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Novel Exosome Biology with sPLA2

Research Project

Project/Area Number 20K21550
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 50:Oncology and related fields
Research InstitutionTokai University

Principal Investigator

Kotani Ai  東海大学, 医学部, 教授 (00517477)

Co-Investigator(Kenkyū-buntansha) 村上 誠  東京大学, 大学院医学系研究科(医学部), 教授 (60276607)
Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords細胞外小胞 / リンパ腫 / s PLA2 / エクソソーム / sPLA2
Outline of Research at the Start

エクソソームが標的細胞に取り込まれないと機能しないという古典的概念を覆す現象「標的細胞に取り込まれることなく、体液中に存在する酵素、分泌型リン脂質加水分解酵素(sPLA2)と反応し、強力な生理活性物質をエクソソーム上で産生することによって生物学的効果を発揮しうる」の細胞での効果とその分子機序、癌における生物学的意義を解明し、新しいエクソソームバイオロジーを構築する。

Outline of Final Research Achievements

In this study, we demonstrated that sPLA2 secreted by tumor-associated macrophages (TAMs) in malignant lymphoma tissue 2 secreted by tumor-associated macrophages (TAMs) in malignant lymphoma tissue degrades phospholipids in tumor cell-derived EVs. Furthermore, we found that this degradation dramatically improves the functions of EVs, such as "ease of cellular uptake" and "immunosuppressive effect," and induces various biological phenomena. In this case, they discovered that lysophospholipid, a degradation product of EV phospholipids, is involved in signaling to cells through a novel operating mechanism that has never been observed in EV biology before. The research group has also discovered a novel mechanism of EV signaling in human lymphomas. Using a mouse model of human lymphoma development, the research group demonstrated that sPLA2-mediated EV degradation is essential for tumorigenesis.

Academic Significance and Societal Importance of the Research Achievements

本研究ではリンパ腫由来EVのみならず他のがん細胞由来EVもsPLA2により分解されることを証明し、sPLA2-EV軸は腫瘍形成において共通の現象であることを明らかにしました。今後はこのsPLA2-EV軸が新たな「免疫チェックポイント」として、がん治療のための新しい薬物標的となることが期待されます。また本研究で証明されたsPLA2によるEV機能の増強効果から、過去に幸谷グループで報告した「組織保護・抗炎症作用を持つEV」などのさまざまな種類のEVが持つ固有の能力をsPLA2が増強するのではないかという仮説の検証も現在行っており、今後は治療的応用への発展も期待されます

Report

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

    (15 results)

All 2021 2020

All Journal Article (13 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 13 results,  Open Access: 10 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Human hepatocyte-derived extracellular vesicles attenuate the carbon tetrachloride-induced acute liver injury in mice2021

    • Author(s)
      Kakizaki Masatoshi、Yamamoto Yuichiro、Nakayama Shunya、Kameda Kazuaki、Nagashima Etsuko、Ito Masatoshi、Suyama Takashi、Matsuzaki Yumi、Chiba Tetsuhiro、Sumiyoshi Hideaki、Inagaki Yutaka、Kotani Ai
    • Journal Title

      Cell Death and Disease

      Volume: 12 Issue: 11 Pages: 1010-1010

    • DOI

      10.1038/s41419-021-04204-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Significance of trogocytosis and exosome-mediated transport in establishing and maintaining the tumor microenvironment in lymphoid malignancies2021

    • Author(s)
      Masaharu Kawashima, Hiroshi Higuchi, Ai Kotani
    • Journal Title

      Journal of Clinical and Experimental Hematopathology

      Volume: 61 Issue: 4 Pages: 192-201

    • DOI

      10.3960/jslrt.21005

    • NAID

      130008131967

    • ISSN
      1346-4280, 1880-9952
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Proteomic and phospholipidomic characterization of extracellular vesicles inducing tumor microenvironment in Epstein-Barr virus-associated lymphomas.2021

    • Author(s)
      Ito M, Kudo K, Higuchi H, Otsuka H, Tanaka M, Fukunishi N, Araki T, Takamatsu M, Ino Y, Kimura Y, Kotani A.
    • Journal Title

      FASEB J.

      Volume: 35 Issue: 4

    • DOI

      10.1096/fj.202002730r

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-coding RNAs and lipids mediate the function of extracellular vesicles in cancer cross-talk.2021

    • Author(s)
      Kotani A, Ito M, Kudo K.
    • Journal Title

      Semin Cancer Biol.

      Volume: 74 Pages: 121-133

    • DOI

      10.1016/j.semcancer.2021.04.017

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rap1 is essential for B-cell locomotion, germinal center formation and normal B-1a cell population.2021

    • Author(s)
      Ishihara S, Sato T, Sugioka R, Miwa R, Saito H, Sato R, Fukuyama H, Nakajima A, Sawai S, Kotani A, Katagiri K.
    • Journal Title

      Front Immunol.

