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Raman spectroscopic study of cancer metastasis and diagnosis.

Research Project

Project/Area Number 18K12063
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionEhime University

Principal Investigator

Koga Shigehiro  愛媛大学, 医学部附属病院, 講師 (30625950)

Co-Investigator(Kenkyū-buntansha) 大嶋 佑介  大分大学, 医学部, 客員研究員 (10586639)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsラマン分光法 / がん / イメージング / がん微小環境 / ラマン分光 / 転移 / がん治療 / ラマン 分光
Outline of Final Research Achievements

Raman spectroscopy provides a wealth of diagnostic information to the surgeon with in situ cancer detection and label-free histopathology in intraoperative conditions. Raman spectroscopy is a promising optical technique which can analyze biological tissues with light scattering. We confirmed that Raman spectra obtained from cancer cells and their environment including other cells and extracellular matrix in xenograft models and spontaneous metastasis models were distinguishable using Raman spectroscopy combined with nonlinear optical imaging. Malignancy can be characterized not only by the cancer cells but also by the environmental factors including immune cells, stroma cells, secretion vesicles and extracellular matrix, but to identify and detect cancer diagnostic biomarkers in vivo on Raman spectroscopy is still challenging. Here we investigate morphological and molecular dynamics in advanced cancer specimens obtained from patients toward the clinical application of the technique.

Academic Significance and Societal Importance of the Research Achievements

ラマン分光法は、蛍光プローブなどの標識を一切必要としない無染色・低侵襲でがん細胞とその微小環境の状態を計測するための技術として着目されており、新規バイオマーカー探索に有用であると期待されてきた。しかしながら、従来の市販されているラマン分光システムでは、技術面・コスト面からその適応範囲は極めて限定的であった。本研究では、がん微小環境の解析にラマン分光分析を応用し、従来のin vivo蛍光イメージング技術の弱点を補う形で動物モデルや手術検体において、がん微小環境を可視化することに成功したことで、抗がん剤による治療効果の評価や、新規バイオマーカーに着目した新たな治療戦略へつながることが期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2021 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results)

  • [Journal Article] Raman spectroscopic analysis for gastric and colorectal cancer in surgical treatment toward molecular-guided surgery2018

    • Author(s)
      Shigehiro Koga, Yuji Watanabe, Yusuke Oshima
    • Journal Title

      Proc. SPIE

      Volume: -

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Efficacy of transmediastinal esophagectomy for esophageal cancer patients with pulmonary disfunction2021

    • Author(s)
      Shigehiro Koga
    • Organizer
      第33回日本内視鏡外科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 低肺機能を伴う胸部食道癌に対し縦隔鏡下食道切除術を施行した7例2020

    • Author(s)
      古賀繁宏
    • Organizer
      第74回日本食道学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ラマン分光法による術中光診断技術の開発2019

    • Author(s)
      大嶋佑介
    • Organizer
      第10回 癌・炎症と抗酸化研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Characterization of human specimens with colorectal cancer by Raman Spectroscopy2019

    • Author(s)
      Shigehiro Koga
    • Organizer
      第74回日本消化器外科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] ラマン分光法・非線形光学による術中がんイメージング技術の開発2018

    • Author(s)
      大嶋佑介、古賀繁宏、渡部祐司
    • Organizer
      第57回日本生体医工学会大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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