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

The mechanisms of regulation of oxygen concentration to maintain hematopoiesis in bone marrow

Research Project

Project/Area Number 21K08383
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionNational Center for Global Health and Medicine

Principal Investigator

Morikawa Takayuki  国立研究開発法人国立国際医療研究センター, その他部局等, 研究員 (80465012)

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: ¥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)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords造血幹細胞 / 酸素
Outline of Research at the Start

造血幹細胞 (HSC) 周囲の酸素環境はその幹細胞性において重要な因子のひとつであることが知られているが、HSCの存在する骨髄の酸素分圧の実態と、それがどのように形成・維持されているかは明らかでない。本申請課題では骨髄の生理的低酸素環境の実態を酸素分圧の生体イメージングにより明らかにし、骨髄で産生される血管作動性因子による局所酸素分圧調節のメカニズムを探る。さらにこの酸素分圧調節機構のHSCの遊走能の維持における役割について精査することで、骨髄の酸素環境の制御システムが造血を支える新たな一因子となりえるか検証する。

Outline of Final Research Achievements

While adequate oxygen concentration around hematopoietic stem cells (HSCs) is one of the important factors for maintaining HSC stemness, it is unclear how local oxygen concentration could be maintained in bone marrow. To reveal the regulatory mechanism of oxygen levels, we used intravital oxygen imaging technology and showed that the nitric oxide signaling pathway maintains the local oxygen concentration of bone marrow. Furthermore, we found that HSC motility depends on NO-mediated oxygen concentration in the bone marrow.

Academic Significance and Societal Importance of the Research Achievements

造血組織である骨髄から末梢血へのHSCの遊走は感染時の生体防御などにおいて重要な役割を果たしているほか、末梢血造血幹細胞移植では移植するHSCが十分量得られるか否かを左右する重要な要素のひとつと考えられる。この遊走の機序に関して本研究では骨髄の酸素環境の制御系がHSCの遊走能に大きく関与することを新たに示した点などにおいて学術的意義を持つと考えらえる。また、本研究成果から得られた知見をもとに骨髄の酸素環境及びHSCの遊走能への人為的な介入を実現させることで、年々増加の傾向がみられる末梢血幹細胞移植が適応となる造血器疾患等の治療成績向上の一助になるなどの社会的意義に結びつく可能性が考えられる。

Report

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

    (5 results)

All 2022 2021

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Quantitative Analysis of Sympathetic and Nociceptive Innervation Across Bone Marrow Regions in Mice2022

    • Author(s)
      Fujita Shinya、Morikawa Takayuki、Tamaki Shinpei、Sezaki Maiko、Takizawa Hitoshi、Okamoto Shinichiro、Kataoka Keisuke、Takubo Keiyo
    • Journal Title

      Experimental Hematology

      Volume: 112-113 Pages: 44-59

    • DOI

      10.1016/j.exphem.2022.07.297

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] p38α plays differential roles in hematopoietic stem cell activity dependent on aging contexts2021

    • Author(s)
      Sorimachi Yuriko、Karigane Daiki、Ootomo Yukako、Kobayashi Hiroshi、Morikawa Takayuki、Otsu Kinya、Kubota Yoshiaki、Okamoto Shinichiro、Goda Nobuhito、Takubo Keiyo
    • Journal Title

      Journal of Biological Chemistry

      Volume: 296 Pages: 100563-100563

    • DOI

      10.1016/j.jbc.2021.100563

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Intravital imaging and manipulation of bone marrow vasculature and intracellular oxygenation2021

    • Author(s)
      Takayuki Morikawa and Keiyo Takubo
    • Organizer
      The International Society for Experimental Hematology 50th Annual Scientific Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Nitric oxide-dependent vasodilation maintains the physiological oxygen levels in bone marrow and allows local crawling of hematopoietic stem cells2021

    • Author(s)
      Takayuki Morikawa and Keiyo Takubo
    • Organizer
      The International Society for Experimental Hematology 50th Annual Scientific Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] PHYSIOLOGICAL HYPOXIA MAINTAINED BY NITRIC OXIDE SIGNALING REGULATES LOCAL CRAWLING OF HEMATOPOIETIC STEM CELLS2021

    • Author(s)
      Takayuki Morikawa, Shinya Fujita and Keiyo Takubo
    • Organizer
      International Society for Stem Cell Research / The Japanese Society for Regenerative Medicine 2021 Tokyo International Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi