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Elucidation of the molecular biological mechanisms of irradiated cells cultured under normoxic or hypoxic conditons

Research Project

Project/Area Number 20K08065
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 InstitutionNational Institutes for Quantum Science and Technology

Principal Investigator

Liu Cuihua  国立研究開発法人量子科学技術研究開発機構, 量子医科学研究所 重粒子線治療研究部, 主任研究員 (00512427)

Co-Investigator(Kenkyū-buntansha) 平山 亮一  国立研究開発法人量子科学技術研究開発機構, 重粒子線治療研究部, 研究統括 (90435701)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords放射線 / 重粒子線 / 低酸素培養 / miRNA / トランスフェクション / 照射 / Fold change / ダウンレギュレート / アップレギュレート / miRNA array / 高LET炭素線 / 炭素線 / miRNAプロファイリング / 低酸素ストレス応答
Outline of Research at the Start

これまで我々はX線や炭素線などの放射線照射後、低酸素環境で培養した細胞は放射線抵抗性になり、染色体異常頻度は低いことを明らかにしてきた。その詳細メカニズムを解析するために1)照射後、異なる酸素濃度環境で培養した細胞のmiRNAのプロファイリングを解析し、培養する有・低酸素環境の中で特異的に変化するmiRNAを特定する。2)低酸素環境特異的なmiRNA及びタンパク質の発現と細胞致死や染色体異常頻度の生物応答の関連性について明らかにする。これらの結果から放射線照射後の有・低酸素環境に対する細胞応答機構を遺伝子、タンパク質、染色体ならびに細胞レベルでの機構解明に迫る。

Outline of Final Research Achievements

Many miRNAs in mouse kidney primary cultured cells cultured in a hypoxic condition were found to be changed by more than 2 times or less than 0.5 times compared with the cells cultured in a normoxic conditions after irradiation. Specifically, in the case of mmu-miR-210-3p and mmu-miR-210-5p, regardless of the quality of radiation, the fold changes was 2 to 7 times higher than those cells cultured in a normoxic conditions. After transfected the mimic or inhibitor of these two kinds of miRNA into mouse kidney primary cultured cells, the cell proliferation and radiation sensitivity were altered. The results showed that the miR-210-3p and miR-210-5p maybe associated with cell radiosensitivity or cell proliferation.
On the other hand, the numbers of fold-changed miRNAs in human glioblastoma cells (U87MG) was lower than that mouse kidney primary cells cultured under the same conditions.

Academic Significance and Societal Importance of the Research Achievements

本研究では生体内低酸素環境を模擬した実験系において、がん細胞ならびに正常組織細胞のmiRNA発現プロファイルを解析する。miRNA発現スクリーニングにより低酸素環境で培養した細胞の放射線抵抗性やNHEJ修復忠実度に関するメカニズムを明らかにする。これらの実験により、生体内を模擬した低酸素環境下でどのような因子が放射線応答に関わっているかを調べ、放射線治療生物学の重要な基礎データを蓄積する。そして新たな有・低酸素生体応答の研究基盤を構築する。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2023 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (5 results)

  • [Journal Article] Primary and Secondary Bystander Effects of Proton Microbeam Irradiation on Human Lung Cancer Cells under Hypoxic Conditions2023

    • Author(s)
      Narongchai Autsavapromporn , Alisa kobayashi , Cuihua Liu , Aphidet Duangya , Masakazu Oikawa , Tengku Ahbrizal Tengku Ahmad , Teruaki Konishi
    • Journal Title

      Biology

      Volume: 12(12) Issue: 12 Pages: 1485-1485

    • DOI

      10.3390/biology12121485

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The impact of DNA double-strand break repair pathways throughout the carbon-ion Spread-out Bragg peak beam2023

    • Author(s)
      Dylan Buglewicz , Jessica K.F. Buglewi , Hirakawa Hirokazu , Kato Takamitsu , Cuihua Liu , YaQun Fang , Kusumoto Tamon , Fujimori Akira , Sai Sei
    • Journal Title

      Cancer Science

      Volume: 114(12) Issue: 12 Pages: 4548-4548

    • DOI

      10.1111/cas.15972

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fluorescence in situ hybridization analysis of chromosomal aberrations in mouse splenocytes at one- and two-months after total body exposure to iron-56 (Fe) ion particles or X-rays2022

