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Structure and function of receptor-operated Ca^<2+> channels and development of specific blockers of the channels

Research Project

Project/Area Number 15390075
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field General pharmacology
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

MIWA Soichi  Hokkaido Univ., Grad.School of Med., Prof., 大学院・医学研究科, 教授 (40157706)

Co-Investigator(Kenkyū-buntansha) TAKIKAWA Osamu  National Institute for Longevity Sciences, Laboratory of Radiation Safety, Head, 研究所・ラジオアイソトープ管理室, 室長 (70163342)
HATTORI Yuichi  Univ.of Toyama, School of Med., Prof., 医学部, 教授 (50156361)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥13,100,000 (Direct Cost: ¥13,100,000)
Fiscal Year 2005: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2004: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2003: ¥5,500,000 (Direct Cost: ¥5,500,000)
KeywordsEndothelin receptor / Vascular smooth muscle cell / Ca^<2+> channel / Xenopus oocyte / Ca^<2+> uptake / yeast two-hybrid / GST pull-down / cDNA cloning / cDNAクローニング / エンドセリン / 収縮 / 受容体作動性カルシウムチャネル
Research Abstract

The purpose of the present study is to isolate cDNAs encoding for receptor-operated Ca^<2+> channels activated by endothelin type A receptor (ET_AR). We found that the conventional voltage-clamp method with two electrodes cannot be used for screening Ca^<2+> influx, because expression of the receptors alone induced a large inward current resulting from Ca^<2+>-activated Cl- currents due to Ca^<2+> mobilized from the intracellular stores. Therefore, to differentiate Ca^<2+> influx through channels across the cell membrane from Ca^<2+> mobilized from the stores, we decided to use ^<45>Ca^<2+> uptake into the oocytes which were microinjected with cRNA for ET_AR and mRNA prepared from various tissues. To increase the sensitivity of the method, we developed a method to identify the injured oocytes using ^<14>C-inulin and also optimized the amount of injected cRNA for ET_AR and mRNA. Even with the improved method, we could not detect a positive fraction showing receptor-activated Ca^<2+> influx. Therefore, we decided to use a yeast-two hybrid system to isolate molecules interacting directly with ET_AR. Using this method, we have succeeded in isolating 26 clones and are now analyzing their functional roles in ET_AR-mediated Ca^<2+> signaling in the cells.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (27 results)

All 2006 2005 2004 Other

All Journal Article (21 results) Book (2 results) Publications (4 results)

  • [Journal Article] The transmembrane domain directs TLR9 to intracellular compartments that contain TLR3.2006

    • Author(s)
      Nishiya T.
    • Journal Title

      Biochem Biophys Res Commun 343(2)

      Pages: 578-584

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Ligand-independent oligomerization of TLR4 regulated by a short hydrophobic region adjacent to the transmembrane domain.2006

    • Author(s)
      Nishiya T.
    • Journal Title

      Biochem Biophys Res Commun 341(4)

      Pages: 1128-1134

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The transmembrane domain directs TLR9 to intracellular compartments that contain TLR3.2006

    • Author(s)
      Kajita E.
    • Journal Title

      Biochem Biophys Res Commun 343(2)

      Pages: 578-584

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The transmembrane domain directs TLR9 to intracellular compartments that contain TLR3.2006

    • Author(s)
      Kajita E, et al.
    • Journal Title

      Biochem Biophys Res Commun (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ligand-independent oligomerization of TLR4 regulated by a short hydrophobic region adjacent to the transmembrane domain.2006

    • Author(s)
      Nishiya T, et al.
    • Journal Title

      Biochem Biophys Res Commun 341(4)

      Pages: 1128-1134

    • Related Report
      2005 Annual Research Report
  • [Journal Article] TLR3 and TLR7 are targeted to the same intracellular compartments by distinct regulatory elements.2005

    • Author(s)
      Nishiya T.
    • Journal Title

      J Biol Chem 280(44)

      Pages: 37107-37117

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Ca^2+ entry channels involved in endothelin-induced contractions of vascular smooth muscle cells.2005

    • Author(s)
      Miwa S.
    • Journal Title

      J Smooth Muscle Res 41(2)

      Pages: 61-76

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Reciprocal changes in endothelium-derived hyperpolarizing factor- and nitric oxide-system in the mesenteric artery of adult female rats following ovariectomy.2005

    • Author(s)
      Nawate S.
    • Journal Title

      Brit J Pharmacol 144(2)

