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Devolopment for highly sensitive and quantitative methods with a facile, fast and low-cost protocol.

Research Project

Project/Area Number 16K07153
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Tumor diagnostics
Research InstitutionJapanese Foundation for Cancer Research

Principal Investigator

NOMURA Sachio  公益財団法人がん研究会, 経営本部 調達・社会連携部, 総合職 (70714773)

Co-Investigator(Kenkyū-buntansha) 新井 正美  公益財団法人がん研究会, 有明病院 遺伝子診療部, 部長 (20232027)
石塚 直樹  公益財団法人がん研究会, 有明病院 臨床試験部, 副部長 (50392395)
樋野 興夫  順天堂大学, 医学部, 客員教授 (90127910)
小林 敏之  順天堂大学, 医学(系)研究科(研究院), 准教授 (40260070)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsDNAメチル化 / 定量的超高感度解析 / 大腸がん / リキッドバイオプシー / がん / 高解像度融解曲線解析 / 超高感度定量解析 / MLH1 / BRCA1 / SEPT9 / DNA メチル化 / Hypermethylation / Hypomethylation / Liquid biopsy / Mozaicism / メチル化DNA / リアルタイムPCR / 融解曲線解析 / 高感度定量 / 超高感度定量 / HyperMethylation / HypoMethylation / 腫瘍DNAパネル
Outline of Final Research Achievements

This research accomplished ultra-high sensitive quantitative DNA analysis technology development using popular genetic equipment and commercial reagents. Target DNA regions were MLH1 and BRCA1 promoter regions which are famous for carcinogenesis, and SEPT9 promoter region that is used in the liquid biopsy kit for colorectal cancer. The developed technique is facile, rapid, low-cost, quantitative and ultra-high sensitive. The sensitivity was achieved 0.001% level with over 0.9 of coefficient of determination. The sensitivity was achieved for both methylated DNA in unmethylated DNA or unmethylated DNA in methylated DNA. We applied this technology to colorectal liquid biopsy to calculate the copy number of cancer cell derived circulating tumor DNA (ctDNA) in ml of plasma. This suggests this technique could be used for quantification of aberrant DNA methylations overtime like tumor markers.

Academic Significance and Societal Importance of the Research Achievements

DNAメチル化異常について、簡便迅速安価で定量的超高感度解析する技術を開発できたことで、がんの初期段階での検出と経時的追跡・解析を安価に実施できる可能性が高まった。これは従来の方法では正常細胞由来DNAに妨害されて偽陰性の可能性が高かったもので、かつ特殊な解析機器を用いなくてはできなかったものである。本研究の成果は、これまで困難であった正常細胞由来DNAが大量に存在している検体に対して、経時的にがん由来のDNA異常を解析可能とし、がんの早期発見と診断について普及的検査に道を開くものとなる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2020 2017

All Presentation (2 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Presentation] A novel method for highly sensitive, facile and inexpensive quantitative assessment of aberrant DNA methylation in liquid biopsies2020

    • Author(s)
      Sachio Nomura, Toshiyuki Kobayashi, Kiichi Sugimoto, Masami Arai, Kazuhiro Sakamoto, Thomas R. Pisanic II, Okio Hino.
    • Organizer
      AACR Annual Meeting 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Highly Sensitive DNA Methylation Analysis of MLH1 and BRCA12017

    • Author(s)
      野村幸男、 樋野興夫、新井正美
    • Organizer
      第76回日本癌学会学術総会
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] 高感度かつ定量的な遺伝子検査方法、プライマーセット、及び検査キット2020

    • Inventor(s)
      野村幸男、新井正美
    • Industrial Property Rights Holder
      野村幸男、新井正美
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-539642
    • Filing Date
      2020
    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 特許権2017

    • Inventor(s)
      野村幸男、新井正美
    • Industrial Property Rights Holder
      公益財団法人がん研究会
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2017-168078
    • Filing Date
      2017
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2021-12-27  

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