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Development of Flow-Fish method for identifying cancer caused by radiation exposure

Research Project

Project/Area Number 21K19851
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 63:Environmental analyses and evaluation and related fields
Research InstitutionNational Institutes for Quantum Science and Technology

Principal Investigator

Kakinuma Shizuko  国立研究開発法人量子科学技術研究開発機構, 放射線医学研究所 放射線影響研究部, 研究員 (20392219)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
KeywordsFlow-Fish法 / 染色体 / 欠失 / Flow-FISH法 / 1細胞レベル解析
Outline of Research at the Start

本研究では、放射線誘発白血病マウスモデルの解析で明らかになった特徴的な異常を分子指標に、1細胞レベルの情報を測定できるFlow Cytometry法と、染色体の欠失が検出可能な蛍光in situハイブリダイゼーション(FISH)法を組み合わせたFlow-FISH法の開発に挑戦する。Flow-FISH法が開発できれば、低レベルの放射線被ばくによるがんリスクを直接的に評価する手法や発がんメカニズム解明のブレークスルーに繋がるだけでなく、がんを始めとする染色体異常を伴う疾病の早期発見や診断、治療効果の予測法の開発が実現する。

Outline of Final Research Achievements

In this study, we attempted to develop a Flow-FISH method that combines Flow Cytometry (FACS), which can measure information at the single cell level, and Fluorescence in situ Hybridization (FISH), which can detect chromosomal deletions. We performed FISH using a Pax5-BAC probe and a chromosome 4 painting probe on B-cell lymphoma in which the Pax5 region of chromosome 4 had been deleted due to radiation exposure and confirmed the translocation and deletion of the region containing Pax5 by chromosome observation. Cell labeling in liquid was not suitable for FACS analysis because it was difficult to maintain the morphology of the cell and nucleus. We also attempted the dCas9-FISH method, which targets Pax5 in live cells, and succeeded in fluorescently labeling the cell nuclei in some lymphocytes.

Academic Significance and Societal Importance of the Research Achievements

原爆被爆者や医療放射線に被ばくした集団の疫学調査から、被ばくした量に比例してがんのリスクが上昇することが示されている。低レベルの放射線被ばくによる発がんリスクは、自然発症と放射線被ばくによるがんを区別できないため、正確に評価することは困難である。1細胞レベルの情報を測定できるFlow-FISH法が開発できれば、低レベルの放射線被ばくによるがんリスクを直接的に評価する手法や発がんメカニズム解明のブレークスルーに繋がるだけでなく、がんを始めとする染色体異常を伴う疾病の早期発見や診断、治療効果の予測法の開発が実現する。

Report

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

    (13 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (12 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Genomic profile of radiation-induced early-onset mouse B-cell lymphoma recapitulates features of Philadelphia chromosome-like acute lymphoblastic leukemia in humans2022

    • Author(s)
      Tachibana Hirotaka, Daino Kazuhiro, Ishikawa Atsuko, Morioka Takamitsu, Shang Yi, Ogawa Mari, Matsuura Akira, Shimada Yoshiya, Kakinuma Shizuko
    • Journal Title

      Carcinogenesis

      Volume: 43 Issue: 7 Pages: 693-703

    • DOI

      10.1093/carcin/bgac034

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] マウスを用いた放射線被ばくによるPax5欠失リンパ球のがん化過程の解析2023

    • Author(s)
      橘 拓孝, 尚 奕, 鶴岡 千鶴, 砂押 正章, 吉田 光明, 飯塚 大輔, 臺野 和広, 森岡 孝満, 藤嶋 洋平, 今岡 達彦, 冨田 雅典, 柿沼 志津子
    • Organizer
      第3回若手放射線影響研究会, 日本放射線影響学会若手部会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Dynamics of Pax5 deficient cells in B-cell lymphomagenesis in gamma-irradiated B6C3F1 mice2023

    • Author(s)
      Tachibana Hirotaka, Daino Kazuhiro, Morioka Takamitsu, Shang Yi, Tsuruoka Chizuru, Ishikawa Atsuko, Shimada Yoshiya, Kakinuma Shizuko
    • Organizer
      第82回日本癌学会学術総会,
    • Related Report
      2023 Annual Research Report
  • [Presentation] Interstitial deletion is a radiation signature in tumors of various animal models2023

