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Biological roles of a new family of phospholipids

Research Project

Project/Area Number 21K19329
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 47:Pharmaceutical sciences and related fields
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Sasaki Takehiko  東京医科歯科大学, 難治疾患研究所, 教授 (50333365)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsリン脂質 / 生理活性物質 / 神経疾患 / 水溶性代謝産物
Outline of Research at the Start

リン脂質に限らず新規生体分子の発見は、将来的に一つの研究分野の展開の“扇の要”となりうる。今回探索する脂質のヘッドグループをなす水溶性代謝産物はいずれも生理的に重要な機能分子で、その代謝動態異常は様々な疾患の病態にも関わっており、それらの研究に新しい視座を与えることが期待される。よって、本研究は様々な研究分野の体系や考え方の方向を転換する潜在性を有する挑戦的研究であると考えている。

Outline of Final Research Achievements

Phospholipids are a group of molecules that perform functions that cannot be replaced by water-soluble substances, such as the composition of cell membranes, and are classified according to their hydrophilic head structure. About ten types of hydrophilic heads have been identified and studied, but it is believed that there are still a wealth of unknown lipids in living organisms. In this study, we identified a novel phospholipid. We searched for and found a synthase whose knockdown markedly reduces the level of the novel intracellular lipid. We have obtained a knockout mouse strain of this synthase and are analyzing them, and so far, we have observed a marked abnormality that results in death shortly after birth.

Academic Significance and Societal Importance of the Research Achievements

本研究の企図は、新種リン脂質の発見が幅広い生命科学分野で未解明な生命現象の理解を導く新しい切り口となり、研究のブレイクスルーをもたらす可能性にあった。本研究の成果は、新しい生体分子の発見であり、その神経系における重要な生理機能を示す知見が得られた。さらに、生成に関わる新規の酵素をさらに見出した。いくつかの新規脂質候補を見出しているが、学術的意義を明確にするにはインパクトのあるジャーナルで公表する必要がある。このために生理活性物質の化学合成が必須であり、現在進めている。新しい研究の糸口がつかめたので、医薬応用も見据えた基礎研究を今後さらに展開したい。

Report

(2 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (4 results) Remarks (1 results)

  • [Int'l Joint Research] University of Michigan(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] A mass spectrometric method for in-depth profiling of phosphoinositide regioisomers and their diseaseassociated regulation.2022

    • Author(s)
      Morioka S, Nakanishi H, Yamamoto T, Hasegawa J, Tokuda E, Hikita T, Sakihara T, Kugii Y, Oneyama C, Yamazaki M, Suzuki A, Sasaki J, Sasaki T.
    • Journal Title

      Nature Communications

      Volume: 13(1) Issue: 1 Pages: 83-83

    • DOI

      10.1038/s41467-021-27648-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PI4P/PS countertransport by ORP10 at ER–endosome membrane contact sites regulates endosome fission2022

    • Author(s)
      Kawasaki A, Sakai A, Nakanishi H, Hasegawa J, Taguchi T, Sasaki J, Arai H, Sasaki T, Igarashi M, Nakatsu F
    • Journal Title

      J Cell Biol

      Volume: 221 Issue: 1 Pages: 1-19

    • DOI

      10.1083/jcb.202103141

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PP2A-dependent TFEB activation is blocked by PIKfyve-induced mTORC1 activity2022

    • Author(s)
      Hasegawa Junya、Tokuda Emi、Yao Yao、Sasaki Takehiko、Inoki Ken、Weisman Lois S.
    • Journal Title

      Molecular Biology of the Cell

      Volume: 33 Issue: 3

    • DOI

      10.1091/mbc.e21-06-0309

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamic erectile responses of a novel penile organ model utilizing TPEM.2021

    • Author(s)
      Hashimoto D, Hirashima T, Yamamura H, Kataoka T, Fujimoto K, Hyuga T, Yoshiki A, Kimura K, Kuroki S, Tachibana M, Suzuki K, Yamamoto N, Morioka S, Sasaki T, Yamada G.
    • Journal Title

      Biol Reprod.

      Volume: in press Issue: 4 Pages: 875-886

    • DOI

      10.1093/biolre/ioab011

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Altering phosphoinositides in high‐fat diet‐associated prostate tumor xenograft growth2021

    • Author(s)
      Huang Mingguo、Koizumi Atsushi、Narita Shintaro、Nakanishi Hiroki、Sato Hiromi、Kashima Soki、Nara Taketoshi、Kanda Sohei、Numakura Kazuyuki、Saito Mitsuru、Satoh Shigeru、Nanjo Hiroshi、Sasaki Takehiko、Habuchi Tomonori
    • Journal Title

      MedComm

      Volume: 2 Issue: 4 Pages: 756-764

    • DOI

      10.1002/mco2.89

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] リゾホスファチジルイノシトール(4,5)ビスリン酸の合成と生理活性評価2022

    • Author(s)
      植原彩奈、盛田大輝、佐々木雄彦、中村浩之
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] アルツハイマー病におけるアミロイドβおよびタウ蓄積病態形成とミクログリアの関与2021

    • Author(s)
      高鳥 翔, 井口 明優, 木村 新伍, 堀 由起子, 佐々木 純子, 斉藤 貴志, 西道 隆臣, 池津 庸哉, 高井 俊行, 佐々木 雄彦, 富田 泰輔
    • Organizer
      第40回日本認知症学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 高脂肪食摂取による前立腺癌増殖とホスファチジルイノシトールの関連2021

    • Author(s)
      黄 明国, 佐々木 雄彦, 沼倉 一幸, 齋藤 満, 成田 伸太郎, 羽渕 友則
    • Organizer
      第80回日本癌学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 肝特異的ホスファチジルグリセロールリン酸ホスファターゼ遺伝子欠損によるラロン型低身長症様疾患モデルマウス2021

    • Author(s)
      高須賀 俊輔, 海老原 敬, 佐々木 雄彦
    • Organizer
      第94 回日本生化学会大会
    • Related Report
      2021 Research-status Report
  • [Remarks] 研究室ホームページ

    • URL

      https://sites.google.com/view/byoutaiseirikagaku-university/home?authuser=1

    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

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