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Establishment of novel treatment for extramammary Paget disease

Research Project

Project/Area Number 19K08753
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53050:Dermatology-related
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Asai Jun  京都府立医科大学, 医学(系)研究科(研究院), 講師 (50438222)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords乳房街パジェット病 / がんオルガノイド / 乳房外パジェット病
Outline of Research at the Start

乳房外パジェット病は主に外陰部に発生する皮膚癌の一つである。乳房外パジェット病の多くは緩徐に進行し、表皮内癌の間に切除することができれば根治可能である。しかしながら遠隔転移を生じた進行期乳房外パジェット病では有効な治療法は確立されておらず、様々な化学療法のレジメンが試験的に試されたり、放射線療法が試されたりしているが、治療に難渋することが多い。そこで本研究は、乳房外パジェット病に関する基礎研究を可能とするし、新たな治療法開発への足がかりとするために、がんオルガノイド三次元培養をいう新技術を用いて、乳房外パジェット病組織からがんオルガノイドを採取、培養、解析する予定である。

Outline of Final Research Achievements

CTOSs were successfully prepared from 3 primary lesions and 2 metastatic lymph nodes. Of these, 2 CTOSs (EMPD-3 and EMPD-4) could be maintained and passaged long term ex vivo. Following transplantation of CTOSs to NOD/Scid mice, CTOS-derived xenotumors exhibited ductal formation, indicating that CTOSs retained the original tumor characteristics. Chemo-sensitivity assays revealed that docetaxel significantly inhibited EMPD-3 growth in a dose-dependent manner, whereas EMPD-4 was not clearly inhibited. These findings indicate the heterogeneity of EMPD and potential use of chemosensitivity assays with patient-derived CTOS to select the most effective drugs for each patient.
To our knowledge, this study represents the first establishment of an ex vivo-EMPD disease model involving conventional cell lines. EMPD CTOSs might be useful for developing new therapeutic strategies.

Academic Significance and Societal Importance of the Research Achievements

本研究において、世界で初めて乳房外パジェット病からのがんオルガノイドの分離、継代に成功した。本研究により樹立されたがんオルガノイドを用いることで、乳房外パジェット病の病態解明や新たな治療開発の足がかりとなることが期待される。

Report

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

    (6 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results)

  • [Journal Article] The Role of Podoplanin in Skin Diseases2022

    • Author(s)
      Asai Jun
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 3 Pages: 1310-1310

    • DOI

      10.3390/ijms23031310

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A successful approach for angiosarcoma of the scalp using helical tomotherapy and customized surface mold brachytherapy2021

    • Author(s)
      Suzuki Gen、Masui Koji、Watanabe Sho、Yamazaki Hideya、Takenaka Tadashi、Asai Jun、Maruyama Ayano、Yamada Kei
    • Journal Title

      Medicine

      Volume: 100 Issue: 49 Pages: e28210-e28210

    • DOI

      10.1097/md.0000000000028210

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Case of epidermodysplasia verruciformis with a novel mutation of <i>TMC8</i>2021

    • Author(s)
      Ushida Manaka、Arita Takahiro、Matsui Mari、Kanehisa Fuminao、Komori Satoshi、Katoh Norito、Konishi Eiichi、Shimizu Akira、Nakano Hajime、Asai Jun
    • Journal Title

      The Journal of Dermatology

      Volume: 48 Issue: 11

    • DOI

      10.1111/1346-8138.16139

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Case of Rapidly Expanding Conjunctival Malignant Melanoma Initially from Primary Acquired Melanosis Diagnosed 14 Years Earlier2021

    • Author(s)
      Jimura Hironobu、Mishima Yuuki、Sotozono Chie、Watanabe Akihide、Asai Jun、Ohbayashi Chiho、Ogata Nahoko
    • Journal Title

      International Medical Case Reports Journal

      Volume: Volume 14 Pages: 361-364

    • DOI

      10.2147/imcrj.s310702

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Outcome of combination therapy using BRAF and MEK inhibitors among Asian patients with advanced melanoma: An analysis of 112 cases2021

    • Author(s)
      Fujisawa Yasuhiro、Ito Takamichi、Kato Hiroshi、Irie Hiroyuki、Kaji Tatsuya、Maekawa Takeo、Asai Jun、Yamamoto Yuki、Fujimura Taku、Nakai Yasuo、Yasuda Masahito、Matsuyama Kanako、Muto Ikko、Matsushita Shigeto、Uchi Hiroshi、Nakamura Yoshiyuki、Uehara Jiro、Yoshino Koji
    • Journal Title

      European Journal of Cancer

      Volume: 145 Pages: 210-220

    • DOI

      10.1016/j.ejca.2020.12.021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel ex vivo disease model for extramammary Paget's disease using the cancer tissue-originated spheroid method2020

    • Author(s)
      Takahiro Arita, Jumpei Kondo, Yuka Kaneko, Miho Tsutsumi, Mai Kanemaru, Mari Matsui, Yukiyasu Arakawa, Norito Katoh, Masahiro Inoue, Jun Asai
    • Journal Title

      Journal of Dermatological Science

      Volume: 99(3) Issue: 3 Pages: 185-192

    • DOI

      10.1016/j.jdermsci.2020.07.006

    • Related Report
      2020 Research-status Report
    • Peer Reviewed

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Published: 2019-04-18   Modified: 2023-01-30  

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