      Volume: 12 Pages: 624419-624419

    • DOI

      10.3389/fimmu.2021.624419

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of ERV3-1 in leukocytes of acute myelogenous leukemia patients2021

    • Author(s)
      Nakagawa S, Kawashima M, Miyatake Y, Kudo K, Kotaki R, Ando K, Kotani A.
    • Journal Title

      Gene

      Volume: 773 Pages: 145363-145363

    • DOI

      10.1016/j.gene.2020.145363

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Extracellular vesicles secreted by HBV-infected cells modulate HBV persistence in hydrodynamic HBV transfection mouse model2020

    • Author(s)
      Kakizaki Masatoshi、Yamamoto Yuichiro、Otsuka Motoyuki、Kitamura Kouichi、Ito Masatoshi、Kawai Hideki Derek、Muramatsu Masamichi、Kagawa Tatehiro、Kotani Ai
    • Journal Title

      Journal of Biological Chemistry

      Volume: 295 Issue: 35 Pages: 12449-12460

    • DOI

      10.1074/jbc.ra120.014317

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Overexpression of miR-669m inhibits erythroblast differentiation2020

    • Author(s)
      Kotaki R., et.al. Kawashima M, Yamaguchi A, Suzuki N, Koyama-Nasu R, Ogiya D, Okuyama K, Yamamoto Y, Takamatsu M, Kurosaki N, Ando K, Murata A, Ohtsuka M, Nakagawa S, Katagiri K, Kotani A.
    • Journal Title

      Sci Rep.

      Volume: 10 Issue: 1 Pages: 13554-13554

    • DOI

      10.1038/s41598-020-70442-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PD-L1/L2 protein levels rapidly increase on monocytes via trogocytosis from tumor cells in classical Hodgkin lymphoma2020

    • Author(s)
      Kawashima M, Carreras J, Higuchi H, Kotaki R, Hoshina T, Okuyama K, Suzuki N, Kakizaki M, Miyatake Y, Ando K, Nakayama M, Umezu S, Horie R, Higuchi Y, Katagiri K, Goyama S, Kitamura T, Chamoto K, Yano S,Nakamura N, and A Kotani
    • Journal Title

      Leukemia

      Volume: - Issue: 9 Pages: 2405-2417

    • DOI

      10.1038/s41375-020-0737-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Interferon-γ induced PD-L1 expression and soluble PD-L1 production in gastric cancer.2020

    • Author(s)
      Imai Y, Chiba T, Kondo T, Kanzaki H, Kanayama K, Ao J, Kojima R, Kusakabe Y, Nakamura M, Saito T, Nakagawa R, Suzuki E, Nakamoto S, Muroyama R, Tawada A, Matsumura T, Nakagawa T, Kato J, Kotani A, Matsubara H, Kato N.
    • Journal Title

      Oncol Lett

      Volume: 20 Issue: 3 Pages: 2161-2168

    • DOI

      10.3892/ol.2020.11757

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Heat-Killed Fusobacterium nucleatum Triggers Varying Heme-Related Inflammatory and Stress Responses Depending on Primary Human Respiratory Epithelial Cell Type.2020

    • Author(s)
      Ryo Koike, Marni E Cueno, Keiko Nodomi, Muneaki Tamura, Noriaki Kamio, Hajime Tanaka, Ai Kotani, Kenichi Imai.
    • Journal Title

      Molecules

      Volume: 25(17) Issue: 17 Pages: 3839-3839

    • DOI

      10.3390/molecules25173839

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PD-L1 is induced on hepatocyte surface via CKLF-like MARVEL transmembrane domain-containing protein 6 upregulation by the anti-HBV drug Entecavir2020

    • Author(s)
      Yamamoto Yuichiro、Kakizaki Masatoshi、Shimizu Takayuki、Carreras Joaquim、Chiba Tetsuhiro、Chamoto Kenji、Kagawa Tatehiro、Aoki Taku、Nakamura Naoya、Ando Kiyoshi、Kotani Ai
    • Journal Title

      International Immunology

      Volume: - Issue: 8 Pages: 519-531

    • DOI

      10.1093/intimm/dxaa018

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dasatinib exacerbates splenomegaly of mice inoculated with Epstein-Barr virus-infected lymphoblastoid cell lines.2020

    • Author(s)
      2)Kotaki R, Kawashima M, Yamamoto Y, Higuchi H, Nagashima E, Kurosaki N, Takamatsu M, Kikuti YY, Imadome KI, Nakamura N, *Kotani A.
    • Journal Title

      Sci Rep.

      Volume: 10(1): Issue: 1 Pages: 4355-4355

    • DOI

      10.1038/s41598-020-61300-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Patent(Industrial Property Rights)] 多価不飽和脂肪酸及び/又はリゾリン脂質を表面に有する細胞外小胞2021

    • Inventor(s)
      幸谷 愛、村上誠、 工藤海、中山駿矢
    • Industrial Property Rights Holder
      東海大学 東京 大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 劇症型NK白血病に対する治療標的の同定2021

    • Inventor(s)
      幸谷愛、宮竹佑治
    • Industrial Property Rights Holder
      東海大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2020-08-03   Modified: 2023-01-30  

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