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An attempt to deal with saturated fatty acid-induced insulin resistance by the stiffness of the extracellular matrix

Research Project

Project/Area Number 22616005
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Mechanobiology
Research InstitutionThe University of Tokushima

Principal Investigator

LI Qinkai  徳島大学, 病院, 特任助教 (10571531)

Co-Investigator(Kenkyū-buntansha) FUNAKI Makoto  徳島大学, 病院, 特任教授 (10467821)
HATA Akiko  徳島大学, 病院, 学術研究員 (20570948)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords細胞外基質 / 硬度 / 脂肪細胞 / 慢性炎症 / 細胞外基質問 / 弾性
Research Abstract

We previously reported that 3T3-L1 adipocytes exhibit palmitate-induced proinflammatory response most prominently, when they are seeded on 2 -D matrices, which have a stiffness that correspond to that of obese adipose tissues. We then analyzed how mechanical properties of the matrices affect adipocyte functions, when they are seeded in a 3-D environment. Here we report that not only the stiffness of the matrices but also compression of the matrices regulate adipocyte functions.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (13 results)

All 2013 2012 2011 2010

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (9 results)

  • [Journal Article] Activation of Akt through 5-HT2A receptor ameliorates serotonin-induced degradation of insulin receptor substrate-1 in adipocytes2013

    • Author(s)
      李勤凱、保坂利男、原田永勝、中谷豊、船木真理
    • Journal Title

      Mol Cell Endocrinol

      Volume: 365(1) Pages: 25-35

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Activation of Akt through 5-HT2A receptor ameliorates serotonin-induced degradation of insulin receptor substrate-1 in adipocytes2013

    • Author(s)
      李勤凱
    • Journal Title

      Molecular and cellular endocrinology

      Volume: 365 Issue: 1 Pages: 25-35

    • DOI

      10.1016/j.mce.2012.08.022

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heparin-binding EGF-like growth factor (HB-EGF) mediates 5-HT-induced insulin resistance through activation of EGF receptor-ERK1/2-mTOR pathway2012

    • Author(s)
      Li Q, et al
    • Journal Title

      Endocrinology

      Volume: 153(1) Issue: 1 Pages: 56-68

    • DOI

      10.1210/en.2011-1418

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The density of extracellular matrix proteins regulates inflammation and insulin signaling in adipocytes.2010

    • Author(s)
      Li Q, et al.
    • Journal Title

      FEBS Letters

      Volume: 584 Pages: 4145-50

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Macrophages sense matrix rigidity and participate in development of chronic inflammation in adipose tissues.2012

    • Author(s)
      李勤凱
    • Organizer
      第55回日本糖尿病学会年次学術集会
    • Place of Presentation
      パシフィコ横浜(横浜市)
    • Year and Date
      2012-05-18
    • Related Report
      2012 Final Research Report
  • [Presentation] 5-HTは5HT2A受容体活性化を通じてIRS-1分解を誘発し、インスリン抵抗性を引き起す2011

    • Author(s)
      Qinkai Li
    • Organizer
      日本肥満学会
    • Place of Presentation
      淡路夢舞台国際会議場(淡路市)
    • Year and Date
      2011-09-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] An involvement of Rho-ROCK pathway for sensing matrix rigidity in obesity2011

    • Author(s)
      船木真理
    • Organizer
      アメリカ糖尿病学会
    • Place of Presentation
      San diego convention center (San diego, USA)
    • Year and Date
      2011-06-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] HB-EGF Mediates GPCR Agonist-Ipduced Insulin Resistance through Activation of EGFR-ERK1/2-mTOR Pathway in 3T3-L1 Adipocytes2011

    • Author(s)
      Qinkai Li
    • Organizer
      アメリカ糖尿病学会
    • Place of Presentation
      San diego convention center (San diego, USA)
    • Year and Date
      2011-06-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] HB-EGF mediates 5-HT-induced insulin resistance through activation of EGF receptor-ERK1/2-mTOR pathway2011

    • Author(s)
      Qinkai Li
    • Organizer
      日本糖尿病学会
    • Place of Presentation
      札幌プリンスホテル(北海道)
    • Year and Date
      2011-05-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] An involvement of Rho-ROCK pathway for sensing matrix rigidity in obesity2011

    • Author(s)
      船木真理
    • Organizer
      日本糖尿病学会
    • Place of Presentation
      ロイトン札幌(北海道)
    • Year and Date
      2011-05-19
    • Related Report
      2011 Annual Research Report
  • [Presentation] 3T3-L1 adipocytes become insensitive to palmitate-induced insulin resistance on soft matrices.2010

    • Author(s)
      Qinkai Li
    • Organizer
      アメリカ糖尿病学会
    • Place of Presentation
      Orange County Convention Center (Orlando, USA)
    • Year and Date
      2010-06-27
    • Related Report
      2010 Annual Research Report
  • [Presentation] A new direction to explore GLUT4 translocation in adipocytes ; regulation by the ECM rigidity2010

    • Author(s)
      船木真理
    • Organizer
      日本糖尿病学会
    • Place of Presentation
      岡山全日空ホテル(岡山県)
    • Year and Date
      2010-05-29
    • Related Report
      2010 Annual Research Report
  • [Presentation] 高弾性細胞外基質上では、パルミチン酸による3T3-L1脂肪細胞のアディポネクチン分泌抑制が見られない2010

    • Author(s)
      Qinkai Li
    • Organizer
      日本糖尿病学会
    • Place of Presentation
      岡山市デジタルミュージアム(岡山県)
    • Year and Date
      2010-05-28
    • Related Report
      2010 Annual Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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