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Development of glioma liquid biopsy using cfDNA

Research Project

Project/Area Number 22K16690
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionKyushu University (2022, 2024)
The University of Tokyo (2023)

Principal Investigator

Fujioka Yutaka  九州大学, 医学研究院, 助教 (10914252)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2024: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordscell free DNA / glioblastoma / glioma / liquid biopsy / digital PCR / MLPA / BRAFV600E / diitalPCR / plasma / CSF / cell free tumor DNA / liquid iopsy
Outline of Research at the Start

神経膠腫の時間的空間的不均一性の克服にはliquid biopsyが大きく寄与すると予想される。 神経膠腫において 髄液中cell free tumor DNAが検出できることはわかってきた。しかし現段階では採取 できるDNA量が極微量であることで網羅的な解析が可能な症例は限られ、髄液採取よりもよ り侵襲性の低い血液では感度が十分ではない。本研究はより高感度なassay開発による神経膠 腫由来の血漿ctDNAの検出、髄液ctDNA増幅による網羅的解析方法の開発を遂行し、神経膠腫liquid biopsyの臨床での実用性を向上させる。

Outline of Final Research Achievements

In this study, we reported for the first time in the world the copy number alteration of glioblastoma by the MLPA method using cfDNA, and presented its usefulness as a new diagnostic method that is noninvasive and allows multiple-task analysis. We also introduced a new digital PCR system (QuantStudio Absolute Q) to improve the sensitivity of the method compared to the conventional method, because it is difficult to improve the sensitivity by amplifying cfDNA in spinal fluid, and confirmed the BRAF assay and established the assay for MYD88, and demonstrated the usefulness of the digitalPCR method for various targets. We demonstrated the possibility of brain tumor liquid biopsy using digitalPCR for various targets.

Academic Significance and Societal Importance of the Research Achievements

本研究は、脳腫瘍由来cfDNAの検出法の改善、開発を目的とした。新型digital PCRによる実臨床glioma検体における検出感度の改善の可能性を示し、新たなアッセイの開発及び検証を含め、脳腫瘍liquid biopsyの臨床応用へ向けた一歩となった。また、髄液cfDNAを使用したMLPA法を用いたcopy number alterationの評価を世界で初めて報告し、安価かつ多項目解析可能な新しいliquid biopsy手法を提案した。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results)

  • [Journal Article] Liquid Biopsy for Glioma Using Cell-Free DNA in Cerebrospinal Fluid2024

    • Author(s)
      Otsuji Ryosuke、Fujioka Yutaka、Hata Nobuhiro、Kuga Daisuke、Hatae Ryusuke、Sangatsuda Yuhei、Nakamizo Akira、Mizoguchi Masahiro、Yoshimoto Koji
    • Journal Title

      Cancers

      Volume: 16 Issue: 5 Pages: 1009-1009

    • DOI

      10.3390/cancers16051009

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Liquid biopsy with multiplex ligation-dependent probe amplification targeting cell-free tumor DNA in cerebrospinal fluid from patients with adult diffuse glioma2022

    • Author(s)
      Ryosuke Otsuji
    • Journal Title

      Neuro oncology advance

      Volume: 5 Issue: 1 Pages: 1-11

    • DOI

      10.1093/noajnl/vdac178

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] BRAF V600E変異を伴うgliomaに対する 髄液cell free DNAを用いたliquid biopsy2024

    • Author(s)
      藤岡 寛
    • Organizer
      第42回脳腫瘍学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] BRAF V600E変異を伴うgliomaに対する髄液cell free DNAを用いた liquid biopsy2024

    • Author(s)
      藤岡 寛
    • Organizer
      第83回日本脳神経外科学会総会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 当院で加療した組織学的にlower grade gliomaであるIDH野生型diffuse gliomaの検討2024

    • Author(s)
      藤岡 寛
    • Organizer
      第42回脳腫瘍病理学会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Diffuse glioma における髄液cell-free DNA を用いたMLPA法によるコピー数解析2023

    • Author(s)
      尾辻 亮介, 藤岡 寛, 秦 暢宏, 野口 直樹, 三月田 祐平, 空閑 太亮, 中溝 玲, 山元英崇, 溝口 昌弘, 吉本 幸司.
    • Organizer
      第41回日本脳腫瘍病理学会(東京)
    • Related Report
      2023 Research-status Report
  • [Presentation] Diffuse gliomaに対する髄液中cell free DNAを用いたliquid biopsyの現状と課題2022

    • Author(s)
      藤岡 寛
    • Organizer
      第81回脳神経外科学会総会
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2026-01-16  

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