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J-GLOBAL ID：200901096421311280   Update date: Mar. 07, 2026

TOMITA Masanori

トミタ マサノリ | TOMITA Masanori
Affiliation and department：
Central Research Institute of Electric Power Industry Biology and Environmental Chemistry Division, Sustainable System Research Laboratory

About Central Research Institute of Electric Power Industry Biology and Environmental Chemistry Division, Sustainable System Research Laboratory


Job title： R&D Manager, Senior Research Scientist
Homepage URL  (1)： http://criepi.denken.or.jp/
Research field  (3)： Molecular biology ,  Biophysics ,  Environmental effects of radiation
Research keywords  (9)： Microbeam ,  Intercellular signaling ,  Cell death ,  Cell competition ,  stem cells ,  Low dose/dose-rate radiation ,  DNA double-strand breaks ,  DNA repair ,  DNA damage
Research theme for competitive and other funds  (8)：
  • 2023 - 2026 Elucidation of the mechanism of cytoplasm-cell nucleus cross-talk that determines cell survival after exposure to ionizing radiation
  • 2019 - 2023 mTert幹細胞に特異的な遺伝子の解析による幹細胞休止性と放射線抵抗性の理解
  • 2012 - 2017 Role of non-homologous end joining in biological response under low dose-rate irradiation condition
  • 2009 - 2011 A nalys i s of biological effect o f clustered DNA damage induced by X-ray microbeam
  • 2006 - 2006 放射光マイクロビーム細胞照射装置を用いたDNA損傷修復機構の可視化解析
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Papers (84)：
  • Kouki Uchinomiya, Masanori Tomita. A mathematical model assuming frequency-dependent cost for analyzing the influence of cell competition on radiation effects. PLOS One. 2025
  • Ayumi Shiro, Tamon Kusumoto, Shintaro Nara, Ryoichi Hirayama, Munetoshi Maeda, Masanori Tomita, Takashi Kondo, Hiroyuki Saitoh. Irradiation system for biological experiments on BL14B1 at SPring-8. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2024. 1069. 169931-169931
  • Tatsuhiko Imaoka, Satoshi Tanaka, Masanori Tomita, Kazutaka Doi, Megumi Sasatani, Keiji Suzuki, Yutaka Yamada, Shizuko Kakinuma, Michiaki Kai. Human-mouse comparison of the multistage nature of radiation carcinogenesis in a mathematical model. International journal of cancer. 2024. 155. 6. 1101-1111
  • Yutaka Yamada, Tatsuhiko Imaoka, Toshiyasu Iwasaki, Junya Kobayashi, Munechika Misumi, Kazuo Sakai, Takashi Sugihara, Keiji Suzuki, Hiroshi Tauchi, Hiroshi Yasuda, et al. Establishment and activity of the planning and acting network for low dose radiation research in Japan (PLANET): 2016-2023. Journal of radiation research. 2024
  • Masanori Tomita, Masaya Torigata, Tadayuki Ohchi, Atsushi Ito. Observation of Histone H2AX Phosphorylation by Radiation-Induced Bystander Response Using Titanium Characteristic X-ray Microbeam. Biology. 2023. 12. 5
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MISC (85)：
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Patents (1)：
  • 細胞質照射方法
Books (1)：
  • 放射線医科学の事典 : 放射線および紫外線・電磁波・超音波
    朝倉書店 2019 ISBN:9784254301175
Lectures and oral presentations  (33)：
  • Irradiation sequence in combined radiation exposure modifies the cellular radiosensitivity
    (2020)
  • Mathematical model for cancer risk and accumulation of mutations which caused by erplication errors and external factors
    (2020)
  • Evaluation of the radiation-induced stem cell competition by using intestinal organoids
    (2020)
  • 変異の蓄積で生じるがんに対する外的要因の影響についての数理モデル
    (2020年度日本数理生物学会年会 2020)
  • 低線量域においてATMが細胞核-細胞質間情報伝達に果たす役割
    (日本放射線影響学会大会講演要旨集 2018)
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Works (2)：
  • 放射光共同利用実験
    2003 - 2004
  • 重粒子線がん治療装置等共同利用研究
    2003 - 2004
Education (3)：
  • 1998 - 2002 The University of Tokyo
  • 1996 - 1998 Rikkyo University Graduate School of Science Field of Study: Life Science
  • 1992 - 1996 Rikkyo University College of Science Department of Physics
Professional career (1)：
  • 博士(医学) (東京大学大学院)
Work history (5)：
  • 2025/07 - 現在 Central Research Institute of Electric Power Industry Biology and Environmental Chemistry Division, Sustainable System Research Laboratory R&D Manager, Senior Research Scientist
  • 2021/07 - 2025/06 Central Research Institute of Electric Power Industry Biology and Environmental Chemistry Division, Sustainable System Research Laboratory R&D Manager, Senior Research Scientist
  • 2015/07 - 2021/06 Central Research Institute of Electric Power Industry Senior Research Scientist
  • 2008/04 - 2015/06 Central Research Institute of Electric Power Industry Research Scientist
  • 2005/04 - 2008/03 Central Research Institute of Electric Power Industry Nuclear Technology Research Laboratory, Radiation Safety Research Center Visiting Researcher
Committee career (1)：
  • 2020/06 - 現在 日本放射線影響学会 理事
Awards (6)：
  • 2025/10 - The Japanese Radiation Research Society The Japanese Radiation Research Society Distinguished Scientist Award
  • 2015/11 - 電力中央研究所 原子力技術研究所 所長表彰 放射線誘発バイスタンダー応答のリスクとの関連性の検証
  • 2014/03 - 放射線影響協会 平成25年度放射線影響研究奨励賞 X線マイクロビームを用いた放射線誘発バイスタンダー応答の機構解明
  • 2011/11 - The JRR Terasima Award A New Paradigm in Radioadaptive Response Developing from Microbeam Research
  • 2009/11 - The JRR Terasima Award Role of DNA Double-strand Break Repair Genes in Cell Proliferation under Low Dose-rate I rradiation Conditions
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Association Membership(s) (5)：
Radiation Research Society ,  JAPAN HEALTH PHYSICS SOCIETY ,  THE BIOPHYSICAL SOCIETY OF JAPAN ,  日本分子生物学会 ,  日本放射線影響学会
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