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DEVELOPMENT OF THE MODEL SYSTEM FOR DRUG METABOLISM STUDIES

Research Project

Project/Area Number 08457618
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 医薬分子機能学
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

GOTO Junichi  TOHOKU UNIVERSITY FACULTY OF PHARMACEUTICAL SCIENCES PROFESSOR, 薬学部, 教授 (80006337)

Co-Investigator(Kenkyū-buntansha) IKEGAWA Shigeo  TOHOKU UNIVERSITY FACULTY OF PHARMACEUTICAL SCIENCES ASSOCIATE PROFESSOR, 薬学部, 助教授 (90111301)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1997: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsLC / MS / Bile Acid / Immobilized enzyme / Glucuronyltransferase / Derivatization / Ester glucuronide / グルクロニルトランスフェラーゼ / 光学異性薬物 / エレクロスプレーイオン化 / 高速液体クロマトグラフィー
Research Abstract

Upon the phase of a drug discovery and development, construction of a model system reflecting the invivo metabolism for pre-clinical drug metabolism studies is desired. Moreover, a highly reliable method for the analysis of trace compounds in biological fluids is urgently needed. Therefore, we have been carried out on a comprehensive investigation by the technique of liquid chromatography-mass spectrometry (MS) and an immobilzed drug metabolizing enzyme.
1) A quantitative analytical method based on negative ion electrospray ionization (ESI) -MS for bile acid 3-glucuronides has been developed. Maximum sensitivity (200 fmol) could be achieved by recording the negative ion and mass spectra obtained were characterized by an intense-molecular ion [M-H]^- with a doubly charged ion [M-2H]^<2->, and the ratio of these negative ions were markedly influenced by the acidic component of salt added to a moble phase, acccording to a pKa value of an acidic moiety at C-24. Application of this technique … More demonstrate its usefullness, principally in the diagnosis of liver disease. The method has also applied to characterization of bile acid 24-glucuronides in incubation mixture with rat liver glucuronyltransferase.
2) For Obtaining sensitivity and specificity in ESI-MS for measuring the neutral and nonpolar substances that cannot be easily ionized in solution, reversed derivatization into ESI active substance by emloying immobilized recombinant sulfotransferase under physiological conditions has been studied The derivatization using dehydroepiandrosterone as a model compound was achieved quantitatively by incubation with the immobilized enzyme in the prsence of adenosine 3'-phosphate 5'-phosophosulfet at 37 ゚C for 60 min. The spectrum of the sulfate exhibited a quasimolecular ion [M-H]^- as an inrence peak under the negative ion ESI-MS mode.
3) To creat a model system that are being used for the interpretation of prediction of drug metabolism and disposition, rat liver microsomal fractions containing cytoihrome P-450 enzymes have been noncovalently immobilized on an immobilized artificial membrane, and the enzyme activity was investigated by following the in vitro hydroxylation of estradiol. The method was found to be useful in phase I metabolic profiling and mechanistic studies of drugs. Less

