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単一細胞レベルでの造血幹細胞の対称・非対称分裂の制御機構の解明

Research Project

Project/Area Number 11J04866
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Hematology
Research InstitutionKeio University

Principal Investigator

松元 芳子  慶應義塾大学, 医学研究科, 特別研究員(DC2)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2012: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2011: ¥700,000 (Direct Cost: ¥700,000)
Keywords造血幹細胞 / 細胞分裂 / 対称・非対称分裂 / Tie2/Angiopoietin1 / Tie2/Angipoietin1 / 自己増幅
Research Abstract

本研究は、造血幹細胞および造血幹細胞が分裂して生じるペアとなった娘細胞(Paired Daughter Cells(PDCs)を対象に単一細胞での網羅的定量PCR解析を行い、その結果から、造血幹細胞の分裂パターン制御に寄与する分子・遺伝子を特定することを目的としている。昨年度までの解析結果からは、Tie2/Angpt1シグナルが造血幹細胞の自己複製を伴う対称分裂を促している可能性が示唆された。
本年度は、遺伝子発現プロファイルの解析手法に高度な学習モデルであるSupport Vector Machine(SVM)classifierを取り入れた。この手法では、まずSVM classifierに造血幹細胞および前駆細胞の遺伝子発現プロファイルを入力してその特徴を学習させる。その上で娘細胞の遺伝子発現プロファイルを入力すると、親細胞の遺伝子発現プロファイルとの比較により、各々の娘細胞を「幹細胞」か「前駆細胞」のいずれかに分類することができる。SVMC Classifierによる解析の結果、培養液にAngpt1が添加されていることで、造血幹細胞が「娘幹細胞」を2つ生じる対称分裂を行う割合が増えることが明らかとなった。さらに今年度は、プラスチック細胞培養プレートに比べ柔らかく保水性に優れた、Polyethylene glycol(PEG)hydrogel microwell上で造血幹細胞を培養しPDCアッセイを行った。そして娘細胞の遺伝子発現プロファイルについてSVM classifierによる解析を進めたところ、PEG hygdrogel microwell上で培養された造血幹細胞は、「娘幹細胞」を2つ生じる対称分裂をする割合が高く、この割合は培養メディウムにAngpt1を添加することでさらに上昇することが明らかとなった。以上の結果は、培養条件を骨髄ニッチに近づけることで、造血幹細胞増幅できる可能性を示唆している。

Report

(2 results)
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (16 results)

All 2013 2012 2011 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (7 results) Book (3 results) Remarks (2 results)

  • [Journal Article] Prostaglandin E2 regulates murine hematopoietic stem/progenitorcells directly via EP4 receptor and indirectly through mesenchymal progenitor cells.2013

    • Author(s)
      Ikushima YM. Arai F, Hosokawa K, Toyama H, Takubo K, Furuyashiki T, Narumiya S, Suda T
    • Journal Title

      Blood

      Volume: 121(11) Issue: 11 Pages: 1995-2007

    • DOI

      10.1182/blood-2012-06-437889

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhanced Angptl/Tie2 signaling affects the differentiation and long-term repopulation ability of hematopoietic stem cells.2013

    • Author(s)
      Ikushima YM. Arai F, Nakamura Y, Hosokawa K, Kubota Y, Hirashima M, Toyama H, Suda T
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 130(1) Issue: 1 Pages: 20-25

    • DOI

      10.1016/j.bbrc.2012.11.002

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] N-cadherin(+) HSCs in fetal liver exhibit higher long-term bone marrow reconstitution activity than N-cadherin(-) HSCs.雑 誌 名2012

    • Author(s)
      Toyama H, Arai F, Hosokawa K, lkushima YM. Suda T
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 428(3) Issue: 3 Pages: 354-359

    • DOI

      10.1016/j.bbrc.2012.10.058

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The role of N-cadherin-mediated cell adhesion in the regulation of hematopoietic stem cells in the bone marrow niche2012

    • Author(s)
      F Arai, K Hosokawa, H Toyama, Y Matsumoto, T Suda
    • Journal Title

      Hematopoietic Stem Cells VIII.Ann.N.Y.Acad.Sci

      Volume: VIII(in print)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] Prostaglandin E2 regulates hematopoietic stem/progenitor cells directly through EP4 receptor and indirectly by mesenchymal progenitor cells.2012

