• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Novel Molecular Probes of Endogenous Nitric Oxide Detection and Imaging

Research Project

Project/Area Number 12450339
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 工業分析化学
Research InstitutionKyushu University

Principal Investigator

KATAYAMA Yoshiki  Kyushu University, Faculty of Engineering, Associate Professor, 工学研究院, 助教授 (70284528)

Co-Investigator(Kenkyū-buntansha) MURATA Masaharu  Kyushu University, Faculty of Engineering, Assistant Professor, 工学研究院, 助手 (30304744)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 2001: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsNitric oxide / NO / Molecular probe / Fluorescent probe / ESR / Spin trapper / スピントラップ剤 / スピントラツプ剤 / 蛍光分析 / 細胞情報伝達 / イメージング / 生体分析
Research Abstract

Firstly, various types of dithiocarbamate-iron(II) were synthesized and those sensitivities of NO detection were examined. These experiments proposed the structure-sensitivity relationship of dithiocarbamate-iron(II) type complexes in NO detection. Then, a novel concept of NO-detection, radical-exchange, was found using the dithiocarbamate-iron(II) complex and TEMPOL, which is a stable organic radical. In this system, NO bound to the centered iron in the complex to release the TEMPOL, which is a stable organic radical. In this system, NO bound to the centered iron in the complex to release the TEMPOL radical, which can be detected with high-sensitivity. This molecular system could detect NO with 25 times higher sensitivity than that in ordinary dithiocarbamate-iron(II)-type NO-spin traps. As a next stage, we applied this new strategy to make a fluorescent probe of NO. Thus, a dithiocarbamate-iron(II) complex and acridine-labeled TEMPO were used to construct new type of NO-fluorescent probe. This probe could monitor the NO production from a spontaneous NO-releasing agent using the fluorescence decrease of acridine due to the release of the acridine-TEMPO by NO. Finaly, we designed and synthesized a dual fluorescent-labeled probe system using iron (II) complex of a coumaline-labeled cyclam and a fluorescamine-labeled TEMPO. This probe gave the fluorescence based on the fluorescamine when the coumaline was excited due to the fluorescence energy transfer. In this system, NO bound to the iron(II) to release the fluorescamine-TEMPO. The fluorescence in the released fluorescamine-TEMPO was quenched by the newly produced TEMPO radical. This cancelled the fluorescence energy transfer to increase the fluorescence intensity of the coumaline. Thus the probe can monitor the NO production independent on the background fluorescence in biological samples using ratiometry. After all, we have established the basic concept to design a highly sensitive NO probe successfully.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Yoshiki Katayama et al.: "A New Strategy of the Design of Molecular Probes for Investigating Endogenous Nitric Oxide Using an EPR or Fluorescent Technique"Chem. Phys. Chem. 2. 101-107 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nobuaki Soh et al.: "A Fluorescent Probe for Monitoring Niric Oxide Production Using A Novel Detection Concept"Analyst. 126. 564-566 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayama et al.: "Strategies and Development of Molecular Probes for Nitric Oxide Monitoring"Bull. Chem. Soc. Jpn. (In press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayama et al.: "A Novel Molecular System for Nitric Oxide Detection with High Sensitivity"Chem. Lett.. 1152-1153 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 片山 佳樹: "NOラジカルの測定"ぶんせき. No.5. 252-258 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayama, Nobukai Soh, Mizuo Maeda: "A New Strategy of the Design of Molecular Probes for Investigating Endogenous Nitric Oxide Using an EPR or Fluorescent Technique"Chem Phys Chem. Vol. 2. 101-107 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nobuaki Soh, Yoshiki Katayama, Mizuo Maeda: "A Fluorescent Probe tor Monitoring Niric Oxide Production Using A Novel Detection Concept"Analyst. Vol. 126. 564-566 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayama, Nobuaki Soh, Mizuo Maeda: "Strategies and Development of Molecular Probes for Nitric Oxide Monitoring"Bull. Chem. Soc. Jpn. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayama, Kazuhiro Koide, Nobuaki Soh, Mizuo Maeda: "A Novel Molecular System for Nitric Oxide Detection with High Sensitivity"Chem. Lett.. 1152-1153 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayama: "Monitoring of NO radical"Bunseki. No. 5. 252-258 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshiki Katayarna et al.: "A New Strategy of the Design of Molecular Probes for Investigating Endogenous Nitric Oxide Using an EPR or Fluorescent Technique"Chem.Phys.Chem. 2. 101-107 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nobuaki Soh et al.: "A Fluorescent Probe for Monitoring Niric Oxide Production Using A Novel Detection Concert"Analyst. 126. 564-566 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yoshiki Katayama et al.: "Strategies and Development of Molecular Probes for Nitric Oxide Monitoring"Bull.Chem.Soc.Jpn. (in press). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yoshiki Katayama et.al.: "A Novel Molecular System for Nitric Oxide Detection with High Sensitivity."Chemistry Letters. No.10. 1152-1153 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yoshiki Katayama et.al.: "New Strategy for the Design of Molecular Probes for Investigating Endogenous Nitric Oxide Using an EPR or Fluorescent Technique."Eur.J.Chem.Phys.and Phys.Chem.. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] Yoshiki Katayama et.al.: "NOラジカルの測定"ぶんせき. No.5. 252-256 (2000)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 2000-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi