• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2000 Fiscal Year Final Research Report Summary

Cloning of nocistatin receptor and development of new aanalgesics

Research Project

Project/Area Number 11558093
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Neurochemistry/Neuropharmacology
Research InstitutionKansai Medical University

Principal Investigator

ITO Seiji  Kansai Medical University, Medicine, Professor, 医学部, 教授 (80201325)

Co-Investigator(Kenkyū-buntansha) ISHIKAWA Tomohisa  Pfizer Pharmaceuticals Inc, Central Research, Medical Biology Laboratory, Manager, 学術交流推進室, 室長
MINAMI Toshiaki  Osaka Medical College, Medicine, Lecturer, 医学部, 講師 (00257841)
OKUDA-ASHITAKA Emiko  Kansai Medical University, Medicine, Lecturer, 医学部, 講師 (50291802)
Project Period (FY) 1999 – 2000
Keywordsopioid / nociceptin / orphanin FQ / nocistatin / analgesics / cAMP / cloning of receptors
Research Abstract

We previously isolated a peptide termed as nociceptin/orphanin FQ (Noc/OFQ) from bovine brain as an endogenous ligand for the orphan opioid-like receptor ROR-C.We demonstrated that intrathecal (i.t.) administration of Noc/OFQ into conscious mice induced hyperalgesia and tactile pain (allodynia). We found a novel heptadecapeptide which blocks the Noc/OFQ-evoked pain responses, on the same precursor as Noc/OFQ and named it nocistatin. Nocistatin exerts actions through the postulated nocistatin receptor. To develop novel analgesics, we tried to characterize pain transmission involving Noc/OFQ and nocistatin and clone cDNA of nocistatin receptor and obtained following results.
1) Based on the results obtained by a Noc/OFQ antagonist developed recently, nocistatin only blocked the responses mediated by the Noc/OFQ receptor. 2) Nocistatin has a broad spectrum of analgesics ; it alleviated the pain induced by i.t. PGE2, i.t. PGF2α and intraplantar formalin in addition to i.t. Noc/OFQ.3) Nocistatin activated adenylate cyclase in the membrane prepared from mouse brain and spinal cord in a GTP-dependent manner and increased cAMP.4) In order to develop a new analgesic, we synthesized various peptides on the basis of amino acid sequence of nocistatin and evaluated them by analgesic effects and capability of cAMP increase. 5) We have tried to clone a nocistatin receptor cDNA from a cDNA library prepared from mouse brain with expression-cloning methods by use of mammalian cell lines and Xenopus oocytes. Since the cloning of nocistatin receptor is a requisite for the development of nocistatin antagonists as new analgesics, purification of the nocistatin receptor has been also tried by photoaffinity labeling, in parallel with the cloning of the nocistatin receptor cDNA.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Nakano,H.: "Effect of intrathecal nocistatin on the formalin-induced pain in mice versus that of nociceptin/orphanin FQ."J.Pharmacol.Exp.Ther.. 292. 331-336 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Minami,T.: "Characterization of nociceptin/orphanin FQ-induced pain responses in conscions mice : neonatal capsaicin treatment and NMDA receptor GluRε subunit knockout mice."Neuroscience. 97. 133-142 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ito,S.: "Central roles of nociceptin/orphanin FQ and nocistatin : allodynia as a model of neural plasticity."Prog.Brain Res.. 129. 205-218 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Okuda-Ashitaka,E.: "Nocistatin : a novel neuropeptide encoded by the gene for the nociceptin/orphanin FQ precusor."Peptides. 21. 1101-1109 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nishizawa,M.: "Close kinship of human 20a-hydroxysteroid dehydrogenase gene with three aldo-keto reductase genes."Genes to Cells. 5. 111-125 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Minami,T.: "Characterization of the glutamatergic system for induction and maintenance of allodynia."Brain Res.. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nakano, H.: "Effect of intrathecal nocistatin on the formalin-induced pain in mice versus that of nociceptin/orphanin FQ."J.Pharmacol.Exp.Ther.. 292. 331-336 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Minami, T.: "Characterization of nociceptin/orphanin FQ-induced pain in responses conscious mice : neonatal capsaicin treatment and NMDA receptor GluR ε subunit knockout mice."Neuroscience. 97. 133-142 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ito, S.: "Central roles of nociceptin/orphanin FQ and nocistatin : allodynia as a model of neural plasticity."Prog.Brain Res.. 129. 205-218 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Okuda-Ashitaka, E.: "Nocistatin : a novel neuropeptide encoded by the gene for the nociceptin/orphanin FQ precursor."Peptides. 21. 1101-1109 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nishizawa, M.: "Close kinship of human 20α-hydroxysteroid dehydrogenase gene with three aldo-keto reductase genes."Genes to Cells. 5. 111-125 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Minami, T.: "Characterization of the glutamatergic system for induction and maintenance of allodynia."Brain Res.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2002-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi