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Elucidating the functional regulation mechanism of the hematopoietic microenvironment (niche) by the shelterin factor

Research Project

Project/Area Number 20H03711
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionKyushu University

Principal Investigator

Arai Fumio  九州大学, 医学研究院, 教授 (90365403)

Co-Investigator(Kenkyū-buntansha) 細川 健太郎  九州大学, 医学研究院, 講師 (90569584)
八尾 尚幸  九州大学, 医学研究院, 助教 (90835282)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
KeywordsPOT1 / 間葉系幹細胞 / 造血幹細胞 / ニッチ / シェルタリン因子 / POT1a / 造血幹細胞ニッチ / シェルタリン / Pot1a
Outline of Research at the Start

造血幹細胞の未分化性維持にはニッチ細胞との相互作用が重要である。加齢に伴う造血機能の低下には、造血幹細胞自体の機能低下に加えて、ニッチ細胞の減少や機能障害が関連すると考えられる。本研究では、骨髄の主要なニッチ細胞である間葉系幹細胞を対象として、造血支持能の維持と老化抑制に対するシェルタリン因子POT1の機能を明らかにする。さらに、シェルタリン因子群の導入により、老化したニッチ細胞の機能を回復させる技術の確立を目指す。本研究の成果は、加齢に伴う造血機能の低下機序の理解につながるとともに、ニッチの老化抑制を介して難治性血液疾患の発症を予防する技術の開発にも貢献できると考えられる。

Outline of Final Research Achievements

This study investigated the function and aging regulation of mesenchymal stem cells (MSCs), the primary niche cells of hematopoietic stem cells (HSCs). We focused on the functional role of the shelterin factor POT1a in regulating MSC. MSC function, which declines with aging, is postulated to be involved in the functional decline of HSCs. This study found that POT1a maintains the stem cell activity of MSCs and their capacity to differentiate into osteoblasts and suppresses their functional decline with aging. In addition, the study showed that loss of POT1a reduced the hematopoietic supportive capacity of MSCs and impaired HSC function. These findings suggest that POT1a is essential in maintaining MSCs and their function as niche cells. The results of this study may be a crucial step toward establishing methods for the prevention and treatment of aging-related hematologic diseases.

Academic Significance and Societal Importance of the Research Achievements

MSCの老化は、骨芽細胞への分化能力の低下を伴い、これが骨粗鬆症などの疾患発症につながる可能性がある。本研究では、老化がMSC内のPOT1aの発現を低下させる一方で、POT1a導入により老化したMSCの骨分化能力が回復することを明らかにした。これらの結果から、POT1が加齢に伴う骨関連疾患の治療ターゲットとなる可能性を示している。さらに、MSCの機能異常はHSCの機能低下、リンパ球の産生減少、そしてそれに続く免疫機能の低下につながる可能性がある。したがって、老化したMSCでPOT1の機能を活性化できれば、それは高齢者の造血機能や免疫機能の回復を可能にする基盤となると考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (19 results)

All 2022 2021 2020 Other

All Int'l Joint Research (6 results) Journal Article (8 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (2 results) Remarks (3 results)

  • [Int'l Joint Research] University of Southampton(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] RWTH Aachen University(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] サウサンプトン大学(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] アーヘン工科大学(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] サウサンプトン大学(英国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] アーヘン工科大学(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Hematopoietic Cell Isolation by Antibody-Free Flow Cytometry in the Zebrafish Embryo2022

    • Author(s)
      Konno K, Kobayashi-Sun J, Arai F, Kobayashi I, Sugiyama D.
    • Journal Title

      Methods Mol Biol.

