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The autocrine mechanism of suprabasin via TPD52 family proteins

Research Project

Project/Area Number 20K18738
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Miyamoto Saya  昭和大学, 歯学部, 助教 (60867737)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords口腔扁平上皮癌 / 低酸素 / スプラバシン / 血管新生 / 細胞浸潤 / アポトーシス / オートファジー / オートクライン / TPD52 / 低栄養 / 口腔癌 / TPD52ファミリー / 癌
Outline of Research at the Start

本研究計画の目的は、研究計画期間において、①様々なタンパク相互結合アッセイを用いて、口腔扁平上皮癌細胞においてTPD52ファミリータンパクがSBSNに結合しうるか、②その場合は、それぞれのタンパクのどのモジュールが中心的役割を果たしているのか、また、③結合能がタンパクの翻訳後修飾(リン酸化など)を受けているかを検索する。さらに、④これらの相互作用が口腔扁平上皮癌細胞におけるSBSNの分泌(オートクライン)を介して、細胞の増殖・浸潤・転移の能力にどのような影響を及ぼしているかをin vitro実験を中心にして検索する。

Outline of Final Research Achievements

We discovered Suprabasin (SBSN) as a secreted protein that binds to TPD52, a protein specific to oral squamous cell carcinoma cells (OSCC), and is transported outside the cells. SBSN is a secreted protein identified in epithelial cells such as the esophagus and skin, and is known to play an important role in the proliferation and metastasis of oral squamous cell carcinoma cells. Therefore, in this study, we investigated the expression and function of SBSN in oral squamous cell carcinoma cells under hypoxia. The results revealed that SBSN is involved in cell death resistance in hypoxic OSCC by inducing cell invasion and angiogenesis rather than inducing autophagy.

Academic Significance and Societal Importance of the Research Achievements

低酸素下の口腔扁平上皮癌細胞においては, SBSNは細胞浸潤, 血管新生に重要な役割を果たすことが明らかとなった。この知見は口腔扁平上皮癌に対する化学療法において、新たな分子標的薬のターゲットを見出したことを意味する。ゆえに、本研究は口腔がん治療における一つのマイルストーンになることが期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (3 results)

All 2023

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Suprabasin enhances the invasion, migration, and angiogenic ability of oral squamous cell carcinoma cells under hypoxic conditions2023

    • Author(s)
      Houri Asami、Mukudai Yoshiki、Abe Yuzo、Watanabe Masataka、Nara Maki、Miyamoto Saya、Kurihara Mai、Shimane Toshikazu、Shirota Tatsuo
    • Journal Title

      Oncology Reports

      Volume: 49 Issue: 5 Pages: 1-1

    • DOI

      10.3892/or.2023.8520

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 口腔扁平上皮癌細胞においてスプラバシンは低酸素下における細胞浸潤・血管誘引を増強する2023

    • Author(s)
      椋代義樹、祝部亜紗美、安部勇蔵、栗原舞、渡邊匡崇、奈良真希、金田一和香、宮本裟也、嶋根俊和、代田達夫
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Suprabasin enhances the invasion, migration, and angiogenic ability of oral squamous cell carcinoma cells under hypoxic conditions2023

    • Author(s)
      Asami Noro,Yoshiki Mukudai,Yuzo Abe,Tatsuo Shirota
    • Organizer
      25th International Conference on Oral Maxillofacial Surgery
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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