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Wnt/β-Cateninシグナルを介したCD4T細胞自己応答性の制御

Research Project

Project/Area Number 20060003
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionChiba University

Principal Investigator

山下 政克  Chiba University, 大学院・医学研究院, 准教授 (00311605)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥9,600,000 (Direct Cost: ¥9,600,000)
Fiscal Year 2009: ¥4,800,000 (Direct Cost: ¥4,800,000)
Fiscal Year 2008: ¥4,800,000 (Direct Cost: ¥4,800,000)
Keywordsβ-catenin / Wnt / T細胞 / T細胞抗原受容体 / アレルギー / Th17細胞 / 炎症
Research Abstract

本年度の一連の研究で、CD4T細胞ではTGFb/IL-6刺激によってb-cateninシグナルが活性化することを見出した。TGFb/IL-6はTh17細胞分化に必要なサイトカインであることから、Th細胞サブセット間でのb-cateninシグナルの標的分子の発現を検討したところ、Th17細胞においてその発現が最も高く、次いでiTreg細胞で高いことが分かった。さらに、活性化b-cateninをTh2細胞に強制発現することで、Th17細胞分化のマスター転写因子であるRORaとRORgtの発現が誘導されることが明らかとなった。これらの結果は、Th17細胞分化にb-cateninシグナルが非常に重要な役割を担っている可能性を示唆している。
T細胞において、b-cateninは転写因子Tcf7やLef1と結合してその作用を発揮すると考えられている。そこで、ドミナントネガティブTcf7をTh17細胞分化条件下のCD4T細胞に導入し、Tcf7/Lef1/b-catenin複合体のTh17細胞分化における役割の検討を行ったが、驚いたことにTh17細胞分化およびRORa/RORgtの発現は、ドミナントネガティブTcf7の導入では抑制されなかった。さらに、siRNAでTcf7をノックダウンしてTh17細胞分化に対する影響を解析したが、それでも抑制作用は認められなかった。
以上の結果から、Th17細胞にはTcf7/Lef1以外にもb-cateninと結合して転写を活性化できる転写因子が存在すると考え、現在その分子を検索中である。

Report

(2 results)
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (26 results)

All 2009 2008

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (13 results) Book (1 results)

  • [Journal Article] CD69 controls the pathogenesis of allergic airway inflammation2009

    • Author(s)
      Miki, H.T.
    • Journal Title

      J.Immunol. 183

      Pages: 8203-8215

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Runx3 transcription factor augments T_h1 and down-modulates T_h2 phenotypes by interacting with and attenuating GATA32009

    • Author(s)
      Kohu, K.
    • Journal Title

      J.Immunol. 183

      Pages: 7817-7824

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bmi1 regulates memory Th cell survival via repression of the Noxa gene2009

    • Author(s)
      Yamashita, M.
    • Journal Title

      Proceedings of the 2^<nd> European Congress of Immunology

      Pages: 157-159

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhanced Th2 cell differentiation and allergen-induced airway inflammation in Zfp35-deficient mice2009

    • Author(s)
      Kitajima, M.
    • Journal Title

      J.Immunol. 183

      Pages: 5388-5396

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Critical role of the Polycomb and Trithorax complexes in the maintenance of CD4 T cell memory2009

    • Author(s)
      Nakayama, T.
    • Journal Title

      Semin.Immunol. 21

      Pages: 78-83

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gfi1-mediated stabilization of GATA3 protein is required for Th2 Cell differentiation2008

    • Author(s)
      Shinnakasu, R.
    • Journal Title

      J. Biol. Chem. 283

      Pages: 28216-28225

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lymphoid enhancer factor interacts with GATA-3 and controls its function in T helper type 2 cells2008

    • Author(s)
      Hossain, M.B.
    • Journal Title

      Immunology 125

      Pages: 377-386

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Repressor of GATA regulates T_H2-driven allergic airway inflammation and airway hyperresponsiveness2008

    • Author(s)
      Hirahara, K.
    • Journal Title

      J. Allergy Clin. Immunol. 122

      Pages: 512-520

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Human T_hl differentiation induced by lipoarabinomannan/lipomannan from Mycobacterium bovis BCG Tokyo-1722008

    • Author(s)
      Ito, T.
    • Journal Title

      Int. Immunol. 20

      Pages: 849-860

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Initiation and maintenance of Th2 cell identity. Truncated title : Regulation of Th2 responses2008

