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Analysis for genetic alteration of oral precancerous lesions

Research Project

Project/Area Number 21592337
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Morphological basic dentistry
Research InstitutionKagoshima University

Principal Investigator

SEMBA Ichiro  鹿児島大学, 医歯学総合研究科, 教授 (60145505)

Co-Investigator(Kenkyū-buntansha) HIRAYAMA Yoshikazu  鹿児島大学, 大学院・医歯学総合研究科, 助教 (50343364)
Research Collaborator OYAZATO Yoshitaka  鹿児島大学, 大学院・医歯学総合研究科, RA
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords口腔癌前癌病変 / 4NQO誘発ラット舌癌モデル / 遺伝子変異 / 遺伝子発現異常RT-PCR / 免疫組織化学 / 病理組織形態 / DNA損傷修復 / 遺伝子発現異常 / RT-PCR
Research Abstract

In this study, we successfully established field-cancerization animal model of tongue carcinoma. The model provides well compatibility of macroscopic and microscopic findings and analysis for chronological and site specific changes of the precancerous lesion. In this model, the precancerous lesion shows diffuse epithelial dysplasia and the grade of histological atypia was increased during the carcinogen administration period, although interruption of the administration of the carcinogen brought decrease the atypia but further advanced lesions such as focal protrude lesion and invasive carcinoma.
There is high level expression of genes related with double strands DNA damage repair in the precancerous lesions, and it suggests that different properties from in the invasive carcinoma.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (3 results)

All 2012 2011 2009

All Presentation (3 results)

  • [Presentation] 4NQO誘発ラット舌前癌病変モデル確立と前癌病変におけるDNA損傷修復機構の解析2012

    • Author(s)
      親里嘉貴、平野真人、嶋香織、仙波伊知郎
    • Organizer
      第101回日本病理学会総会
    • Place of Presentation
      京王プラザホテル(東京都)
    • Year and Date
      2012-04-26
    • Related Report
      2011 Final Research Report
  • [Presentation] Pathological analysis of precancerous lesion in 4NQO-induced rat tongue carcinogenesis experimental model2011

    • Author(s)
      Y. Oyazato, M. Hirano, K. Shima, I. Semba
    • Organizer
      第22回日本臨床口腔病理学会学術大会・総会、および第5回アジア口腔病理学会総会
    • Place of Presentation
      九州大学百年講堂(福岡市)
    • Year and Date
      2011-08-24
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] Oral Precancerous lesions and diagnosis2009

    • Author(s)
      仙波伊知郎
    • Organizer
      4th Asia Society of Oral and Maxillofacial Pathology(第四届亜洲口腔〓面病理学協会)
    • Place of Presentation
      Beijing, China
    • Year and Date
      2009-11-06
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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