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Evaluation of a mechanism of lifestyle-related diseases focusing on the initiate-regulation of adipocyte differentiation by the clock system

Research Project

Project/Area Number 16K18954
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Medical pharmacy
Research InstitutionTokyo University of Science, Yamaguchi (2019)
Jichi Medical University (2016-2018)

Principal Investigator

Ushijima Kentaro  山陽小野田市立山口東京理科大学, 薬学部, 教授 (70448843)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords時計遺伝子 / インスリン感受性 / 脂肪細胞分化 / 前駆脂肪細胞 / 糖尿病
Outline of Final Research Achievements

The animal experiments using ob/ob mice showed that the distribution of adipocytes was shifted to a smaller cell size and insulin sensitivity was improved by entinostat. These changes were considered to be due to the increased expression of
Ppar-γ (regulator of adipocyte differentiation) mediated by the increase of DBP protein.
In a study using human visceral adipose tissue, mRNA expressions of Dbp and Ppar-γ were also significantly lower in type 2 diabetic patients than in non-diabetic patients. These observations were similar to those in animal experiments. Such a difference between type 2 diabetic patients and non-diabetic patients was observed in omental adipose tissue, but not in mesenteric adipose tissue.

Academic Significance and Societal Importance of the Research Achievements

本研究により、脂肪細胞の分化調節における時計遺伝子Dbpの役割が明らかとなった。また、糖尿病における内臓脂肪内Dbp発現量の低下はマウスのみならず、ヒト内臓脂肪組織(大網脂肪)においても同様に観察された。これらの成果は、体内時計による恒常性維持機構の理解に新たな知見を与えるものである。
今後、Dbp発現量を上昇させる手法を開発することで、新たな糖尿病の治療方法を開拓できると期待できる。また、糖尿病患者の内臓脂肪組織においてDbp発現が低下している主原因を明らかにすることで、新たな病態解明や疾患発症リスクを提唱できる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (3 results) (of which Invited: 2 results) Remarks (3 results)

  • [Int'l Joint Research] Division of Endocrinology/Feinberg School of Medicine/Northwestern University(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Division of Endocrinology/Feinberg School of Medicine/Northwestern University(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Influence of renal ischemia-reperfusion injury on renal neutrophil gelatinase-associated lipocalin receptor (24p3R) in rats.2019

    • Author(s)
      Arakawa Y, Ushijima K, Tsuchiya H, Morishige JI, Mii A, Ando H, Tsuruoka SI, Fujimura A.
    • Journal Title

      Clin Exp Pharmacol Physiol

      Volume: 46 Issue: 12 Pages: 1166-1173

    • DOI

      10.1111/1440-1681.13129

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Induction of Dbp by a histone deacetylase inhibitor is involved in amelioration of insulin sensitivity via adipocyte differentiation in ob/ob mice.2019

    • Author(s)
      1.Suzuki C, Ushijima K#, Ando H, Kitamura H, Horiguchi M, Akita T, Yamashita C, Fujimura A.
    • Journal Title

      Chronobiology International

      Volume: 印刷中 Issue: 7 Pages: 955-968

    • DOI

      10.1080/07420528.2019.1602841

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 脂肪細胞分化における時計遺伝子Dbpの関与2018

    • Author(s)
      鈴木智理、牛島健太郎、安藤仁、北村広子、秋田智后、今井靖、山下親正、藤村昭夫
    • Organizer
      日本薬学会第138年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 体内時計システムを活用した臨床薬理学研究ならびに毒性学研究2017

    • Author(s)
      牛島健太郎、安藤仁、藤村昭夫
    • Organizer
      第44回 日本毒性学会学術年会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 生体リズム研究の医療応用と3Rの促進に向けた取り組み2016

    • Author(s)
      牛島健太郎、安藤仁、藤村昭夫
    • Organizer
      第29回日本動物実験代替法学会
    • Place of Presentation
      九州大学百年記念講堂(福岡市)
    • Year and Date
      2016-11-16
    • Related Report
      2016 Research-status Report
    • Invited
  • [Remarks] Researchmap webページ

    • URL

      https://researchmap.jp/ken_ushijima

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
  • [Remarks] researchmap webページ

    • URL

      https://researchmap.jp/ken_ushijima

    • Related Report
      2017 Research-status Report
  • [Remarks] 自治医科大学医学部 臨床薬理学部門研究室ホームページ

    • URL

      http://www.jichi.ac.jp/rinshoyakuri/

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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