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Analyses of relationship between clonal hematopoiesis associated with leukemia-related gene mutations and leukemia/solid tumors/cardiovascular diseases

Research Project

Project/Area Number 18K19558
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 54:Internal medicine of the bio-information integration and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Kitamura Toshio  東京大学, 医科学研究所, 教授 (20282527)

Co-Investigator(Kenkyū-buntansha) 合山 進  東京大学, 医科学研究所, 准教授 (80431849)
Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywordsクローン性造血 / 動脈硬化 / HHEX / LDLレセプター / 白血病 / 心血管系疾患 / 固形癌
Outline of Final Research Achievements

We demonstrate that mutant ASXL1 (ASXL1-MT) induces DNA damage via activation of BAP1, de-ubiquitination and activation of Akt1 using a clonal hematopoiesis mouse model expressing ASXL1-MT. This work has at least partly clarified the molecular mechanisms underlying the frequent progression of clonal hematopoiesis to hematological malignancies. In addition, we have also clarified that combination of ASXL1-MT-KI and LDLR knockout (LDLR-KO) followed high fat diet significantly enhances atherosclerosis when compared to that of LDLR-KO.

Academic Significance and Societal Importance of the Research Achievements

健常高齢者の末梢血において白血病と同じ遺伝子変異を1つ有する造血(クローン性造血)は65歳以上の人で10人に1人に検出される。クローン性造血は造血器腫瘍発症リスクを10倍上昇させるが、脳梗塞、心筋梗塞など心血管異常も約2倍多いことが報告されており、こちらが生命予後に関与する。癌患者の4人に1人がクローン性造血を有し、クローン性造血を有する人は有意に癌の再発率が高く予後が悪いこと報告された。これらの現象の分子機序解明は、高齢化社会において重要な課題である。

Report

(2 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • Research Products

    (11 results)

All 2020 2019

All Journal Article (1 results) Presentation (10 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] ASXL1 mutation in clonal hematopoiesis2020

    • Author(s)
      Fujino Takeshi、Kitamura Toshio
    • Journal Title

      Experimental Hematology

      Volume: 83 Pages: 74-84

    • DOI

      10.1016/j.exphem.2020.01.002

    • Related Report
      2019 Annual Research Report
  • [Presentation] Mutant ASXL1 promotes age-associated progenitor expansion in native hematopoiesis2020

    • Author(s)
      合山進、藤野赳至、浅田修平、北村俊雄
    • Organizer
      Meeting of Leukemic and Hematopoietic Stem cells in Kumamoto
    • Related Report
      2019 Annual Research Report
  • [Presentation] 骨髄異形成症候群(MDS)ではMDS細胞による間葉系幹細胞(MSC)分化抑制が汎血球減少を誘導する2019

    • Author(s)
      北村俊雄
    • Organizer
      第40回日本炎症・再生医学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 白血病治療モデルにおける白血病幹細胞動態と抗腫瘍免疫の解析2019

    • Author(s)
      北村俊雄
    • Organizer
      第40回阿蘇シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Mutant ASXL1 cooperates with homeobox transcription factor HHEX to promote myeloid leukemogenesis2019

    • Author(s)
      竹田玲奈、浅田修平、井上大地、福山朋房、合山進、北村俊雄
    • Organizer
      第81回日本血液学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Opposing effects of acute versus chronic inhibition of p53 on decitabine’s efficacy in myeloid neoplasms2019

    • Author(s)
      田村萌、米澤大志、劉瀟瀟、浅田修平、林康貴、福山朋房、田中洋介、北村俊雄、合山進
    • Organizer
      第81回日本血液学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 変異型ASXL1はAkt/mTORシグナルを活性化し造血幹細胞の生理的な老化を変化させる2019

    • Author(s)
      藤野赳至、合山進、杉浦悠毅、井上大地、土屋秋穂、山崎智、松本明子、佐藤成、浅田修平、森永 浩伸、四方紫織、永瀬玲奈、福山朋房、田中洋介、福島剛、竹田玲奈、山本圭太、本田浩章、西村 栄美、柴田龍弘、Omar Abdel-Wahab、末松誠、北村俊雄
    • Organizer
      第81回日本血液学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マウスモデルを利用した造血器腫瘍の分子生物学的解析と治療への応用の可能性2019

    • Author(s)
      北村俊雄
    • Organizer
      第81回日本血液学会学術集会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Homeobox Transcription Factor HHEX Promotes Myeloid Leukemia In Cooperation With Mutant ASXL12019

    • Author(s)
      竹田玲奈、浅田修平、朴聖俊、横山明彦、金井昭教、Valeria Visconte、Courtney Hershberger、林康孝、米澤大志、田村萌、福山朋房、松本明子、山崎智、中井謙太、稲葉俊哉、柴田龍弘、井上大地、本田浩章、合山進、Jaroslaw P Maciejewski、北村俊雄
    • Organizer
      The 61st American Society of Hematology annual meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mutant ASXL1 Promotes Expansion of the Phenotypic Hematopoietic Stem Cell Compartment2019

    • Author(s)
      Takeshi Fujino, Susumu Goyama, Yuki Sugiura, Daichi Inoue, Satoshi Yamasaki, Akiko Matsumoto, Naru Sato, Hironobu Morinaga, Shiori Shikata, Tomofusa Fukuyama, Yosuke Tanaka, Shuhei Asada, Tsuyoshi Fukushima, Hiroaki Honda, Emi K Nishimura, Tatsuhiro Shibata, Makoto Suematsu ,Toshio Kitamura
    • Organizer
      The 61st American Society of Hematology annual meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Leukemogenic Functions of Mutant ASXL1 Are Regulated By CDK-Mediated Phosphorylation2019

    • Author(s)
      浅田修平、合山進、竹田玲奈、山本圭太、秦(小塚)裕子、尾山正明、井上大地、本田浩章、北村俊雄
    • Organizer
      The 61st American Society of Hematology annual meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2018-07-25   Modified: 2021-02-19  

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