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Development of innovative diagnostic and therapeutic methods for esophageal squamous cell carcinoma focusing on genomic abnormalities

Research Project

Project/Area Number 20K17012
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionChiba University

Principal Investigator

Akizue Naoki  千葉大学, 医学部附属病院, 医員 (40836110)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords食道扁平上皮癌 / 内視鏡治療後瘢痕 / 遺伝子変異 / 食道SCC / ESD後瘢痕部 / 背景粘膜 / 体細胞変異 / ゲノム異常 / 再生粘膜 / EsophaCap
Outline of Research at the Start

食道癌の遺伝子変異については多くの報告があり、さらに食道背景粘膜にも遺伝子変異が存在することも報告された。
本研究では、食道腫瘍治療後再生粘膜の遺伝子学的解析を行い、食道再生粘膜の遺伝子学的プロファイルを明らかにし、食道癌高リスク患者の治療やその後のサーベイランスに結び付けることを目指す。また、EsophaCapと呼ばれる、糸付きのカプセル化されたスポンジを使用し、内視鏡検査を行わずに低侵襲下で食道の細胞を採取し、病理学的、遺伝子学的解析により、癌の存在診断や発癌ポテンシャルを測ることを目指す。

Outline of Final Research Achievements

The study cohort included 19 patients with ESCC. We used an EC panel to identify target sequences for squamous cell carcinoma (SCC), background mucosa (BM), and RM, respectively, after ER of ESCC.
Results: We identified 77 mutations of 32 genes in SCC, 133 mutations of 34 genes in BM, and 100 mutations of 29 genes in RM. Putative driver mutations were identified in 20 mutations in 14 cases in SCC, 16 mutations in 10 cases in BM, and 7 mutations in 11 cases in RM. The rate of putative driver mutations to total mutations was significantly lower in RM (26% in SCC vs. 12% in BM vs. 7% in RM, p = 0.009). Additionally, the rate of cases with TP53 putative driver mutations was significantly lower in RM (63% in SCC vs. 37% in BM vs. 16% in RM, p = 0.011). The percentage of putative driver mutations and percentage of cases with a putative driver of TP53 were significantly lower in RM.
Conclusion: Esophageal RM after ER of ESCC could have a lower risk of carcinogenesis.

Academic Significance and Societal Importance of the Research Achievements

食道扁平上皮癌は非常に致死率の高い癌である。飲酒や喫煙がリスクファクターとなり、リスクが高い患者では同時に多発したり、異時性に再発することがしばしばある。早期の食道扁平上皮癌に対しては内視鏡的切除が近年多く施行されているが、予防法は確立されていない。一度慢性炎症を起こしてしまった食道は発癌リスクが高いため、何年にもわたり内視鏡検査での経過観察が必要なる。そこで内視鏡切除の瘢痕部の遺伝子変異を調べることで、一度欠損し、再生してきた粘膜面では発癌リスクがやや減少することが本研究では示唆された。

Report

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

    (5 results)

All 2022 2021 2020

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

  • [Journal Article] Comprehensive mutational analysis of background mucosa in patients with Lugol‐voiding lesions2021

    • Author(s)
      Akizue Naoki、Okimoto Kenichiro、Arai Makoto、Hirotsu Yosuke、Amemiya Kenji、Oura Hirotaka、Kaneko Tatsuya et al
    • Journal Title

      Cancer Medicine

      Volume: 10 Issue: 11 Pages: 3545-3555

    • DOI

      10.1002/cam4.3905

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Transition in genetic mutation of esophageal squamous epithelium; from normal mucosa to carcinoma and post-endoscopic resection scar2022

    • Author(s)
      明杖直樹
    • Organizer
      DDW
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 食道扁平上皮の発癌から治療後瘢痕までの遺伝子変異の変遷の検討2021

    • Author(s)
      明杖直樹
    • Organizer
      2021年、消化器病学会総会、シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 食道扁平上皮癌内視鏡切除後の瘢痕部に注目した遺伝子変異の検討2020

    • Author(s)
      明杖直樹
    • Organizer
      2020年、JDDW、統合プログラム(W)
    • Related Report
      2020 Research-status Report
  • [Presentation] Genetic variation from esophageal squamous cell carcinogenesis to post-treatment regenerated mucosa2020

    • Author(s)
      Naoki Akizue
    • Organizer
      2020 UEGW virtual poster
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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

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