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ダニの唾液由来免疫抑制因子を用いるダニ媒介性病原体の伝播阻止

Research Project

Project/Area Number 18658117
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Applied veterinary science
Research InstitutionHokkaido University

Principal Investigator

小沼 操  Hokkaido University, 名誉教授 (70109510)

Co-Investigator(Kenkyū-buntansha) 大橋 和彦  北海道大学, 大学院・獣医学研究科, 准教授 (90250498)
今内 覚  北海道大学, 大学院・獣医学研究科, 助教 (40396304)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2007: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordsフタトゲチマダニ / ダニ唾液由来因子 / 免疫抑制因子
Research Abstract

ダニの発現遺伝子の網羅的解析のため吸血5日目のフタトゲチマダニ(Haemaphysalis longicornis)唾液腺を用いてEST解析(発現タグ解析)を行った。得られた653配列を米国NCBIのblastXプログラムを用いて蛋白データベースと比較したところ、232配列(36%)で有意な相関を示す類似遺伝子が見つかった。その大半は細胞の生存に必要な、いわゆるハウスキーピング遺伝子であったが、1/3は宿主の生理活性に何らかの影響を与え得る因子であると推察された。今回得られた遺伝子の一つは抗凝固因子であるmadanin1と塩基配列で88%、アミノ酸配列で66%の相同性を示した。そこで本因子の生物活性を解析したところ抗凝固活性が認められた。一方、免疫抑制作用が示唆される1配列について宿主免疫への影響を解析した。その結果、牛末梢血単核球(PBMC)やマウス脾臓細胞の増殖反応を濃度依存的に抑制し、サイトカイン(IL-2、IL-12p40およびTNF-α)の発現も強く抑制した。また、BALB/cマウスへの接種では、脾臓の萎縮が認められ、これらのマウス由来の脾臓細胞は各種Mitogenに対する増殖反応が著しく低下し、Microarray解析では免疫活性化因子の発現抑制も認められた。

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (17 results)

All 2008 2007 2006

All Journal Article (7 results) (of which Peer Reviewed: 2 results) Presentation (10 results)

  • [Journal Article] Establishment of a laboratory colony of taiga tick lxodes persulcatus for tick-borne pathogen transmission studies2008

    • Author(s)
      Konnai S, Saito Y, Onuma M, et. al.
    • Journal Title

      Japanese Journal of Veterinary Medicine 55

      Pages: 85-92

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Attachment duration required for Rhipicephalus appendiculatus to transmit Theileria parva to the host2007

    • Author(s)
      Konnai S, Yamada S, Onuma M, et. al.
    • Journal Title

      Vector Borne and Zoonotic Diseases 7

      Pages: 241-248

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent topics of candidate antigens for immunological control of Ixodid ticks2007

    • Author(s)
      Imamura S, Onuma M, et. al.
    • Journal Title

      Act Sci Vet b 35

      Pages: 1-16

    • Related Report
      2007 Annual Research Report
  • [Journal Article] 感染症制圧を目的とした新規ダニベクターコントロール戦略の開発2007

    • Author(s)
      今村彩貴, 小沼 操
    • Journal Title

      獣医畜産新報 60

      Pages: 124-130

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Two serine protease inhibitor (serpin) that induce a bovine protective immune response against Rhipicephalus appendiculatus ticks.2006

    • Author(s)
      Imamura S, Onuma M et al.
    • Journal Title

      Vaccine 24

      Pages: 2230-2237

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A novel gene encoding a thrombin inhibitory protein in a cDNA library from Haemaphysalis longicornis salivary gland.2006

    • Author(s)
      Nakajima C, Onuma M et al.
    • Journal Title

      J. Vet. Med. Sci. 68

      Pages: 447-452

    • NAID

      110004775647

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Acquisition and transmission of Theileria parva by vector tick, Rhipicephalus appendiculatus.2006

    • Author(s)
      Konnai S, Imamura S et al.
    • Journal Title

      Acta Trop. 99

      Pages: 24-41

    • NAID

      120000963870

    • Related Report
      2006 Annual Research Report
  • [Presentation] マダニのEST解析とダニワクチンの現状2007

    • Author(s)
      今内 覚, 小沼 操, 大橋和彦
    • Organizer
      ダニと疾患のインターフェースに関するセミナー
    • Place of Presentation
      宮崎県宮崎市(宮崎市図書館)
    • Related Report
      2007 Annual Research Report
  • [Presentation] 牛のダニ媒介性原虫(T.parva)の実験的伝播2007

    • Author(s)
      今内 覚, 小沼 操, 大橋和彦
    • Organizer
      ダニと疾患のインターフェースに関するセミナー
    • Place of Presentation
      宮崎県宮崎市(宮崎市図書館)
    • Related Report
      2007 Annual Research Report
  • [Presentation] Development of an anti-tick vaccine to protect cattle against tick-borne tran smission of Theileria parva2007

    • Author(s)
      Imamura S, Konnai S, Onuma M, et. al.
    • Organizer
      8th International Veterinary Immunology Symposium
    • Place of Presentation
      Ouro Preto, Brazil(Estalagem das Minas Gerais Convention Center)
    • Related Report
      2007 Annual Research Report
  • [Presentation] Suppression of proliferation and cytokine expression by HeLIS, a tick salivary grand-derived protein of Haemaphysalis longicornis2007

    • Author(s)
      Konnai S, Nakajima C, Onuma M, et. al.
    • Organizer
      8th International Veterinary Immunology Symposium
    • Place of Presentation
      Ouro Preto, Brazil(Estalagem das Minas Gerais Convention Center)
    • Related Report
      2007 Annual Research Report
  • [Presentation] Evaluation of immunogenicity in bovines of Riphicephalus(Boophilus)microplus and Haemaphysalis longicornis recombinant calreticulins2007

    • Author(s)
      Parizi LF, Imamura S, Onuma M, et. al.
    • Organizer
      8th International Veterinary Immunology Symposium
    • Place of Presentation
      Ouro Preto, Brazil(Estalagem das Minas Gerais Convention Center)
    • Related Report
      2007 Annual Research Report
  • [Presentation] Cloning and characterization of the recombinant glycogen synthase kinase(GSK-3B)from Boophilus microplus expressed in E. coli2007

    • Author(s)
      Andrade CP, Imamura S, Onuma M, et. al.
    • Organizer
      8th International Veterinary Immunology Symposium
    • Place of Presentation
      Ouro Preto, Brazil(Estalagem das Minas Gerais Convention Center)
    • Related Report
      2007 Annual Research Report
  • [Presentation] GSK activity is involved to PEPCK gene expression during tick embryo development2007

    • Author(s)
      Logullo C, Imamura S, Onuma M, et. al.
    • Organizer
      8th International Veterinary Immunology Symposium
    • Place of Presentation
      Ouro Preto, Brazil(Estalagem das Minas Gerais Convention Center)
    • Related Report
      2007 Annual Research Report
  • [Presentation] シュルツェマダニ由来defensin遺伝子のクローニング及び発現解析2007

    • Author(s)
      斉藤 洋一, 今内 覚, 小沼 操, 他.
    • Organizer
      第144回日本獣医学会学術集会
    • Place of Presentation
      北海道江別市(酪農学園大学)
    • Related Report
      2007 Annual Research Report
  • [Presentation] コイタマダニ由来新規シスタチン遺伝子のクローニングと性状解析2007

    • Author(s)
      今村彩貴, 今内 覚, 小沼 操, 他.
    • Organizer
      第144回日本獣医学会学術集会
    • Place of Presentation
      北海道江別市(酪農学園大学)
    • Related Report
      2007 Annual Research Report
  • [Presentation] コイタマダニにおけるオスダニ由来因子の同定と発現解析2007

    • Author(s)
      山田慎二, 今内 覚, 小沼 操, 他.
    • Organizer
      第144回日本獣医学会学術集会
    • Place of Presentation
      北海道江別市(酪農学園大学)
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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