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

Elucidation of the pathogenesis of leukemia with cohesin mutations and development of novel treatment

Research Project

Project/Area Number 20K22809
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionKyoto University

Principal Investigator

Ochi Yotaro  京都大学, 医学研究科, 助教 (40883707)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords白血病 / コヒーシン / 遺伝子変異 / エピゲノム / 急性骨髄性白血病 / エピジェネティクス
Outline of Research at the Start

急性骨髄性白血病(AML)は予後不良の造血器腫瘍で、侵襲の強い化学療法や造血幹細胞移植以外に根治治療がなく、有効かつ安全な新規治療の開発が望まれている。AMLのうち10-15%がコヒーシン遺伝子群に変異を有するが、我々は白血病コヒーシン変異が染色体三次元構造の破綻による転写異常をきたす事を最近報告した。そこで本研究では、AMLのコヒーシン変異腫瘍細胞に特異的に作用する新規治療開発を目指し、特にエピゲノム・転写装置を標的とする新規薬剤の有効性を検討するほか、CRISPRライブラリスクリーニングによるコヒーシン変異白血病の脆弱性を網羅的に探索する。

Outline of Final Research Achievements

Approximately 10-20% of myeloid neoplasms have mutations in cohesin complex genes, but the molecular mechanisms by which cohesin mutations cause leukemia are not fully understood. This study aims to elucidate the molecular abnormalities caused by cohesin mutations and to develop mutation-specific therapies.
We applied genome editing to establish cohesin-deficient leukemia cell lines. Some anticancer drugs targeting the epigenome showed specific growth inhibitory effects on the cohesin-deficient lines. This effect was also observed in a transplantation model in immunodeficient mice. In addition, a new multiple mutant mouse model of cohesin mutation and other driver gene mutations was generated to demonstrate the cooperative effects of both genes at the phenotypic and molecular levels.

Academic Significance and Societal Importance of the Research Achievements

本研究では、白血病の約10-20%と高頻度に認められるコヒーシン遺伝子変異の意義を詳細に解析した。ゲノム編集技術によって、白血病のコヒーシン遺伝子変異を細胞株やマウスモデルで再現することで、分子病態の解明や新規治療開発などの実験を可能にした。これらの新規に作成した遺伝子変異モデルを活用することで、コヒーシン変異が白血病を引き起こす機序を明らかにするとともに、コヒーシン遺伝子変異を特異的に標的とする新規の抗癌剤候補を同定することができた。

Report

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

    (9 results)

All 2021

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (3 results) (of which Invited: 1 results) Book (1 results)

  • [Journal Article] Combined landscape of single-nucleotide variants and copy number alterations in clonal hematopoiesis2021

    • Author(s)
      Saiki Ryunosuke、Momozawa Yukihide、Nannya Yasuhito、Nakagawa Masahiro M.、Ochi Yotaro et al
    • Journal Title

      Nature Medicine

      Volume: 27 Issue: 7 Pages: 1239-1249

    • DOI

      10.1038/s41591-021-01411-9

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular classification and diagnostics of upper urinary tract urothelial carcinoma2021

    • Author(s)
      藤井陽一、佐藤悠佑、鈴木啓道、川合剛人、森川鉄平、白石友一、中川徹、久米春喜、小川誠司他
    • Journal Title

      Cancer Cell

      Volume: 39 Issue: 6 Pages: 793-809

    • DOI

      10.1016/j.ccell.2021.05.008

    • NAID

      120007089270

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular pathogenesis of myelodysplastic syndromes with concurrent mutations in cohesin STAG2 and transcription factor RUNX12021

    • Author(s)
      越智 陽太郎
    • Journal Title

      Rinsho Ketsueki

      Volume: 62 Issue: 5 Pages: 352-359

    • DOI

      10.11406/rinketsu.62.352

    • NAID

      130008049792

    • ISSN
      0485-1439, 1882-0824
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Clonal evolution and clinical implications of genetic abnormalities in blastic transformation of chronic myeloid leukaemia.2021

    • Author(s)
      Ochi Y, Yoshida K, Huang YJ, Kuo MC, Nannya Y, Sasaki K, Mitani K, et al.
    • Journal Title

      Nat comm

      Volume: 12 Issue: 1 Pages: 2833-2833

    • DOI

      10.1038/s41467-021-23097-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chromatin-Spliceosome Mutations in Acute Myeloid Leukemia2021

    • Author(s)
      Ochi Yotaro、Ogawa Seishi
    • Journal Title

      Cancers

      Volume: 13 Issue: 6 Pages: 1232-1232

    • DOI

      10.3390/cancers13061232

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Clonal evolution and prognostic impact of mutations in blast crisis of chronic myeloid leukemia2021

    • Author(s)
      Yotaro Ochi, Kenichi Yoshida, Yasuhito Nannya etl al
    • Organizer
      日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Clonal evolution and clinical impact of genetic lesions in blast crisis of chronic myeloid leukemia2021

    • Author(s)
      Yotaro Ochi, Kenichi Yoshida, Yasuhito Nannya et al
    • Organizer
      日本血液学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 骨髄性腫瘍の遺伝子変異による転写異常の解明と新規治療法の開発2021

    • Author(s)
      越智陽太郎
    • Organizer
      日本血液学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Book] Medical Science Digest 2021年 2月号2021

    • Author(s)
      越智陽太郎
    • Total Pages
      53
    • Publisher
      ニュー・サイエンス社
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-09-29   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi