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Study of somatic mutations in normal blood cells using whole-genome sequencing

Research Project

Project/Area Number 22K20840
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionNational Cancer Center Japan

Principal Investigator

Yoshida Kenichi  国立研究開発法人国立がん研究センター, 研究所, 分野長 (50738226)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords正常血液細胞 / 体細胞性変異 / 血液細胞 / 全ゲノム解析 / 血液
Outline of Research at the Start

がんは遺伝子異常により起こる疾患であるが、正常組織においても遺伝子異常が加齢や環境因子により蓄積しており、発がんの直接の原因として知られているドライバー遺伝子変異も獲得されていることが様々な組織について報告されている。従って、早期の発がんメカニズムの解明には腫瘍を発生する以前の正常組織における遺伝子異常を理解することが重要である。本研究では正常血液細胞について、単一細胞由来造血コロニーから採取したDNA検体を用いて全ゲノム解析により正常血液細胞にみられる遺伝子異常を解析し、蓄積するゲノム異常と飲酒や喫煙などの環境因子との関係や人種による特徴、さらには造血器腫瘍の発症との関係を明らかにする。

Outline of Final Research Achievements

In this study, we aimed to reveal the accumulation of somatic mutations in normal blood cells and its relationship with aging and environmental factors, such as alcohol drinking and smoking, for the further understanding of the mechanisms of development of hematological malignancies. We collected peripheral blood samples from one hundred healthy donors who visited medical checkup and selected the cases who will be subjected to the genetic studies based on their age and smoking and drinking histories. We performed whole-genome sequencing of 174 single-cell blood cell colonies derived from one cord blood sample and 11 healthy donors. As a result, 14 mutations accumulated per year in normal blood cells, which was consistent with the previous reports. There was also a heterogeneity of mutation burden between individuals, which might be related with life history of the donors.

Academic Significance and Societal Importance of the Research Achievements

本研究では日本人の正常血液細胞における加齢や環境因子による体細胞変異の蓄積の全貌が明らかになったが、このデータは今後全ゲノム解析などにより日本人における骨髄性腫瘍の発症の機序を明らかにする上で重要なデータとなると考えられる。また、本研究で健常人から得られたデータは今後、様々な造血器腫瘍に対するがん感受性を有する疾患における血液細胞の研究においても重要なコントロールデータとなると考えられ、学術的な意義が大きい。さらに、今後の研究で血液細胞における体細胞変異の蓄積における個人差や造血器腫瘍発症のリスクと生活習慣との関係が明らかになれば、社会的意義も大きいと考えられる。

Report

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

    (11 results)

All 2024 2023

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results)

  • [Journal Article] Evolutionary histories of breast cancer and related clones2023

    • Author(s)
      Nishimura Tomomi、Kakiuchi Nobuyuki、Yoshida Kenichi、....、Shiraishi Yuichi、Takita Junko、Miyano Satoru、Mandai Masaki、Sato Toshiro、Takeuchi Kengo、Haga Hironori、Toi Masakazu、Ogawa Seishi
    • Journal Title

      Nature

      Volume: 620 Issue: 7974 Pages: 607-614

    • DOI

      10.1038/s41586-023-06333-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Clonal evolution of MDS/AML in patients with cancer predisposition syndromes.2024

    • Author(s)
      Kenichi Yoshida
    • Organizer
      2024 Korean Society of hematology international conference & 65th annual meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Somatic mutations in blood cells with constitutional genome instability.2024

    • Author(s)
      Kenichi Yoshida
    • Organizer
      The 2dn KAI-X Global Conference in GSMSE
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Somatic mutations and clonal evolution in normal blood cells in patients with cancer predisposition syndromes.2023

    • Author(s)
      Kenichi Yoshida, Peter J. Campbell
    • Organizer
      第82回日本癌学会学術総会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 正常組織に見られるクローン進化から考える小児がんの発症.2023

    • Author(s)
      吉田健一
    • Organizer
      第65回日本小児血液・がん学会学術総会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Genetic landscape of myeloid neoplasms in patients with Fanconi anemia and a related disease.2023

    • Author(s)
      Kenichi Yoshida, Mayu Morishita, Miharu Yabe, Nobuyuki Kakiuchi, Minoru Takata, Kotoe Katayama, Seiya Imoto, Seishi Ogawa, Hiromasa Yabe.
    • Organizer
      第85回日本血液学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Genetic landscape of myeloid neoplasms developed in patients with Fanconi anemia and aldehyde degradation deficiency syndrome.2023

    • Author(s)
      Mayu Morishita, Miharu Yabe, Nobuyuki Kakiuchi, Minoru Takata, Kotoe Katayama, Seiya Imoto, Seishi Ogawa, Hiromasa Yabe, Kenichi Yoshida.
    • Organizer
      第65回日本小児血液・がん学会学術総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 胚細胞遺伝子変異を伴う骨髄系腫瘍2023

    • Author(s)
      吉田健一
    • Organizer
      第85回日本血液学会学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Genetic profile of myeloid neoplasms developed with Fanconi anemia and Aldehyde degradation deficiency syndrome.2023

    • Author(s)
      Mayu Morishita, Miharu Yabe, Nobuyuki Kakiuchi, Minoru Takata, Kotoe Katayama, Seiya Imoto, Seishi Ogawa, Hiromasa Yabe, Kenichi Yoshida.
    • Organizer
      65th ASH Annual Meeting and Exposition
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Clonal evolution in normal lung tissue leading to lung cancer development2023

    • Author(s)
      Kenichi Yoshida
    • Organizer
      IMMUNO ONCOLOGY RESEARCH WORKSHOP
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 正常組織の全ゲノム解析によるがんの病態解明2023

    • Author(s)
      吉田健一
    • Organizer
      令和4年度国際がん研究シンポジウム
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-09-01   Modified: 2025-01-30  

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