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抗ウイルス免疫応答における樹状細胞サブセット特異的活性化機構の解明

Research Project

Project/Area Number 19041070
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

改正 恒康  The Institute of Physical and Chemical Research, 生体防御研究チーム, チームリーダー (60224325)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 2008: ¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 2007: ¥6,800,000 (Direct Cost: ¥6,800,000)
Keywords樹状細胞 / Toll様受容体 / 免疫アジュバント / I型インターフェロン / 樹状細胞サブセット
Research Abstract

感染応答には、樹状細胞による核酸成分認識機構、特にI型インターフェロン(IFN)産生誘導機構が必須である。形質細胞様樹状細胞(PDC)と呼ばれる樹状細胞サブセットは、Toll様受容体(TLR)の中では、核酸成分を認識するTLR7, TLR9を選択的に発現しており、これらのTLR刺激により大量のI型IFN(IFN-α、IFN-β)を産生する。我々は、このI型IFNの産生誘導に、セリンスレオニンキナーゼIKKαが必須であること、IKKαは、転写因子IRF-7と会合し、リン酸化し、活性化させることにより、機能していることを明らかにした。さらに、PDC以外の樹状細胞(cDC)においても、IKKαがTLR7/9刺激によるIFN-β産生誘導に関与している一方、炎症性サイトカイン産生誘導には関与していないことを、ELISAおよびノザンブロットにより明らかにした。しかし、TLR4やRIG-I様受容体を介したIFN-β産生誘導にはIKKαは必須ではなかった。また、いくつかの遺伝子欠損マウスの解析から、IKKαは、樹状細胞サブセットを問わず、TLR7/9刺激によるI型IFN産生に必須の唯一の機能分子ではないかと考えられた。cDCにおけるIKKαの標的分子を現在解析中である。また、PDC優位に発現する遺伝子群の中から、I型IFNプロモーターを活性化すると考えられる遺伝子を同定することができたので、その分子の解析も進めている。

Report

(2 results)
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (43 results)

All 2008 2007 Other

All Journal Article (17 results) (of which Peer Reviewed: 11 results) Presentation (19 results) Book (2 results) Remarks (4 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Type I interferon production by nucleic acid-stimulated dendritic cells2008

    • Author(s)
      改正恒康
    • Journal Title

      Front. Biosci. 13

      Pages: 6034-6042

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turning NF-κB and IRFs on and off in DC2008

    • Author(s)
      改正恒康
    • Journal Title

      Trends Immunol. 29

      Pages: 329-336

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nucleic acid sensing Toll-like receptors in dendritic cells2008

    • Author(s)
      星野克明
    • Journal Title

      Curr. Opin. Immunol. 20

      Pages: 408-413

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Host-pathogen interactions(Editorial)2008

    • Author(s)
      改正恒康
    • Journal Title

      Curr. Opin. Immunol. 20

      Pages: 369-370

    • Related Report
      2008 Annual Research Report
  • [Journal Article] PDC-TREM, a plasmacytoid dendritic cell-specific receptor, is responsible for augmented production of type I interferon2008

    • Author(s)
      渡会浩志
    • Journal Title

      Proc. Natl. Acad. Sci. USA 105

      Pages: 2993-2998

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A critical link between Toll-like receptor 3 and type II interferon signaling pathways in antiviral innate immunity2008

    • Author(s)
      Hideo Negishi
    • Journal Title

      Proc. Natl. Acad. Sci. USA 105

      Pages: 20446-20451

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 形質細胞様樹状細胞によるI型インターフェロン産生機序2008

    • Author(s)
      杉山孝弘
    • Journal Title

      臨床免疫・アレルギー科 49

      Pages: 470-476

    • Related Report
      2008 Annual Research Report
  • [Journal Article] 樹状細胞における核酸系免疫アジュバント認識機構とその病理的意義2008

    • Author(s)
      矢野貴公
    • Journal Title

      医学のあゆみ 227

      Pages: 398-403

    • Related Report
      2008 Annual Research Report
  • [Journal Article] 核酸系免疫アジュバントによる樹状細胞活性化機構とその病理的意義2008

