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Elucidation of the mechanisms and pharmacological target for metabolic syndrome by analyzing endoplasmic reticulum stress, which is mediated through physiological factor and cell-to-cell communication

Research Project

Project/Area Number 16K08271
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pharmacology in pharmacy
Research InstitutionHiroshima University

Principal Investigator

Hosoi Toru  広島大学, 医歯薬保健学研究科(薬), 准教授 (40379889)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsレプチン / 小胞体ストレス / グリア細胞 / 神経細胞
Outline of Final Research Achievements

Obesity is one of the risk factors of the metabolic syndrome, such as diabetes. Therefore, elucidation of the mechanisms of the obesity may be an important subject with respect to preventive medicine. In the present study, we investigated mechanisms of the endoplasmic reticulum (ER) stress-induced obesity and metabolic syndrome, and tried to elucidate the therapeutic target for the disease. In the present study, we found that saturation of neuronal membrane fatty acid may cause leptin resistance. Also, we found glial cell may play an important role in neuronal leptin signal transduction. Furthermore, we found possibility that flurbiprofen may attenuate diabetes, suggesting that reducing ER stress by flurbiprofen may be able to ameliorate metabolic syndrome.

Academic Significance and Societal Importance of the Research Achievements

レプチンは、脂肪細胞から分泌され、体重を減少させるタンパク質である。一方、最近ではレプチン抵抗性が肥満の原因として問題視されている。従って、レプチン抵抗性の原因を明らかにすることは、肥満の治療に重要であると考えられる。そこで本研究では、レプチン抵抗性の形成機構の解明を目指して研究を行なった。その結果、神経細胞膜の脂肪酸の飽和化がレプチン抵抗性形成に関わる可能性が明らかになった。さらに私たちはグリア細胞が神経細胞におけるレプチンシグナルを制御する可能性も見いだした。これらの結果は、新しいレプチン抵抗性の形成機序の一端を示すもので、レプチン抵抗性による肥満発症機構解明に寄与できると考えられる。

Report

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

    (18 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Acknowledgement Compliant: 6 results,  Open Access: 4 results) Presentation (6 results)

  • [Int'l Joint Research] INSERM(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Institute Cochin(フランス)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Immobilization stress induces XBP1 splicing in the mouse brain.2019

    • Author(s)
      Hosoi T, Kimura H, Yamawaki Y, Mori K, Ozawa K
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 508 Issue: 2 Pages: 516-520

    • DOI

      10.1016/j.bbrc.2018.11.167

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Endospanin 1 affects oppositely body weight regulation and glucose homeostasis by differentially regulating central leptin signaling.2017

    • Author(s)
      Vauthier V., Roujeau C., Chen P., Sarkis C., Migrenne S., Hosoi T., Ozawa K., Rouille Y., Foretz M., Mallet J., Launay J., Magnan C., Jockers R. and Dam J.
    • Journal Title

      Molecular Metabolism

      Volume: 6 Issue: 1 Pages: 159-172

    • DOI

      10.1016/j.molmet.2016.10.009

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Loss of Stearoyl-CoA Desaturase-1 Activity Induced Leptin Resistance in Neuronal Cells2017

    • Author(s)
      Thon M., Hosoi T., Chanbora C., and Ozawa K.
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 40 Issue: 8 Pages: 1161-1164

    • DOI

      10.1248/bpb.b17-00311

    • NAID

      130005876267

    • ISSN
      0918-6158, 1347-5215
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Mechanisms and Pharmacological Strategy for Treatment of ER Stress-induced Metabolic Syndrome2016

    • Author(s)
      Hosoi T, Ozawa K.
    • Journal Title

      YAKUGAKU ZASSHI

      Volume: 136 Issue: 6 Pages: 827-830

    • DOI

      10.1248/yakushi.15-00292-5

    • NAID

      130005154182

    • ISSN
      0031-6903, 1347-5231
    • Year and Date
      2016-06-01
    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Key role of heat shock protein 90 in leptin-induced STAT3 activation and feeding regulation.2016

    • Author(s)
      Hosoi T, Kohda T, Matsuzaki S, Ishiguchi M, Kuwamura A, Akita T, Tanaka J, Ozawa K.
    • Journal Title

      Br J Pharmacol.

