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Development of a new therapy for refractory ovarian cancer via liposomal nanoparticle targeting control of EMT

Research Project

Project/Area Number 17K11304
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Obstetrics and gynecology
Research InstitutionOsaka Medical College

Principal Investigator

Ohmichi Masahide  大阪医科大学, 医学部, 教授 (10283764)

Co-Investigator(Kenkyū-buntansha) 林 正美  大阪医科大学, 医学部, 准教授 (00551748)
田中 良道  大阪医科大学, 医学部, 講師 (10625502)
恒遠 啓示  大阪医科大学, 医学部, 講師 (70388255)
田辺 晃子  大阪医科大学, 医学部, 非常勤講師 (70454543)
佐々木 浩  大阪医科大学, 医学部, 講師 (80432491)
兪 史夏  大阪医科大学, 医学部, 非常勤医師 (80625674)
寺井 義人  大阪医科大学, 医学部, 非常勤講師 (90278531)
田中 智人  大阪医科大学, 医学部, 講師 (90411363)
藤原 聡枝  大阪医科大学, 医学部, 講師 (90707960)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords卵巣癌 / EMT / 癌幹細胞 / 高分子ミセル / ドラッグデリバリーシステム / 上皮・間葉形態転換 / ニッチ / 上皮間葉形態転換 / Endothelinー2
Outline of Final Research Achievements

We produced liposomal cisplatin to treat ovarian cancer cells. In order to target CD24-positive cells, an anti-CD24 monoclonal antibody was modified to the above drug, because we have found that CD24 is involved in ovarian cancer metastasis through up-regulation of epithelial-mesenchymal transition (EMT). Treatment of our liposomal cisplatin with anti-CD24 andibody inhibited EMT. Furthermore, significantly prolonged survival was observed under treatment of the above liposomal cisplatin compared with that of cisplatin or liposomal cisplatin without anti-CD24 antibody. These results suggest the potential of targeting anticancer therapeutics for CD24-positive ovarian cancer cells to prevent disease progression.

Academic Significance and Societal Importance of the Research Achievements

卵巣癌は、当初抗癌剤に感受性を示しても次第に耐性を示すことが多く、そのため予後不良の婦人科癌である。抗癌剤耐性獲得のメカニズムを明らかにしそれを克服することを目的として、本研究を行った。本研究により、卵巣癌がシスプラチン耐性を獲得するメカニズムの一つが明らかとなり、今回開発した高CD24抗体を外郭にもつ高分子ミセルが有効である可能性がマウスモデルで示唆されたことは、臨床応用にむけての第一歩となりうると考えている。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2020 2017

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

  • [Journal Article] Pharmacokinetic evaluation and antitumor potency of liposomal nanoparticle encapsulated cisplatin targeted to CD24-positive cells in ovarian cancer2020

    • Author(s)
      Ashihara K, Terai Y, Tanaka T, Tanaka Y, Fujiwara S, Maeda K, Tunetoh S, Sasaki H, Hayashi M, Ohmichi M.
    • Journal Title

      Oncol Lett.

      Volume: 19 Pages: 1872-1880

    • DOI

      10.3892/ol.2020.11279

    • NAID

      120006873100

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] CD24 expression is a marker for predicting clinical outcome and regulates the epithelial-mesenchymal transition in ovarian cancer via both the Akt and ERK pathways.2017

    • Author(s)
      Nakamura K, Terai Y, Tanabe A, Ono YJ, Hayashi M, Maeda K, Fujiwara S, Ashihara K, Nakamura M, Tanaka Y, Tanaka T, Tsunetoh S, Sasaki H, Ohmichi M.
    • Journal Title

      Oncol Rep

      Volume: - Issue: 6 Pages: 3189-3200

    • DOI

      10.3892/or.2017.5583

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 難治性卵巣癌モデルマウスに対するCD24を標的とした高分子ミセルを用いた新規治療2017

    • Author(s)
      芦原 敬允, 寺井 義人, 土橋 裕允, 藤原 聡枝, 田中 良道, 田中 智人, 恒遠 啓示, 佐々木 浩, 林 正美, 大道 正英
    • Organizer
      第69回日本産科婦人科学会学術集会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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