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Analysis of bio-molecule damaged by radiation and its application to model of radiation effects

Research Project

Project/Area Number 18K07631
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionNagoya University

Principal Investigator

Hirano Yoshiyuki  名古屋大学, 医学系研究科(保健), 准教授 (00423129)

Co-Investigator(Kenkyū-buntansha) 余語 克紀  名古屋大学, 医学系研究科(保健), 助教 (30424823)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywordsラマン分光 / DNA損傷 / 紫外線損傷 / ガンマ線損傷 / 放射線治療 / DNAの損傷 / DNAの放射線損傷 / 放射線シミュレーション / 生物効果モデル / 分析化学 / 医学物理
Outline of Final Research Achievements

The purpose of this study was to identify radiation damage to DNA by using of Raman spectroscopy, and the results were used for a biological effect model. Unfortunately, I did not apply to the model. But I eventually established a stable measurement of DNA damage by Raman spectroscopy by developing a liquid cell and analysis methods after several tries and errors. Using this method, DNA damage by equivalent doses of ultraviolet rays (UVB and UVC) and gamma-rays (Co-60) was observed. For example, ring modes of adenine and cytosine were observed for UV irradiation but not observed for gamma-ray irradiation. In the future, I will identify structures of DNA damage using quantum chemistry calculation to reproduce the experimental results.

Academic Significance and Societal Importance of the Research Achievements

放射線影響のメカニズムを明らかにすることは、放射線被ばくや放射線治療の効果予測において非常に重要である。放射線影響は生体分子と放射線との相互作用である物理化学過程からはじまり、細胞、組織臓器、個体レベルへと伝搬する。本研究は初期段階である放射線によってDNAがどのように損傷するかを調べることを目的にしている。損傷構造によっては、修復酵素の認識やDNA複製に影響を与えると考えられる。そのためには、まずどのような損傷構造になるかを知ることは極めて重要であり、本研究はラマン分光を用いて放射線の種類による損傷の違いを示すことができ、放射線影響のメカニズム解明の一助になったと考える。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2022 2019

All Presentation (2 results)

  • [Presentation] Analysis of DNA damage by UVC and gamma rays using Raman spectroscopy2022

    • Author(s)
      伊藤成美、平野祥之
    • Organizer
      放射線影響学会65回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Angular dependency of visible light imaging of water by radiations using a photon propagation simulation2019

    • Author(s)
      平野祥之
    • Organizer
      The 117th Scientific Meeting of the Japan Society of Medical Physics
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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