• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Visualization of Cholangiocarcinoma Targeting Claudin 18.2 by Near-Infrared Fluorescently Labeled Antibody

Research Project

Project/Area Number 21K08715
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionSapporo Medical University

Principal Investigator

Kyuno Daisuke  札幌医科大学, 医学部, 助教 (70563485)

Co-Investigator(Kenkyū-buntansha) 高澤 啓  札幌医科大学, 医学部, 准教授 (00593021)
木村 康利  札幌医科大学, 医学部, 准教授 (80311893)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords胆道癌 / claudin-18.2 / 術中ナビゲーション技術 / Claudin 18 / 近赤外蛍光 / 胆管癌 / claudin / NIR / タイト結合
Outline of Research at the Start

本研究では、胆管癌の進展範囲を可視化するために、胆管癌表面に過剰発現するclaudin18.2を標的とした近赤外蛍光色素標識抗体を作成して、癌組織を蛍光発色させる新規技術の開発を目指す。研究には胆管癌切除標本、癌細胞株を利用し、抗体の有効性を解析する。本研究結果は、胆管癌を手術中に可視化するナビゲーション技術へ発展させることを最終的な目標としており、癌遺残の無い手術を補助することで、患者予後の向上に直結すると考えている。

Outline of Final Research Achievements

The purpose of this study was to develop a novel technique for labeling claudin-18.2 in cholangiocarcinoma cells to visualize the extent of cholangiocarcinoma progression.
In resected tissue, claudin-18 expression was found on cell membranes in cholangiocarcinoma and BilIN, whereas expression was absent in the normal bile duct epithelium. Claudin-18 was highly expressed in well-differentiated carcinomas, and there was no difference in claudin-18 expression between carcinomas and BilINs. In vitro experiments have shown that claudin-18.2 is expressed on the surface of certain cholangiocarcinoma cell lines and is overexpressed in migrating cells. Several original and commercially available antibodies were used in the experiments, and we identified antibodies that bind to the membrane of cancer cells.

Academic Significance and Societal Importance of the Research Achievements

Claudin-18.2は胆道の癌細胞や異型上皮において高発現し、正常上皮細胞との鑑別に有用であることが示された。この研究成果は、蛍光染色技術などと組み合わせることにより、胆道癌の診断および手術中のナビゲーション技術の進歩に貢献すると期待される。また、claudin-18.2が腫瘍先進部に発現していた事実などをもとに、発現機構の解析と発現パターンの解明を進めることで、発癌機構の解明や胆道癌の切除支援による治療成績の向上に繋がる可能性がある。さらに、癌細胞特有の発現プロファイルを利用した新たな治療法の開発にも寄与することが予想される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (7 results)

  • [Journal Article] A case report of carcinoma of the papilla of Vater associated with a hyperplasia?dysplasia?carcinoma sequence by pancreaticobiliary maljunction2024

    • Author(s)
      Korai Takahiro、Kimura Yasutoshi、Watanabe Kazunori、Low Siew-Kee、Imamura Masafumi、Nagayama Minoru、Kukita Kazuharu、Murakami Takeshi、Kato Toru、Kondo Yuta、Kyuno Daisuke、Sugawara Taro、Murota Ayako、Kawakami Yujiro、Masaki Yoshiharu、Nakase Hiroshi、Takemasa Ichiro
    • Journal Title

      World Journal of Surgical Oncology

      Volume: 22 Issue: 1 Pages: 63-63

    • DOI

      10.1186/s12957-024-03347-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Claudin-18.2 as a therapeutic target in cancers: cumulative findings from basic research and clinical trials2021

    • Author(s)
      Kyuno Daisuke、Takasawa Akira、Takasawa Kumi、Ono Yusuke、Aoyama Tomoyuki、Magara Kazufumi、Nakamori Yuna、Takemasa Ichiro、Osanai Makoto
    • Journal Title

      Tissue Barriers

      Volume: 10 Issue: 1 Pages: 1967080-1967080

    • DOI

      10.1080/21688370.2021.1967080

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of tight junctions in the epithelial-to-mesenchymal transition of cancer cells2021

    • Author(s)
      Kyuno Daisuke、Takasawa Akira、Kikuchi Shin、Takemasa Ichiro、Osanai Makoto、Kojima Takashi
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Biomembranes

      Volume: 1863 Issue: 3 Pages: 183503-183503

    • DOI

      10.1016/j.bbamem.2020.183503

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The role of Claudin-1 in Pancreatic Cancer2024

    • Author(s)
      浅野日南英
    • Organizer
      日本病理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 膵・胆管合流異常関連胆道癌症例の検討2023

    • Author(s)
      古来 貴寛
    • Organizer
      日本膵・胆管合流異常研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 乳がんにおけるタイト結合分子JAM-Aの役割2023

    • Author(s)
      真柄 和史
    • Organizer
      日本病理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 子宮頸部腺癌で異所性高発現するclaudin-6はがん悪性化に寄与する2023

    • Author(s)
      高澤 啓
    • Organizer
      日本病理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 乳がんにおけるタイト結合関連タンパク質LSRの膜型エストロゲン受容体GPR30を介した発現調節とその意義2023

    • Author(s)
      太田 未咲
    • Organizer
      日本病理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 膵癌におけるタイト結合分子Claudin-1の機能2023

    • Author(s)
      及能大輔
    • Organizer
      第127回北海道癌談話会例会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 胆道癌におけるタイト結合分子claudin18の発現状態を利用した病理学的診断および根治切除後の予後予測への有用性2021

    • Author(s)
      及能大輔、木村康利、高澤啓、計良淑子、太田盛道、永山稔、今村将史、西舘敏彦、沖田憲司、信岡隆幸、小山内誠、竹政伊知朗
    • Organizer
      第121回日本外科学会定期学術集会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi