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Elucidating a role of cross-talk between endothelial cell and adipocyte in the maintenace of adipose tissue homeostasis

Research Project

Project/Area Number 16K09524
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Cardiovascular medicine
Research InstitutionKobe Pharmaceutical University

Principal Investigator

KOJI IKEDA  神戸薬科大学, 薬学部, 准教授 (90423871)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords肥満 / メタボリック症候群 / 脂肪組織 / インスリンシグナル / 血管新生 / 代謝異常 / 肥満関連代謝異常 / 血管内皮細胞 / 糖尿病 / トランスレーショナルリサーチ / 血管生物学
Outline of Final Research Achievements

We have identified two candidate genes, Nrg4 and Fam13a, which are involved in the pathogensis of obesity and its-related metabolic disorders. We found that Fam13a accentuated adipocyte insulin signaling by inhibiting proteasomal degradation of IRS-1. Genetic deletion of Fam13a improved systemic metabolic health in mice through preserving adipose tissue insulin signaling. On the other hand, we revealed that Nrg4 is a novel angiogenic adipokine. Loss of Nrg4 caused reduction in adipose tissue vasculatures, and exacerbated obesity and its-related metabolic disorders. Because Fam13a and Nrg4 expression in adipocytes substantially decreased during obesity, activation of Fam13a and/or Nrg4 has a therapeutic potential for obesity-related metabolic disorders.

Academic Significance and Societal Importance of the Research Achievements

肥満やメタボリック症候群は、動脈硬化を進展させて心血管疾患の発症リスクを増大させるため、その健康被害は甚大です。私達はこれら病態に関わる2つの遺伝子(Fam13aとNrg4)を発見し、その機能を解明しました。本研究成果によって、肥満・代謝異常の未知の仕組みが明らかになったとともに、Fam13aおよびNrg4の活性化が肥満・メタボリック症候群の発症を予防する効果が示されたことは大変意義深いです。

Report

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

    (6 results)

All 2018 2017 2016

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

  • [Journal Article] Family with sequence similarity 13, member A modulates adipocyte insulin signaling and preserves systemic metabolic homeostasis2018

    • Author(s)
      Wardhana Donytra Arby、Ikeda Koji、Barinda Agian Jeffilano、Nugroho Dhite Bayu、Qurania Kikid Rucira、Yagi Keiko、Miyata Keishi、Oike Yuichi、Hirata Ken-ichi、Emoto Noriaki
    • Journal Title

      Proc Natl Acad Sci U S A

      Volume: 115 Issue: 7 Pages: 1529-1534

    • DOI

      10.1073/pnas.1720475115

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Neuregulin-4 is an angiogenic factor that is critically involved in the maintenance of adipose tissue vasculature.2018

    • Author(s)
      Nugroho DB, Ikeda K, Barinda AJ, Wardhana DA, Yagi K, Miyata K, Oike Y, Hirata KI, Emoto N.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 503 Issue: 1 Pages: 378-484

    • DOI

      10.1016/j.bbrc.2018.06.043

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Activation of neuregulin-4 in adipocytes improves metabolic health by enhanceing adipose tissue angiogenesis.2018

    • Author(s)
      Nugroho DB, Ikeda K, Kajimoto K, Hirata KI, Emoto N.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 504 Issue: 2 Pages: 427-433

    • DOI

      10.1016/j.bbrc.2018.08.197

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Family with sequence similarity 13, member A (Fam13a) preserves metabolic health by regulating adipocyte insulin signaling2018

    • Author(s)
      Wardhana DA
    • Organizer
      日本循環器学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Signaling cross talk between adipocyte and endothelial cell via neuregulin-4 regulates adipose angiogenesiss and metabolic homeostasis2017

    • Author(s)
      Dhite B. Nugroho, Koji Ikeda, Noriaki Emoto, Ken-ichi Hirata
    • Organizer
      第81回日本循環器学会総会
    • Place of Presentation
      金沢
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Angiogenic adipokine Neuregulin-4 ameliorates adipocyte dysfunction associated with obesity by regulating adipose tissue angiogenesis2016

    • Author(s)
      Dhite Bayu Nugroho, Koji Ikeda, Agian Jeffilano Barinda, Donytra Arby Wardhana, Ken-ichi Hirata, Noriaki Emoto
    • Organizer
      American Heart Association 2016 Scientific Session
    • Place of Presentation
      New Orleans, Louisiana
    • Year and Date
      2016-11-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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

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