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Development of novel immunotherapy for colon cancer targeting CEACAM1

Research Project

Project/Area Number 17K10560
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General surgery
Research InstitutionWakayama Medical University

Principal Investigator

Yokoyama Shozo  和歌山県立医科大学, 医学部, 非常勤講師 (90398462)

Co-Investigator(Kenkyū-buntansha) 山上 裕機  和歌山県立医科大学, 医学部, 教授 (20191190)
松田 健司  和歌山県立医科大学, 医学部, 講師 (30398458)
堀田 司  和歌山県立医科大学, 医学部, 博士研究員 (50244744)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsCEACAM1 / exosome / colorectal cancer / serum / 大腸癌 / PD-L1 / Galectin-9 / 癌 / 細胞・組織 / 免疫学
Outline of Final Research Achievements

Implication of exosomal carcinoembryonic antigen-related adhesion molecule 1 (CEACAM1) in patients with colorectal cancer remains to be investigated. We optimized a method for assessment of serum exosomal CEACAM1. Whole blood samples were collected from patients during surgery. Exosomes were isolated using the ExoQuick reagent, solubilized in an assay buffer and subjected to CEACAM1 detection by ELISA. A five-fold increase in the concentration of the exosomes in the assay buffer and the addition of bovine serum albumin (BSA) for measurements of the serum exosomal CEACAM1. The thawing temperature of frozen serum samples before exosome extraction was 25ºC. The ratio between serum CEACAM1 and serum exosomal CEACAM1 increased in Stage IV colorectal cancer. Serum exosomal CEACAM1 may have some biological activity in colorectal cancer patients with distant metastasis.

Academic Significance and Societal Importance of the Research Achievements

細胞は他の細胞との接着によりシグナルを交換しあうことが知られている。血清エクソソーム内に存在する細胞膜たんぱく質により、エクソソームと細胞の接着により、細胞と細胞との接着のような何らかのシグナルを伝達する可能性がある。その生物活性がある分子の1つとしてエクソソーム内のCEACAM1の測定法を確立し、臨床検体で測定したことに学術的意義ある。社会的意義としては、大腸癌患者の血清中の生物活性のある膜たんぱく質を有するエクソソームが明らかになることで癌患者に効果のある診断法、治療法の開発への礎となる。

Report

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

    (8 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Loss of CEACAM1 is associated with poor prognosis and peritoneal dissemination of patients with gastric cancer.2019

    • Author(s)
      Takeuchi A, Yokoyama S, Nakamori M, Nakamura M, Ojima T, Yamaguchi S, Mitani Y, Shively JE, Yamaue H.
    • Journal Title

      Sci Rep.

      Volume: 9 Issue: 1 Pages: 12702-12702

    • DOI

      10.1038/s41598-019-49230-w

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Clinical implications of carcinoembryonic antigen distribution in serum exosomal fraction-Measurement by ELISA.2017

    • Author(s)
      Yokoyama S, Takeuchi A, Yamaguchi S, Mitani Y, Watanabe T, Matsuda K, Hotta T, Shively JE, Yamaue H.
    • Journal Title

      PLoS One

      Volume: 12 Issue: 8 Pages: e0183337-e0183337

    • DOI

      10.1371/journal.pone.0183337

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CEACAM1 is associated with recurrence after hepatectomy for colorectal liver metastasis.2017

    • Author(s)
      Yamaguchi S, Yokoyama S, Ueno M, Hayami S, Mitani Y, Takeuchi A, Shively JE, Yamaue H.
    • Journal Title

      Journal of Surgical Research

      Volume: 220 Pages: 353-362

    • DOI

      10.1016/j.jss.2017.07.035

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 胃癌におけるCEACAM1発現の臨床的意義2019

    • Author(s)
      横山省三、竹内昭博 、中森幹人 、中村公紀 、尾島敏康 、山上裕機
    • Organizer
      第24回日本外科病理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Diagnosis of distant metastasis in colorectal cancer by carcinoembryonic antigen distribution in serum exosomal fraction2018

    • Author(s)
      横山省三
    • Organizer
      日本がん転移学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Clinical implications of CEA in serum exosomal fraction of patients with colorectal cancer2018

    • Author(s)
      横山省三
    • Organizer
      日本癌学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 血清exosomal CEAによる大腸癌遠隔転移診断―血清CEAとの比較―. Diagnosis of colorectal cancer with distant metastasis by using serum exosomal CEA2018

    • Author(s)
      横山省三、松田健司、竹内昭博、渡邉高士、田村耕一、岩本博光、水本有紀、中村有貴、村上大輔、岡田健一、尾島敏康、上野昌樹、中森幹人、山上裕機
    • Organizer
      日本外科学会
    • Related Report
      2017 Research-status Report
  • [Presentation] CEACAM1 expression and its cytoplasmic isoform balance in gastrointestinal cancer.2017

    • Author(s)
      Shozo Yokoyama, Akihiro Takeuchi, Junji Ieda, Koichi Tamura, Shigehisa Kiriyama, Naoyuki Yamamoto, Yasuyuki Mitani, John E. Shively and Hiroki Yamaue
    • Organizer
      The 27th Annual International CEA Symposium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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

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