    • Author(s)
      Kakinuma Shizuko, Yanagihara Hiromi, Nakayama Takafumi, Tachibana Hirotaka, Sunaoshi Masaaki, Daino Kazuhiro, Morioka Takamitsu, Tsuruoka Chizuru, Shang Yi, Imaoka Tatsuhiko, Shimada Yoshiya
    • Organizer
      The 17th International Congress of Radiation Research (ICRR2023), International Association for Radiation Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 遺伝子改変マウス用いた放射線誘発B-ALLの原因遺伝子の検証2022

    • Author(s)
      橘 拓孝, 臺野 和広, 尚 奕, 鶴岡 千鶴, 砂押 正章, 飯塚 大輔, 森岡 孝満, 松浦 彰, 今岡 達彦, 柿沼 志津子
    • Organizer
      第2回若手放射線影響研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Molecular mechanisms underlying the development of preleukemic cells and subsequent rapid B-cell leukemogenesis by radiation exposure in mice2022

    • Author(s)
      橘 拓孝, 臺野 和広, 吉田 光明, 尚 奕, 鶴岡 千鶴, 砂押 正章, 藤嶋 洋平, 飯塚 大輔, 森岡 孝満, 松浦 彰, 島田 義也, 柿沼 志津子
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Characteristic genetic abnormalities revealed by genomic analysis of radiation-induced cancer2022

    • Author(s)
      臺野 和広, 橘 拓孝, 石川 敦子, 鈴木 健之, 森岡 孝満, 今岡 達彦, 柿沼 志津子
    • Organizer
      日本環境変異原ゲノム学会(JEMS)第51回大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 放射線によるマウスB細胞性リンパ腫・白血病の 発症メカニズム研究2022

    • Author(s)
      橘 拓孝
    • Organizer
      令和4年東京RBC特別放談会
    • Related Report
      2022 Research-status Report
  • [Presentation] 放射線誘発B細胞リンパ腫の分子発がんメカニズム解析2021

    • Author(s)
      橘 拓孝, 臺野 和広, 石川 敦子, 森岡 孝満, 鶴岡 千鶴, 尚 奕, 砂押 正章, 松浦 彰, 島田 義也, 柿沼 志津子
    • Organizer
      第58回日本アイソトープ・放射線研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Analysis of the carcinogenic process of early-onset B-cell lymphoma in mice by radiation2021

    • Author(s)
      橘 拓孝, 臺野 和広, 飯塚 大輔, 尚 奕, 鶴岡 千鶴, 砂押 正章, 森岡 孝満, 吉田 光明, 松浦 彰, 島田 義也, 柿沼 志津子
    • Organizer
      日本放射線影響学会第64回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 放射線誘発B細胞リンパ腫の分子発がんメカニズム解析2021

    • Author(s)
      橘 拓孝, 臺野 和広, 石川 敦子, 森岡 孝満, 尚 奕, 松浦 彰, 島田 義也, 柿沼 志津子
    • Organizer
      第1回放射線影響研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Analysis of molecular mechanisms of radiation-induced B-cell lymphomas by animal experiment2021

    • Author(s)
      橘 拓孝, 臺野 和広, 石川 敦子, 森岡 孝満, 鶴岡 千鶴, 尚 奕, 砂押 正章, 松浦 彰, 島田 義也, 柿沼 志津子
    • Organizer
      第58回日本アイソトープ・放射線研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Molecular signatures of radiation-induced mouse precursor B-cell lymphoma2021

    • Author(s)
      Tachibana Hirotaka, Daino Kazuhiro, Ishikawa Atsuko, Morioka Takamitsu, Shang Yi, Matsuura Akira, Shimada Yoshiya, Kakinuma Shizuko
    • Organizer
      International Symposium on the Environmental Dynamics of Radionuclides and Biological Effects of Low Dose-Rate Radiation
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-07-13   Modified: 2025-01-30  

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