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To identify the key molecules of stem cell : Possible involvement of neural crest-derived cells against the pathogenesis of middle ear cholesteatoma

Research Project

Project/Area Number 19K09857
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Yamamoto-fukuda Tomomi  東京慈恵会医科大学, 医学部, 講師 (40372776)

Co-Investigator(Kenkyū-buntansha) 穐山 直太郎  東邦大学, 医学部, 講師 (90554238)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords中耳真珠腫 / シングルセル解析 / 腫瘍幹細胞化Key分子 / 腫瘍幹細胞
Outline of Research at the Start

中耳真珠腫は、骨破壊・脳膿瘍などの合併症を起こす難治性の慢性増殖性疾患で、増殖能が更新した重層扁平上皮と厚い皮下組織を特徴とする。外科的切除術が唯一の根治療法であり、手術後の合併症・後遺症が問題となっているため、保存的治療法の確立が望まれるが未だ腫瘍幹細胞の詳細な解析が出来ていない。本研究では、中耳真珠腫腫瘍幹細胞系譜同定、腫瘍幹細胞化Key分子(マーカー分子)同定、幹細胞の腫瘍化から正常分化への誘導を試み新規保存治療開発を目的とする。本研究では正常幹細胞から腫瘍化ニッチ境界を明らかにすることから、治療のみでなく予防医学も視野に置いた大規模臨床研究につながると大きく期待できると考えている。

Outline of Final Research Achievements

In this study, we focused on neural crest cells that differentiate into middle ear mucosa cells during middle ear development in order to identify the middle ear cholesteatoma stem cell lineage and stem cell-forming Key molecules.
Using transgenic mice (Wnt1EGFP) in which neural crest-linage cells can be visualized, we generated KGF-inducible experimental middle ear cholesteatoma and examined them histologically. We identified neural crest-linage cells as a component of mouse cholesteatoma and detected the p75 gene as a marker of middle ear cholesteatoma-derived neural crest-linage cells. A large number of p75-positive cells were also found in human cholesteatoma tissues. The mouse cholesteatomas were suppressed by killing p75-positive cells in vivo.

Academic Significance and Societal Importance of the Research Achievements

中耳真珠腫構成細胞として神経堤由来細胞の存在とその細胞のマーカーが同定できた。これまで唯一であった手術療法といった真珠腫性中耳炎の治療法が根本的に変化する可能性があり、その結果、①発症率および再発率の減少、②手術による合併症の減少、が期待でき、
③入院費・手術費・外来通院費の削減などの、医療経済効果も見込める。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results)

  • [Journal Article] Super-enhancer Acquisition Drives FOXC2 Expression in Middle Ear Cholesteatoma2021

    • Author(s)
      Yamamoto-Fukuda Tomomi、Akiyama Naotaro、Kojima Hiromi
    • Journal Title

      Journal of the Association for Research in Otolaryngology

      Volume: ‐ Issue: 4 Pages: 405-424

    • DOI

      10.1007/s10162-021-00801-7

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Menin-MLL inhibitor blocks progression of middle ear cholesteatoma in vivo2021

    • Author(s)
      Yamamoto-Fukuda Tomomi、Akiyama Naotaro、Tatsumi Norifumi、Okabe Masataka、Kojima Hiromi
    • Journal Title

      International Journal of Pediatric Otorhinolaryngology

      Volume: 140 Pages: 110545-110545

    • DOI

      10.1016/j.ijporl.2020.110545

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Keratinocyte growth factor signaling promotes stem/progenitor cell proliferation under p63 expression during middle ear cholesteatoma formation2020

    • Author(s)
      Yamamoto-Fukuda Tomomi、Akiyama Naotaro
    • Journal Title

      Current Opinion in Otolaryngology & Head & Neck Surgery

      Volume: 28 Issue: 5 Pages: 291-295

    • DOI

      10.1097/moo.0000000000000655

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] L1CAM-ILK-YAP Mechanotransduction Drives Proliferative Activity of Epithelial Cells in Middle Ear Cholesteatoma2020

    • Author(s)
      Yamamoto-Fukuda Tomomi、Akiyama Naotaro、Kojima Hiromi
    • Journal Title

      The American Journal of Pathology

      Volume: 190 Issue: 8 Pages: 1667-1679

    • DOI

      10.1016/j.ajpath.2020.04.007

    • Related Report
      2020 Research-status Report
    • Peer Reviewed

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Published: 2019-04-18   Modified: 2025-01-30  

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