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Identification of metastatic cancer cell surface molecules using specific antibodies and their drug discovery applications

Research Project

Project/Area Number 20K07642
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionOsaka Metropolitan University (2022)
Osaka City University (2020-2021)

Principal Investigator

TACHIBANA Taro  大阪公立大学, 大学院工学研究科, 教授 (80311752)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords転移性がん / モノクローナル抗体 / がん
Outline of Research at the Start

本研究では、すでに樹立に成功した転移性がん細胞表面を特異的に認識する抗体をツールとして利用し、
①転移能を獲得した時にのみ出現するがん細胞表面分子の同定、
②転移性がん細胞表面分子の詳細な構造解析、
③がん細胞転移におけるその細胞表面分子の機能解析、
④転移性がん細胞特異的モノクローナル抗体を利用したヒトがん担持マウスの治療試験、
⑤転移がん早期検出系の構築、を行う。

Outline of Final Research Achievements

In this study, monoclonal antibodies were generated using human bone metastatic lung cancer cells as antigens in order to identify the structures that appear on the cell surface when cancer cells acquire metastatic potential. I then established a number of monoclonal antibodies that specifically recognize the cell surface of lung cancer cells that have acquired metastatic potential.
Next, I identified candidate membrane proteins as antigens of the antibody using immunoprecipitation method. I also clarified that glycosylation is essential for antibody recognition and identified the glycan structures. As described above, these analysis of each antigens provided knowledge that contributes to the diagnosis and treatment of metastatic cancer.

Academic Significance and Societal Importance of the Research Achievements

がん治療において、転移の早期発見および治療は非常に重要である。がんの転移メカズムの解明や転移マーカーの探索は古くから行われており、一定の成果をあげてきたが、転移性がんを克服できるまでには至っていない。
そこで本研究でがん細胞が転移能を獲得した際に細胞表面に出現する構造を同定するため、ヒト骨転移性肺がん細胞を抗原とし、モノクローナル抗体を作製した。この抗体は転移性がんを特異的に認識し、がん転移の早期発見や治療に大きく貢献することが期待できる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Septin-microtubule association via a motif unique to isoform 1 of septin 9 tunes stress fibers2022

    • Author(s)
      Kuzmi Mira、Castro Linares Gerard、Leischner Fialov Jindika、Iv Franois、Salan Danile、Llewellyn Alex、Gomes Maxime、Belhabib Mayssa、Liu Yuxiang、Asano Keisuke、Rodrigues Magda、Isnardon Daniel、Tachibana Taro、Koenderink Gijsje H.、Badache Ali、Mavrakis Manos、Verdier-Pinard Pascal
    • Journal Title

      Journal of Cell Science

      Volume: 135 Issue: 1

    • DOI

      10.1242/jcs.258850

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generation of Rat Monoclonal Antibody for Mouse Nucleolin by Immunization of Ferroptosis-Induced Hepa 1-6 Cells2022

    • Author(s)
      Yokoyama Chikako、Kobayashi Sho、Harada Yumi、Nishino Yuki、Fujii Junichi、Tachibana Taro
    • Journal Title

      Monoclonal Antibodies in Immunodiagnosis and Immunotherapy

      Volume: 41 Issue: 5 Pages: 255-259

    • DOI

      10.1089/mab.2022.0005

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Canopy Homolog 2 as a Novel Molecular Target in Hepatocarcinogenesis2021

    • Author(s)
      Kakehashi Anna、Suzuki Shugo、Shiota Masayuki、Raymo Nina、Gi Min、Tachibana Taro、Stefanov Vasily、Wanibuchi Hideki
    • Journal Title

      Cancers

      Volume: 13 Issue: 14 Pages: 3613-3613

    • DOI

      10.3390/cancers13143613

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Patent(Industrial Property Rights)] 膵臓がん幹細胞に対する抗体2021

    • Inventor(s)
      立花太郎、伊原寛一郎、堀裕一、清水一也
    • Industrial Property Rights Holder
      立花太郎、伊原寛一郎、堀裕一、清水一也
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-064090
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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