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GPCRの分子解剖ならびに活性化の可視化

Research Project

Project/Area Number 18057006
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

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

Principal Investigator

横溝 岳彦  Kyushu University, 大学院・医学研究院, 教授 (60302840)

Co-Investigator(Kenkyū-buntansha) 奥野 利明  九州大学, 大学院・医学研究院, 助教 (60361466)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 2007: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2006: ¥3,100,000 (Direct Cost: ¥3,100,000)
Keywords生理活性脂質 / 受容体 / 蛍光タンパク質 / 脂質 / Gタンパク質 / cAMP / カルシウム
Research Abstract

ロイコトリエンB4第二受容体の生体内リガンドの同定:ラットの様々な臓器より脂質抽出を行い、BLT2過剰発現細胞に添加してBLT2の活性化能を検討した。小腸から抽出したアセトン可容性の脂質画分をHPLCにて展開したりころ、LTB4とは異なるフラクションにBLT2活性化能を検出し、これを精製・質量分析系にて構造を決定したところ、12-HHT(12(S)-Hydroxyheptadeca-5Z,8E,10E-trieoic acid)であることがわかった。合成12-HHTを用いて詳細な解析を行ったところ、12_HHTはLTB4よりも低濃度でBLT2に結合し、細胞内カルシウム上昇を引き起こすことが明らかとなった。これまで12-HHTはトロンボキセンA2産生に伴う倍プロダクトでありね生物活性は無いと考られてきたが、強力なBLT2活性化能を有する新規生理活性脂質であると考えられた。
GPCR活性化の可視化:GPCR活性の可視化に向けた受容体発現ベクターの作成を開始した。BLT1受容体のC末端に様々な蛍光タンパク質を融合したベクターを構築し、哺乳動物細胞に発現させ、リガンド刺激によるFRETの変化を観察している。

Report

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

    (20 results)

All 2008 2007 2006 Other

All Journal Article (14 results) (of which Peer Reviewed: 5 results) Presentation (4 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Preparation of 2-,3-,4-, and 7-(2-alkylcarbamoyl-1-alkylvinyl)benzo[b]furans and their BLT(1) and/or BLT(2) inhibitory activities.2008

    • Author(s)
      Ando, K, 他8名
    • Journal Title

      Org. Biomol. Chem. 6

      Pages: 296-307

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 12(S)-Hydroxyheptadeca-5Z, 8E-teienoic acid is a natural ligand for leukotriene B4 receptor 2.2008

    • Author(s)
      Okuno, T, 他5名
    • Journal Title

      J. Exp. Med. (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of an orphan G protein-coupled receptor, GPR20, that constitutively activates Gi proteins.2008

    • Author(s)
      Hase, M, 他3名
    • Journal Title

      J. Biol. Chem. (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and biological activities of novel furo[2,3,4-jk][2]benzazepin-4(3H)-one derivatives.2007

    • Author(s)
      Ando, K, 他9名
    • Journal Title

      Org. Biomol. Chem. 5

      Pages: 655-663

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of 3-(4-chlorophenyl)-2-(2-aminothiazol-4-yl)-5-methoxybenzo[b]furan derivatives and their leukotriene B(4) inhibitory activity.2007

    • Author(s)
      Sakata, Y, 他7名
    • Journal Title

      Org. Biomol. Chem. 5

      Pages: 3083-3086

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ロイコトリエンによる免疫制御2007

    • Author(s)
      横溝岳彦
    • Journal Title

      細胞工学 26

      Pages: 1236-1240

    • Related Report
      2007 Annual Research Report
  • [Journal Article] 細胞膜受容体の脂質性リガンド:エイコサノイド、スフィンゴ脂質と新規抗炎症脂質2007

    • Author(s)
      横溝岳彦
    • Journal Title

      臨床検査 51

      Pages: 459-468

    • Related Report
      2007 Annual Research Report
  • [Journal Article] LTB4受容体の同定とその後の進展2007

    • Author(s)
      横溝岳彦
    • Journal Title

      日本薬理学会雑誌 130

      Pages: 29-33

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Identification of the Intracellular Region of the Leukotriene B4 receptor type-1 that Specifically Involves in Gi-Activation.2007

    • Author(s)
      Kunieda, K., 他5名
    • Journal Title

      J. Biol. Chem. 282

      Pages: 3998-4006

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Attenuation of folic acid-induced renal inflammatory injury in platelet-activating factor receptor-deficient mice.2006

    • Author(s)
      Doi, K., 他12名
    • Journal Title

      Am. J. Pathol. 168

      Pages: 1413-1424

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Crystal structure of anti-configuration of indomethacin and leukotriene B-4 12-hydroxydehydrogenase/15-oxo-prostaglandin 13-reductase complex reveals the structural basis of broad spectrum indomethacin efficacy.2006

    • Author(s)
      Hori, T., 他5名
    • Journal Title

      J. Biochem. 140

      Pages: 457-466

    • Related Report
      2006 Annual Research Report
  • [Journal Article] The Lipoxin receptor ALX : Potent ligand-specific and stereoselective actions in vivo.2006

    • Author(s)
      Chiang N, 他7名
    • Journal Title

      Pharmacol. Rev. 58

      Pages: 463-487

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 生理活性脂質ロイコトリエンB4とその受容体2006

    • Author(s)
      横溝岳彦
    • Journal Title

      福岡医学 97

      Pages: 183-191

    • NAID

      120002548749

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 脂質因子による免疫反応の制御2006

    • Author(s)
      横溝岳彦
    • Journal Title

      感染 炎症 免疫 36

      Pages: 196-205

    • Related Report
      2006 Annual Research Report
  • [Presentation] ロイコトリエンB4受容体と免疫・炎症反応2007

    • Author(s)
      横溝岳彦
    • Organizer
      第16回日本脂質栄養食糧学会
    • Place of Presentation
      島根
    • Year and Date
      2007-09-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] ロィコトリエンB4受容体の生体内での役割2007

    • Author(s)
      横溝岳彦
    • Organizer
      第27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] Leukotriene B4 receptors: from cloning to clinic2007

    • Author(s)
      横溝岳彦
    • Organizer
      5th Korea-Japan Conference on Cell Signaling for Young Scientists
    • Place of Presentation
      韓国・Geongiu
    • Year and Date
      2007-06-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] Leukotriene B4 receptors2007

    • Author(s)
      横溝岳彦
    • Organizer
      3rd International Conference on Phospholipase A2 and Lipid Mediators
    • Place of Presentation
      中国・北京
    • Year and Date
      2007-05-10
    • Related Report
      2007 Annual Research Report
  • [Book] 実験医学増刊・シグナル受容機構と生理機能の解明2006

    • Author(s)
      横溝岳彦
    • Total Pages
      222
    • Publisher
      羊土社
    • Related Report
      2006 Annual Research Report
  • [Remarks]

    • URL

      http://www.med.kyushu-u.ac.jp/biochem1/jiu_zhou_da_xue_yi_xue_bu_yi_hua_xue_fen_yenoHP/Top.html

    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2018-03-28  

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