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Identification of synthetic pathway for lysophosphatidylserine in activated lymphocytes.

Research Project

Project/Area Number 19H03366
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionThe University of Tokyo (2020-2022)
Tohoku University (2019)

Principal Investigator

Aoki Junken  東京大学, 大学院薬学系研究科(薬学部), 教授 (20250219)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2020: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywordsリゾリン脂質 / 免疫 / がん免疫 / GPCR / リゾホスファチジルセリン / PS-PLA1 / 炎症反応 / 受容体 / 免疫機能 / 感染症 / 免疫増強 / B細胞 / G12/13 / 活性化リンパ球 / 産生酵素
Outline of Research at the Start

申請者はリゾリン脂質の一種であるリゾホスファチジルセリン(以下LysoPS)に特異的に応答するGPCRを複数同定した。LysoPS受容体は、特に、活性化T, Bリンパ球に特異的に発現し、KOマウスでは免疫が活性化される状況で、顕著なT細胞、B細胞数の増加を認めたことから、LysoPSシグナルは免疫抑制作用を発揮することが判明した。リンパ球が活性化する状況ではLysoPSが産生されていると想定される。そこで、本研究では、未だ不明な点が多いLysoPSの産生系に着目し、生化学的手法とリンパ球レベルでの遺伝子抑制系を組み合わせ、活性化リンパ球におけるLysoPS産生の全容を解明する。

Outline of Final Research Achievements

This year, the function of LPS1 in anti-tumour immunity was analysed in a murine basal carcinoma model. Mouse colon cancer-derived cells MC38 were subcutaneously injected into the flanks of mice and tumour growth was monitored over time. A significant increase in tumour volume was observed from 10 to 16 days after carcinoma carriage in LPS1-deficient mice compared to wild-type mice. Tumour growth was significantly suppressed in the LPS1 agonist group compared to the solvent group. The number of CD45+ immune cells was also significantly increased in the tumour tissue of the M1-treated group. These results indicate that intrinsic LPS1 signalling exhibits anti-tumour activity. Further mechanistic analysis of the anti-tumour effect of LPS1 signalling will be carried out in the future.

Academic Significance and Societal Importance of the Research Achievements

がん免疫を高める、免疫チェックポイント療法が期待されている。本研究の成果は、従来の免疫チェックポイント療法の標的とは全く異なるGPCRを標的とした抗がん剤開発が可能であることを強く示唆する。今後、化合物、抗体等を用い、LPS1/GPR34を標的とした抗がん剤開発が加速されることが期待される。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (18 results)

All 2023 2022 2020 2019

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 6 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Emerging roles of lysophosphatidylserine as an immune modulator2023

    • Author(s)
      Yaginuma Shun、Omi Jumpei、Uwamizu Akiharu、Aoki Junken
    • Journal Title

      Immunological Reviews

      Volume: - Issue: 1 Pages: 20-29

    • DOI

      10.1111/imr.13204

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Many Roles of Lysophospholipid Mediators and Japanese Contributions to This Field2022

    • Author(s)
      Takagi Yugo、Nishikado Shun、Omi Jumpei、Aoki Junken
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 45 Issue: 8 Pages: 1008-1021

    • DOI

      10.1248/bpb.b22-00304

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2022-08-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Changes in Lysophospholipid Components in Ulcerative Colitis and Colitis-associated Cancer2022

    • Author(s)
      SONODA HIROFUMI、KITAMURA CHIEKO、KANO KUNIYUKI、ANZAI HIROYUKI、NAGAI YUZO、ABE SHINYA、YOKOYAMA YUICHIRO、ISHII HIROAKI、KISHIKAWA JUNKO、MURONO KOJI、EMOTO SHIGENOBU、SASAKI KAZUHITO、KAWAI KAZUSHIGE、NOZAWA HIROAKI、AOKI JUNKEN、ISHIHARA SOICHIRO
    • Journal Title

      Anticancer Research

      Volume: 42 Issue: 5 Pages: 2461-2468

    • DOI

      10.21873/anticanres.15724

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Current Knowledge on Mammalian Phospholipase A1, Brief History, Structures, Biochemical and Pathophysiological Roles2022

    • Author(s)
      Yaginuma Shun、Kawana Hiroki、Aoki Junken
    • Journal Title

      Molecules

      Volume: 27 Issue: 8 Pages: 2487-2487

    • DOI

      10.3390/molecules27082487

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modulations of bioactive lipids and their receptors in postmortem Alzheimer’s disease brains2022

    • Author(s)
      Kurano Makoto、Saito Yuko、Uranbileg Baasanjav、Saigusa Daisuke、Kano Kuniyuki、Aoki Junken、Yatomi Yutaka
    • Journal Title

