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Repression of neuroinflammation by short- and medium-chain fatty acids

Research Project

Project/Area Number 20K06397
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 InstitutionOsaka Metropolitan University (2022)
Osaka Prefecture University (2020-2021)

Principal Investigator

Moriyama Mitsuaki  大阪公立大学, 大学院獣医学研究科, 教授 (20275283)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords神経炎症 / グリア細胞 / ミクログリア / アストロサイト / 神経化学 / 短鎖脂肪酸 / 中鎖脂肪酸 / 中枢炎症 / 酸化ストレス
Outline of Research at the Start

神経変性疾患の病因をグリア細胞による神経炎症と捉え、その病態変化を短鎖および中鎖脂肪酸が予防・改善しうるか明らかにする。In vitro神経炎症モデルとして (1) LPS 誘発性モデルと (2) 細胞外高アンモニアモデルを設定し、培養ミクログリアおよびアストロサイトに対する短鎖及び中鎖脂肪酸の効果を検討する。さらにin vivo神経炎症モデルとして (3) 脳室内LPS投与モデルラットと (4) チオアセトアミド誘発肝性脳症モデルラットを作成し、食餌により血中短鎖・中鎖脂肪酸濃度を増加させることが病態の予防・改善に繋がるか否かを検証する。

Outline of Final Research Achievements

Glial inflammation is a common characteristic in neuroinflammation in neurodegenerative diseases such as Parkinson’s disease and Alzheimer’s disease. We investigated the role of short- and medium-chain fatty acids in glial inflammatory responses. We found that short- or medium-chain fatty acids inhibited microglial inflammatory responses such as NO, ROS production and phagocytotic activity. The results obtained potentiate the possibility that short- and medium-chain fatty acids are effective therapeutic drug for neurodegenerative diseases.

Academic Significance and Societal Importance of the Research Achievements

神経炎症反応が進むことにより神経変性疾患の病態が増悪・進行することから、これを抑える方法の開発は喫緊の課題である。本課題では短鎖および中鎖脂肪酸が中枢グリア細胞の炎症反応を抑制し神経炎症を軽減可能なことを明らかにした。短鎖および中鎖脂肪酸は食を介して摂取可能であり、既存の治療薬と比較して副作用も少ないと考えられる。神経変性疾患の治療に対する短鎖および中鎖脂肪酸の新たな可能性を提示した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (3 results)

  • [Journal Article] Increase in cellular lysophosphatidylserine content exacerbates inflammatory responses in LPS-activated microglia.2021

    • Author(s)
      Tomoki Minamihata, Katsura Takano, Yoichi Nakamura, Ryoya Seto, Mitsuaki Moriyama
    • Journal Title

      Neurochemical Research

      Volume: - Issue: 9 Pages: 2602-2616

    • DOI

      10.1007/s11064-021-03425-8

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Lysophosphatidylinositol, an endogenous ligand for G protein-coupled receptor 55, has anti-inflammatory effects in cultured microglia.2020

    • Author(s)
      Minamihata T, Moriyama M, Takano K, Nakamura Y.
    • Journal Title

      Inflammation

      Volume: 43 Issue: 5 Pages: 1971-1987

    • DOI

      10.1007/s10753-020-01271-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] AGC2 (Citrin) deficiency-From recognition of the disease till construction of therapeutic procedures.2020

    • Author(s)
      Saheki T, Moriyama M, Funahashi A, Kuroda E.
    • Journal Title

      Biomolecules

      Volume: 10 Issue: 8 Pages: 1100-1100

    • DOI

      10.3390/biom10081100

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acetate suppresses lipopolysaccharide-stimulated nitric oxide production in primary rat microglia but not in BV-2 microglia cells.2020

    • Author(s)
      Moriyama M, Nishimura Y, Kurebayashi R, Minamihata T, Kawabe K, Takano K, Nakamura Y.
    • Journal Title

      Curr Mol Pharmacol. [Epub ahead of print]

      Volume: Epub Issue: 2 Pages: 253-260

    • DOI

      10.2174/1874467213666200420101048

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Sphingosine kinase 1 inhibition exacerbates neuronal damage in neuron/glia mixed culture via glial inflammatory responses and decreased amyloid beta uptake by microglia.2022

    • Author(s)
      Minamihata T, Takano K, Moriyama M.
    • Organizer
      第65回日本神経化学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Increase in intracellular lysophosphatidylserine content exacerbates inflammatory response by cultured microglia2021

    • Author(s)
      Minamihata T, Takano K, Moriyama M, Nakamura Y.
    • Organizer
      第64回日本神経化学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Lysophosphatidylinositol suppressed inflammatory responses by cultured microglia2020

    • Author(s)
      Minamihata Tomoki, Moriyama Mitsuaki, Takano Katsura, Nakamura Yoichi
    • Organizer
      第63回日本神経化学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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