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Elucidation of the molecular basis of neurogenesis by regulation of fatty acid composition

Research Project

Project/Area Number 20K19669
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

OHNO Hiroshi  筑波大学, 医学医療系, 助教 (20847909)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords脂肪酸 / スフィンゴ脂質 / 神経幹細胞 / 脳 / マイクロドメイン / 脂質ラフト
Outline of Research at the Start

Elovl6は脂肪酸の炭素鎖長をC16からC18へ伸長する酵素である。脳特異的Elovl6欠損マウスでは神経新生の低下と記憶・学習障害が認められる。また、神経幹細胞培養では、Elovl6の欠損により神経幹細胞の自己複製能の低下が認めらる。そこで、本研究では、Elovl6による神経幹細胞の自己複製能の制御に重要な脂質およびその構成脂肪酸分子種をリピドミクス解析により特定し、その分子メカニズムを解明する。さらに、特定した脂質分子をElovl6欠損マウス、老化マウスやアルツハイマー病モデルマウスへ投与して神経新生の回復が認められるかを検討する。

Outline of Final Research Achievements

In this study, we aimed to elucidate the molecular mechanisms underlying the impaired neurogenesis found in CNS-specific Elovl6-deficient (BKO) mice. Lipid metabolomics analysis of neural stem cells revealed that BKO-derived neural stem cells contain significant differences in lipids, which are important for the composition of nanodomains in the plasma membrane, and that inhibitors of specific lipid molecules restored their self-renewal capacity. In addition, when the fractionation of nanodomains was assessed, the fractionation of nanodomains was altered in BKO-derived neural stem cells and was restored to normal by inhibitors of lipid species. Thus, the results suggest that Elovl6 may be responsible for signal transduction reconstitution by regulating the organization of plasma membrane nanodomains.

Academic Significance and Societal Importance of the Research Achievements

認知機能の低下は現代社会における大きな問題の1つである。本研究において神経新生の制御メカニズムを分子レベルで明らかにすることは、認知機能の低下に対する脂質の質の重要性を明らかにしたという点で意義がある。さらに、脂肪酸組成の制御による認知機能維持機構の解明は、これまで特定の神経やその受容体を標的とした精神・神経疾患の治療とは大きく異なり、より広範で副作用の少ない新規治療法の開発に貢献できる可能性が示唆される。

Report

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

    (6 results)

All 2022 2021 Other

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (1 results) Remarks (2 results)

  • [Journal Article] Morphological and functional adaptation of pancreatic islet blood vessels to insulin resistance is impaired in diabetic db/db mice2022

    • Author(s)
      Okajima Yuka、Matsuzaka Takashi、Miyazaki Shun、Motomura Kaori、Ohno Hiroshi、Sharma Rahul、Shimura Takuya、Istiqamah Nurani、Han Song-iee、Mizunoe Yuhei、Osaki Yoshinori、Iwasaki Hitoshi、Yatoh Shigeru、Suzuki Hiroaki、Sone Hirohito、Miyamoto Takafumi、Aita Yuichi、Takeuchi Yoshinori、Sekiya Motohiro、Shimano Hitoshi
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease

      Volume: 1868 Issue: 4 Pages: 166339-166339

    • DOI

      10.1016/j.bbadis.2022.166339

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Starvation‐induced transcription factor CREBH negatively governs body growth by controlling GH signaling2021

    • Author(s)
      Nakagawa Yoshimi、Kumagai Kae、Han Song‐iee、Mizunoe Yuhei、Araki Masaya、Mizuno Seiya、Ohno Hiroshi、Matsuo Kazuya、Yamada Yasunari、Kim Jun‐dal、Miyamoto Takafumi、Sekiya Motohiro、Konishi Morichika、Itoh Nobuyuki、Matsuzaka Takashi、Takahashi Satoru、Sone Hirohito、Shimano Hitoshi
    • Journal Title

      The FASEB Journal

      Volume: 35 Issue: 6 Pages: 21663-21663

    • DOI

      10.1096/fj.202002784rr

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enterohepatic Transcription Factor CREB3L3 Protects Atherosclerosis via SREBP Competitive Inhibition2021

    • Author(s)
      Nakagawa Yoshimi、Wang Yunong、Han Song-iee、Okuda Kanako、Oishi Asayo、Yagishita Yuka、Kumagai Kae、Ohno Hiroshi、Osaki Yoshinori、Mizunoe Yuhei、Araki Masaya、Murayama Yuki、Iwasaki Hitoshi、Konishi Morichika、Itoh Nobuyuki、Matsuzaka Takashi、Sone Hirohito、Yamada Nobuhiro、Shimano Hitoshi
    • Journal Title

      Cellular and Molecular Gastroenterology and Hepatology

      Volume: 11 Issue: 4 Pages: 949-971

    • DOI

      10.1016/j.jcmgh.2020.11.004

    • NAID

      120006939158

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 脂肪酸伸長酵素Elovl6による 神経幹細胞の自己複製能制御機構解明2021

    • Author(s)
      大野博、松坂賢、本村香織、志村拓哉、水之江雄平、宮本崇史、関谷元博、中川嘉、林昭夫、島野仁
    • Organizer
      第94回日本生化学大会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 筑波大学 内分泌代謝・糖尿病内科

    • URL

      https://www.u-tsukuba-endocrinology.jp/

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Remarks] 筑波大学 脂質生物学/代謝学/内分泌学

    • URL

      https://sites.google.com/view/matsuzakalab-tsukuba/home

    • Related Report
      2021 Annual Research Report 2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2023-01-30  

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