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Investigation of the role of PXR-SGK2 signaling in drug-induced diabetes

Research Project

Project/Area Number 16K21055
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Biological pharmacy
Pharmacology in pharmacy
Research InstitutionTokyo Metropolitan Institute of Medical Science (2017-2019)
Kanazawa University (2016)

Principal Investigator

GOTOH-SAITO Saki  公益財団法人東京都医学総合研究所, ゲノム医科学研究分野, 研究員 (60756609)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords遺伝子発現制御 / 核内受容体 / 脂肪酸のβ 酸化 / シグナル伝達 / 脂質代謝 / 脂肪酸のβ酸化 / ヒト肝細胞 / 転写 / 脂肪酸のb酸化 / 糖尿病
Outline of Final Research Achievements

Xenobiotic-sensing nuclear receptor, pregnane X receptor (PXR) may play a functional role in hepatic energy metabolism. However, the molecular mechanism remains unknown in humans. In this study, we demonstrated that drug-activated PXR increased mRNA expression of fatty acid β-oxidation-related genes, including CPT1A and ACSL1 in human hepatocellular carcinoma cells. PXR required serum/glucocorticoid regulated kinase 2 (SGK2) in the regulation. Furthermore, we identified PXR/SGK2 binding site within the 5’ upstream region of CPT1A gene in a drug-dependent manner. These results suggest the possibility that PXR utilizes SGK2 to regulate fatty acid β-oxidation.

Academic Significance and Societal Importance of the Research Achievements

PXR はこれまで薬物動態制御における機能に焦点が置かれてきた。本研究では PXR がSGK2 と協調して脂肪酸のβ酸化関連酵素遺伝子を制御することを明らかにした。肝臓での脂肪酸のβ酸化は糖新生の促進に寄与する。したがって、我々がこれまでに報告した PXR/SGK2 経路を介した糖新生制御と関連して、効率的に糖産生を増加させることが、薬剤誘発性糖尿病の発症原因となる可能性が示された。これらの成果は、糖尿病に対する安全性の高い創薬研究に有益な情報を提供するとともに、薬剤誘発性糖尿病の治療戦略に役立つことが期待される。

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

    (5 results)

All 2019 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results)

  • [Journal Article] Characterization of human UGT2A3 expression using a prepared specific antibody against UGT2A32019

    • Author(s)
      Gotoh-Saito Saki、Abe Takayuki、Furukawa Yoichi、Oda Shingo、Yokoi Tsuyoshi、Finel Moshe、Hatakeyama Masahiko、Fukami Tatsuki、Nakajima Miki
    • Journal Title

      Drug Metabolism and Pharmacokinetics

      Volume: 34 Issue: 4 Pages: 280-286

    • DOI

      10.1016/j.dmpk.2019.05.001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Glucose elicits serine/threonine kinase VRK1 to phosphorylate nuclear pregnane X receptor as a novel hepatic gluconeogenic signal2017

    • Author(s)
      Gotoh Saki、Miyauchi Yuu、Moore Rick、Negishi Masahiko
    • Journal Title

      Cellular Signalling

      Volume: 40 Pages: 200-209

    • DOI

      10.1016/j.cellsig.2017.09.003

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 肝糖新生における核内受容体 PXR のグルコースセンサーとしての新機能解明2017

    • Author(s)
      後藤紗希、Rick Moore、Masahiko Negishi
    • Organizer
      Conference for BioSignal and Medicine (CBSM) 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] スタチン誘導性脂質代謝おけるPXR-SGK2シグナル経路の役割2016

    • Author(s)
      後藤 紗希, 沓掛 貴矢, 中島 美紀
    • Organizer
      第39回日本分子生物学会年会
    • Place of Presentation
      パシフィコ横浜 (神奈川県・横浜市)
    • Year and Date
      2016-11-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 核内受容体 PXR によるグルコースシグナル伝達の肝糖新生制御の解明2016

    • Author(s)
      後藤 紗希, 宮内 優, Rick Moore, 根岸 正彦
    • Organizer
      H28内外環境応答・代謝酵素研究会
    • Place of Presentation
      静岡県立大学薬学部 (静岡県・静岡市)
    • Year and Date
      2016-09-17
    • Related Report
      2016 Research-status Report

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

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