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A discovery of anti-tumor immunity-related biomarkers for Merkel cell carcinoma using next-generation sequencers.

Research Project

Project/Area Number 20K08676
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53050:Dermatology-related
Research InstitutionNagoya City University

Principal Investigator

Nakamura Motoki  名古屋市立大学, 医薬学総合研究院(医学), 准教授 (70645051)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsメルケル細胞癌 / バイオマーカー / 免疫チェックポイント阻害薬 / グルコース-6-リン酸脱水素酵素 / グルコース6リン酸デヒドロゲナーゼ
Outline of Research at the Start

我々は、当院および関連施設と、後述する10か所の協力医療機関より集められた、メルケル細胞癌のホルマリン固定パラフィン包埋(FFPE)標本、合計71症例・90サンプルを用いて、各種免疫学的染色を行い、腫瘍に浸潤する免疫担当細胞の組成を調べるとともに、PD-L1を含む免疫学的因子と予後との相関を調査する。さらにホルマリン固定パラフィン包埋(FFPE)標本からRNA、DNAを抽出し、次世代シーケンサーを用いた解析により、腫瘍及び浸潤免疫細胞の発現する因子を詳細に解析し、メルケル細胞癌における腫瘍免疫のメカニズムの解明を目指す。

Outline of Final Research Achievements

We collected 90 specimens from 71 patients (26 men, median age 77.3 years) with MCC from 9 facilities. Next-generation sequencing of mRNA from 40 FFPE MCC samples revealed that glucose-6-phosphate dehydrogenase (G6PD) correlated with PD-L1 expression and metastasis. Kaplan-Meier survival analysis revealed a poor prognosis for patients with high-G6PD expression. G6PD+ immunostaining predicted MCC patient prognosis, with a median survival of 3.4 years for G6PD+ patients and 6.7 years for G6PD- patients. G6PD activity assay was performed using 50 serum samples from 19 cases. Three cases showed high G6PD activity, and two of them were all of stage Ⅳ cases and the last one was stage Ⅱ and died of another cause soon after sampling. G6PD regulates NADPH production and high G6PD expression enhances cellular oxidative resistance. G6PD is a promising marker to stratify MCC patients into high- and low-risk groups.
These results were reported as J Immunother Cancer. 2020 Dec;8(2):e001679.

Academic Significance and Societal Importance of the Research Achievements

進行期メルケル細胞癌の治療には免疫チェックポイント阻害薬が使用されることが多いが、約半数の患者が治療抵抗性であり、適切な治療選択、効果予測のためにバイオマーカーの発見が急務であった。今回発見した抗腫瘍免疫の活性に基づくバイオマーカーである、グルコース-6-リン酸脱水素酵素により、免疫チェックポイント阻害薬の効果の予測、モニタリングが可能となり、より適切な治療選択が可能になると考える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results) Patent(Industrial Property Rights) (2 results) (of which Overseas: 2 results)

  • [Journal Article] Tertiary Lymphoid Structures and Chemokine Landscape in Virus-Positive and Virus-Negative Merkel Cell Carcinoma2022

    • Author(s)
      Nakamura Motoki、Magara Tetsuya、Kano Shinji、Matsubara Akihiro、Kato Hiroshi、Morita Akimichi
    • Journal Title

      Frontiers in Oncology

      Volume: 12

    • DOI

      10.3389/fonc.2022.811586

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Glucose-6-phosphate dehydrogenase correlates with tumor immune activity and programmed death ligand-1 expression in Merkel cell carcinoma2020

    • Author(s)
      Nakamura Motoki、Nagase Kotaro、Yoshimitsu Maki、Magara Tetsuya、Nojiri Yuka、Kato Hiroshi、Kobayashi Tadahiro、Teramoto Yukiko、Yasuda Masahito、Wada Hidefumi、Ozawa Toshiyuki、Umemori Yukie、Ogata Dai、Morita Akimichi
    • Journal Title

      Journal for ImmunoTherapy of Cancer

      Volume: 8 Issue: 2 Pages: e001679-e001679

    • DOI

      10.1136/jitc-2020-001679

    • Related Report
      2020 Research-status Report
  • [Presentation] Blockade of glucose-6-phosphate dehydrogenase induces immunogenic cell death in malignant melanoma and Merkel cell carcinoma2021

    • Author(s)
      中村元樹
    • Organizer
      The 46th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] メルケル細胞癌におけるG6PD(グルコース-6-リン酸脱水素酵素)の予後マーカーとしての可能性2021

    • Author(s)
      中村元樹
    • Organizer
      第36回日本皮膚悪性腫瘍学会
    • Related Report
      2021 Research-status Report
  • [Presentation] メルケル細胞癌におけるG6PD(グルコース-6-リン酸脱水素酵素)の予後マーカーとしての可能性2021

    • Author(s)
      中村元樹
    • Organizer
      第36回日本皮膚悪性腫瘍学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Glucose-6-Phosphate Dehydrogenase Correlates with the Tumor Immune Activity Including PD-L1 Expression in Merkel Cell Carcinoma2020

    • Author(s)
      中村元樹
    • Organizer
      The 45th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 皮膚癌の予後予測方法およびその利用2021

    • Inventor(s)
      中村元樹
    • Industrial Property Rights Holder
      中村元樹
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
    • Overseas
  • [Patent(Industrial Property Rights)] 皮膚癌の予後予測方法およびその利用2021

    • Inventor(s)
      中村元樹
    • Industrial Property Rights Holder
      中村元樹
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2020 Research-status Report
    • Overseas

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Published: 2020-04-28   Modified: 2024-01-30  

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