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2012 Fiscal Year Final Research Report

Development of the novel compound which specifically scavenges singlet oxygen extra- and intracellularly.

Research Project

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Project/Area Number 23659740
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Anesthesiology/Resuscitation studies
Research InstitutionKyoto University

Principal Investigator

ARAI Toshiyuki  京都大学, 医学研究科, 准教授 (80175950)

Co-Investigator(Kenkyū-buntansha) YAMASHITA Kouhei  京都大学, 医学研究科, 講師 (80402858)
Co-Investigator(Renkei-kenkyūsha) ENDO Nobuyuki  若狭湾エネルギー研究センター, 研究開発部, 主査研究員 (30359244)
Project Period (FY) 2011 – 2012
Keywords一重項酸素 / 特異的消去剤 / 神経細胞 / 皮膚細胞 / 細胞死 / 放射線障害
Research Abstract

Dimethyl-hydropterin (DPH) was newly synthesized through the reaction with pterin and edaravone. The direct analysis of near-infrared luminescence using Raman spectroscopy proved that DPH quenched the photochemically generated singlet oxygen in a cell-free system. Further, the chemiluminescence assay revealed that DPH scavenged not only singlet oxygen but also superoxide generated in activated neutrophils. When singlet oxygen was generated photochemically in neuronal cells, cell death was induced. DPH prevented the singlet oxygen-induced cell death. And, when keratinocytes was weakly exposed to the ionized radiation, cell death was not observed but the DNA damage was observed. DPH attenuated the DNA damage, probably due to scavenging singlet oxygen.

  • Research Products

    (7 results)

All 2012 2011

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (6 results)

  • [Journal Article] Singlet oxygen is essential for neutrophil extracellular trap formation.2011

    • Author(s)
      Nishinaka Y, Arai T, Adachi S, Takaori-Kondo A, Yamashita K
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 413 Pages: 75-79

    • DOI

      doi:10.1016/j.bbrc.2011.08.052

    • Peer Reviewed
  • [Presentation] A novel role of uric acid in neutrophils extracellular trap formation2012

    • Author(s)
      Yoko Nishinaka, Toshiyuki Arai, Makiko Morita, Yasuyuki Arai, Kiyomi Mizugishi, Souichi Adachi, Akifumi Takaori-Kondo, Kouhei Yamashita
    • Organizer
      第74回日本血液学会総会
    • Place of Presentation
      京都(京都国際会議場)
    • Year and Date
      20121019-21
  • [Presentation] 高濃度尿酸によるNADPH oxidase 非依存性 NETosis の誘導2012

    • Author(s)
      西中瑶子、森田真紀子、山下浩平、荒井俊之、足立壮一
    • Organizer
      第21回日本Cell Death学会
    • Place of Presentation
      名古屋(名古屋大学)
    • Year and Date
      20120727-28
  • [Presentation] Singlet oxygen is essential for neutrophil extracellular trap formation2011

    • Author(s)
      Kouhei Yamashita, Yoko Nishinaka, Toshiyuki Arai, Souichi Adachi, Akifumi Takaori-Kondo
    • Organizer
      第73回日本血液学会総会
    • Place of Presentation
      名古屋(名古屋国際会議場)
    • Year and Date
      20111014-16
  • [Presentation] Singlet oxygen is essential for neutrophil extracellular trap formation2011

    • Author(s)
      Yoko Nishinaka, Makiko Morita, Toshiyuki Arai, Souichi Adachi, Akifumi Takaori-Kondo, Kouhei Yamashita
    • Organizer
      第53回米国血液学会
    • Place of Presentation
      San Diego (San Diego Convention Center, CA, USA)
    • Year and Date
      2011-12-12
  • [Presentation] NETosisにおける一重項酸素の役割2011

    • Author(s)
      西中瑶子、森田真紀子、山下浩平、荒井俊之、足立壮一
    • Organizer
      第20回日本Cell Death学会
    • Place of Presentation
      東京(東京大学)
    • Year and Date
      2011-07-30
  • [Presentation] 細胞内で発生させた一重項酸素による細胞死に対する脳梗塞治療薬エダラボンの効果について2011

    • Author(s)
      森浩子、西中瑶子、荒井俊之
    • Organizer
      第58回日本麻酔科学会
    • Place of Presentation
      神戸(神戸ポートピアホテル)
    • Year and Date
      2011-05-19

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Published: 2014-08-29   Modified: 2014-10-07  

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