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Bispesific-antibody targeting B7-H4

Research Project

Project/Area Number 17K07235
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Tumor therapeutics
Research InstitutionShizuoka Cancer Center Research Institute

Principal Investigator

Iizuka Akira  静岡県立静岡がんセンター(研究所), その他部局等, 研究員 (00463183)

Co-Investigator(Kenkyū-buntansha) 秋山 靖人  静岡県立静岡がんセンター(研究所), その他部局等, 研究員 (70222552)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords腫瘍免疫 / B7-H4 / 二重特異性抗体 / マウスモデル / 乳癌 / ヒト化マウスモデル / PD-L1 / T細胞 / CD3 / NOGマウス
Outline of Final Research Achievements

Comprehensive gene mutation and gene expression analysis performed at Shizuoka Cancer Center revealed high expression of immunoregulatory molecule B7-H4 in lung cancer, breast cancer and ovarian cancers. In this study, we designed and constructed anti-B7-H4 and anti-CD3 bispecific antibodies in order to make cytotoxic T cells recognize B7-H4 expressing cancer cells and immunosuppressive tumor-infiltrating macrophages. This bispecific antibody was able to killing B7-H4 positive cancer cells by T cells in vitro at a concentration of less than 1 ng/mL, and we succeeded in regressing B7-H4 positive cancers by the bispecific antibody administrations in a model of mice transplanted with human immune cells and human breast cancer cells.

Academic Significance and Societal Importance of the Research Achievements

近年登場した免疫チェックポイント阻害剤の使用により変異負荷量(変異蓄積量)の多い癌で高い奏効率が得られることが明らかとなり、人体に備わる免疫システムを利用した癌治療が新たな方法論として社会的認知を受けることとなったが、変異負荷量の少ない癌種に対しては、別のアプローチが必要とされている。すでに一部の固形癌や白血病などに対して抗体医薬品の使用が行われているが、その適応を広げるため、或はその効果を強めるための研究開発が広く行われており、本研究は固形癌の治療に新たな標的、新たな手法を提供するものとなる。

Report

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

    (4 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] A T-cell-engaging B7-H4/CD3-bispecific Fab-scFv Antibody Targets Human Breast Cancer2019

    • Author(s)
      Iizuka Akira、Nonomura Chizu、Ashizawa Tadashi、Kondou Ryota、Ohshima Keiichi、Sugino Takashi、Mitsuya Koichi、Hayashi Nakamasa、Nakasu Yoko、Maruyama Kouji、Yamaguchi Ken、Akiyama Yasuto
    • Journal Title

      Clinical Cancer Research

      Volume: 25 Issue: 9 Pages: 2925-2934

    • DOI

      10.1158/1078-0432.ccr-17-3123

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Anti-B7-H4 bispecific antibody targets human breast cancers2019

    • Author(s)
      飯塚 明
    • Organizer
      第78回日本癌学会学術総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] T-cell-engaging B7-H4/CD3 bispecific Fab-scFv antibody targeting human breast cancer2018

    • Author(s)
      Akira Iizuka, Tadashi Ashizawa, Keiichi Ohshima, Masatoshi Kusuhara, Ken Yamaguchi, Yasuto Akiyama
    • Organizer
      第77回日本癌学会学術総会
    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] 国際特許、優先権2017

    • Inventor(s)
      AKIYAMA Yasuto; IIZUKA Akira
    • Industrial Property Rights Holder
      Shizuoka prefecture
    • Industrial Property Rights Type
      特許
    • Filing Date
      2017
    • Related Report
      2017 Research-status Report

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

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