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Elucidation of pancreatic beta-cell proliferation and differentiation mechanism by novel intestinal secretory protein IBCAP (betagenin).

Research Project

Project/Area Number 26670462
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Endocrinology
Research InstitutionSaitama Medical University

Principal Investigator

Yokoo Tomotaka  埼玉医科大学, 医学部, 助教 (80400688)

Co-Investigator(Renkei-kenkyūsha) OKAZAKI YASUSHI  埼玉医科大学, 医学部, 教授 (80280733)
TOYOSHIMA HIDEO  埼玉医科大学, 医学部, 客員准教授 (20197966)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords糖尿病 / 膵β細胞
Outline of Final Research Achievements

Betagenin is another intestine-specific secretory protein with β-cell augmenting activity, identified in our laboratory. In the current study, we investigated putative β-cell transdifferentiational function of betagenin. First, betagenin synthetic peptide, based on the sequence of the purified secreted protein, stimulated the proliferation of MIN6 cells. In addition, we have results suggesting that betagenin may contribute to the induction of iPS cell differentiation to β-cells. Our findings indicate that betagenin have an activity to induce not only proliferation but also differentiation of β-cells. Betagenin may be used as a potent inducer for pancreatic β-cell regeneration.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (4 results)

All 2015 2014

All Presentation (4 results) (of which Invited: 1 results)

  • [Presentation] 新規消化管ホルモン Betagenin は膵β細胞の増殖を刺激し 糖尿病を改善する2015

    • Author(s)
      横尾友隆、渡邉和寿、飯田薫子、鈴木浩明、高島成二、島野仁、山田信博、岡崎康司、豊島秀男
    • Organizer
      第13回 RCGMフロンティアシンポジウム
    • Place of Presentation
      埼玉医科大学創立30週年記念講堂(埼玉県日高市)
    • Year and Date
      2015-10-31
    • Related Report
      2015 Annual Research Report
  • [Presentation] Betagenin, a novel intestinal hormone, increases β-cell and alleviates diabetes.2015

    • Author(s)
      Hideo Toyoshima, Tomotaka Yokoo
    • Organizer
      第58回 日本糖尿病学会年次学術集会
    • Place of Presentation
      下関市民会館(山口県下関市)
    • Year and Date
      2015-05-23
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Effect of Betagenin on Pancreatic beta-cell Proliferation and Differentiation2014

    • Author(s)
      Tomotaka Yokoo, Yizumi Yamashita Sugawara, Kazuhisa Watanabe, Kaoruko Tada Iida, Hiroaki Suzuki, Hitoshi Shimano, Nobuhiro Yamada, Yasushi Okazaki, Hideo Toyoshima
    • Organizer
      第12回 RCGMフロンティア国際シンポジウム
    • Place of Presentation
      埼玉医科大学30周年記念講堂(埼玉県日高市)
    • Year and Date
      2014-10-31 – 2014-11-01
    • Related Report
      2014 Research-status Report
  • [Presentation] iPS細胞を用いた、新規消化管ホルモンIBCAPが膵β細胞分化に与える影響の検討2014

    • Author(s)
      菅原 泉、横尾 友隆、渡邊 和寿、飯田 薫子、鈴木 浩明、島野 仁、山田 信博、岡﨑 康司、豊島 秀男
    • Organizer
      第57回 日本糖尿病学会年次学術集会
    • Place of Presentation
      大阪国際会議場(大阪府大阪市)
    • Year and Date
      2014-05-22
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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