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Elucidation of facial nerve invasion mechanism of parotid gland cancer

Research Project

Project/Area Number 18K16910
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionOsaka Medical College

Principal Investigator

Ayani Yusuke  大阪医科大学, 医学部, 助教 (80816380)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords耳下腺癌 / TRKB / 神経浸潤 / 顔面神経麻痺 / 癌治療 / 分子標的治療 / 細胞株
Outline of Final Research Achievements

First, we showed abnormal upregulation of TRKB in human PGC. The expression was significantly high in an aggressive malignancy, SDC, comparing with a slow-growing and relentless malignancy, AdCC. Second, although high expression of TRKB was not associated with neuroinvasion in the patients with PGC (SDC and AdCC), it was significantly correlated with tumor subtype, vascular invasion, nodal metastasis, and poor prognosis. Last, BDNF-induced cell migration of PGC cells was attenuated by a TRKB specific inhibitor and an anticancer drug, larotrectinib (pan-TRK inhibitor). These findings describe the importance of the BDNF-TRKB axis in the aggressiveness of SDC and support that TRKB signaling is a therapeutic target in patients with PGC.

Academic Significance and Societal Importance of the Research Achievements

耳下腺癌は希少癌であるため、有効な治療薬が確立されておらず、新たな治療薬の開発が望まれている。本研究では神経浸潤にまつわる分子としてTRKBに注目し、TRKBが耳下腺癌の予後に関連することを見出した。将来的にTRKBをターゲットとした分子標的薬が耳下腺癌の治療薬として臨床応用されれば、社会的にも意義深いと考える。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2019 2018

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] TRKB Tyrosine Kinase Receptor Is a Therapeutic Target for Head and Neck Cancer2019

    • Author(s)
      Yusuke Ayani, Shin-Ichi Haginomori, Ryo Kawata
    • Organizer
      AAO-HNSF 2019 Annual Meeting & OTO Experience
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Therapeutic potential of targeting BDNF/TRKB signaling in poorly differentiated oral squamous cell carcinomas2018

    • Author(s)
      Yusuke Ayani, Kazumasa Moriwaki, Hiroko Kuwabara, Tetsuya Terada, Ryo Kawata, and Michio Asahi
    • Organizer
      日本癌学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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