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Research on the artificial neo-antigen-presenting extracellular vesicles which can activate dendritic cells against tumors

Research Project

Project/Area Number 17K01390
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biomedical engineering/Biomaterial science and engineering
Research InstitutionOsaka Prefecture University

Principal Investigator

ITO TOMOKO  大阪府立大学, 生命環境科学研究科, 客員研究員 (80372910)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords細胞外小胞 / ネオ抗原 / ガン免疫治療 / 樹状細胞 / 結核菌抗原 / エクソソーム製剤 / ネオ・エピトープ / ネオ・アンティジェン / 生物・生体工学
Outline of Final Research Achievements

Tumor specific mutant neoantigens are essential for successful cancer immunotherapy. However, in most cases, tumors have only non-mutated self-antigens, which possess no or low immunogenicity. To overcome this disadvantage, we have developed a novel "artificial neoantigen strategy".
We prepared extracellular vesicles (EVs) from the cultured cells which had been transfected with plasmid encoding the strong bacterial antigen ESAT-6. The EVs presented ESAT-6 antigen or its epitopes on their surfaces as an "artificial neoantigen".
Those EVs presenting ESAT-6 antigen effectively stimulated the cultured DCs. Injection of the EVs into tumor-bearing mice showed significant antitumour activity. Administration of the DCs stimulated by the EVs also exhibited high antitumor effect in mice. Such "artificial neoantigen"-presenting EVs are expected as novel cancer vaccines.

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた微生物抗原提示細胞外小胞は、人工的なネオ抗原として働き抗腫瘍免疫を強制的に効率よく惹起するもので、癌免疫治療の本質的な適応限界を克服する全く新しい戦略を提供する。
本細胞外小胞製剤は患者本人の細胞から調製することができるため、拒絶応答等の副作用や、ウイルス感染等の危険因子を全く含まない安全性の高い製剤である。さらに細胞治療での免疫細胞活性化剤としての利用法は、より安全性の高いヒトへの臨床応用の可能なシステムと期待される。
本研究で得られた知見は「腫瘍細胞の免疫原性の低さ」を克服する癌免疫治療の新しいプラットホーム技術として広く展開でき、癌治療の向上に大きく貢献する。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (22 results)

All 2021 2020 2019 2018 2017

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (20 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Microbial antigen-presenting extracellular vesicles derived from genetically modified tumor cells promote antitumor activity of dendritic cells2021

    • Author(s)
      Tomoko Ito, Kikuya Sugiura, Aya Hasegawa, Wakana Ouchi, Takayuki Yoshimoto, Izuru Mizoguchi, Toshio Inaba, Katsuyuki Hamada, Masazumi Eriguchi, Yoshiyuki Koyama
    • Journal Title

      Pharmaceutics

      Volume: 13 Issue: 1 Pages: 57-69

    • DOI

      10.3390/pharmaceutics13010057

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Innate immunity mediated by dendritic cells/macrophages plays a central role in the early period in tumor treatment using gene of Mycobacterium tuberculosis antigen2018

    • Author(s)
      Takahiro Ushigusa, Yoshiyuki Koyama, Tomoko Ito, Kenichi Watanabe, James K. Chambers, Aya Hasegawa, Kazuyuki Uchida, Ryoji Kanegi, Shingo Hatoya, Toshio Inaba, Kikuya Sugiura
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 80 Issue: 2 Pages: 190-196

    • DOI

      10.1292/jvms.17-0466

    • NAID

      130006339616

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 腫瘍溶解性ウイルスを模した癌免疫治療の新戦略2021

    • Author(s)
      小山義之、伊藤智子、溝口出、善本隆之、浦喜久弥、長谷川綾、大内若菜、稲葉俊夫
    • Organizer
      第85回日本インターフェロン・サイトカイン学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 腫瘍溶解性ウイルスを模倣した 細胞外小胞による免疫誘導システム2021

    • Author(s)
      小山義之、伊藤智子、善本隆之、溝口出
    • Organizer
      第8回日本細胞外小胞学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] アデノウイルスの免疫活性化機能を模倣した癌免疫治療の新戦略2021

    • Author(s)
      小山義之、伊藤智子、善本隆之、溝口出
    • Organizer
      第20回遺伝子・デリバリー研究会シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 微生物抗原を提示した細胞外小胞の 腫瘍免疫治療、感染予防・治療ワクチン への応用2020

    • Author(s)
      小山義之、伊藤智子、江里口正純、善本隆之、溝口出、杉浦喜久弥、 長谷川綾、大内若菜、稲葉俊夫
    • Organizer
      第7回日本細胞外小胞学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Preparation of "artificial neoepitope"-presenting exosomes and their ability to stimulate antitumor immunity2019

    • Author(s)
      Tomoko Ito, Kikuya Sugiura, Aya Hasegawa, Wakana Ouchi, Toshio Inaba, Masazumi Eriguchi, Yoshiyuki Koyama
    • Organizer
      遺伝子・デリバリー研究会第19回シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] "Artificial neoantigen"-transfection induced significant inhibition of tumor growth by eliciting innate immunity in the early period in tumor treatment2019

