridylmethyl) benzothiazole glucuronide." J.Pharmacol.Exp.Therap.282. 866-872 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Yamazaki et al.: "Biliary excretion of pravastatin in rats : contribution of the excretion pathway mediated by canalicular multispecific organic anion transporter (cMOAT) ." Drug Metabol.and Disposit.25. 1123-11129 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Yamada et al.: "Carrier-mediated hepatic uptake of the cationic cyclopeptide, octreotide, in rats." Drug Metabol.and Disposit. 25. 536-543 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ito et al.: "Molecular cloning of canalicular multispecific organic anion transporter defective in Eisai hyperbilirubinemic rats." Am.J.Physiol.272. G16-G22 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kusuhara et al.: "The role of P-glycoprotein and canalicular multispecific organic anion transporter (cMOAT) in the hepatobiliary excretion of drugs." J.Pharm.Sci.87. 1025-1040 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Suzuki et al.: "Excretion of GSSG and glutathione conjugates mediated by MRP1 and cMOAT/MRP2." Semin.Liver.Dis.18. 359-376 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Hirohashi et al.: "Hepatic expression of multidrug resistance-associated protein-like proteins maintained in Eisai hyperbilirubinemic rats." Mol.Pharmacol.53. 1068-1075 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kiuchi et al.: "cDNA cloning and inducible expression of human multidrug resistance associated protein 3" FEBS Letters. 433. 149-152 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kouzuki et al.: "Contribution of sodium taurocholate co-transporting polypeptide to the uptake of its possible substrates into rat hepatocytes." J.Pharmacol.Exp.Ther.286. 1043-1050 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kouzuki et al.: "Contribution of organic anion transporting polypeptide to the uptake of ligands into rat hepatocytes." J.Pharmacol.Exp.Ther.(in press).

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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