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2010 Fiscal Year Annual Research Report

真菌感染防御におけるC型レクチンの役割

Publicly Offered Research

Project AreaMatrix of Infection Phenomena
Project/Area Number 21022016
Research InstitutionChiba University

Principal Investigator

西城 忍  千葉大学, 真菌医学研究センター, 特任准教授 (60396877)

Co-Investigator(Kenkyū-buntansha) 岩倉 洋一郎  東京大学, 医科学研究所, 教授 (10089120)
角田 茂  信州大学, ヒト環境科学研究支援センター, 助教 (80345032)
KeywordsC型レクチン / 真菌感染 / 感染免疫 / ノックアウトマウス / 自然免疫 / サイトカイン / Th17 / 疾患モデルマウス
Research Abstract

C型レクチンは膜タンパク質で、細胞外のCDRと呼ばれる領域で糖鎖を認識する。C型レクチンファミリーに分類される分子は非常に多数あるが、そのうち樹状細胞(DC)やマクロファージに発現する遺伝子は、マウスでは6番染色体のテロメア側にクラスター状に存在し、相同性も高い。これらの分子は自然免疫に関わる分子であることが予想されるが、ほとんどの分子の機能は不明である。そこで我々は、このクラスター上に存在するDectin-1(Clec7a)およびDectin-2(Clec4n)の欠損マウスを作製し、生体防御機構における役割を解析した。その結果、1)Dectin-1、Dectin-2は、それぞれ真菌細胞壁のβグルカン、αマンナンのレセプターであり、活性酸素種(ROS)やサイトカイン産生を担っていること、2)Clec7a^<-/->マウスはPneumocystis carinii感染に対し易感染性になり、野生型マウスと比較し感染後の肺でのシストの数が増加していること、3)Clec4n^<-/->マウスはCandida albicans感染に対し易感染性になり、野生型マウスと比較し感染後の生存率が低下すること、4)Dectin-2によるC.albicans感染防御には、IL-17が重要な役割を果たしており、Th17細胞の分化を優先的に促進すること、の3点を明らかにした。これらの結果は、以上の結果から、C型レクチンはサイトカイン産生やROS産生を介し生体防御に重要な役割を担っていることが示された。

  • Research Products

    (25 results)

All 2011 2010

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (14 results)

  • [Journal Article] Rapid host defense against Aspergillus fumigatus involves alveolar macrophages with a predominance of alternatively activated phenotype2011

    • Author(s)
      Bhatia, S.
    • Journal Title

      PloS one

      Volume: 6 Pages: e15943

    • Peer Reviewed
  • [Journal Article] The role of Syk/CARD9 coupled C-type lectins in antifungal immunity2011

    • Author(s)
      Drummond, R.A.
    • Journal Title

      European journal of immunology

      Volume: 41 Pages: 276-81

    • Peer Reviewed
  • [Journal Article] TNF-{alpha} from inflammatory dendritic cells (DCs) regulates lung IL-17A/IL-5 levels and neutrophilia versus eosinophilia during persistent fungal infection2011

    • Author(s)
      Fei, Mingjian
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 108 Pages: 5360-5

    • Peer Reviewed
  • [Journal Article] Functional specialization of interleukin-17 family members2011

    • Author(s)
      Iwakura, Yoichiro
    • Journal Title

      Immunity

      Volume: 34 Pages: 149-62

    • Peer Reviewed
  • [Journal Article] Dectin-1 diversifies Aspergillus fumigatus-specific T cell responses by inhibiting T helper type 1 CD4 T cell differentiation2011

    • Author(s)
      Rivera, Amariliz
    • Journal Title

      The Journal of experimental medicine

      Volume: 208 Pages: 369-81

    • Peer Reviewed
  • [Journal Article] Dectin-2 Recognition of α-Mannans and Induction of Th17 Cell Differentiation Is Essential for Host Defense against Candida albicans2010

    • Author(s)
      Saijo, Shinobu
    • Journal Title

      Immunity

      Volume: 32 Pages: 681-691

    • Peer Reviewed
  • [Journal Article] Activation of myeloid dendritic cells by deoxynucleic acids from Cordyceps sinensis via a Toll-like receptor 9-dependent pathway2010

    • Author(s)
      Xiao, Gang
    • Journal Title

      Cellular Immunology

      Volume: 269 Pages: 241-250

    • Peer Reviewed
  • [Journal Article] Schistosoma mansoni triggers Dectin-2, which activates the Nlrp3 inflammasome and alters adaptive immune responses2010

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

      Proceedings of the National Academy of Sciences

      Volume: 107 Pages: 20459-20464

    • Peer Reviewed
  • [Journal Article] TNF, but Not IL-6 and IL-17, Is Crucial for the Development of T Cell-Independent Psoriasis-Like Dermatitis in Il1rn-/- Mice2010

    • Author(s)
      Nakajima, A.
    • Journal Title

      The Journal of Immunology

      Volume: 185 Pages: 1887-1893

    • Peer Reviewed
  • [Journal Article] Yersinia enterocolitica Promotes Robust Mucosal Inflammatory T-Cell Immunity in Murine Neonates2010

