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2013 Fiscal Year Final Research Report

Creation of Novel Anti-allergic Leads Based on the Inhibition for Expression of IgE Receptors

Research Project

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Project/Area Number 24790109
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Drug development chemistry
Research InstitutionTohoku University

Principal Investigator

TAMURA Satoru  東北大学, 理学(系)研究科(研究院), 講師 (30362619)

Project Period (FY) 2012-04-01 – 2014-03-31
Keywords抗アレルギー / IgEレセプター / マスト細胞 / chlorin e6 / RBL 2H3 / pheophorbide a / PCA反応
Research Abstract

Allergy is caused by chemical mediators degranulated from mast cells. This degranulation is derived through the important two steps. In a first step, immunoglobulin Es (IgEs) are attached on the IgE receptors on the surface of mast cells. Then, the IgEs on mast cells react with invaded allergens in a second step. In this circumstance, I wondered that the decrease of IgE receptors on the mast cells may be able to suppress allergic reactions. Based on this idea, I established the assay system for evaluation of the amount of IgE receptors on the surface of cultured mast cells by immunofluorescence staining and flow cytometry. By the screening from medicinal plants for inhibitors against expression of IgE receptors, chlorin e6 was found as a potent inhibitor. Fortunately, chlorin e6 suppressed the expression of IgE receptors not only in vitro but also in vivo rat experiments. Finally, chlorin e6 was clarified to inhibit in vivo allergic reaction of rats through po administration.

  • Research Products

    (7 results)

All 2014 2013 2012

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

  • [Journal Article] Synthetic Studies of Cortistatin A Analogue from the CD-Ring Fragment of Vitamin D22013

    • Author(s)
      Kotoku, N.; Mizushima, K.; Tamura, S.; Kobayashi, M
    • Journal Title

      Chem Pharm. Bull

      Volume: 61 Pages: 1024-1029

    • DOI

      10.1248/cpb.c13-00375

    • Peer Reviewed
  • [Journal Article] Contribution of cage-shaped structure of physalins to their mode of action in inhibition of NF-κB activation2013

    • Author(s)
      Ozawa, M.; Morita, M.; Hirai, G.; Tamura, S.; Kawai, M.; Tsuchiya, A.; Oonuma, K.; Maruoka, K.; Sodeoka, M
    • Journal Title

      ACS Med Chem. Lett

      Volume: 4 Pages: 730-735

    • DOI

      10.1021/ml400144e

    • Peer Reviewed
  • [Journal Article] Triazoyl-phenyl linker system enhancing the aqueous solubility of a molecular probe and its affinity labeling of a target protein for jasmonate glucoside2013

    • Author(s)
      Tamura, S.; Inomata, S.; Ebine, M.; Genji, T.; Iwakura, I.; Mukai, M.; Shoji, M.; Sugai, T.; Ueda, M
    • Journal Title

      Bioorg. Med. Chem. Lett

      Volume: 23 Pages: 188-193

    • DOI

      10.1016/j.bmcl.2012.10.124.

    • Peer Reviewed
  • [Journal Article] Creation of readily accessible and orally active analogue of cortistatin A2012

    • Author(s)
      Kotoku, N.; Sumii, Y.; Hayashi, T, Tamura, .; Kawachi, T.; Shiomura, S.; Arai, M.; Kobayashi, M
    • Journal Title

      ACS Med Chem. Lett

      Volume: 3(8) Pages: 673-677

    • DOI

      10.1021/ml300143d.

    • Peer Reviewed
  • [Journal Article] Hybrid stereoisomers of a compact molecular probe based on a jasmonic acid glucoside : Syntheses and biological evaluations2012

    • Author(s)
      Ueda, M.; Yang, G.; Ishimaru, Y.; Itabashi, .; Tamura, S.; Kiyota, H.; Kuwahara, S.; Inomata, S.; Shoji, M.; Sugai, T
    • Journal Title

      Bioorg. Med. Chem

      Volume: 20 Pages: 5832-5843

    • DOI

      10.1016/j.bmc.2012.08.003.

    • Peer Reviewed
  • [Presentation] 天然物からメディシナルケミストリーとケミカルバイオロジー2013

    • Author(s)
      田村理
    • Organizer
      第48回天然物化学談話会
    • Place of Presentation
      大津市
    • Year and Date
      2013-07-03
  • [Book] 化学工業2014

    • Author(s)
      田村理
    • Total Pages
      15-21
    • Publisher
      化学工業社

URL: 

Published: 2015-06-25  

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