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2013 Fiscal Year Final Research Report

Development of a novel antidiabetic drug based on the targeting of GnT-IVa glycosyltransferase

Research Project

  • PDF
Project/Area Number 23790363
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pathological medical chemistry
Research InstitutionKumamoto University (2013)
Osaka University (2011-2012)

Principal Investigator

OHTSUBO KAZUAKI  熊本大学, 生命科学研究部, 教授 (30525457)

Co-Investigator(Renkei-kenkyūsha) KOREKANE Hiroaki  独立行政法人理化学研究所, 疾患糖鎖研究チーム, 研究員 (50421912)
NAKAJIMA Kazuki  独立行政法人理化学研究所, 神経膜機能研究チーム, 研究員 (10442998)
Project Period (FY) 2011 – 2013
Keywords糖鎖修飾 / グルコーストランスポーター / グルコースセンサー機能 / 膵臓β細胞
Research Abstract

We have focused on the physiological and functional regulation mechanism of a glycosyltransferase "GnT-IVa", modulating the glucose sensor function of pancreatic beta cells, for developing a novel antidiabetic drug. We have revealed that high fat-diet induces significant oxidative stress in pancreatic beta cells that can be a trigger to suppress GnT-IVa expression and diminishes glucose stimulated insulin secretion in the pathogenesis of type 2 diabetes. Besides, we engineered to express GnT-IVa in pancreatic beta cells in vivo, and then revealed that they are resistant to the high fat-diet induced diabetes that strongly suggest that GnT-IVa is an important target to develop antidiabetic drugs. We established cell-based assay system for exploring the drug compounds enhancing GnT-IVa expression from chemical libraries.

  • Research Products

    (8 results)

All 2014 2013 2012 2011 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (3 results) Book (1 results) Remarks (1 results)

  • [Journal Article] N-glycosylation modulates the membrane sub-domain distribution and activity of glucose transporter 2 in pancreatic beta cells2013

    • Author(s)
      Kazuaki Ohtsubo, Shinji Takamatsu, Congxiao Gao, Hiroaki Korekane, Tsutomu M. Kurosawa, Naoyuki Taniguchi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 434 (2) Pages: 346-351

    • DOI

      10.1016/j.bbrc.2013.03.076

    • Peer Reviewed
  • [Journal Article] The interaction between Siglec-15 and tumor-associated sialyl-Tn antigen enhances TGF-βsecretion from monocytes/macrophages through the DAP-12-Syk pathway2012

    • Author(s)
      Rina Takamiya, Kazuaki Ohtsubo, Shinji Takamatsu, Naoyuki Taniguchi and Takashi Angata
    • Journal Title

      Glycobiology

      Volume: 23 (2) Pages: 178-187

    • DOI

      10.1093/glycob/cws139

    • Peer Reviewed
  • [Journal Article] A Pathway to Diet- and Obesity-Associated Diabetes Through Attenuation of Pancreatic Beta Cell Glycosylation and Glucose Transport2011

    • Author(s)
      Kazuaki Ohtsubo, Mark Z Chen, Jerrold M Olefsky, Jamey D Marth
    • Journal Title

      Nature Medicine

      Volume: 17 Pages: 1067-1075

    • DOI

      10.1038/nm.2414

    • Peer Reviewed
  • [Presentation] 糖尿病発症過程におけるβ細胞の糖鎖異常2013

    • Author(s)
      大坪和明
    • Organizer
      Japan Consortium for Glycobiology and Glycotechnology
    • Place of Presentation
      仙台(東北薬科大学)
    • Year and Date
      2013-10-25
  • [Presentation] 膵臓β細胞におけるN型糖鎖修飾によるGLUT2の膜ドメイン局在と機能制御2013

    • Author(s)
      大坪和明、高松真二、高叢笑、是金宏昭、谷口直之
    • Organizer
      日本糖質学会年会
    • Place of Presentation
      大阪(大阪国際交流センター)
    • Year and Date
      2013-08-07
  • [Presentation] Pathway toDiet–and Obesity–Associated Diabetes Through Attenuation of Pancreatic Beta Cell Glycosylation and Glucose Transport2011

    • Author(s)
      Kazuaki Ohtsubo, Mark Z. Chen, Jerold M. Olefsky and Jamey D. Marth
    • Organizer
      Annual Meeting of Society for Glycobiology
    • Place of Presentation
      Seattle USA
    • Year and Date
      2011-11-11
  • [Book] Sugar Chains2014

    • Author(s)
      Naoyuki Taniguchi, Tadashi Suzuki, Kazuaki Ohtsubo
    • Total Pages
      250
    • Publisher
      Springer
  • [Remarks] 理化学研究所プレスリリース

    • URL

      http://www.riken.jp/r-world/info/release/press/2011/110815/detail.html

URL: 

Published: 2015-06-25  

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