    • Author(s)
      Matsumoto Y, Arai F, Hosokawa K, Toyama H, Suda T
    • Organizer
      第74回日本血液学会学術集会
    • Place of Presentation
      京都
    • Year and Date
      2012-10-20
    • Related Report
      2012 Annual Research Report
  • [Presentation] Prostaglandin E2 regulates hematopoietic stem/progenitor cells directly through EP4 receptor and indirectly by mesenchymal progenitor cells.2012

    • Author(s)
      Matsumoto Y, Arai F, Hosokawa K, Toyam a H, Suda T
    • Organizer
      41st Annual Scientific Meeting of Society for Hematology and Stem Cells
    • Place of Presentation
      Amsterdam, Holland
    • Year and Date
      2012-08-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] EP4 receptor dependent direct and independent indirect effects of prost aglandin E2 in the regulation of adult hematopoietic stem/progenitor eells.2012

    • Author(s)
      Matsumoto Y, Arai F, Suda T
    • Organizer
      l0^<th> Annual Meeting of International Society for Stem Cell Research
    • Place of Presentation
      横浜
    • Year and Date
      2012-06-15
    • Related Report
      2012 Annual Research Report
  • [Presentation] EP4 receptor-dependent direct and -independent indirect effects of prostaglandin E2 in the regulation of adult hematopoietic stem/progenitor cells2012

    • Author(s)
      Y Matsumoto, F Arai, T Suda
    • Organizer
      International Society for Stem Cell Research (ISSCR) 2012 Annual Meeting
    • Place of Presentation
      パシフィコ横浜、横浜(発表確定)
    • Related Report
      2011 Annual Research Report
  • [Presentation] Prostaglandin E2 signaling through the EP4 receptor regulates the proliferation of hematopoietic stem/progenitor cells under stress conditions2011

    • Author(s)
      F Arai, Y Matsumoto, T Suda
    • Organizer
      The American Society of Hematology (ASH) Annual Meeting and Exposition
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2011-12-11
    • Related Report
      2011 Annual Research Report
  • [Presentation] 造血幹細胞の分裂制御におけるTie2/Angiopoietin-1シグナルの機能解析2011

    • Author(s)
      松元芳子, 新井文用, B.D.MacArthur, 中村由香, 細川健太郎, 外山弘文, 須田年生
    • Organizer
      第73回日本血液学会学術集会
    • Place of Presentation
      名古屋国際会議場、名古屋
    • Year and Date
      2011-10-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] Function of Tie2/Angiopoietin-1 signaling in the regulation of long-term hematopoietic stem cell division patterns2011

    • Author(s)
      Y Matsumoto, F Arai, B.D.MacArthur, Y Nakamura, K Hosokawa, H Toyama, T Suda
    • Organizer
      Society for Hematology and Stem Cells (ISEH) 40th Annual Scientific Meeting
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      2011-08-26
    • Related Report
      2011 Annual Research Report
  • [Book] New Frontiers of Network Analysis in Systems Biology Ma'ayan Avi, Macarthar Ben D. (Eds.) Gene expression profiling of single cells.2012

    • Author(s)
      Arai F, Hosokawa K, Matsumoto Y, Toyama H, Suda T
    • Publisher
      Springer
    • Related Report
      2012 Annual Research Report
  • [Book] Adult Stem Cells : Biology and Methods of Analysis (editor : D.G.Phinney)第2章Maintenance of Adult Stem Cells : Role of the Stem Cell Niche2011

    • Author(s)
      Y Matsumoto, H Iwasaki, T Suda
    • Publisher
      Springer
    • Related Report
      2011 Annual Research Report
  • [Book] Network analysis in Systems Biology (editor : A Ma'ayan and B.D.MacArthur) Chapter : Gene expression profiling of single cells

    • Author(s)
      F Arai, K Hosokawa, Y Matsumoto, H Toyama, T Suda
    • Publisher
      Springer(印刷中)
    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.celldiff.med.keio.ac.jp/index2.html

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://web.sc.itc.keio.ac.jp/celldiff/index2.html

    • Related Report
      2011 Annual Research Report

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Published: 2011-12-12   Modified: 2024-03-26  

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