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Novel treatment strategy for peritoneal metastasis of gastric cancer targeting tumor microenvironment

Research Project

Project/Area Number 18K16362
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionOkayama University

Principal Investigator

Kikuchi Satoru  岡山大学, 大学病院, 助教 (40736584)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords胃癌 / 腹膜播種 / p53 / 腫瘍溶解ウイルス / 癌関連線維芽細胞 / がん微小環境 / 腹腔内治療 / 癌微小環境
Outline of Final Research Achievements

In the tumor microenvironment of peritoneal metastasis, cancer-associated fibroblasts (CAFs) contribute to establish the peritoneal metastasis and tumor progression. Transcriptional alteration of p53 in CAFs contributes to the tumor-supportive features. Furthermore, intraperitoneal administration of OBP-702, replicative oncolytic adenovirus-mediated p53 showed significant anti-tumor effect for peritoneal metastasis by modulating CAFs in addition to tumor lysis via exogenous p53 overexpression.

Academic Significance and Societal Importance of the Research Achievements

現在、治療困難な胃癌腹膜播種の病態を解明し、癌細胞周囲の癌関連線維芽細胞が腫瘍の生着や増大に大きく関わっていることがわかった。さらに癌関連線維芽細胞においては、癌抑制遺伝子であるp53が機能異常を起こしていることにより、癌細胞を助ける働きをしている可能性が考えられた。
p53を搭載した腫瘍溶解ウイルスであるOBP-702は、癌細胞のみならず癌関連線維芽細胞にも作用して、効果を発揮し、強力な腹膜播種抑制効果があることがわかった。このことにより、OBP-702を用いた腹腔内治療は、胃癌腹膜播種に対する新しい有用な治療法となる可能性がある。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2020 2019

All Presentation (5 results) (of which Int'l Joint Research: 2 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Presentation] Boosting replication and penetration of telomerase-specific replicative virus by paclitaxel induces synthetic lethality in peritoneal metastasis of gastric cancer2019

    • Author(s)
      Ogawa T, Kikuchi S, Ishikawa W, Tazawa H, Tabuchi M, Kuroda S, Noma K, Nishizaki M, Kagawa S, Urata Y, Fujiwara T
    • Organizer
      アメリカ癌学会 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A novel intraperitoneal theranostic virotherapy with Paclitaxel for peritoneal metastasis of gastric cancer2019

    • Author(s)
      Ogawa T, Kikuchi S, Ishikawa W, Tazawa H, Tabuchi M, Kuroda S, Noma K, Nishizaki M, Kagawa S, Urata Y, Fujiwara T
    • Organizer
      第25回日本遺伝子細胞治療学会
    • Related Report
      2019 Research-status Report
  • [Presentation] The impact of p53 arming multi-potent oncolytic adenovirus on gastric cancer cells and tumor microenvironment2019

    • Author(s)
      Ogawa T, Kikuchi S, Ishikawa W, Tazawa H, Tabuchi M, Kuroda S, Noma K, Nishizaki M, Kagawa S, Urata Y, Fujiwara T
    • Organizer
      第78回日本癌学会
    • Related Report
      2019 Research-status Report
  • [Presentation] p53搭載腫瘍溶解アデノウイルスを用いた胃癌腹膜播種に対する治療戦略と癌微小環境に与える影響2019

    • Author(s)
      小川 俊博,菊地 覚次,田渕 幹康,田澤 大,黒田 新士,野間 和広,西﨑 正彦,香川 俊輔,浦田 泰生,藤原 俊義
    • Organizer
      第32回日本バイオセラピィ学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Boosting replication and penetration of telomerase-specific replicative virus by paclitaxel induces synthetic lethality in peritoneal metastasis of gastric cancer2019

    • Author(s)
      Toshihiro Ogawa, Satoru Kikuchi, Wataru Ishikawa, Hiroshi Tazawa, Motoyasu Tabuchi, Shinji Kuroda, Kazuhiro Noma, Masahiko Nishizaki, Shunsuke Kagawa, Yasuo Urata, Toshiyoshi Fujiwara
    • Organizer
      American Association for Cancer Research Annual Meeting 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] ウイルスを含む抗癌関連非腫瘍細胞剤2020

    • Inventor(s)
      藤原俊義、小川俊博、西山岳芳、菊地覚次、田澤 大
    • Industrial Property Rights Holder
      藤原俊義、小川俊博、西山岳芳、菊地覚次、田澤 大
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-106251
    • Filing Date
      2020
    • Acquisition Date
      2020
    • Related Report
      2020 Annual Research Report
    • Overseas

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Published: 2018-04-23   Modified: 2022-01-27  

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