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

Identification of novel catechin receptor that mediates blood vessel protective effect and vasodilatation, and it's application for functional food

Research Project

Project/Area Number 18580113
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Food science
Research InstitutionThe University of Tokyo

Principal Investigator

NAKAI Yuji  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor (10321788)

Co-Investigator(Kenkyū-buntansha) HISATSUNE Tatsuhiro  The University of Tokyo, Graduate School of Frontier Sciences, Associate Professor (10238298)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2006: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsfood / physiology / proteomics / receptor / polyphenol
Research Abstract

From preliminary investigation, we found a vasodilatation effect of (+)-catechin on the endothrial cells. The effect was observed within 30 minutes after (+)-catechin treatment in vivo, but not (-)-epigallocatechin gallate, we hypothesized that the existence of novel (+)-catechin specific receptor and that the effect was mediated through the receptor signaling thereby produced NO. In order to identify putative (+)-catechin receptor, we used a differential proteomics approach in the brain of (+)-catechin injected mice. Male, 8-week-old ICR mice were injected 100 mg/ml (+)-catechin intravenously. After 3h injection, the brain was excised and homogenized to extract proteins. The brain extracts were subjected to 2-D PAGE, and then the 2-D gels were silver stained. The spots with a pI of 〜8.1 and a molecular mass of 〜60 kDa and a pI of 〜8.3 and a molecular mass of 〜17 kDa were markedly increased in (+)-catechin injected mouse brain extract compared with vehicle injected control. While the spot with a pI of 〜5.7 and a molecular mass of 22 kDa was decreased. These changes in spots are suspected to be brought about by the post-translational modification such as protein phosphorylation or protein degradation of the putative receptor itself or its downstream signaling molecules. Next, we will try to isolate these protein spots and analyze the amino acid sequences using peptide mass fingerprinting.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (3 results)

All 2008

All Journal Article (3 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] Up-regulation of Genes Related to the Ubiquitin-Proteasome System in the Brown Adipose Tissue of 24-h-fasted Rats.2008

    • Author(s)
      Nakai, Y.
    • Journal Title

      Biosci. Biotechnol. Biochem. 72

      Pages: 139-148

    • NAID

      10027523175

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Up-regulation of Genes Related to the Ubiquitin-Proteasome System in the Brown Adipose Tissue of 24-h-fasted Rats2008

    • Author(s)
      Yuji Nakai, Hiroko Hashida, Koji Kadota, Michiko Minami, Kentaro Shimizu, Ichiro Matsumoto, Hisanori Kato, and Keiko Abe
    • Journal Title

      Biosci. Biotechnol. Biochem 72

      Pages: 139-148

    • NAID

      10027523175

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Up-regulation of Genes Related to the Ubiquitin-Proteasome System in the Brown Adipose Tissue of 24-h-fasted Rats.2008

    • Author(s)
      Nakai, Y., Hashida, H., Kadota, K., Minami, M., Shimizu, K., Matsumoto, I., Kato, H., Abe, K.
    • Journal Title

      Biosci. Biotechnol. Biochem. 72

      Pages: 139-148

    • NAID

      10027523175

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi