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Analysis of Signaling Mechanisms in Acquired Middle Ear Cholesteatoa via a Bioinformatics Approach

Research Project

Project/Area Number 19K18790
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionHokkaido University

Principal Investigator

Fukuda Atsushi  北海道大学, 大学病院, 医員 (70609742)

Project Period (FY) 2019-04-01 – 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 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords後天性中耳真珠腫 / Notchシグナル / 耳鼻咽喉科学 / Notch1 / HES1 / p53 / 後天性真珠腫 / EGFR / Notch / Ki67 / 中耳真珠腫 / ゲノム / プロテオーム
Outline of Research at the Start

後天性中耳真珠腫は、角化扁平上皮の異常増殖により側頭骨中耳に生じる境界明瞭な非腫瘍性病変である。局所浸潤性があり、頭蓋内に進展した場合は合併症により死亡する可能性がある。発症原因は未だ明確にされておらず、依然として根本的治療は外科的治療のみである。当研究では真珠腫における増殖・骨溶解シグナル伝達機構についてゲノム・プロテオーム解析を軸にして網羅的に解析し、増殖・骨溶解シグナル伝達およびそのシグナル伝達系相互のクロストークに関連した分子群を同定する。真珠腫発症・増殖・骨溶解メカニズムを分子生物学的側面から解明し、分子標的治療法開発の基盤を確立する。

Outline of Final Research Achievements

We performed polymerase chain reaction in the cholesteatoma and external auditory canal (EAC) skin samples. This was followed by immunohistochemical staining of Notch1, enhancer of split-1 (HES1) cholesteatoma and EAC skin samples, respectively. The fold change of Notch1 gene expression was lowest in cholesteatoma, with a statistically significant difference. Moreover, the fold change of HES1 expression decreased. The positive rates of Notch1 and HES1 protein expressions in the cholesteatoma were significantly lower than in the EAC skin. The decreases in Notch1 and HES1 protein expression might play an important role in the hyperproliferative character of the keratinizing squamous epithelium in cholesteatoma.

Academic Significance and Societal Importance of the Research Achievements

後天性中耳真珠腫における角化扁平上皮の異常増殖性に関して,Notch1とHES1の発現低下が病態生理に関与している可能性が本研究にて明らかになった.このことから,Notchシグナル関連分子に着目することで,後天性中耳真珠腫に対する新たな治療戦略がみつかる可能性がある.後天性中耳真珠腫の発症原因は未だ明らかではなく,依然として根本的治療は外科的治療のみであるが,新たな標的分子,シグナル伝達機構を解明することができれば,今後の後天性中耳真珠腫治療におけるbreak throughとなり,真珠腫に対する非外科的治療法開発へ大きな一歩となることが期待される.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2023 2021 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Notch Signaling in Acquired Middle Ear Cholesteatoma2021

    • Author(s)
      Fukuda Atsushi、Kano Satoshi、Nakamaru Yuji、Morita Shinya、Hoshino Kimiko、Fujiwara Keishi、Homma Akihiro
    • Journal Title

      Otology & neurotology

      Volume: 42 Issue: 9 Pages: e1389-e1395

    • DOI

      10.1097/mao.0000000000003245

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Notch Signaling in Acquired Middle Ear Cholesteatoma2023

    • Author(s)
      Atsushi Fukuda
    • Organizer
      15th ASIA OCEANIA ORL-HNS CONGRESS
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 後天性中耳真珠腫における Notchシグナル関連分子発現についての検討2021

    • Author(s)
      福田 篤,森田 真也,藤原 圭志,干野 季美子,中丸 裕爾,本間 明宏
    • Organizer
      第31回日本耳科学会総会・学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 好酸球性中耳炎EOMと中耳炎を合併した好酸球性多発血管炎性肉芽腫症EGPAの比較2019

    • Author(s)
      福田 篤、森田真也、藤原圭志、干野季美子、中丸裕爾、本間明宏
    • Organizer
      第120回日本耳鼻咽喉科学会総会・学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Comparison of eosinophilic otitis media (EOM) and eosinophilic granulomatosis with polyangiitis (EGPA) with otitis media2019

    • Author(s)
      Fukuda Atsushi, Morita Shinya, Fujiwara Keishi, Hoshino Kimiko, Nakamaru Yuji, Homma Akihiro
    • Organizer
      5th Congress of European ORL-HNS
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Comparison of eosinophilic otitis media (EOM) and eosinophilic granulomatosis with polyangiitis (EGPA) with otitis media2019

    • Author(s)
      Fukuda Atsushi, Morita Shinya, Fujiwara Keishi, Hoshino Kimiko, Nakamaru Yuji, Homma Akihiro
    • Organizer
      18th ASEAN ORL-HNS Congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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