• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Establishment of the system to visualize cell competition of intestinal stem cells in carcinogenesis

Research Project

Project/Area Number 20K21846
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 InstitutionHiroshima University

Principal Investigator

Sasatani Megumi  広島大学, 原爆放射線医科学研究所, 准教授 (80423052)

Co-Investigator(Kenkyū-buntansha) 志村 勉  国立保健医療科学院, その他部局等, 上席主任研究官 (40463799)
神谷 研二  広島大学, 医療政策室, 特任教授 (60116564)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords放射線 / 発がん / 幹細胞 / 細胞競合 / 放射線発がん / 化学発がん
Outline of Research at the Start

近年、正常細胞は、「細胞競合」によりがん細胞を認識、排除していることが報告され、がん制御における「細胞競合」の重要性が注目されている。我々はこれまでに、極低線量の発がん影響とDNA上の放射線痕跡を高感度に検出可能な放射線発がんモデルを開発した。このマウスモデルを用いて、発がんにおける「細胞競合」現象を示唆する知見を得た。そこで本研究課題では、我々の研究成果を応用し「細胞競合」を検出できるマウスモデル、およびex vivoシステムを開発、利用し、発がんにおける「細胞競合」を制御する分子機構の解明を目指す。

Outline of Final Research Achievements

Recently, it has been reported that "cell competition" mechanism has the function not only in the development of tissues and organs but also as a system to regulate carcinogenesis, and the importance of "cell competition" in carcinogenesis is attracting attention. In this study, we applied our previous findings to make a mouse model capable of detecting "cell competition. Using the mouse model, we have observed that "cell competition" in intestinal stem cells located at the bottom of crypts.

Academic Significance and Societal Importance of the Research Achievements

本研究は、我々がこれまでに得た知見を応用し、「細胞競合」を検出することができるマウスモデルを作成し、腸管組織幹細胞における「細胞競合」を組織レベルで解析した。本研究で観察される「細胞競合」機構は発がん過程において重要な役割を果たすと考えられるため、新しい放射線発がん機構として学術的に高い意義を有すると考える。また、本研究で明らかにされる「細胞競合」の機構解明は、将来的に、新抗がん戦略としても期待できると考える。

Report

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

    (21 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 9 results) Presentation (11 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Molecular and cellular basis of the dose-rate-dependent adverse effects of radiation exposure in animal models. Part II: Hematopoietic system, lung and liver2023

    • Author(s)
      Suzuki Keiji、Imaoka Tatsuhiko、Tomita Masanori、Sasatani Megumi、Doi Kazutaka、Tanaka Satoshi、Kai Michiaki、Yamada Yutaka、Kakinuma Shizuko
    • Journal Title

      Journal of Radiation Research

      Volume: 64 Issue: 2 Pages: 228-249

    • DOI

      10.1093/jrr/rrad003

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular and cellular basis of the dose-rate-dependent adverse effects of radiation exposure in animal models. Part I: Mammary gland and digestive tract2023

    • Author(s)
      Suzuki Keiji、Imaoka Tatsuhiko、Tomita Masanori、Sasatani Megumi、Doi Kazutaka、Tanaka Satoshi、Kai Michiaki、Yamada Yutaka、Kakinuma Shizuko
    • Journal Title

      Journal of Radiation Research

      Volume: 64 Issue: 2 Pages: 210-227

    • DOI

      10.1093/jrr/rrad002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Melatonin and MitoEbselen-2 Are Radioprotective Agents to Mitochondria2022

    • Author(s)
      Shimura Tsutomu、Shiga Rina、Sasatani Megumi、Kamiya Kenji、Ushiyama Akira
    • Journal Title

      Genes

      Volume: 14 Issue: 1 Pages: 45-45

    • DOI

      10.3390/genes14010045

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Morphology dynamics in intestinal crypt during postnatal development affect age-dependent susceptibility to radiation-induced intestinal tumorigenesis in ApcMin/+ mice: possible mechanisms of radiation tumorigenesis2022

    • Author(s)
      Sasatani Megumi、Shimura Tsutomu、Doi Kazutaka、Zaharieva Elena Karamfilova、Li Jianxiang、Iizuka Daisuke、Etoh Shinpei、Sotomaru Yusuke、Kamiya Kenji
    • Journal Title

      Carcinogenesis

      Volume: - Issue: 1 Pages: 105-118

    • DOI

      10.1093/carcin/bgac100

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of oxygen on the response of mitochondria to X-irradiation and reactive oxygen species-mediated fibroblast activation2022

    • Author(s)
      Shimura Tsutomu、Totani Rina、Ogasawara Hyougo、Inomata Keiki、Sasatani Megumi、Kamiya Kenji、Ushiyama Akira
    • Journal Title

      International Journal of Radiation Biology

      Volume: 99 Issue: 5 Pages: 769-778

    • DOI

      10.1080/09553002.2023.2142980

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Radiation affects glutathione redox reaction by reduced glutathione peroxidase activity in human fibroblasts2021

