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多環芳香族炭化水素類(PAH)-DNA付加体を指標とするPAH曝露評価法の開発

Research Project

Project/Area Number 17659036
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Environmental pharmacy
Research InstitutionKanazawa University

Principal Investigator

鳥羽 陽  金沢大学, 自然科学研究科, 講師 (50313680)

Co-Investigator(Kenkyū-buntansha) 早川 和一  金沢大学, 自然科学研究科, 教授 (40115267)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2005: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywords多環芳香族炭化水素 / バイオマーカー / DNA付加体 / ベンゾ[a]ピレン / LC-MS / MS / シトクロムP450
Research Abstract

多環芳香族炭化水素(PAH)のなかで特に強い発がん作用を有するBenzo[a]pyrene(BaP)に着目し、BaPが代謝活性化されて生成する発がん作用の本体であるBaP-DNA付加体を生体指標(バイオマーカー)として用いるために、BaP-DNA付加体の高速液体クロマトグラフ-タンデム質量分析計(LC-MS/MS)を用いた新しい高感度分析法の開発を試みた。DNA付加体関連物質としてdG-BPDE、及びdG-BPDEを加水分解して得られるBaP tetrolをBaP-DNA付加体の分析対象化合物としてLC-MS/MSの条件検討を行った。分子量関連イオンをプリカーサーイオンとしてdG-BPDEのMS/MSスペクトルを得たところ、グアニン残基が脱離したイオンが観察され、このイオンを効率よく生成させるように、移動相条件、電圧等を最適化した。これに順じてBaP tetrolのLC-MS/MS条件を最適化するとともに、蛍光検出HPLCによる分析法も確立した。確立した分析法を培養細胞にBaPを暴露して得られたDNAに適用したところ、発がん作用の本体として知られる代謝生成物のanti-BPDEに由来するBaP-DNA付加体をBaP tetrolとして検出することができた。細胞のBaP処理24時間後からBPDE-DNA付加体が観察され、処理時間に依存して付加体量の増加が見られた。続いてDNA付加体を利用したヒトの曝露評価を行うためのバイオマーカーの開発を行った。被験者への負担(侵襲性)の観点から尿中のBaP-DNA付加体関連物質をバイオマーカー候補として、DNA付加体を加水分解して得られる尿中tetrolの検出を試みたが、前処理法の回収率の低さなどの改善の余地が残った。

Report

(2 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (14 results)

All 2007 2006 2005

All Journal Article (14 results)

  • [Journal Article] Identification and quantification of 1-nitropyrene metabolites in human urine as a proposed biomarker for exposure to diesel exhaust.2007

    • Author(s)
      Akira Toriba
    • Journal Title

      Chemical Research in Toxicology (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Long-Range Transportation of Polycyclic Aromatic Hydrocarbons and Nitropolycyclic Aromatic Hydrocarbons from China to Japan2007

    • Author(s)
      Xiao-Yang Yang
    • Journal Title

      Atmospheric Environment 41 (13)

      Pages: 2710-2718

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Rapid and sensitive determination of tryptophan, serotonin and psychoactive tryptamines by thin-layer chromatography/fluorescence detection2007

    • Author(s)
      Noriyuki Kato
    • Journal Title

      Journal of Chromatography A 1145 (1-2)

      Pages: 229-233

    • Related Report
      2006 Annual Research Report
  • [Journal Article] An Environmental Quinoid Polycyclic Aromatic Hydrocarbon, Acenaphthenequinone, Modulates Cyclooxygenase-2 Expression through Reactive Oxygen Species Generation and Nuclear Factor Kappa B Activation in A549 Cells2007

    • Author(s)
      Sang Woon Chung
    • Journal Title

      Toxicological Sciences, pp. 348-355 95 (2)

      Pages: 348-355

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Particulate Polycyclic Aromatic Hydrocarbons and Their Nitrated Derivatives in Three Cities in Liaoning Province, China2007

    • Author(s)
      Tetsuyuki Hattori
    • Journal Title

      Environmental Forensics 8 (1-2)

      Pages: 165-172

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Simultaneous determination of urinary hydroxylated metabolites of naphthalene, fluorene, phenanthrene, fluoranthene and pyrene as multiple biomarkers of exposure to polycyclic aromatic hydrocarbons2006

    • Author(s)
      Thaneeya Chetiyanukornkul
    • Journal Title

      Analytical and Bioanalytical Chemistry 386 (3)

      Pages: 712-718

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Homologue and isomer distribution of dioxins observed in water samples collected from Kahokugata Lagoon and inflowing rivers, Japan2006

    • Author(s)
      Hitoshi Kakimoto
    • Journal Title

      Water Research 40 (10)

      Pages: 1929-1940

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Damage to and recovery of coastlines polluted with C-heavy oil spilled from the Nakhodka2006

    • Author(s)
      Kazuichi Hayakawa
    • Journal Title

      Water Research 40 (5)

      Pages: 981-989

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Determination of 1-nitropyrene metabolites by high-performance liquid chromatography with chemiluminescence detection2006

    • Author(s)
      Kazuichi Hayakawa
    • Journal Title

      Journal of Chromatography A 1107 (1-2)

      Pages: 286-289

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Determination of 1-nitropyrene metabolites by high performance liquid chromatography with chemiluminescence detection.2006

    • Author(s)
      Kazuichi Hayakawa
    • Journal Title

      Journal of Chromatography A 1107

      Pages: 286-289

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Damage and recovery of coastlines polluted with C-heavy oil from Nakhodka.2006

    • Author(s)
      Kazuichi Hayakawa
    • Journal Title

      Water Research 40

      Pages: 981-989

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Polycyclic aromatic hydrocarbons and nitropolycyclic aromatic hydrocarbons in urban air particulates and their relationship to emission sources in the Pan-Japan Sea countries.2005

    • Author(s)
      Tang Ning
    • Journal Title

      Atmospheric Environment 39

      Pages: 5817-5826

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Evaluation of Estrogenic Activities of Hydroxylated Polycyclic Aromatic Hydrocarbons in Cigarette Smoke Condensate.2005

    • Author(s)
      Makiko Kamiya
    • Journal Title

      Food and Chemical Toxicology 43

      Pages: 1017-1027

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Direct-Acting Mutagenicity of Extracts of Coal Burning-Derived Particulates and Contribution of Nitropolycyclic Aromatic Hydrocarbons.2005

    • Author(s)
      Rina Taga
    • Journal Title

      Mutation Research 581

      Pages: 91-95

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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