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Molecular Characterization of Short-chain Fatty Acid receptor GPR41 and GPR43 in cat

Research Project

Project/Area Number 19K06409
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionNippon Veterinary and Life Science University

Principal Investigator

Yamamoto Ichiro  日本獣医生命科学大学, 獣医学部, 准教授 (00424763)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsネコ / GPR41 / GPR43 / 短鎖脂肪酸 / FFAR2 / FFAR3 / GPR41/FFAR3 / GPR43/FFAR2
Outline of Research at the Start

本研究課題はネコのGPR41とGPR43の受容体としての機能を細胞内シグナル伝達解析、NanoBiT法による2量体形成解析、発現部位を免疫染色またはIn situ hybridization解析、GPR41とGPR43遺伝子中の一塩基多型(SNP)探索をサーベイヤー解析によって行う。SNP探索により将来肥満するネコを出生時に予測するゲノム診断技術の開発に寄与するものである。

Outline of Final Research Achievements

G protein-coupled receptors (GPRs) 41 and 43 were identified and characterized as free fatty acid receptors (FFARs) 3 and 2, respectively. FFAR2 and FFAR3 mediate short-chain fatty acids (SCFAs) as signaling molecules. The present study aimed to molecularly characterize FFAR2 and FFAR3 to study lipid metabolism in the domestic cat. cDNA cloning of cat FFAR2/3 revealed high homology with that in other mammals. Tissue distribution of cat FFAR2 and FFAR3 mRNA was analyzed by qPCR. Inhibition of intracellular cAMP concentrations was observed in cells transfected with cat FFAR2 or FFAR3 and treated with propionate and acetate. Split luciferase assay (NanoBiT) revealed homo/heterodimerization in HEK293 cells transfected with cat FFAR2 and/or FFAR3. These results indicate that the functional receptor proteins, FFAR2 and FFAR3, are expressed in cat tissues and show differential distribution patterns.

Academic Significance and Societal Importance of the Research Achievements

ヒト同様、ネコも2型糖尿病が多い動物であり、過度の脂肪が蓄積され肥満した結果、糖尿病を発病する。脂肪を構成する脂肪酸は必須栄養素のみならず、生理機能をもつシグナル伝達物質としても作用する。2003年以降、数々の脂肪酸に対するヒトGタンパク質共役型受容体GPR40、GPR41、 GPR43、 GPR120が発見され、異なる生理作用を介することが明らかとなった。ネコは幼猫期に多量の脂肪酸DHAを必要とする等、他の動物とは異なる脂肪酸の代謝経路を持つことから、本研究では特に短鎖脂肪酸の受容体GPR41とGPR43の機能を分子生物学的な解析を行なった。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (4 results)

All 2020

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

  • [Journal Article] Molecular characterization of free fatty acid receptors FFAR2 and FFAR3 in the domestic cat2020

    • Author(s)
      Yamamoto Ichiro、Kawasumi Koh、Ohkusu‐Tsukada Kozo、Arai Toshiro
    • Journal Title

      Veterinary Medicine and Science

      Volume: 7 Issue: 1 Pages: 77-85

    • DOI

      10.1002/vms3.356

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] <p>Effects of Age on Inflammatory Profiles and Nutrition/Energy Metabolism in Domestic Cats</p>2020

    • Author(s)
      Mizorogi Takayuki、Kobayashi Motoo、Ohara Kenji、Okada Yuki、Yamamoto Ichiro、Arai Toshiro、Kawasumi Koh
    • Journal Title

      Veterinary Medicine: Research and Reports

      Volume: Volume 11 Pages: 131-137

    • DOI

      10.2147/vmrr.s277208

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Changes in energy metabolism of healthy cats with aging2020

    • Author(s)
      Takayuki Mizorogi, Motoo Kobayashi, Kenji Ohara, Yuki Okada, Ichiro Yamamoto, Toshiro Arai and Koh Kawasumi.
    • Organizer
      19th International Society for Animal Clinical Pathology (ISACP) Virtual Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Changes in plasma metabolites concentrations in riding horses supplemented with anti-oxidant and anti-inflammatory compound.2020

    • Author(s)
      Amane Suzuki, Kumi Mashiyama, Hitomi Onodera, Yuki Okada, Ichiro Yamamoto, Kohei Suruga, Kazunari Kadokura, Toshiro Arai and Koh Kawasumi.
    • Organizer
      19th International Society for Animal Clinical Pathology (ISACP) Virtual Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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