    • Author(s)
      Nakayama, T.
    • Journal Title

      Curr. Opin. Immunol. 20

      Pages: 265-271

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bmil regulates memory CD4 T cell survival via repression of the Noxa gene2008

    • Author(s)
      Yamashita, M.
    • Journal Title

      J. Exp. Med. 205

      Pages: 1109-1120

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Progress in allergy signal research on mast cells : Regulation of allergic airway inflammation through toll-like receptor 4-mediated modification of mast cell function.2008

    • Author(s)
      Yamashita, M.
    • Journal Title

      J. Pharmacol. Sci. 106

      Pages: 332-335

    • NAID

      10024318683

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Regulation of GATA3-induced immune responses by the transcription factor Sox42009

    • Author(s)
      山下政克
    • Organizer
      第32回日本分子生物学会年会
    • Place of Presentation
      横浜
    • Year and Date
      2009-12-12
    • Related Report
      2009 Annual Research Report
  • [Presentation] Regulation of GATA3-induced immune responses by the transcription factor Sox42009

    • Author(s)
      山下政克
    • Organizer
      第39回日本免疫学会総会・学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2009-12-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Sox4 regulates GATA3-induced Th2 cell differentiation and Th2-dependent inflammatory responses2009

    • Author(s)
      桑原誠
    • Organizer
      第39回日本免疫学会総会・学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2009-12-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] Transcriptional factor MLL regulates IL-4 mediated anti-tumor response by tumor specific memory Th2 cells2009

    • Author(s)
      細川裕之
    • Organizer
      第39回日本免疫学会総会・学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2009-12-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] Apolipoprotein A-II protects from ConcanavalinA-induced hepatitis through the inhibition of CD4 T cell activation2009

    • Author(s)
      山下潤二
    • Organizer
      第39回日本免疫学会総会・学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2009-12-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] Regulation of memory Th cell survival and function by the Polycomb and Trithorax group gene products2009

    • Author(s)
      Nakayama, T.
    • Organizer
      The 5^<th> International Workshop of Kyoto T cell Conference 2009
    • Place of Presentation
      京都
    • Year and Date
      2009-06-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Crucial role for CD69 in the pathogenesis of Th2-deriven allergic airway inflammation2008

    • Author(s)
      Iwamura, C.
    • Organizer
      第38回日本免疫学会総会・学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] Gfi1はGATA3蛋白質の安定化を介してTh2細胞分化を制御する/Gfi1-mediated stabilization of GATA3 protein is required for Th2 cell differentiation2008

    • Author(s)
      Shinnakasu, R.
    • Organizer
      第38回日本免疫学会総会・学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] Lymphoid enhancer factorl(LEF1)はGATA3に会合しその機能を調節する/Lymphoid enhancer factor interacts with GATA3 and controlsitsfunction in The1Der type2 cells2008

    • Author(s)
      細川裕之
    • Organizer
      第38回日本免疫学会総会・学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] Polycomb group protein Ring1B regulates Th2-dependent airway inflammation through the control of Th2 cell differentiation and apoptosis2008

    • Author(s)
      Suzuki, A.
    • Organizer
      第38回日本免疫学会総会・学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] BCGTokyo-172から分離精製したLAM/LM分子によるHuman Th1分化誘導機構/Human Thl differentiation induced by lipoarabinomannan/liomannan from Mcobacterium bovis BCG Toko-1722008

    • Author(s)
      Ito, T.
    • Organizer
      第38回日本免疫学会総会・学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] BmilはNoxa遺伝子の発現抑制を介してメモリーTh細胞の生存を制御する/Bmil regulates memory CD4 Tcell survival via repression of the Noxa gene2008

    • Author(s)
      Yamashita, M.
    • Organizer
      第38回日本免疫学会総会・学術集会
    • Place of Presentation
      京都
    • Related Report
      2008 Annual Research Report
  • [Presentation] Gfi1はGATA3蛋白質の安定化を介してTh2細胞分化を制御する2008

    • Author(s)
      山下政克
    • Organizer
      第31回日本分子生物学会・第81回日本生化学会合同大会
    • Place of Presentation
      神戸
    • Related Report
      2008 Annual Research Report
  • [Book] 免疫研究最前線20072008

    • Author(s)
      山下政克
    • Publisher
      羊土社
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2018-03-28  

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