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] Shigeo Ikegawa: "Enantioselective immunoaffinity extraction for simultaneous determination of optically active bufuralol and its metabolites." J.Pharm.Biomed.Anal.(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shigeo Ikegawa: "Stereoisomeric bio-inversion of(25R)- and(25S)-3α,7α,12α-trihydroxy-5β-cholestanonic acid CoA thioesters in rat liver perosisome." Enantiomer. (in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shigeo Ikegawa: "Separatory determination of diastereomeric ibuprofen glucuronides in human urine by liquid chromatography/electrospray ionization-mass spectrometry." Biomed.Chromatogr.(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Norihiro Kobayashi: "Production and characterization of group-specific monoclonal antibodies recognizing non amidated glycine-and taurine-amidated ursodeoxycholic acid 7-N-acetyl glucosaminides." J.Steroid Biochem.Molec.Biol.(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Junichi Goto: "Separation and characterization of carboxyl-linked glucuronides of bile acids in incubation mixture of rat livermicrosomes." Steroids. (in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Junichi Goto: "Synthesis of bile acid 24-acyl glucuronides." Steroids. (in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 後藤 順一: "薬学雑誌" 日本薬学会, 9 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 池川 繁男: "質量分析" 日本質量分析学会, 印刷中 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shigeo Ikegawa, Manabu Itoh, Naoaki Murao, Hiromi Kijima, Mio Suzuki, Tomoharu Fujiyama, Junichi Goto and Masahiko Tohma: "immunoaffinity extraction for liquid chromatographic determination of equilin and its metabolites in plasma." Biomed.Chromatogr.10. 73-77 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Toshifumi Niwa, Kazuhiro Fujita, Toko Kasuya, Shigeo Ikegawa and Junichi Goto: "Enzyme immunoassay for ursodeoxycholic acid 7-N-acetyl-glucosaminides in human urine." Anal.Sci.12. 565-568 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Junichi Goto, Hiroya Miura, Masayuki Ando, Yasuhiro Yamato, Shigeo Ikegawa, Toshio Nambara and Isao Makino: "A novel enzyme system for the reduction of 3-oxo bile acids in human red blood cells." Steroids. 61. 416-420 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shigeo Ikegawa, Naoaki Murao, Takashi Motoyama, Takamitsu Yanagihara, Toshifumi Niwa and Junichi Goto: "Separation and detection of bile acid 3-glucuronides in h umanurine by liquid chromatography/electrospray ionization-massspectrometry." Biom ed.Chromatogr.10. 313-317 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shigeo Ikegawa, Takamitsu Yanagihar, Naoaki Murao, Hiroo Watanabe and Junichi Goto: "Separatory determination of bile acid 3-sulfates by liquid chromatography/electrospray ionization-mass spectrometry." J.Mass Spectrometry. 32. 401-407 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Toshiaki Momose, Jun Maruyama, Takashi Iida, Junichi Goto and Toshio Nambara: "Comparative abilities and optical conditions for beta-glycosidase enzymes to hydrolyse the glucuronide, glucoside, and N-acetylglucosaminide conjugates of bile acids." Biol.Pharm.Bull.20. 828-833 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] shigeo Ikegawa, Kenji Matsuura, Takehiro Sato, Ni Made Ria Isriyanti, Toshifumi Niwa, Shinichi Miyairi, Hideo Takashina, Youichi Kawashima and Junichi Goto: "Enantioselective immunoaffinity extraction for simultaneous determination of optically active bufuralol and its metabolites in human plasma by HPLC." J.Pharm.Biomed.Anal.in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shigeo Ikegaw, Takaaki Goto, Hiroo Watanabe and Junichi Goto: "Stereoisomeric bio-in version of (25)R-and (25S) -3alpha, 7alpha, 12alpha-trihydroxy-5beta-cholestanonicacid CoA thioesters in rat liver peroxisome." Enantiomer. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Sigeo Ikegawa: "Enantioselective immunoaffinity extraction for simultaneous determination of optically active bufuralol and its metabolites." J.Pharm.Biomed.anal.(in Press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sigeo Ikegawa: "Stereoisomeric bio-inversion of(25R)-and(25S)-3α,7α,12α-trihydroxy-5β-cholestanonic acid CoA thioesters in rat liver perosisme." Enantiomer. (in Press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sigeo Ikegawa: "Separatory determination of diastereomeric ibuprofen qlucuronides in human urine by liquid chromatography/electrospray ionization mass spectrometry." Biomed.Chromatogr.(in Press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Norihiro Kobayashi: "Production and characterization of group-specific monoclonal antibodies recognizing non amidated glycine-and taurine-amidated ursodeoxycholic acid 7-N-acetyl glucosaminides." J.Steroid Biochem.Molec.Biol.(in Press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Junichi Goto: "Separation and characterization of carboxyl-linked glucuronides of bile acids in incubation mixture of rat liver microsomes." Steroids. (in Press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Junidhi Goto: "Synthesis of bile acid 24-acyl glucuronides." Steroids. (in Press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 後藤順一: "薬学雑誌" 日本薬学会, 9 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 池川繁男: "質量分析" 日本質量分析学会(印刷中), (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Shigeo Ikegawa: "Immunoaffinity. extraction for liquid chromatographic determination of equilin and its metabolites in plasma." Biomed. Chromatogr.10・2. 73-77 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Toshifumi Niwa: "Enzymeimmunoassay for ursodeoxycholic acid 7-N-acetylglucosaminides in humanurine." Anal. Sci.12・4. 565-568 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Junichi Goto: "Anovelenzyme system for the reduction of 3-oxobile acids in humanredblood cells." Steroids. 61・7. 416-420 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Emako Suzuki: "Preparation of specific antiserum to 17α-estradiol 17-N-acetylglucosaminaide." Biol. Pharm. Bull.19・1. 1396-1400 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shigeo Ikegawa: "Separation and detection of bileacid 3-glucuronides in humanurine by liquid chromatography/electrospray ionization-mass spectrometry" Biomed. Chromatogr.10・6. 313-317 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shigeo Ikegawa: "Separatory determination of bileacid 3-sulfates by liquid chromatography/electrospray ionization-mass spectrometry" J. Mass Spectrometry. (in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] 池川繁男: "高感度化技術体系「第I巻分析技術」" フジ・テクノシステム, 1145 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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