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糖鎖脱離の生物学-N型遊離糖鎖の生成、分解機構とその生理機能の解明に向けて

Research Project

Project/Area Number 18657034
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Structural biochemistry
Research InstitutionThe Institute of Physical and Chemical Research (2007-2008)
Osaka University (2006)

Principal Investigator

鈴木 匡  The Institute of Physical and Chemical Research, 糖鎖代謝学研究チーム, チームリーダー (90345265)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2008: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywords小胞体 / 遊離糖鎖 / トランスポーター / 哺乳動物細胞 / 出芽酵母 / オートファジー / HPLC / 細胞質 / PNGase / ENGase / マンノシダーゼ / 複合型糖鎖 / がん細胞 / 糖鎖代謝
Research Abstract

平成20年度は、N型糖鎖の新しい代謝機構を更に詳細に解析する目的で様々な研究を行った。まず、前年度より検討していた哺乳動物における遊離糖鎖の構造のHPLCによる微量簡便検出法を確立し、発表した(Suzuki,et al.,Anal,Biochem.381,224-232)。この方法を用いて様々な細胞の遊離糖鎖を解析し、細胞の種類、または培養条件によって蓄積する糖鎖の構造や量に大きな変化があることが示された(Ishizuka,et al.,Biochem.J.413,227-237)。一方、これまで遊離糖鎖の代謝に関わらないとされていたオートファジーという細胞質やオルガネラの代謝機構が、オートファゴソーム(オートファジーの機構に必須な細胞小器官)形成不全株を用いることで、糖鎖の代謝に関わることを明らかにした。このオートファジーによる糖鎖代謝は構造特異的であり、オートファジーがどのように糖鎖構造特異的に糖鎖を代謝するのか、その分子機構は今後非常に興味深い。また、これまで困難だった小胞体から細胞質へ糖鎖を輸送するトランスポーターの活性測定法を、蛍光ラベルした糖鎖を基質に用いることで初めて確立した。一方出芽酵母における遊離糖鎖の解析をすすめたところ、あきらかに糖タンパク質由来で、ゴルジ体において修飾された糖鎖構造が見出された。このことによって、小胞体関連分解の過程で分解される糖タンパク質のうち、一部はゴルジ体まで運ばれることが明確に示された。また、細胞質における糖鎖生物学の重要性を総説に記した(Funakoshi and Suzuki,Biochim.Biophys.Acta,1790,81-94)。

Report

(3 results)
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (24 results)

All 2009 2008 2007 2006

All Journal Article (7 results) (of which Peer Reviewed: 4 results) Presentation (17 results)

  • [Journal Article] Glycobiology in the cytosol : the bitter side of a sweet world2009

    • Author(s)
      Y. Funakoshi, T. Suzuki
    • Journal Title

      Biochimica Biophysica Acta-General Subject 1790

      Pages: 81-94

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] "Experimenal Glycoscience-Glycobiology" (N. Taniguchi, et al. ed.)2008

    • Author(s)
      T. Suzuki
    • Journal Title

      A cytoplasmic peptide : N-glycanase and ER-associated degradation

      Pages: 201-203

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Accumulation of free complex-type N-glycans in stomach cancer cells, MKN7 and MKN452008

    • Author(s)
      A. Ishizuka, Y. Hashimoto, R. Naka, M. Kinoshita, K. Kakehi#, J. Seino, Y. Funakoshi, T. Suzuki#, A. Kameyama, H. Narimatsu (#-corresponding author)
    • Journal Title

      Biochemical Journal 413

      Pages: 227-237

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dual-gradient HPLC for identification of cytosolic high mannose-type free glycans2008

    • Author(s)
      T. Suzuki, I. Matsuo, K. Totani, S. Funayama, J. Seino, N. Taniguchi, Y. Ito, S. Hase
    • Journal Title

      Analytical Biochemistry 381

      Pages: 224-232

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cytoplasmic peptide:N-glycanase and catabolic pathway for free N-glycans in the cytosol.2007

    • Author(s)
      T.Suzuki
    • Journal Title

      Sem.Cell Develop. Biol. 18

      Pages: 762-769

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Man2C1, an alpha-mannosidase is involved in the trimming of free oligosaccharides in the cytosol.2006

    • Author(s)
      T.Suzuki, I.Hara, M.Nakano, M.Shigeta, T.Nakagawa, A.Kondo, Y.Funakoshi, N.Taniguchi
    • Journal Title

      Biochemical Journal 400

      Pages: 33-41

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Free oligosaccharides; formation and degradation (review article)2006

    • Author(s)
      T.Suzuki, Y.Funakoshi
    • Journal Title

      Glycoconjugate Journal 23

      Pages: 291-302

    • Related Report
      2006 Annual Research Report
  • [Presentation] Studies on the role of autophagy on metabolism of free N-glycans2009

    • Author(s)
      Junichi Seino, Noboru Mizushima, Tadashi Suzuki
    • Organizer
      Clinical and Translational Research on Cancer : Glycomics Applications
    • Place of Presentation
      志摩
    • Year and Date
      2009-03-25
    • Related Report
      2008 Annual Research Report
  • [Presentation] N型糖鎖の非リソソーム代謝2008