    • Author(s)
      改正恒康
    • Journal Title

      実験医学増刊樹状細胞による免疫制御と臨床応用 26

      Pages: 59-64

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Immunoadjubant effects of polyadenylic-polyuridylic acids through TLR3 and TLR72008

    • Author(s)
      T. Sugiyama
    • Journal Title

      Int. Immunol 20

      Pages: 1-9

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Toll-like receptor signaling is impaired in dendritic cells from patients with X-linked agammagloblinemia2008

    • Author(s)
      H. Taneichi
    • Journal Title

      Clin. Immunol. 126

      Pages: 148-154

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] TLRシグナルにおけるIKKαの役割2007

    • Author(s)
      星野 克明
    • Journal Title

      炎症と免疫 15

      Pages: 58-64

    • Related Report
      2007 Annual Research Report
  • [Journal Article] TLRシグナルにおけるIKKファミリーの役割-IKKαを中心として2007

    • Author(s)
      星野 克明
    • Journal Title

      Alnnual Review 免疫2008

      Pages: 61-69

    • Related Report
      2007 Annual Research Report
  • [Journal Article] PDLIM2-mediated termination of transcription factor NF-kB activation by intranuclear sequestration and degradation of the p65 subunit2007

    • Author(s)
      T. Tanaka
    • Journal Title

      Nature Immunol. 8

      Pages: 584-591

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct extracellular interaction between the early secreted antigen ESAT-6 of mycobacterium tuberculosis and TLR2 inhibits TLR signaling in macrophsages2007

    • Author(s)
      S. K. Pathak
    • Journal Title

      Nature Immunol. 8

      Pages: 610-618

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The C/EBPβ Isoform 24-kDa LAP is responsible for NF-IL-6-mediated gene induction in activated macrophsges, but is not essential for intracellular bacteria killing2007

    • Author(s)
      S. Uematsu
    • Journal Title

      J. Immunol. 179

      Pages: 5378-5386

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] MyD88 but not TLR2,4 or 9 is essential for IL-12 induction by Lactic Acid Bacteria2007

    • Author(s)
      S. Ichikawa
    • Journal Title

      Biosci, Biotechnol. Biochem. 71

      Pages: 3026-3032

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Critical roles of IKKa in dendritic cell subsets2008

    • Author(s)
      改正恒康
    • Organizer
      The 10th International Symposium on Dendritic Cells, DC2008
    • Place of Presentation
      神戸
    • Year and Date
      2008-10-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] Molecular mechanism of type I interferon production from plasmacytoid dendritic cell2008

    • Author(s)
      改正恒康
    • Organizer
      The Awaji International Forum on Infection and Immunitv
    • Place of Presentation
      淡路島
    • Year and Date
      2008-09-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] Training course 2(Immunology)2008

    • Author(s)
      改正恒康
    • Organizer
      The Awaji International Forum on Infection and Immunity
    • Place of Presentation
      淡路島
    • Year and Date
      2008-09-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] 自己免疫疾患における核酸系免疫アジュバント刺激樹状細胞の意義2008

    • Author(s)
      改正恒康
    • Organizer
      第52回日本リウマチ学会総会・学術集会
    • Place of Presentation
      札幌
    • Year and Date
      2008-04-23
    • Related Report
      2008 Annual Research Report
  • [Presentation] PDLIM2 and HSP70 cooperatively terminate Toll-like receptor-mediated NF-κB activation2008

    • Author(s)
      田中貴志
    • Organizer
      The 10th International Symposium on Dendritic Cells, DC2008
    • Place of Presentation
      神戸
    • Related Report
      2008 Annual Research Report
  • [Presentation] Cholera toxin can induce arginase I gene expression in plasmacytoid dendritic cell2008

    • Author(s)
      佐々木泉
    • Organizer
      The 10th International Symposium on Dendritic Cells, DC2008
    • Place of Presentation
      神戸
    • Related Report
      2008 Annual Research Report
  • [Presentation] PDC-TREM, a new plasmacytoid dendritic cell receptor, is responsible for augmentation of type I interferon production2008

    • Author(s)
      渡会浩志
    • Organizer
      The 10th International Symposium on Dendritic Cells, DC2008
    • Place of Presentation
      神戸
    • Related Report
      2008 Annual Research Report
  • [Presentation] 2本鎖RNApolyAUは主にTLR3を介してCD8陽性T細胞応答を誘導する/Double-stranded RNA, a polyadellyhc : polyuridyhc acid, can induce CD8 positive T cell responses mainly through TLR32008

