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Mechanism Underlying Hematopoietic Stem Cell Aging via the Disruption of Multilayered Chromatin Structure

Research Project

Project/Area Number 21K06011
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43010:Molecular biology-related
Research InstitutionChiba University

Principal Investigator

Nakanishi Mio  千葉大学, 大学院医学研究院, 講師 (70534353)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords老化 / 造血幹細胞 / 分化バイアス / 休止 / エピジェネティクス / アポトーシス / 幹細胞老化 / クロマチン構造 / クロマチン高次構造 / クロマチンループ
Outline of Research at the Start

本研究では、様々なスケールのエピジェネティック変化を高感度かつ統合的に解析する事により、炎症性老化の根源となる造血幹細胞(HSC)のクロマチン構造破綻機序を解明する。研究代表者がヒストン修飾解析を標的に確立した新規高感度エピジェネティクス解析法を、転写因子やクロマチンの高次構造解析へと応用し、従来は捉えられなかった幹細胞における様々なスケールのクロマチン構造変化を明らかにする。これにより全身の炎症性老化の引き金となる、HSCの多層的なクロマチン構造破綻という未知の老化メカニズムを解明する。

Outline of Final Research Achievements

This study aimed to elucidate the unknown intrinsic mechanisms of aging in hematopoietic stem cells (HSCs) that cause systemic inflammatory aging and to identify its inducers. To achieve this, the research employed a highly sensitive epigenetic modification analysis method to examine HSCs from young and old mice. It found that key characteristics of HSC aging, such as differentiation bias towards certain cell lineages (myeloid bias), maintenance of quiescence, and the survival of mutated cells, are all underpinned by epigenetic changes. Additionally, the study demonstrated the association between the loss of expression of several blood differentiation-related transcription factors and aging in HSCs.

Academic Significance and Societal Importance of the Research Achievements

本研究では造血幹細胞老化の主要な特徴である分化の偏り(ミエロイドバイアス)や休止維持・変異細胞の生存がエピジェネティック変化を基盤とすることを示した。さらにこのようなエピジェネティック変化と分化制御転写因子との関連を示唆した。これらは将来的な抗老化医療の重要なターゲットをもたらすものである。今後本研究の成果を基盤として、さらに多細胞間の造血レジリエンス制御変容を理解することにより、未知の老化メカニズム解明が進むことが強く期待される。

Report

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

    (11 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (4 results) (of which Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] McMaster University/University of Ottawa/University of Calgary(カナダ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] McMaster University(カナダ)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Real-time imaging of human endothelial-to-hematopoietic transition <i>in vitro</i> using pluripotent stem cell derived hemogenic endothelium2024

    • Author(s)
      Yoneda Yuriko、Kato Hisaya、Maezawa Yoshiro、Yokote Koutaro、Nakanishi Mio
    • Journal Title

      Biophysics and Physicobiology

      Volume: 21 Issue: Supplemental Pages: n/a

    • DOI

      10.2142/biophysico.bppb-v21.s015

    • ISSN
      2189-4779
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chemical genomics reveals targetable programs of human cancers rooted in pluripotency2023

    • Author(s)
      Orlando Luca、Benoit Yannick D.、Reid Jennifer C.、Nakanishi Mio、Boyd Allison L.、Garc?a-Rodriguez Juan L.、Tanasijevic Borko、Doyle Meaghan S.、Luchman Artee、Restall Ian J.、Bergin Christopher J.、Masibag Angelique N.、Aslostovar Lili、Di Lu Justin、Laronde Sarah、Collins Tony J.、Weiss Samuel、Bhatia Mickie
    • Journal Title

      Cell Chemical Biology

      Volume: 30 Issue: 7 Pages: 780-794.e8

    • DOI

      10.1016/j.chembiol.2023.06.004

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Developing CRISPR/Cas9-Mediated Fluorescent Reporter Human Pluripotent Stem-Cell Lines for High-Content Screening2022

    • Author(s)
      Vojnits Kinga、Nakanishi Mio、Porras Deanna、Kim Yeonjoon、Feng Zhuohang、Golubeva Diana、Bhatia Mick
    • Journal Title

      Molecules

      Volume: 27 Issue: 8 Pages: 2434-2434

    • DOI

      10.3390/molecules27082434

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 造血発生環境と内在性プログラムの制御による機能的造血幹前駆細胞への成熟化誘導2023

    • Author(s)
      中西未央
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 胎児肝臓由来の成熟化因子同定による造血幹前駆細胞の試験管内誘導2023

    • Author(s)
      中西未央
    • Organizer
      第85回日本血液学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Plasticity of lineage-restricted progenitors: potential key mechanism underlying homeostasis, regeneration, and ageing of the somatic stem cells2022

    • Author(s)
      中西未央
    • Organizer
      第55回日本発生生物学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Homeostasis of stem cell populations maintained by rare de-differentiating subsets2021

    • Author(s)
      Mio Nakanishi
    • Organizer
      The 59th Annual Meeting of the Biophysical Society of Japan
    • Related Report
      2021 Research-status Report
    • Invited
  • [Remarks] 中西 未央 - 千葉大学 IMO

    • URL

      https://imo.chiba-u.jp/academic/young/emergence/2021/nakanishi.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] 中西 未央 (Mio Nakanishi) - researchmap

    • URL

      https://researchmap.jp/mio_nakanishi

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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