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Development of exposure dose evaluation method by DNA damage analysis corresponding to radiation exposure accident

Research Project

Project/Area Number 18H01919
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionOsaka University

Principal Investigator

Shimizu Kikuo  大阪大学, 放射線科学基盤機構附属ラジオアイソトープ総合センター, 准教授 (20162696)

Co-Investigator(Kenkyū-buntansha) 佐藤 文信  大阪大学, 工学研究科, 教授 (40332746)
松尾 陽一郎  福井大学, 学術研究院工学系部門, 准教授 (90568883)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords線量評価 / qPCR / デジタルPCR / DNA損傷 / 緊急被ばく / DNA損傷評価 / 被ばく線量評価 / バイオアッセイ / qPCR法 / PCR法 / 被ばく線量 / DNA線量計 / 緊急時被ばく線量評価 / バイオドシメトリー
Outline of Final Research Achievements

Two pairs of primers were used instead of the conventional pair of primers when evaluating DNA damage. The detection sensitivity was increased.
Next, the evaluation method of living cells was examined. After irradiating whole bovine blood with gamma rays, DNA was separated and purified, and the dose was evaluated by real-time PCR. It was shown that DNA collected from blood also had damage that inhibits PCR, and that this method can be applied to cases where blood was collected from exposed persons.Furthermore, the reduction of error by applying the digital PCR method was examined. In principle, the digital PCR method can detect the difference in DNA of one molecule and enable highly accurate analysis. From the obtained results, it was shown that the error was reduced as compared with the conventional real-time PCR method.

Academic Significance and Societal Importance of the Research Achievements

本研究ではPCR法に注目し、DNA鎖切断量を指標とした吸収線量の新規評価法を開発し実用化を目指した。本研究期間で、評価精度及び感度の向上が達成できた。また、緊急被ばく時に被ばくされた方から血液採取を行い、血液中のDNAの解析による被ばく線量を評価することが可能であることも示した。
生体試料を対象として被ばくした放射線量を評価するためには、迅速に、大量のサンプルを処理可能であること、熟練した技術を必要としない手法であることが求められる。本研究で得られた結果はこれらの課題を解決するために重要である。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (11 results)

All 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Molecular Analysis of Carbon Ion Induced Mutations in DNA repair deficient strains of Saccharomyces cerevisiae2019

    • Author(s)
      Y. Matuo, Y Izumi, A. N. Sakamoto, Y. Hase, K. Satoh, K. Shimizu
    • Journal Title

      Quantum beam Sci

      Volume: 3

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 放射線照射によるDNA損傷の新評価手法の検討2018

    • Author(s)
      松尾 陽一郎、平山 誠、川井 良太、砂川 武義、清水 喜久雄、泉 佳伸
    • Journal Title

      放射線生物研究

      Volume: 53 Pages: 223-240

    • NAID

      120007146165

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 炭素およびネオン粒子線照射による出芽酵母の突然変異誘発の解析2020

    • Author(s)
      松尾陽一郎、泉佳伸、下川卓志、清水喜久雄
    • Organizer
      日本放射線影響学会第63回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 放射線照射による出芽酵母の突然変異誘発に関する研究2020

    • Author(s)
      丹羽啓太, 松尾陽一郎, 清水喜久雄, 泉佳伸
    • Organizer
      日本放射線安全管理学会 第19回学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ポリメラーゼ連鎖反応 (PCR)を用いた放射線によるDNA損傷評価手法の開発2020

    • Author(s)
      山口雅, 松尾陽一郎,清水喜久雄,泉佳伸
    • Organizer
      日本放射線安全管理学会 第19回学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] DNA 損傷を指標とした 放射線量評価法の開発2020

    • Author(s)
      清水喜久雄、松尾陽一郎、山口雅、泉佳伸、秋山庸子、駮丸佳輝、玉置真悟、佐藤文信
    • Organizer
      日本保健物理学会  第53回研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Quantification of DNA damages by Real-time PCR Reaction and Its Application to Radiation Monitoring System2019

    • Author(s)
      K. Shimizu, T. Matuo, Y. Izumi, N. Sato, T. Yamamoto
    • Organizer
      3rd International Conference on Dosimetry and its Applications Lisbon, Portugal
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular analysis of carbon ion beam induced mutations in the budding yeast S. cerevisiae.2019

    • Author(s)
      Y. Matuo, Y. Izumi, T. Shimokawa, K. Shimizu
    • Organizer
      ICRR2019, Manchester, England
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] リアルタイムPCRを用いた放射線によるDNA損傷の評価に関する検討2019

    • Author(s)
      清水喜久雄、松尾陽一郎、泉佳伸
    • Organizer
      第62回 放射線化学討論会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Development of the new radiation monitoring system using DNA molecules as a radiation sensor2018

    • Author(s)
      Kikuo SHIMIZU , Youichirou MATUO , Yoshinobu IZUMI , Norihito SATO, Takayoshi YAMAMOTO
    • Organizer
      IRPA2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 放射線によるDNA 損傷の定量評価に関する研究2018

    • Author(s)
      松尾陽一郎、泉佳伸、清水喜久雄:
    • Organizer
      日本保健物理学会 第51回研究発表会、
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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