      Volume: - Pages: 171-180

    • DOI

      10.1007/7651_2021_459

    • ISBN
      9781071624364, 9781071624371
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] MDS cells impair osteolineage differentiation of MSCs via extracellular vesicles to suppress normal hematopoiesis.2022

    • Author(s)
      Hayashi Y, Inoue D, et al.
    • Journal Title

      Cell Reports

      Volume: VOLUME 39, ISSUE 6 Issue: 6 Pages: 110805-110805

    • DOI

      10.1016/j.celrep.2022.110805

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modeling Stem Cell Fates using Non-Markov Processes2021

    • Author(s)
      Stumpf Patrick S.、Arai Fumio、MacArthur Ben D.
    • Journal Title

      Cell Stem Cell

      Volume: 28 Issue: 2 Pages: 187-190

    • DOI

      10.1016/j.stem.2021.01.009

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Machine Learning of Hematopoietic Stem Cell Divisions from Paired Daughter Cell Expression Profiles Reveals Effects of Aging on Self-Renewal2020

    • Author(s)
      Arai Fumio、Stumpf Patrick S.、Ikushima Yoshiko M.、Hosokawa Kentaro、Roch Aline、Lutolf Matthias P.、Suda Toshio、MacArthur Ben D.
    • Journal Title

      Cell Systems

      Volume: 11 Issue: 6 Pages: 640-652

    • DOI

      10.1016/j.cels.2020.11.004

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mitochondrial Protein Synthesis Is Essential for Terminal Differentiation of CD45? TER119?Erythroid and Lymphoid Progenitors2020

    • Author(s)
      Gotoh Kazuhito、Kunisaki Yuya、Mizuguchi Soichi、Setoyama Daiki、Hosokawa Kentaro、Yao Hisayuki、Nakashima Yuya、Yagi Mikako、Uchiumi Takeshi、Semba Yuichiro、Nogami Jumpei、Akashi Koichi、Arai Fumio、Kang Dongchon
    • Journal Title

      iScience

      Volume: 23 Issue: 11 Pages: 101654-101654

    • DOI

      10.1016/j.isci.2020.101654

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A novel method to purify neutrophils enables functional analysis of zebrafish hematopoiesis2020

    • Author(s)
      Konno Katsuhiro、Kulkeaw Kasem、Sasada Manabu、Nii Takenobu、Kaneyuki Ayako、Ishitani Tohru、Arai Fumio、Sugiyama Daisuke
    • Journal Title

      Genes to Cells

      Volume: 25 Issue: 12 Pages: 770-781

    • DOI

      10.1111/gtc.12810

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heterogeneity and ‘memory’ in stem cell populations2020

    • Author(s)
      Stumpf Patrick S、Arai Fumio、MacArthur Ben D
    • Journal Title

      Physical Biology

      Volume: 17 Issue: 6 Pages: 065013-065013

    • DOI

      10.1088/1478-3975/abba85

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Transfer learning efficiently maps bone marrow cell types from mouse to human using single-cell RNA sequencing2020

    • Author(s)
      Stumpf Patrick S.、Du Xin、Imanishi Haruka、Kunisaki Yuya、Semba Yuichiro、Noble Timothy、Smith Rosanna C. G.、Rose-Zerili Matthew、West Jonathan J.、Oreffo Richard O. C.、Farrahi Katayoun、Niranjan Mahesan、Akashi Koichi、Arai Fumio、MacArthur Ben D.
    • Journal Title

      Communications Biology

      Volume: 3 Issue: 1 Pages: 736-746

    • DOI

      10.1038/s42003-020-01463-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] POT1a is essential for mesenchymal niches supporting B cell development2022

    • Author(s)
      Nakashima K, Kunisaki Y, Hosokawa K, Yao H, Yuta R, Akashi K, Ohga S, Arai F
    • Organizer
      第84回 日本血液学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Identification and characterization of integrin α8-positive MSCs located in the endosteal niche2022

    • Author(s)
      Yuta R, Yao H, Hosokawa K, Kunisaki Y, Semba Y, Arai F
    • Organizer
      第84回 日本血液学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Remarks] 九州大学大学院医学研究院幹細胞再生修復医学分野 ホームページ

    • URL

      https://www.lab.med.kyushu-u.ac.jp/scr/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 九州大学大学院医学研究院 幹細胞再生修復医学分野ホームページ

    • URL

      https://www.lab.med.kyushu-u.ac.jp/scr/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 幹細胞再生修復医学分野ホームページ

    • URL

      https://www.lab.med.kyushu-u.ac.jp/scr/

    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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