    • Author(s)
      Katsube Takanori , Wang Bing , Tanaka Kaoru , Ninomiya Yasuharu , Hirakawa Hirokazu , Cuihua Liu , Maruyama Kouichi , Guillaume Vares , Qiang Liu , Murakami Masahiro , Nakajima Tetsuo , Fujimori Akira , Nenoi Mitsuru:
    • Journal Title

      Mutation Research/Genetic Toxicology and Environmental Mutagenesis

      Volume: 882 Pages: 503548-503548

    • DOI

      10.1016/j.mrgentox.2022.503548

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhanced Effects of Chronic Restraint-Induced Psychological Stress on Total Body Fe-Irradiation-Induced Hematopoietic Toxicity in Trp53-Heterozygous Mice2022

    • Author(s)
      Wang Bing , Katsube Takanori , Tanaka Kaoru , Ninomiya Yasuharu , Hirakawa Hirokazu , Cuihua Liu , Maruyama Kouichi , Murakami Masahiro , Nakajima Tetsuo , Fujimori Akira , Nenoi Mitsuru
    • Journal Title

      life

      Volume: 12(4)565

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hypoxia and Proton microbeams: Role of Gap Junction Intercellular Communication in Inducing Bystander Responses on Human Lung Cancer Cells and Normal Cells2022

    • Author(s)
      Narongchai Autsavapromporn , Alisa Kobayashi , Cuihua Liu , Churdsak Jaikang , Tengku Ahbrizal Tengku Ahmad , Masakazu Oikawa , Teruaki Konishi
    • Journal Title

      Radiation Research

      Volume: 197(2) Issue: 2 Pages: 122-130

    • DOI

      10.1667/rade-21-00112.1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Altered Induction of Reactive Oxygen Species by X-rays in Hematopoietic Cells of C57BL/6-Tg (CAG-EGFP) Mice2021

    • Author(s)
      Cuihua Liu , Hirakawa Hirokazu , Katsube Takanori , YaQun Fang , Tanaka Kaoru , Nenoi Mitsuru , Fujimori Akira , Wang Bing
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22(13) Issue: 13 Pages: 6929-6929

    • DOI

      10.3390/ijms22136929

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Altered Response to Total Body Irradiation of C57BL/6-Tg (CAG-EGFP) Mice2020

    • Author(s)
      Cuihua Liu , Kaoru Tanaka , Takanori Katsube , Guillaume Vares , Kouichi Maruyama , Yasuharu Ninomiya , Zeenath Fardous , Chao Sun , Akira Fujimori , Stephanie G. Moreno , Mitsuru Nenoi , Bing Wang
    • Journal Title

      Dose Response

      Volume: 18 (3) Issue: 3 Pages: 1-11

    • DOI

      10.1177/1559325820951332

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Biological responses are altered when mouse kidney cells are cultured in different oxygen concentrations after radiations2023

    • Author(s)
      劉 翠華、平川 博一、平山 亮一
    • Organizer
      第 60 回 日本放射線腫瘍学会生物部会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A comparative study of the biological response of irradiated mouse kidney cells cultured under different oxygen conditions2023

    • Author(s)
      劉 翠華, 平川 博一, 平山 亮一
    • Organizer
      日本放射線影響学会第66回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 外来性GFPを発現する組換えマウスにおける放射線応答の変化2023

    • Author(s)
      Cuihua Liu, Tanaka Kaoru, Hirakawa Hirokazu, Katsube Takanori, YaQun Fang, Maruyama Kouichi, Ninomiya Yasuharu, Fujimori Akira, Nenoi Mitsuru, Wang Bing
    • Organizer
      日本放射線影響学会第66回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Biological responses are altered when mouse kidney cells are cultured in different oxygen concentrations after radiations2022

    • Author(s)
      Liu cuihua,Hirakawa hirokazu,Hirayama ryoichi,Fujimori akira
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] X線ならびに高LET放射線におけるDNA断片化とその修復における低酸素の影響2022

    • Author(s)
      平山亮一、鵜沢玲子,高野勇貴,劉翠華、平野祥之、野口実穂,小西輝昭,長谷川純崇
    • Organizer
      日本量子医科学会第2回学術大会
    • Related Report
      2022 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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