    • Author(s)
      Shimura Tsutomu、Nakashiro Chinami、Fujiwara Kazusi、Shiga Rina、Sasatani Megumi、Kamiya Kenji、Ushiyama Akira
    • Journal Title

      Journal of Radiation Research

      Volume: 63 Issue: 2 Pages: 183-191

    • DOI

      10.1093/jrr/rrab122

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Formation of DNA Damage Foci in Human and Mouse Primary Fibroblasts Chronically Exposed to Gamma Radiation at 0.1 mGy/min2021

    • Author(s)
      Zaharieva Elena、Sasatani Megumi、Matsumoto Ryoga、Kamiya Kenji
    • Journal Title

      Radiation Research

      Volume: in press Issue: 1

    • DOI

      10.1667/rade-20-00059.1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chromosomal translocation t(11;14) and p53 deletion induced by the CRISPR/Cas9 system in normal B cell-derived iPS cells2021

    • Author(s)
      Yusuke Azami, Naohiro Tsuyama, Yu Abe, Misaki Sugai-Takahashi, Ken-Ichi Kudo, Akinobu Ota, Karnan Sivasundaram , Moe Muramatsu, Tomonari Shigemura, Megumi Sasatani, Yuko Hashimoto, Shigehira Saji, Kenji Kamiya, Ichiro Hanamura, Takayuki Ikezoe, Masafumi Onodera, Akira Sakai.
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 5216-5216

    • DOI

      10.1038/s41598-021-84628-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanism of turnover or persistence of radiation-induced myofibroblast in vitro2020

    • Author(s)
      Shimura T, Ando T, Narao M, Sasatani M, Kamiya K, Ushiyama A
    • Journal Title

      Cell Cycle

      Volume: 22 Pages: 1-11

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estimation of Dose-Rate Effectiveness Factor for Malignant Tumor Mortality: Joint Analysis of Mouse Data Exposed to Chronic and Acute Radiation2020

    • Author(s)
      Doi Kazutaka、Kai Michiaki、Suzuki Keiji、Imaoka Tatsuhiko、Sasatani Megumi、Tanaka Satoshi、Yamada Yutaka、Kakinuma Shizuko
    • Journal Title

      Radiation Research

      Volume: 194 Issue: 5 Pages: 500-510

    • DOI

      10.1667/rade-19-00003.1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] マウスモデルを用いた放射線発がんにおける被ばく時年齢依存性の解明2022

    • Author(s)
      笹谷めぐみ、神谷研二
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ApcMin/+マウスにおける放射線誘発小腸腫瘍感受性は、形態形成期に高い2022

    • Author(s)
      笹谷めぐみ、神谷研二
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] マウスモデルを用いた放射線発がんにおける被ばく時年齢の影響解明2022

    • Author(s)
      笹谷めぐみ、神谷研二
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Morphology dynamics in intestinal crypt during postnatal development affect age-dependent susceptibility to radiation-induced intestinal tumorigenesis by using ApcMin/+ mice2022

    • Author(s)
      Megumi Sasatani, Tsutomu Shimura, Guanyu Zhou, and Kenji Kamiya
    • Organizer
      The 7th international symposium of the network-type joint usage/research center for radiation disaster medical science
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マウスモデルを用いた低線量・低線量率放射線発がん研究と、幹細胞動態に着目した放射線発がんにおける被ばく時年齢性解明2021

    • Author(s)
      笹谷めぐみ、神谷研二
    • Organizer
      第1回放射線影響学会・若手部会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ApcMin/+マウスでは小児期における被ばくが放射線発がんに高感受性を示す2021

    • Author(s)
      笹谷めぐみ、ZAHARIEVA Elena、神谷研二
    • Organizer
      日本放射線影響学会第64回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Investigation of radiation dose rate effect on loss of heterozygosity in mouse F1 hybrid embryonic stem cells2021

    • Author(s)
      Matsui Ako, Sasatani Megumi, Zaharieva Elena, Kamiya Kenji
    • Organizer
      The 5th International Symposium of the Network-type Joint Usage/ Research Center for Radiation Disaster Medical Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウスモデルを用いた放射線発がんの機構解明2020

    • Author(s)
      神代紗央理、笹谷めぐみ、Elena K Zaharieva、松井亜子、神谷研二
    • Organizer
      第45回中国地区放射線影響研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 実験動物モデルを用いた放射線発がん研究2020

    • Author(s)
      笹谷めぐみ
    • Organizer
      第71回放射線科学研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] The effect of age at exposure on radiation induced tumor risk using ApcMin/+ mice2020

    • Author(s)
      Sasatani Megumi , Kamiya Kenji
    • Organizer
      第79回日本癌学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] The effect of age at exposure on radiation-induced carcinogenesis in ApcMin/+ mice2020

    • Author(s)
      Sasatani Megumi, Zaharieva Elena , Kakomi Saori, Matsui Ako, Kenji Kamiya
    • Organizer
      日本放射線影響学会第63回大会
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-08-03   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi