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Development of Innovative Immune Combination Therapy Based on Tumor and Stromal Morphology of Colorectal Cancer

Research Project

Project/Area Number 22K16480
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionGunma University

Principal Investigator

Shiraishi Takuya  群馬大学, 医学部附属病院, 助教 (90881277)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords上皮間葉転換 / 癌関連線維芽細胞 / 腫瘍免疫関連因子 / desmoplastic reaction / 低分化胞巣 / 大腸癌 / 腫瘍形態 / 間質形態 / 免疫療法
Outline of Research at the Start

免疫療法の発展により薬物療法は進歩してきているが、大腸癌に対する免疫療法の適応は限られている。癌組織での上皮間葉転換(EMT)は腫瘍局所への免疫細胞浸潤を抑制し免疫療法抵抗性を誘導することから近年注目されている。
本研究では大腸癌の形態学的特徴や免疫療法の感受性と相関するEMTや腫瘍免疫関連因子を明らかにすることで、大腸癌に対する免疫療法の感受性に関連する分子マーカーを同定する。

Outline of Final Research Achievements

We classified advanced colorectal cancer morphologically on histopathological specimens based on desmoplastic reaction (DR), which reflects the cancer function of related fibroblasts, and poorly differentiated clusters (PDCs), which are signs of dedifferentiation in advanced cancer areas. Moreover, we evaluated epithelial-to-mesenchymal transition (EMT) based on this classification, and colorectal cancer with EMT had a poor prognosis. In addition, we evaluated the fibrotic components within the tumor, and found that cases with many fibrotic components had a poor prognosis, and such cases were associated with a significant decrease in CD3+ and CD8+ cells. Furthermore, the local immune status of the tumor was evaluated, and the prognosis of cases in which tumor immunosuppression was observed was poor. We revealed that immature DR, associated with EMT, and severe intratumoral fibrosis were associated with decreased immune cell infiltration and worsened prognosis.

Academic Significance and Societal Importance of the Research Achievements

本研究成果からEMT誘導の引き起こされている腫瘍先進部のDRが未熟な症例や腫瘍内の線維化が強い症例は腫瘍免疫抑制と関連し、予後の悪化を引き起こしていることが明らかとなった。大腸癌の形態学的特徴や腫瘍免疫に関連する各種指標から予後不良症例を抽出し集学的治療を行うことで進行大腸癌の予後を向上させうる可能性や、EMT誘導を引き起こしている症例に対して免疫療法の感受性を高めることで予後を改善させうる新たな治療開発につながる基礎データを得ることができた点で学術的・社会的意義があると考える。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 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] Prognostic value of a modified-immune scoring system in patients with pathological T4 colorectal cancer2024

    • Author(s)
      Dorjkhorloo Gendensuren、Erkhem?Ochir Bilguun、Shiraishi Takuya、Sohda Makoto、Okami Haruka、Yamaguchi Arisa、Shioi Ikuma、Komine Chika、Nakazawa Nobuhiro、Ozawa Naoya、Shibasaki Yuta、Okada Takuhisa、Osone Katsuya、Sano Akihiko、Sakai Makoto、Ogawa Hiroomi、Yokobori Takehiko、Shirabe Ken、Saeki Hiroshi
    • Journal Title

      Oncology Letters

      Volume: 27 Issue: 3 Pages: 104-104

    • DOI

      10.3892/ol.2024.14237

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association of tumor size in pathological T4 colorectal cancer with desmoplastic reaction and prognosis2022

    • Author(s)
      Shiraishi Takuya、Ogawa Hiroomi、Katayama Ayaka、Osone Katsuya、Okada Takuhisa、Enokida Yasuaki、Oyama Tetsunari、Sohda Makoto、Shirabe Ken、Saeki Hiroshi
    • Journal Title

      Annals of Gastroenterological Surgery

      Volume: 6 Issue: 5 Pages: 667-678

    • DOI

      10.1002/ags3.12571

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 臨床と基礎研究から明らかにするT4大腸癌切除症例の治療戦略2024

    • Author(s)
      白石 卓也、小川 博臣、片山 彩香、Gendensuren Dorjkhorloo、Bilguun Erkhem-Ochir 、遠藤 瑞貴、山口 亜梨紗、塩井 生馬、柴崎 雄太、小峯 知佳、中澤 信博、岡田 拓久、大曽根 勝也、佐野 彰彦、酒井 真、宗田 真、小山 徹也、横堀 武彦、調 憲、佐伯 浩司
    • Organizer
      第124回日本外科学会定期学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] T4大腸癌切除症例の腫瘍径と予後および腫瘍間質の検討2024

    • Author(s)
      白石 卓也、小川 博臣 、Gendensuren Dorjkhorloo、Bilguun Erkhem-Ochir、岡田 拓久、大曽根 勝也、宗田 真、横堀 武彦、調 憲、佐伯 浩司
    • Organizer
      2024年がん関連三学会Rising Starネットワーキング
    • Related Report
      2023 Annual Research Report
  • [Presentation] High intratumoral fibrosis was associated with tumor aggressiveness and poor prognosis in pT4 colorectal cancer2023

    • Author(s)
      Gendensuren Dorjkhorloo, Takuya Shiraishi, et al.
    • Organizer
      第34回消化器癌発生学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] High nuclear karyopherin-α2 is associated with tumor aggressiveness and poor prognosis in CRC patients with pT4 stage2023

    • Author(s)
      Bilguun Erkhem-Ochir, Gendensuren Dorjkhorloo, Takuya Shiraishi, et al.
    • Organizer
      第34回消化器癌発生学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 病理学的壁深達度T4(pT4)大腸癌根治切除症例における腫瘍径と予後および腫瘍間質の検討2022

    • Author(s)
      白石卓也、小川 博臣、片山 彩香、岡田 拓久、大曽根 勝也、榎田 泰明、宗田 真、小山 徹也、調 憲、佐伯 浩司
    • Organizer
      JDDW2022 (Japan Digestive Disease Week 2022)
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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