    • Author(s)
      Yoshiyuki Koyama, Kikuya Sugiura, Aya Hasegawa, Wakana Ouchi, Toshio Inaba, Masazumi Eriguchi, Tomoko Ito
    • Organizer
      遺伝子・デリバリー研究会第19回シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] Mechanism of antitumor immunity activation by "artificial neoantigen"-presenting exosomes2019

    • Author(s)
      Yoshiyuki Koyama, Tomoko Ito, Masazumi Eriguchi, Aya Hasegawa, Wakana Ouchi, Toshio Inaba, Kikuya Sugiura
    • Organizer
      ISEV2019 (The International Society for Extracellular Vesicles)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] エクソソームを用いた抗原提示細胞への結核菌抗原エピトープ/MHC Class I分子複合体の送達とその抗腫瘍免疫誘導効果2019

    • Author(s)
      伊藤智子、杉浦喜久弥、大内若菜、長谷川綾、稲葉俊夫、江里口正純、小山義之
    • Organizer
      第35回日本DDS学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 「人工ネオエピトープ」提示エクソソームの調製と抗腫瘍ワクチンへの応用2019

    • Author(s)
      小山義之、伊藤智子、杉浦喜久弥、大内若菜、長谷川綾、稲葉俊夫、江里口正純
    • Organizer
      第35回日本DDS学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Development of "Artificial neoepitope"-presenting exosomes for novel cancer immunotherapy2019

    • Author(s)
      Tomoko Ito, Masazumi Eriguchi, Aya Hasegawa, Wakana Ouchi, Toshio Inaba, Kikuya Sugiura, Yoshiyuki Koyama
    • Organizer
      European Society of Gene and Cell Therapy 27th annual congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Antitumour immune activation by "artificial neoantigen"-presenting exosomes derived from the genetically modified cells2019

    • Author(s)
      Yoshiyuki Koyama, Tomoko Ito, Masazumi Eriguchi, Aya Hasegawa, Wakana Ouchi, Toshio Inaba, Kikuya Sugiura
    • Organizer
      European Society of Gene and Cell Therapy 27th annual congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 結核菌抗原を「人工ネオアンティジェン」として提示したエクソソームによる腫瘍治療効果の検討2019

    • Author(s)
      杉浦喜久弥、小山義之、伊藤智子、長谷川綾、大内若菜、江里口正純、稲葉俊夫
    • Organizer
      日本獣医再生医療学会第14回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 結核菌抗原を「人工ネオアンティジェン」として提示したエクソソームによる抗腫瘍免疫活性化のメカニズム2019

    • Author(s)
      小山義之、伊藤智子、長谷川綾、大内若菜、稲葉俊夫、江里口正純、杉浦喜久弥
    • Organizer
      第16回 日本免疫治療学会 学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 「人工ネオエピトープ」提示エクソソームによる抗腫瘍免疫活性化のメカニズム2018

    • Author(s)
      小山義之、伊藤智子、江里口正純、長谷川綾、大内若菜、稲葉俊夫、杉浦喜久弥
    • Organizer
      第5回日本細胞外小胞学会
    • Related Report
      2018 Research-status Report
  • [Presentation] ESAT-6 DNA導入による腫瘍治療効果の免疫組織化学的解析2018

    • Author(s)
      大内若菜、牛草貴博、小山義之、伊藤智子、渡邉謙一、James K. CHAMBERS、内田和幸、金城綾二、鳩谷晋吾、稲葉俊夫、杉浦喜久弥
    • Organizer
      第161回日本獣医学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 「人工Neoantigen」遺伝子を導入した細胞由来のエクソソームを用いた抗腫瘍免疫治療2018

    • Author(s)
      小山義之、伊藤智子、長谷川綾、杉浦喜久弥、稲葉俊夫、江里口正純
    • Organizer
      第15回日本免疫治療学研究会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Artificial neoepitope-presenting exosomes derived from the cells genetically modified to express Mycobacterium tuberculosis antigen as cellular immunity adjuvants2017

    • Author(s)
      Tomoko Ito, Kikuya Sugiura, Aya Hasegawa, Toshio Inaba, Masazumi Eriguchi, Yoshiyuki Koyama
    • Organizer
      the 25th Anniversary Congress of the European Society for Gene and Cell Therapy
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Dendritic cell activation induced by Artificial neoepitope-presenting exosomes derived from the genetically modified cells the 25th Anniversary Congress of the European Society for Gene and Cell Therapy2017

    • Author(s)
      Yoshiyuki Koyama, Tomoko Ito, Masazumi Eriguchi, Aya Hasegawa, Toshio Inaba, Kikuya Sugiura
    • Organizer
      the 25th Anniversary Congress of the European Society for Gene and Cell Therapy
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 「人工ネオエピトープ」提示エクソソームによる樹状細胞の活性化と抗腫瘍効果の向上2017

    • Author(s)
      小山義之、伊藤智子、江里口正純、長谷川綾、稲葉俊夫、杉浦喜久弥
    • Organizer
      第4回日本細胞外小胞学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 人工Neoantigenによる樹状細胞治療の効果改善2017

    • Author(s)
      小山義之、伊藤智子、長谷川綾、杉浦喜久弥、稲葉俊夫、江里口正純
    • Organizer
      遺伝子・デリバリー研究会第17回シンポジウム
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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