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バレット上皮形成促進因子のクローニングとこれを標的としたバレット癌の遺伝子治療

Research Project

Project/Area Number 16659186
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Gastroenterology
Research InstitutionShimane University

Principal Investigator

木下 芳一  島根大学, 医学部, 教授 (30243306)

Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2006: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2005: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2004: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywords食道 / バレット上皮 / 逆流性食道炎 / 増殖因子 / 分化 / 胆汁酸 / 腸上皮化生 / 胃酸 / 線維芽細胞 / クローニング
Research Abstract

逆流性食道炎に続発して形成され、高い発癌ポテンシャルを有するパレット食道の形成機序を明らかとすることを目的に、食道粘膜の線維芽細胞の役割について注目し研究を行った。仮説は食道の扁平上皮が逆流胃酸で消化され逆流性食道炎が形成されると間質の線維芽細胞に胃酸が直接に接触するようになり、線維芽細胞が増殖因子やサイトカインの産生をして、この増殖因子やサイトカインが扁平上皮の杯細胞に作用して分化異常をおこし腸型の円柱上皮化生をおこすとするものである。本年度はヒトの胎児由来の比較的未分化な培養線維芽細胞を用いて、この線維芽細胞に酸性の負荷を行った。pH5.0の負荷を20分間行い、その後中性pHにもどし直後から24時間後まで1時間おきに培養線維芽細胞よりメッセンジャーRNAを得た。このRNAを用いてc-fosとIL-8のメッセンジャーRNAの著明な発現充進のあることが明らかとなった。また、IL-8の発現亢進は蛋白レベルでも確認することが可能であった。そこで酸負荷前と酸負荷後のメッセンジャーRNAより、cDNAを作製し、これを用いてILLUMINA社のIlumina Bead Array DNAマイクロアレイを用いて酸負荷によって発現が3倍以上に亢進するものについて検討を行った。全体として約1万種の中で約500種のcDNAの3倍以上の発現増加を認めた。この中でPDGF-beta polypeptide, PDGF-alpha polypeptide, HBEGF-like growth factorについては、上皮系細胞の増殖と分化に関与している可能性が報告されている

Report

(3 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (17 results)

All 2007 2006 2005 2004 Other

All Journal Article (17 results)

  • [Journal Article] Biopsy specimens have to be taken from the2007

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Gastrointestinal Endoscopy 65

      Pages: 181-181

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Bile acids directly augment caudal-related homeobox2006

    • Author(s)
      Kazumori H, et al.
    • Journal Title

      Gut 55

      Pages: 16-35

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Prevalence of and risk factors for Barrett' s2006

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Scand J Gastroenterol 41

      Pages: 873-879

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Evaluation of modified crystal violet chromoendoscopy2006

    • Author(s)
      Yuki T, et al.
    • Journal Title

      Digestive and Liver Disease 38

      Pages: 296-300

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Which landwark vesults in a more consistent diagnosis2006

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Gastrointestinal Endoscopy 64

      Pages: 206-211

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Localization of early stage dysplastic Barrett' s2006

    • Author(s)
      Moriyama N, et al.
    • Journal Title

      Am J Gastroenterol 101

      Pages: 2666-2667

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Efficacy of proton pump inhibitors for cellular2006

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Aliment Pharmacol Ther 24

      Pages: 41-48

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Bile acids directly augment caudal-related homeobox gene Cdx22006

    • Author(s)
      Kazumori H, et al.
    • Journal Title

      Gut. 55

      Pages: 16-25

    • Related Report
      2005 Annual Research Report
  • [Journal Article] RNA polymerase II mediated transcription from the polymerase III2006

    • Author(s)
      Rumi MAK, et al.
    • Journal Title

      Biochem Biophys Res Commun. 339

      Pages: 540-547

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Crystal violet chromoendoscopy wit mucosal pit pattern diagnosis2005

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Am J Gastroenterol. 100

      Pages: 21-26

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Interleukin-8 regulates expression of Reg protein in Helicobacter2005

    • Author(s)
      Yoshino N, et al.
    • Journal Title

      Am J Gastroenterol. 100

      Pages: 2157-2166

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Crystal violet chromoendoscopy with mucosal pit2005

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Am J Gasreoenterol 100

      Pages: 21-26

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Barrett's esophagus with predominant intestinal2004

    • Author(s)
      Amano Y, et al.
    • Journal Title

      Aliment Pharmacol Ther 20

      Pages: 793-802

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Transgenic overexpression of Reg protein caused2004

    • Author(s)
      Miyaoka Y, et al.
    • Journal Title

      Oncogene 23

      Pages: 3572-3579

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Essential role of MD-2 in Toll-like receptor2004

    • Author(s)
      Ishihara S, et al.
    • Journal Title

      J Immunol 173

      Pages: 1406-1416

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Predictors for squamous re-epithelization of

    • Author(s)
      Amano Y, et al.
    • Journal Title

      J Gastroenterol Hepatol (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] REG1 α protein expression in Barrett' s esophagus

    • Author(s)
      Chinuki D, et al.
    • Journal Title

      J Gastroenterol Hepatol (in press)

    • Related Report
      2006 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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