    • Author(s)
      Echeverry, A.
    • Journal Title

      Infection and Immunity

      Volume: 78 Pages: 3595-3608

    • Peer Reviewed
  • [Journal Article] CXC chemokine receptor 4 expressed in T cells plays an important role in the development of collagen-induced arthritis2010

    • Author(s)
      Chung, Soo-Hyun
    • Journal Title

      Arthritis Research & Therapy

      Volume: 12 Pages: R188

    • Peer Reviewed
  • [Presentation] The roles of C-type lectins in the host defense against fungal infection.2010

    • Author(s)
      Shinobu Saijo
    • Organizer
      8^<th> Joint Meeting of the International Cytokine Society (ICS) and the International Society for Interferon and Cytokine Research (ISICR)
    • Place of Presentation
      Chicago, Illinois, USA
    • Year and Date
      20101003-20101007
  • [Presentation] Devepoment of TH17-dependent arthritis in IL-6-deficient IL-1 receptor antagonist-deficient mice.2010

    • Author(s)
      Satoshi Ikeda
    • Organizer
      8^<th> Joint Meeting of the International Cytokine Society (ICS) and the International Society for Interferon and Cytokine Research (ISICR)
    • Place of Presentation
      Chicago, Illinois, USA
    • Year and Date
      20101003-20101007
  • [Presentation] CXCR4 expressed in T cells plays an important role in the development of autoimmune arthritis.2010

    • Author(s)
      Soo-hyon Chung
    • Organizer
      8^<th> Joint Meeting of the International Cytokine Society (ICS) and the International Society for Interferon and Cytokine Research (ISICR)
    • Place of Presentation
      Chicago, Illinois, USA
    • Year and Date
      20101003-20101007
  • [Presentation] IL-17-producing γδ cells are important for the development of arthritis in a rheumatoid arthritis model.2010

    • Author(s)
      Aoi Akitsu
    • Organizer
      8^<th> Joint Meeting of the International Cytokine Society (ICS) and the International Society for Interferon and Cytokine Research (ISICR)
    • Place of Presentation
      Chicago, Illinois, USA
    • Year and Date
      20101003-20101007
  • [Presentation] The roles of C-type lectins in the host defense against fungal infection.2010

    • Author(s)
      Saijo, Sshinobu
    • Organizer
      14^<th> international congress of immunology
    • Place of Presentation
      Kobe Japan
    • Year and Date
      20100822-20100827
  • [Presentation] CXCR4 expressed in T cells plays an important role in the development of autoimmune arthritis.2010

    • Author(s)
      Chung, Soo-Hyon
    • Organizer
      14^<th> international congress of immunology
    • Place of Presentation
      Kobe Japan
    • Year and Date
      20100822-20100827
  • [Presentation] IL-17-producing gamma-delta T cells is important for the development of arthritis in a rheumatoid arthritis model.2010

    • Author(s)
      Akitsu, Aoi
    • Organizer
      14^<th> international congress of immunology
    • Place of Presentation
      Kobe Japan
    • Year and Date
      20100822-20100827
  • [Presentation] Development of Th17-dependent arthritis in IL-6-deficient IL-1 receptor antagonist-deficient mice.2010

    • Author(s)
      Ikeda, Satoshi
    • Organizer
      14^<th> international congress of immunology
    • Place of Presentation
      Kobe Japan
    • Year and Date
      20100822-20100827
  • [Presentation] IL-17産生性γδT細胞は自己免疫性関節炎モデルにおける関節炎発症に重要である2010

    • Author(s)
      秋津葵
    • Organizer
      第75回日本インターフェロン・サイトカイン学会学術集会
    • Place of Presentation
      小倉
    • Year and Date
      20100625-20100626
  • [Presentation] C型レクチンによるサイトカイン産生と生体防御機構2010

    • Author(s)
      西城忍
    • Organizer
      第75回日本インターフェロン・サイトカイン学会学術集会
    • Place of Presentation
      小倉
    • Year and Date
      20100625-20100626
  • [Presentation] C型レクチン遺伝子ノックアウトライブラーの作製2010

    • Author(s)
      西城忍
    • Organizer
      第57回日本実験動物学会総会
    • Place of Presentation
      京都
    • Year and Date
      20100512-20100514
  • [Presentation] IL-17産生性γδT細胞は自己免疫性関節炎モデルにおける関節炎発症に重要である2010

    • Author(s)
      秋津葵
    • Organizer
      第57回日本実験動物学会総会
    • Place of Presentation
      京都
    • Year and Date
      20100512-20100514
  • [Presentation] A C-type lectin that involved in the host defense against fungi plays an important role in the development of autoimmune arthritis.2010

    • Author(s)
      Shinobu Saijo
    • Organizer
      7^<th> International Congress on Autoimmunity
    • Place of Presentation
      Ljubliana, Slovenia
    • Year and Date
      20100505-20100509
  • [Presentation] C型レクチンによる真菌感染防御機構の解明2010

    • Author(s)
      西城忍
    • Organizer
      第31回関東医真菌懇話会
    • Place of Presentation
      東京
    • Year and Date
      2010-07-03

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Published: 2012-07-19  

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