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The system of energy regulation by guanylin and its receptor expressed macrophages

Research Project

Project/Area Number 16K07300
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Functional biochemistry
Research InstitutionUniversity of Miyazaki

Principal Investigator

AKIEDA SAYAKA  宮崎大学, フロンティア科学実験総合センター, 准教授 (20549076)

Research Collaborator DATE yukari  
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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsマクロファージ / 肥満 / 脂肪細胞 / 生理活性物質 / エネルギー代謝調節
Outline of Final Research Achievements

Guanylin (Gn), a bioactive peptide, and its receptor, guanylyl cyclase-C (GC-C), are primarily present in the intestine and function to maintain homeostasis of body fluid. Recently, we found that rats whose macrophages overexpress Gn and GC-C, are resistant to diet-induced obesity. In this study, we demonstrate that a HFD failed to induce a chronic inflammatory state in the mesenteric fat of rats that overexpressed both Gn and GC-C in their macrophages. In addition, we showed that the Gn-GC-C system in macrophages regulates the cGMP-PKG-VASP system, decreasing inflammatory factors such as TNFα, Cox-2, and iNOS through the inhibition of the NF-κB pathway. Our data provide new insight into the development of treatments for obesity and related diseases.

Academic Significance and Societal Importance of the Research Achievements

申請者は、高脂肪食耐性ラットの内臓脂肪組織内マクロファージにおいてGn/GC-Cが高発現していることを見出した。腸管上皮においては、Gn/GC-Cは、水や電解質の調節に機能することがよく知られている。しかし、これまでマクロファージにおけるGn/GC-Cシステムの機能や肥満との関連については研究がされていなかった。本研究の成果は、マクロファージのGn/GC-Cシステムが肥満制御に機能的な意義を持つ生体制御システムであることを解明するものであり、生活習慣病予防や治療に寄与するメカニズムを解明できる可能性がある。

Report

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

    (12 results)

All 2018 2017 2016 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Influence of food texture on energy metabolism and adiposity in male rats2018

    • Author(s)
      Han W, Utoyoma M, Akieda-Asai S, Hidaka A, Yamada C, Hasegawa K, Nunoi H, Date Y
    • Journal Title

      Experimental Physiology

      Volume: 103 Pages: 1347-1356

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interleukin-15 derived from Guanylin-GC-C-expressing macrophages inhibits fatty acid synthase in adipocytes2018

    • Author(s)
      Akieda-Asai S, Ida T, Miyazato M, Kangawa K, Date Y
    • Journal Title

      Peptides

      Volume: 99 Pages: 14-19

    • DOI

      10.1016/j.peptides.2017.10.012

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Guanylyl cyclase C and guanylin reduce fat droplet accumulation in cattle mesenteric adipose tissue2017

    • Author(s)
      Yasuda M, Kawabata J, Akieda-Asai S, Nasu T, Date Y
    • Journal Title

      J Vet Sci

      Volume: 18(3) Issue: 3 Pages: 341-348

    • DOI

      10.4142/jvs.2017.18.3.341

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 食物の性状の違いがエネルギー代謝や脂肪蓄積に及ぼす影響2018

    • Author(s)
      Han W, Utoyama M, Akieda-Asai S, Date Y
    • Organizer
      第91回アディポサイエンス研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] グアニリンおよびグアニル酸シクラーゼC高発現マクロファージ由来のIL-15は脂肪細胞の脂肪酸合成を抑制する2018

    • Author(s)
      秋枝さやか, 井田隆徳, 宮里幹也, 伊達紫
    • Organizer
      第91回日本内分泌学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 食物の性状が腸内グルコーストランスポーターや腸内微生物に及ぼす影響2017

    • Author(s)
      秋枝さやか, Han Wanxin, 宇藤山麻衣子, 伊達紫
    • Organizer
      第90回日本内分泌学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 軟食自由摂食ラットにおける内臓脂肪蓄積と摂食調節因子.2017

    • Author(s)
      宇藤山麻衣子, Han Wanxin, 秋枝さやか, 伊達紫
    • Organizer
      平成29年度日本生化学会九州支部例会
    • Related Report
      2017 Research-status Report
  • [Presentation] Effects of food texture on the expressions of glucose transporters and gut microbiota in rats.2017

    • Author(s)
      Han Wanxin, 秋枝さやか, 宇藤山麻衣子, 伊達紫
    • Organizer
      平成29年度日本生化学会九州支部例会
    • Related Report
      2017 Research-status Report
  • [Presentation] Sex differences in high-fat diet-induced obesity in rats.2017

    • Author(s)
      Akieda-Asai S, Date Y
    • Organizer
      Gender Summit 10, Satellite Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 食物の性状が糖代謝や脂質代謝に及ぼす影響2017

    • Author(s)
      秋枝さやか, 伊達紫
    • Organizer
      ConBio2017
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 延髄-視床下部の神経遮断ラットにおけるエネルギー代謝の検討.2016

    • Author(s)
      宇藤山麻衣子, 秋枝さやか, 幸田修一, 布井博幸, 伊達紫
    • Organizer
      第43回神経内分泌学会
    • Place of Presentation
      浜松
    • Related Report
      2016 Research-status Report
  • [Remarks] 宮崎大学フロンティア科学実験総合センター生理活性物質機能解析分野

    • URL

      http://www.med.miyazaki-u.ac.jp/peptides/date/jp/

    • Related Report
      2017 Research-status Report

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

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