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Establishment of a research platform for individual differences in radiation exposure effects using induced pluripotent stem cells and advanced microscopy

Research Project

Project/Area Number 21H03599
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 63020:Radiation influence-related
Research InstitutionHiroshima University

Principal Investigator

Watanabe Tomonobu  広島大学, 原爆放射線医科学研究所, 教授 (00375205)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2023: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2022: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2021: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywords放射線被ばく影響評価 / ラマン散乱スペクトル計測 / iPS細胞 / 放射線ひばく影響 / 低線量域 / iPS細胞技術 / 個人差研究 / 光学顕微鏡 / 放射線被ばく障害 / 放射線被ばく影響 / 停戦領域 / ラマン散乱分光計測 / 一分子計測 / 低線放射線被ばく影響
Outline of Research at the Start

私たちは、日常的に低線量域(100mSv~200mSv以下)の放射線に被ばくしている。しかし、その個人差医に関する研究は、ほぼ進んでいない。ヒトに対して人為的に放射線被ばく影響を与えることが出来ないからである。そこで、本研究では、人工多能性幹細胞(iPS細胞)に対する放射線被ばく影響および耐性を網羅的に定量する光計測システムを開発し、低線量放射線被ばく影響の個人差を調査する実験基盤を確立する。

Outline of Final Research Achievements

This study aimed to establish a technical basis for investigating individual differences in radiation exposure effects on iPS cells (and differentiated cells) using advanced optical imaging technology. First, we developed a technique to evaluate the effect of radiation exposure on DNA structure and metabolic capacity of reactive oxygen species (ROS) by applying a single molecule measurement method. Second, based on Raman scattering spectroscopy, we established a technique to evaluate the differences in human induced pluripotent stem cells (iPS cells) after γ-ray irradiation. Especially, the latter technique exhibited a correlation between radiation exposure tolerance and Raman spectra of human iPS cells of different origins (different races), indicating the practicality and effectiveness of this method.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、今後の放射線被ばく影響の個人差調査を促進する可能性がある。ラマン散乱スペクトル計測には、トランスクリプトミクス等の生化学計測と比較して、一切の化学的/生物学的調整を必要としないため、非常に迅速にデータを収集できるからだ。一方で、ラマン散乱スペクトルが放射線被ばく耐性を表現できると断定するためには、実験サンプル数が少なく、また、その生物学的根拠も明らかになっていない。今後、計測実例を増やし、また、トランスクリプトミクスやゲノム情報との相関を調べていくことで、将来的には細胞に光を当てるだけで放射線被ばく耐性を推定できるようになると期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (15 results)

All 2024 2023 2022 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Yuragi biomarker concept for evaluating human induced pluripotent stem cells using heterogeneity-based Raman finger-printing2024

    • Author(s)
      Fujita Hideaki、Haruki Takayuki、Sudo Kazuhiro、Koga Yumiko、Nakamura Yukio、Abe Kuniya、Yoshida Yasuhiko、Koizumi Keiichi、Watanabe Tomonobu M
    • Journal Title

      Biophysics and Physicobiology

      Volume: 21 Issue: Supplemental Pages: n/a

    • DOI

      10.2142/biophysico.bppb-v21.s016

    • ISSN
      2189-4779
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 心筋分化に対する晩発性被ばく影響を光で定量評価する2024

    • Author(s)
      渡邉朋信
    • Journal Title

      Isotope News

      Volume: 792 Pages: 24-24

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of crossbridge-state during cardiomyocyte beating using second harmonic generation2023

    • Author(s)
      Fujita Hideaki、Kaneshiro Junichi、Takeda Maki、Sasaki Kensuke、Yamamoto Rikako、Umetsu Daiki、Kuranaga Erina、Higo Shuichiro、Kondo Takumi、Asano Yoshihiro、Sakata Yasushi、Miyagawa Shigeru、Watanabe Tomonobu M
    • Journal Title

      Life Science Alliance

      Volume: 6 Issue: 7 Pages: e202302070-e202302070

    • DOI

      10.26508/lsa.202302070

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single‐molecule tracking of Nanog and Oct4 in living mouse embryonic stem cells uncovers a feedback mechanism of pluripotency maintenance2023

    • Author(s)
      Okamoto Kazuko、Fujita Hideaki、Okada Yasushi、Shinkai Soya、Onami Shuichi、Abe Kuniya、Fujimoto Kenta、Sasaki Kensuke、Shioi Go、Watanabe Tomonobu M
    • Journal Title

      The EMBO Journal

      Volume: 42 Issue: 18

    • DOI

      10.15252/embj.2022112305

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent Advances in Raman Spectral Imaging in Cell Diagnosis and Gene Expression Prediction2022

    • Author(s)
      Watanabe Tomonobu M.、Sasaki Kensuke、Fujita Hideaki
    • Journal Title

      Genes

      Volume: 13 Issue: 11 Pages: 2127-2127

    • DOI

      10.3390/genes13112127

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Effects of radiation on human iPSC derived cardiomyocyte myosin function evaluated by SHG microscopy2024

    • Author(s)
      Hideaki Fujita, Tomonobu M Watanabe, et al.
    • Organizer
      Biophysical Society Annual Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Application of Optical Techniques to Evaluate Radiation Effects2023

    • Author(s)
      Hideaki Fujita, Tomonobu M Watanabe
    • Organizer
      The 8th International Symposium of the Network-type Joint Usage/Research Center for Radiation Disaster Medical Science
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimation of human individual radiosensitivity using Raman spectroscopy and iPSC2023

    • Author(s)
      Hideaki Fujita, Tomonobu M Watanabe, et al.
    • Organizer
      日本生物物理学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Dosimetry using white and bleached human black hair using Raman spectroscopy2023

    • Author(s)
      Hideaki Fujita, Tomonobu M Watanabe, et al.
    • Organizer
      International Conference on Cell and Tissue Science.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 散乱光に含まれる生物学的情報を利用する2023

    • Author(s)
      渡邉朋信
    • Organizer
      情報計測オンラインセミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Investigation of acquired cardiomyopathy on iPS differentiation by radiation based on advanced optical microscopy2023

    • Author(s)
      渡邉朋信
    • Organizer
      第7回放射線災害・医科学研究拠点国際シンポジウム
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ラマン散乱スペクトルの揺らぎによる細胞の状態遷移予測2022

    • Author(s)
      渡邉朋信
    • Organizer
      日本生化学会北陸支部シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ラマン散乱スペクトルの「揺らぎ」から細胞分化を予測する2022

    • Author(s)
      渡邉朋信
    • Organizer
      第45回分子生物学会ワークショップ
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Remarks] 個体を傷付けず、生きた心筋活性を光で定量 -細胞内筋力発生の評価技術として、心疾患の研究加速に期待-

    • URL

      https://www.riken.jp/press/2023/20230526_5/index.html

    • Related Report
      2023 Annual Research Report
  • [Patent(Industrial Property Rights)] ES細胞またはiPS細胞の評価装置および評価方法2022

    • Inventor(s)
      渡邉朋信,藤田英明
    • Industrial Property Rights Holder
      広島大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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