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Identification and analysis of biokinetics of a lysosomal transcription factor that controls the infiltration of oral cancer cells

Research Project

Project/Area Number 19K19203
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionNagasaki University

Principal Investigator

Hiroshi Sakamoto  長崎大学, 医歯薬学総合研究科(歯学系), 助教 (40836748)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords口腔扁平上皮癌 / リソソーム / 浸潤・転移 / リソソーム転写因子 / 口腔癌細胞 / TFEB / 転写因子
Outline of Research at the Start

我々は独自の研究から、扁平上皮癌の浸潤能と相関する転写因子TFEBを同定した。TFEBはリソソームタンパク質を制御するマスター分子として機能する。我々はin vitro の実験で、扁平上皮癌細胞においてTFEBを抑制すれば浸潤能が劇的に低下することを見出した。本研究の目的は、我々が見出したTFEBの扁平上皮癌による浸潤と転移の関与について、マウス個体を用いて明らかにする事である。そのために担癌モデルマウスや生物発光イメージング法を用いて、生体内での機能と病態の関係を解明する。本研究は不明な点が多く残されていた癌細胞の浸潤と転移を制御するTFEBに関する生体内の詳細なメカニズムを解明する。

Outline of Final Research Achievements

Invasion and metastasis are the major factors that cause cancer cells to kill patients. From our own research, we identified the transcription factor TFEB, which correlates with the invasion of oral squamous cell carcinoma. TFEB functions as a master regulator that controls various lysosomal proteins. The purpose of this study is to clarify the involvement of invasion and metastasis of TFEB found by squamous cell carcinoma using in vitro experiments and in vivo experiments using mice. First, in vitro experiments showed that suppression of TFEB in squamous cell carcinoma cells dramatically reduced invasion. Next, a cancer-bearing mouse model transplanted with nude mice was prepared and the anti-tumor effects were compared. As a result, almost the same results were obtained.

Academic Significance and Societal Importance of the Research Achievements

癌細胞が患者の生命を奪う最大の要因は浸潤と転移であるが、この2つを防ぐ有効な治療法は未だない。癌細胞におけるリソソーム性プロテアーゼの分泌量と癌細胞の浸潤・転移には強い相関がある事が報告されており、リソソーム性プロテアーゼは癌細胞が周辺組織を浸潤する際に大量に分泌され、癌転移において重要な役割を果たす。従って、本研究の結果より、リソソームのマスター分子として機能するTFEBを制御すれば、癌細胞の浸潤・転移に予防、診断、治療への幅広い応用が可能である。

Report

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

    (4 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results)

  • [Journal Article] Predisposing conditions for condylar sag after intraoral vertical ramus osteotomy2021

    • Author(s)
      Rokutanda Satoshi、Yamada Shin-Ichi、Yanamoto Souichi、Sakamoto Hiroshi、Omori Keisuke、Rokutanda Hiromi、Yoshimi Tomoko、Fujishita Ayumi、Morita Yukiko、Yoshida Noriaki、Umeda Masahiro
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41598-021-89968-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Odontogenic gingival epithelial hamartoma with a pleomorphic histological appearance: a case report and review of the literature2021

    • Author(s)
      Sakamoto H, Fujita S, Umeda M, Rokutanda S.
    • Journal Title

      Int J Oral Maxillofac Surg

      Volume: 12 Issue: 9 Pages: 1182-1186

    • DOI

      10.1016/j.ijom.2021.01.007

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anterior relapse or posterior drift after intraoral vertical ramus osteotomy.2020

    • Author(s)
      Rokutanda S, Yamada SI, Yanamoto S, Sakamoto H, Furukawa K, Rokutanda H, Yoshimi T, Nakamura T, Morita Y, Yoshida N, Umeda M.
    • Journal Title

      Sci Rep.

      Volume: 10 Issue: 1 Pages: 3858-3858

    • DOI

      10.1038/s41598-020-60838-1

    • NAID

      120006988277

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of the changes in the condylar long axis angle and condylar position on temporomandibular symptoms after intraoral vertical ramus osteotomy: a preliminary study2019

    • Author(s)
      Rokutanda S, Yamada SI, Yanamoto S, Sakamoto H, Morita Y, Rokutanda H, Kohara H, Yoshimatsu M, Yoshimi T, Nakamura T, Ino-Kondo A, Moriuchi E, Umeda M.
    • Journal Title

      Oral Surg Oral Med Oral Pathol Oral Radiol

      Volume: 128 Issue: 6 Pages: 597-605

    • DOI

      10.1016/j.oooo.2019.08.012

    • Related Report
      2019 Research-status Report
    • Peer Reviewed

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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