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A study of novel lysophospholipids and exploration of their targets

Research Project

Project/Area Number 20H03206
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Hasegawa Junya  東京医科歯科大学, 難治疾患研究所, 助教 (00533788)

Co-Investigator(Kenkyū-buntansha) 井上 飛鳥  東北大学, 薬学研究科, 教授 (50525813)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Keywordsリゾリン脂質 / イノシトールリン脂質 / GPCR / すい臓がん / リン脂質 / 質量分析 / Gタンパク質共役受容体
Outline of Research at the Start

LysoPIP3を含むLysoPIPsは発見されたばかりの新規リン脂質である。ヒト肝がんではPIP3の増加が見られない代わりにLysoPIP3が増加している。このことから、LysoPIP3はがん悪性化を促進する脂質であるという仮定を立てている。そこで本研究では、(1)LysoPIPsの生成機構、
(2)LysoPIP3のがん悪性化分子機構、(3)LysoPIP、LysoPIP2の生理的、病態生理的役割を明らかにすることで、「がん脂質」としてのLysoPIP3の役割を明確にし、脂質が関わる細胞のがん化・悪性化の分子機構の一端を解明することを目的とする。

Outline of Final Research Achievements

For three years, we have been analyzing the physiological and pathophysiological functions of the novel phospholipids "LysoPIPs" which were discovered by the applicants in this research project. We have found several phospholipases A that produce LysoPIPs. We have also devised a method for the preparation of LysoPIPs that is not commercially available, and have now succeeded in purifying LysoPIPs with high purity. Using the purified LysoPIPs, my collaborators screened about 250 G protein-coupled receptors (GPCRs) whose ligands are LysoPIP3, one of the LysoPIPs. As a result, we found that two receptors showed high reactivity.

Academic Significance and Societal Importance of the Research Achievements

本研究で見出した新規脂質LysoPIP3は、ヒト肝がんで上昇する実験事実から、がんで上昇し、がん細胞の増殖や悪性化に寄与していることが推測された。LysoPIP3の生成機構(ホスホリパーゼA)、そしてLysoPIP3が応答する受容体Aを見出していることから、これらの分子が新しいがん治療薬の標的になることが考えられる。特に本研究で見出した受容体Aは、内在性のリガンドが未知のオーファン受容体である。本研究を進めることで、LysoPIP3を真のリガンドとして提示でき、極めて学術的に意義がある。そして、膵臓がん患者で発現レベルが高い受容体Aの拮抗薬は、新規のがん治療薬として非常に期待できる。

Report

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

    (9 results)

All 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (1 results) (of which Invited: 1 results) Book (1 results)

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

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Upregulation of the ESCRT pathway and multivesicular bodies accelerates degradation of proteins associated with neurodegeneration2023

    • Author(s)
      Benyair Ron、Panapakkam Giridharan Sai Srinivas、Rivero-R?os Pilar、Hasegawa Junya、Bristow Emily、Eskelinen Eeva-Liisa、Shmueli Merav D、Fishbain-Yoskovitz Vered、Merbl Yifat、Sharkey Lisa M、Paulson Henry L.、Hanson Phyllis I、Patnaik Samarjit、Al-Ramahi Ismael、Botas Juan、Marugan Juan、Weisman Lois S.
    • Journal Title

      Autophagy Reports

      Volume: 2 Issue: 1 Pages: 2166722-2166722

    • DOI

      10.1080/27694127.2023.2166722

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [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
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Plasma membrane phosphatidylinositol (4,5)-bisphosphate is critical for determination of epithelial characteristics2022

    • Author(s)
      Kaori Kanemaru, Makoto Shimozawa, Manabu Kitamata, Rikuto Furuishi, Hinako Kayano, Yui Sukawa, Yuuki Chiba, Takatsugu Fukuyama, Junya Hasegawa, Hiroki Nakanishi, Takuma Kishimoto, Kazuya Tsujita, Kazuma Tanaka, Toshiki Itoh, Junko Sasaki, Takehiko Sasaki, Kiyoko Fukami, Yoshikazu Nakamura
    • Journal Title

      Nature Communications

      Volume: - Issue: 1 Pages: 2347-2347

    • DOI

      10.1038/s41467-022-30061-9

    • Related Report
      2022 Annual Research Report 2021 Annual Research 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

    • URL

      https://pure.teikyo.jp/en/publications/60ec8c88-daf6-48f2-8f3e-12e4cfbad383

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Role of Phosphatidylserine in the Function of Recycling Endosomes2021

    • Author(s)
      Hasegawa Junya、Uchida Yasunori、Mukai Kojiro、Lee Shoken、Matsudaira Tatsuyuki、Taguchi Tomohiko
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9 Pages: 783857-783857

    • DOI

      10.3389/fcell.2021.783857

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] A new insights into the roles of phosphoinositides in lysosomal function2021

    • Author(s)
      Junya Hasegawa, Lois S. Weisman, Junko Sasaki, Takehiko Sasaki
    • Organizer
      第44回日本分子生物学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Book] Thr Lipid2021

    • Author(s)
      長谷川 純矢
    • Total Pages
      7
    • Publisher
      メディカルレビュー社
    • Related Report
      2021 Annual Research Report

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

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