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Development of nonpeptidic opioid PET ligands to study pain system in the higher brain

Research Project

Project/Area Number 12557230
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 応用薬理学・医療系薬学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SATOH Masamchi  Kyoto Univ., Grad. Sch. of Pharraaceu. Sci., Professor, 薬学研究科, 教授 (80025709)

Co-Investigator(Kenkyū-buntansha) NAKAGAWA Takayuki  Kyoto Univ., Grad. Sch. of Pharmaceu. Sci., Instructor, 薬学研究科, 助手 (30303845)
MINAMI Masabumi  Kyoto Univ., Grad. Sch. of Pharmaceu. Sci., Assistant Professor, 薬学研究科, 助教授 (20243040)
SAJI Hideo  Kyoto Univ.,Grad.Sch.of Pharmaceu.Sci., Professor, 薬学研究科, 教授 (40115853)
IWAMURA Tatsunori  Gifu Pharmaceu. Univ., Dept. of Organic Chem., Assistant Professor, 薬学部, 講師 (70184900)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥13,400,000 (Direct Cost: ¥13,400,000)
Fiscal Year 2001: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2000: ¥10,100,000 (Direct Cost: ¥10,100,000)
KeywordsPET ligand / Opioid receptor / Carfentanil / Pain / Imaging / Binding activity / Endogenous ligand / Structure-activity relationships
Research Abstract

μ-Opioid receptors and their endogenous ligand are involved in the regulation of sensory and affective components of the pain experience. However, the molecular basis of the roles of opioidergic system in the higher brain functions, such as emotion and memory, remains to be elucidated. In this study, we studied on the synthesis and structure-activity relationships μ-opioid ligand to develop novel μ-selective nonpeptidic ligands which can be used for the positron emission tomography (PET) study. We synthesized several 1-aralky-4-phenylaminopiperidinecarboxylate derivatives and examined the binding affinity for μ-, δ-, κ- opioid and nociceptin receptors using the cell lines expressing the each of these receptors. 1-[2(2-Naphthyl)ethyl] -4- [(1-oxopropyl) phenylamino] -4-piperidinecarboxylic acid methyl ester exhibited the selective μ-opioid receptor binding activity. The Ki values of the compound were 5.6 nM for μ-, 3100 nM for δ-, and 5400 nM for K-receptor, respectively. The receptor-selectivity ratios were shown as δ/μ = 550 and κ/μ = 960. In addition, this compound showed no detectable affinity on a nociceptin receptor (Ki > 1 0000 nM). The experiment using the cell line expressing the cloned μ-opioid receptors revealed that this compound acted as a (μ-receptor agonist. This novel nonpeptidic ligand that is highly selective to μ-opioid receptors can be a useful tool for opioid pharmacology and PET study.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Watanabe, T. et al.: "Involvement of glutamate receptors within the central nucleus of the amygdala in nalox-one-precipitated morphine withdrawal-induced conditioned place aversion in rats"Jpn. J. Pharmacol.. (in press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshida, K. et al.: "ATP inhibits slow depolarization induced by repetitive dorsal root stimulation in substantia gelatinosa neurons of the adult rat spinal cord slices via P2Y purinoceptors"Neurosci. Lett.. 320. 121-124 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fukui, M. et al.: "Involvement of β2-adrenergic and μ-opioid receptors in antinocieotion produced by intracerebroventricular administration of α, β-methylene-ATP"Jpn. J. Pharmacol.. 86. 423-428 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fukui, M. et al.: "Antinociceptive effects of intracerebroventricularly administered P2 purinoceptor agonists in tha rat"Eur. J. Pharmacol.. 419. 25-31 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakagawa, T. et al.: "Up-regulation of RGS4 mRNA by opioid agonists in PC12 cells expressing cloned μ-or κ-opioid receptors"Eur. J. Pharmacol.. 433. 29-36 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Ide, S, et al.: "Endomorphin-1 discriminated the μ-opioid receptor form the δ-and κ-opioid receptors by recognizing the difference in multiple regions"Jan. J. Pharmacol.. 83. 306-311 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 佐藤 公道: "7回膜貫通型受容体研究の新展開 オピオイド受容体 -ポストゲノム時代の受容体研究のゆくえ-"医歯薬出版株式会社(佐藤公道、赤池昭紀 編). 5 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Watanabe, T. et al: "Involvement of glutamate receptors within the central nucleus of the amygdala in naloxone-precipitated morphine withdrawal-induced conditioned place aversion in rats"Jpn. J. Pharmacol.. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yoshida, K. et al: "ATP inhibits slow depolarization induced by repetitive dorsal root stimulation in substantia gelatinosa neurons of the adult rat spinal cord slices via P2Y purinoceptors"Neurosci. Lett. 121. 121-124 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fukui, M. et al: "Involvement of β2-adrenergic and μ- opioid receptors in antinocieotion produced by intracerebroventricular administration of α,β-methylene-ATP"Jpn. J. Pharmacol.. 86. 423-428 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fukui, M. et al: "Differential regulation of N-and Q-type Ca^<2+> channels by cyclic nucleotides and G-proteins"Eur. J. Pharmacol.. 419. 25-31 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakagawa, T. et al: "Up-regulation of RGS4 mRNA by opioid agonists in PC 12 cells expressing cloned μ- or κ-opioid receptors"Eur. J. Pharmacol.. 433. 29-36 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Ide, S. et al: "Endomorphin-1 discriminates the μ- opioid receptor from the δ-and κ-opioid receptors by recognizing the difference in multiple regions"Jpn. J. Pharmacol. 83. 306-311 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Satoh, M: "Opioid receptors"New trends in seven-transmembrane-domain receptor research -Scope for receptor research in post-genome area-. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Watanabe, T.et al.: "Involvement of glutamate receptors within the central nucleus of the amygdala in nalox-one-precipitated morphine withdrawal-induced conditioned place aversion in rats"Jpn.J.Pharmacol.. (in press). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yoshida, K.et al.: "ATP inhibits slow depolarization induced by repetitive dorsal root sitmulation in substantia gelatinosa neurons of the adult rat spinal cord slices via P2Y purinoceptors"Neurosci.Lett.. 320. 121-124 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Fukui, M.et al.: "Involvement of β2-adrenergic and μ-opioid receptors in antinocieotion produced by intracerebroventricular administration of α,β-methylene-APT"Jpn.J.Pharmacol.. 86. 423-428 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Fukui, M.et al.: "Antinociceptive effects of intracerebroventricularly administered P2 purinoceptor agonists in tha rat"Eur.J.Pharmacol.. 419. 25-31 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Ide,S. et al.: "Endomorphin-1 discriminates the μ-opioid receptor from the δ-and κ-opioid receptors by recognizing the difference in multiple regions."Jpn.J.Pharmacol.. 83. 306-311 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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