    • Author(s)
      鈴木匡
    • Organizer
      第81回日本生化学会/第31回日本分子生物学会合同年会
    • Place of Presentation
      神戸
    • Year and Date
      2008-12-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] The Cytoplasmic Peptide : N-glycanase (PNGase) and catabolic pathway for free N-glycans2008

    • Author(s)
      T. Suzuki
    • Organizer
      Syposium on "Protein Modification and Disease"
    • Place of Presentation
      ソウル(韓国)
    • Year and Date
      2008-12-10
    • Related Report
      2008 Annual Research Report
  • [Presentation] 小胞体における遊離糖鎖の逆行輸送メカニズム解析への試み2008

    • Author(s)
      芳賀淑美, 伊藤幸成, 阪口雅郎, 鈴木匡
    • Organizer
      第81回日本生化学会/第31回日本分子生物学会合同年会
    • Place of Presentation
      神戸
    • Year and Date
      2008-12-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] 出芽酵母の生成する中性遊離糖鎖の構造と種類について2008

    • Author(s)
      平山弘人, 鈴木匡
    • Organizer
      第81回日本生化学会/第31回日本分子生物学会合同年会
    • Place of Presentation
      神戸
    • Year and Date
      2008-12-09
    • Related Report
      2008 Annual Research Report
  • [Presentation] The structural diversity and liberation mechanism of neutral free-oligosaccharides in Saccharomyces cerevisiae2008

    • Author(s)
      Hiroto Hirayama, Tadashi Suzuki
    • Organizer
      International Symposium on Systems Glycobiology-A Bridge between Chemical Biology and Functional Glycomics
    • Place of Presentation
      東京
    • Year and Date
      2008-12-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] Establishment of analytical method of free oligosaccharide transport from the ER to cytosol.2008

    • Author(s)
      Yoshimi Haga, Yukishige Ito, Tadashi Suzuki
    • Organizer
      International Symposium on Systems Glycobiology-A Bridge between Chemical Biology and Functional Glycomics
    • Place of Presentation
      東京
    • Year and Date
      2008-12-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] Non-lysosomal degradation pathway for free N-linked oligosaccharides2008

    • Author(s)
      T. Suzuki
    • Organizer
      International Symposium on Systems Glycobiology-A Bridge between Chemical Biology and Functional Glycomics
    • Place of Presentation
      東京
    • Year and Date
      2008-12-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] 遊離N型糖鎖の代謝機構2008

    • Author(s)
      鈴木匡
    • Organizer
      第6回日本糖鎖科学コンソーシアムシンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2008-12-03
    • Related Report
      2008 Annual Research Report
  • [Presentation] Non lysosomal catabolic pathway for N-glycans2008

    • Author(s)
      T. Suzuki
    • Organizer
      SJTU-RIKEN Workshop "Glycomics ; Biological and Medical Application"
    • Place of Presentation
      上海(中国)
    • Year and Date
      2008-11-08
    • Related Report
      2008 Annual Research Report
  • [Presentation] 細胞質PNGase と細胞質N型糖鎖の代謝機構2008

    • Author(s)
      鈴木匡
    • Organizer
      第28回日本糖質学会年会
    • Place of Presentation
      つくば
    • Year and Date
      2008-08-18
    • Related Report
      2008 Annual Research Report
  • [Presentation] Cytosolic free oligosaccharides : formation and degradation2008

    • Author(s)
      Tadashi Suzuki, Kazuaki Kakehi
    • Organizer
      24^<nd> International Carbohydrate Symposium
    • Place of Presentation
      Oslo (Norway)
    • Year and Date
      2008-07-31
    • Related Report
      2008 Annual Research Report
  • [Presentation] Free sialooligosaccharides as potential ; physiological substrates for Neu2, a cytosolic sialidase2008

    • Author(s)
      Aya Ishizuka, Junichi Seino, Mitsuhiro Kinoshita, Yoko Funakoshi, Kazuaki Kakehi, Tadashi Suzuki
    • Organizer
      Sialoglyco conference 2008
    • Place of Presentation
      Moscow-St. Petersberg (Russia)
    • Year and Date
      2008-07-25
    • Related Report
      2008 Annual Research Report
  • [Presentation] ヒト胃癌細胞中に蓄積する遊離N型糖鎖の解析2007

    • Author(s)
      石塚 文, ら
    • Organizer
      第30回日本生化学会大会/第80回日本分子生物学会大会合同大会
    • Place of Presentation
      横浜
    • Year and Date
      2007-12-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] 細胞質において遊離糖鎖の代謝に関わるマンノシダーゼ、Man2C12007

    • Author(s)
      鈴木 匡, ら
    • Organizer
      第27回糖質学会年会
    • Place of Presentation
      福岡
    • Year and Date
      2007-08-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] Free N-glycans in the cytosol: formation and degradation.2007

    • Author(s)
      T.Suzuki, ら
    • Organizer
      19^<th> International Symposium on Glycoconjugate
    • Place of Presentation
      Cairn,Australia
    • Year and Date
      2007-07-17
    • Related Report
      2007 Annual Research Report
  • [Presentation] ヒト胃癌細胞中の遊離糖鎖の構造解析2007

    • Author(s)
      石塚 文, ら
    • Organizer
      第8回関西グライコサイエンスフォーラム
    • Place of Presentation
      大阪
    • Year and Date
      2007-05-12
    • Related Report
      2007 Annual Research Report

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

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