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Development of Nucleic Acid Drugs Targeting Tight Junction Constituent Proteins for Metastasis Prevention Therapy of Oral Cancer

Research Project

Project/Area Number 19K24147
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0907:Oral science and related fields
Research InstitutionHiroshima University

Principal Investigator

Nobumoto Tadayoshi  広島大学, 病院(歯), 歯科診療医 (80848565)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsタイトジャンクション
Outline of Research at the Start

標的遺伝子に対する高い特異性と確実な抑制効果のため,short interfering RNA(siRNA)によりRNA干渉(RNAi)を誘導する方法が広く用いられているが,これまでに有効なin vivoでのsiRNAによるRNAi誘導法は確立されていない.効果的で,安全な生体でのRNAi誘導法を確立し,腫瘍のcaludin-1発現を抑制することができれば,新しい口腔癌治療法へと発展することが期待される.

Outline of Final Research Achievements

We found that claudin-1, a major constituent of tight junctions, increases the motility and proteolytic activity of cancer cells. These results suggest that the suppression of claudin-1 expression decreases the motility and proteolytic activity of cancer cells and inhibits their invasion and metastasis.
We designed and generated several kinds of siRNAs of claudin-1, and introduced them into several kinds of cancer cells to generate cancer cells with several claudin-1 suppressive effects. Some of the generated cancer cells with claudin-1 inhibitory effect showed changes in motility.

Academic Significance and Societal Importance of the Research Achievements

標的遺伝子に対する高い特異性と確実な抑制効果のため,siRNAによるRNA干渉を誘導する方法が広く用いられている。癌関連遺伝子発現を抑制し、腫瘍増殖を阻止する試みが数多く研究されてきたが,これまでに生体での有効な誘導法は確立されていない.効果的で,安全な生体でのRNAi誘導法を確立し,腫瘍のclaudin-1発現を抑制することができれば,癌の浸潤・転移を阻止する新しい口腔癌治療法へと発展することが期待される.

Report

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

    (4 results)

All 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (2 results)

  • [Journal Article] 頬粘膜に生じた小唾液腺唾石症の1例2019

    • Author(s)
      信本忠義,吉岡幸男,檜垣美雷,坂本真一,小川郁子,虎谷茂昭,岡本哲治
    • Journal Title

      広島大学歯学会雑誌

      Volume: 51 Pages: 112-115

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A case of eosinophilic granulomatosis with polyangiitis which bilateral sublingual painless swelling occurred first2019

    • Author(s)
      信本 忠義、神田 拓、林 靖也、谷 亮治、小川 郁子、岡本 哲治
    • Journal Title

      Journal of The Japanese Stomatological Society

      Volume: 68 Issue: 4 Pages: 294-298

    • DOI

      10.11277/stomatology.68.294

    • NAID

      130007776110

    • ISSN
      0029-0297, 2185-0461
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 口腔扁平上皮癌細胞の浸潤・増殖におけるClaudin1の機能解析2019

    • Author(s)
      信本忠義,津島康司,林堂安貴,岡本哲治
    • Organizer
      第73回日本口腔科学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 口腔扁平上皮癌細胞の浸潤・増殖におけるClaudin1 の機能解析2019

    • Author(s)
      信本忠義,林堂安貴,岡本哲治
    • Organizer
      第56回日本口腔組織培養学会学術大会・総会
    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2022-01-27  

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