      Volume: 173 Issue: 15 Pages: 2434-2445

    • DOI

      10.1111/bph.13520

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Possible Pharmacological Approach Targeting Endoplasmic Reticulum Stress to Ameliorate Leptin Resistance in Obesity.2016

    • Author(s)
      Hosoi T, Ozawa K.
    • Journal Title

      Front Endocrinol

      Volume: 7 Pages: 59-59

    • DOI

      10.3389/fendo.2016.00059

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Dehydroascorbic acid-induced endoplasmic reticulum stress and leptin resistance in neuronal cells.2016

    • Author(s)
      Thon M, Hosoi T, Ozawa K.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 478 Issue: 2 Pages: 716-720

    • DOI

      10.1016/j.bbrc.2016.08.013

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Insulin enhanced leptin-induced STAT3 signaling by inducing GRP78.2016

    • Author(s)
      Thon M, Hosoi T, Ozawa K.
    • Journal Title

      Sci Rep.

      Volume: 6 Issue: 1 Pages: 34312-34312

    • DOI

      10.1038/srep34312

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Flurbiprofen Ameliorates Glucose Deprivation-Induced Leptin Resistance.2016

    • Author(s)
      Hosoi T, Suyama Y, Kayano T, Ozawa K.
    • Journal Title

      Front Pharmacol.

      Volume: 7 Pages: 354-354

    • DOI

      10.3389/fphar.2016.00354

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Possible Integrative Actions of Leptin and Insulin Signaling in the Hypothalamus Targeting Energy Homeostasis.2016

    • Author(s)
      Thon M, Hosoi T, Ozawa K.
    • Journal Title

      Front Endocrinol

      Volume: 7 Pages: 138-138

    • DOI

      10.3389/fendo.2016.00138

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] フルルビプロフェンの小胞体ストレス軽減効果による糖尿病抑制の可能性2019

    • Author(s)
      松浦 武典,細井 徹,松﨑 周,親泊 政一,小澤 光一郎
    • Organizer
      第92回日本薬理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 正常ならびに肥満病態時のグリア細胞の神経細胞におけるレプチンシグナルへの役割2018

    • Author(s)
      松村 奈美,細井 徹,長谷川 由貴,小澤 光一郎
    • Organizer
      第57回 日本薬学会・日本薬剤師会・日本病院薬剤師会 中国四国支部学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] レプチン抵抗性形成への4-hydroxy-2-nonenalの関わり2017

    • Author(s)
      細井 徹, 桑村彩加, 小澤光一郎
    • Organizer
      第90回日本薬理学会年会
    • Place of Presentation
      長崎市
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Insulin potentiated leptin-induced anti-obesity signal through GRP78 in neurons2017

    • Author(s)
      トン・ミナ, 細井 徹, 小澤光一郎
    • Organizer
      第131回日本薬理学会近畿部会
    • Related Report
      2017 Research-status Report
  • [Presentation] 脂肪酸によるレプチン応答性変化の系統的解析2017

    • Author(s)
      荻野陽平,田中智洋,金子賢太朗,園山拓洋,Guo Tingting,雲財知,小山博之,青谷大介,今枝憲郎,細井 徹,中尾一和
    • Organizer
      第38回日本肥満学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 小胞体ストレス応答シグナルIRE1-XBP1経路に対するプロテインキナーゼCの影響2017

    • Author(s)
      森本純加,細井 徹,末澤隆宏,櫨木薫,櫨木 修,小澤光一郎
    • Organizer
      第56回 日本薬学会 日本薬剤師会 日本病院薬剤師会 中国四国支部学術大会
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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