      Pages: 178-189

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Ca^<2+> entry channels involved in endothelin-induced contractions of vascular smooth muscle cells.2005

    • Author(s)
      Miwa S.
    • Journal Title

      J Smooth Muscle Res 41(2)

      Pages: 61-76

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Reciprocal changes in endothelium-derived hyperpolarizing factor- and nitric oxide-system in the mesenteric artery of adult female rats following ovariectomy.2005

    • Author(s)
      Nawate S.
    • Journal Title

      Br J Pharmacol 144(2)

      Pages: 178-189

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] TLR3 and TLR7 are targeted to the same intracellular compartments by distinct regulatory elements.2005

    • Author(s)
      Nishiya T, et al.
    • Journal Title

      J Biol Chem 280(44)

      Pages: 37107-37117

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ca^<2+> entry channels involved in endothelin-induced contractions of vascular smooth muscle cells.2005

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

      J Smooth Muscle Res 41・2

      Pages: 61-76

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Reciprocal changes in endothelium-derived hyperpolarizing factor and nitric oxide-system in the mesenteric artery of adult female rats following ovariectomy.2005

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

      Brit J Pharmacol 144

      Pages: 178-189

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ca^<2+> entry channels involved in endothelin-1-induced contractions of vascular smooth muscle cells.2005

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

      Journal of Smooth Muscle Research (in press)

    • NAID

      110002950119

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Influence of lobeline on catecholamine release from the isolated perfused rat adrenal gland.2004

    • Author(s)
      Lim D.Y.
    • Journal Title

      Auton Neuro Sci-Basic 110(1)

      Pages: 27-35

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Vascular action of endothelin.2004

    • Author(s)
      Miwa S.
    • Journal Title

      Nippon Rinsho 62(Suppl 9)

      Pages: 608-611

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Macrophage stimulating action of endothelin.2004

    • Author(s)
      Miwa S.
    • Journal Title

      Nippon Rinsho 62(Suppl 9)

      Pages: 632-635

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Reciprocal changes in endothelium-derived hyperpolarizing factor- and nitric oxide-system in the mesenteric artery of adult female rats following ovariectomy2004

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

      Brit J Pharmacol 144・2

      Pages: 178-189

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Influence of lobeline on catecholamine release from the isolated perfused rat adrenal gland.2004

    • Author(s)
      Lim, D.-Y., et al.
    • Journal Title

      Auton Neuro Sci-Basic 110・1

      Pages: 27-35

    • Related Report
      2004 Annual Research Report
  • [Journal Article] エンドセリンの血管作用2004

    • Author(s)
      三輪 聡一
    • Journal Title

      日本臨牀増刊「臨床分子内分泌学(1)」 62・増刊9

      Pages: 608-611

    • Related Report
      2004 Annual Research Report
  • [Journal Article] エンドセリンのマクロファージ活性化作用2004

    • Author(s)
      三輪 聡一
    • Journal Title

      日本臨牀増刊「臨床分子内分泌学(1)」 62・増刊9

      Pages: 632-635

    • Related Report
      2004 Annual Research Report
  • [Book] 臨床分子内分泌学(1)-心血管内分泌代謝系(上)- v.エンドセリン薬理作用と生理作用血管作用2004

    • Author(s)
      三輪聡一
    • Total Pages
      744
    • Publisher
      日本臨牀
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] 臨床分子内分泌学(1)-心血管内分泌代謝系(上)- v.エンドセリン薬理作用と生理作用マクロファージ作用2004

    • Author(s)
      三輪聡一
    • Total Pages
      744
    • Publisher
      日本臨牀
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] Osamu Takikawa, Daisuke Mori, Azusa Yamato, Soichi Miwa: "cDNA cloning of a splice variant of human carnitine transporter (OCTN2) using the database (AssEST) of human gene and ESTs"Journal of Pharmacological Sciences. 94 : SuppleI. 210 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Satoshi Nawate, Mitsuhiro Fukao, Ichiro Sakuma, et al.: "Reciprocal changes in EDHF- and NO-system in the female rat mesenteric artery following ovariectomy"Journal of Pharmacological Sciences. 94 : Supple I. 273 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 三輪 聡一: "血管作用"日本臨牀2004年増刊「臨床分子内分泌学」. (in press). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 三輪 聡一: "マクロファージ活性化作用"日本臨牀2004年増刊「臨床分子内分泌学」. (in press). (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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