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Roles of A-to-I RNA editing enzyme ADAR1 in malignant properties of human oral cancer cells

Research Project

Project/Area Number 19K21361
Project/Area Number (Other) 18H06269 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0907:Oral science and related fields
Research InstitutionHokkaido University

Principal Investigator

SAKATA KENI-CHIRO  北海道大学, 大学病院, 助教 (10826051)

Project Period (FY) 2018-08-24 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords口腔がん / RNA編集 / ADAR / 口腔扁平上皮がん / A to I RNA編集
Outline of Research at the Start

申請者は、以前悪性中皮腫における腫瘍悪性化因子の研究を行った際、ADAR1のファミリータンパク質であるADAR2が、腫瘍細胞の増殖、運動、および浸潤に重要なことを明らかにした。頭頸部がんでは、ADAR1の発現増強が報告されていることから、学位論文の成果と、臨床での経験を合わせ、口腔がんではADAR1が腫瘍悪性化因子となると予想した。

Outline of Final Research Achievements

The RNA editing enzyme ADAR1 is an enzyme that inserts mutations in RNA, and thus produces protein mutants. Since the expression of ADAR1 is induced by irritation, we hypothesized that RNA editing increases in oral cancer and causes malignant transformation of the tumor.
As a result of our research, we confirmed the expression of ADAR in oral cancer cells. We also analyzed the RNA editing of the COPA protein, which was thought to cause the tumor malignant transformation by the COPA protein responsible for the reverse transport of protein from the Golgi apparatus to the endoplasmic reticulum, and confirmed that RNA editing occurs at a certain rate.

Academic Significance and Societal Importance of the Research Achievements

口腔がんは、進行した病態で発見されることが多く、進展症例に対する分子標的薬も限られており、新たな薬の開発が望まれている。RNA編集は、酵素反応のため可逆的かつ短時間で生じ、がん細胞の多様性や、がん細胞集団の迅速なストレス応答を説明できるため、注目を集めている。口腔がんにおける RNA編集の一役割を解明することで、新規治療薬の開発が期待される。上記を解明することにより、外科的切除により大きく失われる口腔機能(発音、咀嚼、整容性、嚥下など)を損なうことが防げると期待する。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (3 results)

All 2020 2019

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

  • [Journal Article] ADAR2 Regulates Malignant Behaviour of Mesothelioma Cells Independent of RNA-editing Activity.2020

    • Author(s)
      Sakata KI, Maeda K, Sakurai N, Liang S, Nakazawa S, Yanagihara K, Kubo T, Yoshiyama H, Kitagawa Y, Hamada JI, Iizasa H.
    • Journal Title

      ANTICANCER RESEARCH

      Volume: 40 Issue: 3 Pages: 1307-1314

    • DOI

      10.21873/anticanres.14072

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] <b>Dominant-negative p53 mutant R248Q increases the motile and invasive activities of oral squamous cell carcinoma</b><b> cells </b>2019

    • Author(s)
      Seitaro Nakazawa, Ken-ichiro Sakata, Shanshan Liang, Kazuhito Yoshikawa, Hisashi Iizasa, Mitsuhiro Tada, Jun-ichi Hamada, Haruhiko Kashiwazaki, Yoshimasa Kitagawa, Yutaka Yamazaki.
    • Journal Title

      Biomedical Research

      Volume: 40 Issue: 1 Pages: 37-49

    • DOI

      10.2220/biomedres.40.37

    • NAID

      130007602457

    • ISSN
      0388-6107, 1880-313X
    • Year and Date
      2019-02-01
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 当科における80歳以上口腔がん手術症例の検討2019

    • Author(s)
      榊原典幸、水野貴行、加藤卓己、日笠紘志、坂田健一郎※1、竹川英輝、箕輪和行
    • Organizer
      口腔腫瘍学会
    • Related Report
      2018 Annual Research Report

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Published: 2018-08-27   Modified: 2024-03-26  

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