    • Author(s)
      山崎千尋
    • 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] 共生細菌によるTLR3依存的なIFN-β産生とTh1免疫応答/TLR3-dependent IFN-β production induced by commensal bacteria2008

    • Author(s)
      Akemi Kosaka
    • 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] PDLIM2欠損マウスにおける皮膚創傷治癒反応の亢進/Enhanced skin wound healing in PDLIM 2-deficient mice2008

    • Author(s)
      田中貴志
    • 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] Cholera toxin can induce arginase I gene expression in plasmacytoid dendritic cell2008

    • Author(s)
      佐々木泉
    • 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] ユビキチンE3リガーゼPDLIM2によるTGF-βシグナル伝達の制御/Ubiquitin E3 ligase PDLIM2 regulates the TGF-βmediated signaling pathway2008

    • Author(s)
      Yu Yamamoto
    • 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] PDLIM2依存性NF-κB不活性化機構は熱ショック蛋白質群によって制御される2007

    • Author(s)
      田中 貴志
    • Organizer
      第37回日本免疫学会総会・学術集会
    • Place of Presentation
      東京
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] マウス樹状細胞サブセットにおけるI型インターフェロン産生誘導機構の解析2007

    • Author(s)
      星野 克明
    • Organizer
      第37回日本免疫学会総会・学術集会
    • Place of Presentation
      東京
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] EBPbのアイソフォームの34kDaLAPは、活性化マクロファージにおいてNF-IL6を介する遺伝子発現には必須であるが、細胞内の殺菌には必須ではない2007

    • Author(s)
      植松 智
    • Organizer
      第37回日本免疫学会総会・学術集会
    • Place of Presentation
      東京
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] IκB Kinase-α as a Critical Regulator for Dendritic Cell Function2007

    • Author(s)
      T. Kaisho
    • Organizer
      The 20th Naito Conference "Innate Immunity in medicine and Biology [III]"
    • Place of Presentation
      神奈川
    • Year and Date
      2007-10-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] 樹状細胞におけるIKKαの機能的意義2007

    • Author(s)
      改正 恒康
    • Organizer
      第28回日本炎症・再生医学会
    • Place of Presentation
      東京
    • Year and Date
      2007-08-02
    • Related Report
      2007 Annual Research Report
  • [Presentation] Immunological phenotype of pattern recognition receptor defects-from knockout mice to human immune disorders2007

    • Author(s)
      改正 恒康
    • Organizer
      The 2nd RCAI-JSI Workshop
    • Place of Presentation
      横浜
    • Year and Date
      2007-05-25
    • Related Report
      2007 Annual Research Report
  • [Presentation] Type I interferon induction mechanism in dendritic cells2007

    • Author(s)
      T. Kaisho
    • Organizer
      RCAI-MPI Joint Workshop
    • Place of Presentation
      ドイツ(ベルリン)
    • Year and Date
      2007-04-16
    • Related Report
      2007 Annual Research Report
  • [Book] Nucleic Asids in Innate Immunity2008

    • Author(s)
      Tsunevasu. Kaisho
    • Total Pages
      16
    • Publisher
      CEC Press, USA
    • Related Report
      2008 Annual Research Report
  • [Book] RHEUMATOLOGY2008

    • Author(s)
      T. Kaisho
    • Total Pages
      8
    • Publisher
      MOSBY ELSEVIER
    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://www.rcai.riken.jp/group/host/index.html

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.riken.jp/r-world/info/release/press/2007/070430/index.html

    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://www.rcai.riken.jp/jpn/group/host/index.html

    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://web.rcai.riken.jp/en/labo/host/

    • Related Report
      2007 Annual Research Report
  • [Patent(Industrial Property Rights)] I型IFNの産生阻害剤、及びその探索方法2008

    • Inventor(s)
      改正恒康, 星野克明, 杉山孝弘
    • Industrial Property Rights Holder
      独立行政法人理化学研究所
    • Filing Date
      2008-08-28
    • Related Report
      2008 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2018-03-28  

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