      Frontiers in Aging Neuroscience

      Volume: 14 Pages: 1066578-1066594

    • DOI

      10.3389/fnagi.2022.1066578

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Membrane Phospholipid Analogues as Molecular Rulers to Probe the Position of the Hydrophobic Contact Point of Lysophospholipid Ligands on the Surface of G-Protein-Coupled Receptor during Membrane Approach2020

    • Author(s)
      Sayama Misa、Uwamizu Akiharu、Otani Yuko、Inoue Asuka、Aoki Junken、Sekijima Masakazu、Ohwada Tomohiko
    • Journal Title

      Biochemistry

      Volume: 59 Issue: 11 Pages: 1173-1201

    • DOI

      10.1021/acs.biochem.0c00061

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Elevated phosphatidylserine-specific phospholipase A1 level in hyperthyroidism.2020

    • Author(s)
      Nakawatari K, Kurano M, Araki O, Nishikawa M, Shimamoto S, Igarashi K, Aoki J, Murakami M, Yatomi Y.
    • Journal Title

      Clin Chim Acta.

      Volume: 503 Pages: 99-106

    • DOI

      10.1016/j.cca.2020.01.011

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-naturally Occurring Regio Isomer of Lysophosphatidylserine Exhibits Potent Agonistic Activity toward G Protein-Coupled Receptors2020

    • Author(s)
      Nakamura Sho、Sayama Misa、Uwamizu Akiharu、Jung Sejin、Ikubo Masaya、Otani Yuko、Kano Kuniyuki、Omi Jumpei、Inoue Asuka、Aoki Junken、Ohwada Tomohiko
    • Journal Title

      Journal of Medicinal Chemistry

      Volume: 63 Issue: 17 Pages: 9990-10029

    • DOI

      10.1021/acs.jmedchem.0c01126

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regulation of plasma glycero-lysophospholipid levels by lipoprotein metabolism2019

    • Author(s)
      Kurano M, Kano K, Hara M, Tsukamoto K, Aoki J, Yatomi Y.
    • Journal Title

      Biochem J

      Volume: 476 Issue: 23 Pages: 3565

    • DOI

      10.1042/bcj20190498

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Serum phosphatidylserine-specific phospholipase A1 as a novel biomarker for monitoring systemic lupus erythematosus disease activity.2019

    • Author(s)
      Sawada T, Kurano M, Shirai H, Iwasaki Y, Tahara K, Hayashi H, Igarashi K, Fujio K, Aoki J, Yatomi Y.
    • Journal Title

      Int J Rheum Dis

      Volume: 22 Issue: 11 Pages: 2059-2066

    • DOI

      10.1111/1756-185x.13689

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] PS-PLA1-LysoPS軸の感染症免疫における機能解析2022

    • Author(s)
      柳沼 舜, 近江 純平, 可野 邦行, 青木 淳賢
    • Organizer
      日本生化学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] LysoPS受容体サブタイプ選択的アゴニストを使用したLPS2のB細胞上機能の解析2022

    • Author(s)
      上水 明治, 大和田 智彦, 青木 淳賢
    • Organizer
      日本生化学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] in vitro B細胞培養系を用いたLysoPSによるB細胞活性化の抑制機構の解析2020

    • Author(s)
      上水 明治、北村 大介、青木 淳賢
    • Organizer
      第93回 日本生化学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] リンパ節においてリゾホスファチジルセリンはLPS1を介して適応免疫を活性化する2020

    • Author(s)
      西角駿、深見郁也、近江純平、青木淳賢
    • Organizer
      第93回 日本生化学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 230.リゾホスファチジルセリンによるB細胞の活性化抑制機構と活性化B細胞におけるその分泌様式の解析2020

    • Author(s)
      上水 明治、新上 雄司、井上 飛鳥、北村 大介、青木 淳賢
    • Organizer
      日本薬学会第141年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] リゾホスファチジルセリンはオートクライン/パラクライン的に作用し活性化B細胞の凝集塊形成を抑制する2019

    • Author(s)
      上水明治, 新上雄司, 井上飛鳥, 可野邦行, 青木淳賢
    • Organizer
      第92回日本生化学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 腫瘍免疫におけるリゾホスファチジルセリンの機能解析2019

    • Author(s)
      佐藤美希, 近江純平, 深見郁也, 新上雄司, 可野邦行, 青木淳賢
    • Organizer
      第92回日本生化学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Autocrine lysophosphatidylserine signaling in outer follicles negatively regulates B cell expansion2019

    • Author(s)
      Junken Aoki
    • Organizer
      FASEB Summer Research Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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