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Development of super catalytic antibodies effective for allergy type I such as pollinosis

Research Project

Project/Area Number 16360416
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biofunction/Bioprocess
Research InstitutionPrefectural University of Hiroshima (2005-2006)
Hiroshima Prefectural University (2004)

Principal Investigator

UDA Taizo  Prefectural University of Hiroshima, Faculty of Life Science and Environment, Professor, 生命環境学部, 教授 (20232837)

Co-Investigator(Kenkyū-buntansha) HIFUMI Emi  Prefectural University of Hiroshima, Faculty of Life Science and Environment, Professor, 生命環境学部, 助教授 (90254606)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2006: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 2005: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2004: ¥5,500,000 (Direct Cost: ¥5,500,000)
KeywordsCatalytic antibody / Allergy / Pollinosis / Peptidase / Protease / ペプチダーゼ / IgE / 抗体
Research Abstract

Super catalytic antibody (Antigenase) is an epochal molecule which can not only specifically bind to the antigens but also enzymatically degrade the antigen. In this project, we will produce characteristic catalytic antibodies for curing allergy type I such as pollinosis. We have already revealed the presence of catalytic triad-like structure in some monoclonal antibodies by the experiment of immunization of human IgE into balb/c mice, cell fusion for preparing monoclonal antibodies, DNA analysis of the antibodies, and molecular modeling. The, we investigated the degradation activity of 5H5 antibody against human IgE. In this year, we investigated the feature of the catalytic antibody in detail and other antibodies capable of being catalytic antibodies.
1, Cleaved sites of IgE by 5H5 catalytic antibody was determined by N-terminal amino acid sequencing analysis. The site was located at upstream of the binding site with which IgE can bind on mast cell.
2, The degrading rate (kcat) of TP41 … More -1 peptide by the catalytic antibody 5H5 was 0.09/min.
3, CDNA sequence of the heavy and light chain of the monoclonal antibodies such as 1E3, 4C4 and 5H10 were analyzed. As the results, it was assumed that a triad-like structure was present in both heavy and light chain for 1E3 antibody. The structure was observed in the light chain.
4, The monoclonal antibodies were separated and purified for the following experiments. And the peptidase activity was investigated using TP41-1 peptide. The activity was observed for both heavy and light chain for 1E3 and 5H10 antibodies. On the other hand, no activity was detected for the heavy chain of 4C4. The peptidase activity was not clear for the light chain of 4C4.
Through the above experiments, we could obtain some other catalytic antibodies except for 5H5. By finding out the catalytic antibodies possessing high kcat and low Km, we will produce effective catalytic antibodies effective for curing the type I allergy such as pollinosis, atopic diseases etc. Less

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (11 results)

All 2006 2005 2004 Other

All Journal Article (10 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] スーパー抗体酵素(Antigenase)の臨床検査への展開2006

    • Author(s)
      一二三恵美, 宇田泰三
    • Journal Title

      臨床検査 50(12)

      Pages: 1417-1428

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] A catalytic antibody heavy chain HpU-2 degrading its epitope and H.pylori urease2006

    • Author(s)
      Emi.Hifumi, Yukiko.Yamada, Taizo.Uda
    • Journal Title

      Immunol. Lett. 103

      Pages: 68-74

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] A catalytic antibody heavy chain HpU-2 degrading its epitope and H.pylori urease2006

    • Author(s)
      Emi Hifumi, Yukiko Yamada, Taizo Uda
    • Journal Title

      Immunol. Lett. 103

      Pages: 68-74

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Specific degradation of H. pylori urease by a catalytic antibody light chain.2005

    • Author(s)
      Emi Hifumi, Kenji Hatiuchi, Takuro Okuda, Akira Nishizono, Yoshiko Okamura, Taizo Uda
    • Journal Title

      FEBS J. 272

      Pages: 4497-4505

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] "抗原を分解する抗体"の展開2005

    • Author(s)
      一二三恵美, 岡村好子, 宇田泰三
    • Journal Title

      科学 75(11),

      Pages: 1254-1259

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Investigation of active form of catalytic antibody light chain 41S-2-L.2005

    • Author(s)
      Yukie Mitsuda, Kumi Tsuruhata, Emi Hifumi, Masahiro Takagi, Taizo Uda
    • Journal Title

      Immunol. Lett. 96(1),

      Pages: 63-71

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Investigation of active form of catalytic antibody light chain 41S-2-L2005

    • Author(s)
      Y.Mitsuda, K.Tsuruhata, E.Hifumi, M.Takagi, T.Uda
    • Journal Title

      Immunol.Lett. 96(1)

      Pages: 63-71

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Catalytic antibody light chain capable of cleaving a chemokine receptor CCR-5 peptide with a high reaction rate constant.2004

    • Author(s)
      Y.Mitsuda, E.Hifumi, K.Tsuruhata, H.Fujinami, N.Yamamoto, T.Uda
    • Journal Title

      Biotechnol.Bioeng. 86(2)

      Pages: 217-225

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 酵素と抗体は兄弟?2004

    • Author(s)
      宇田泰三, 一二三恵美
    • Journal Title

      高分子 53

      Pages: 859-863

    • NAID

      10013716774

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Development of catalytic antibodies (Antigenase) to Diagnosis

    • Author(s)
      Emi Hifumi, Taizo Uda
    • Journal Title

      J. Medical Technol. 50

      Pages: 1417-1428

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] ヒトIgEに対する抗体酵素およびその利用2006

    • Inventor(s)
      宇田 泰三, 一二三恵美, 岡村 好子
    • Industrial Property Rights Holder
      広島県
    • Industrial Property Number
      2006-023677
    • Filing Date
      2006-01-31
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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