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Wnt亢進とBMP抑制の相互作用による胃がん発生機序の研究

Research Project

Project/Area Number 20012015
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionKanazawa University

Principal Investigator

大島 正伸  Kanazawa University, がん研究所, 教授 (40324610)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥12,800,000 (Direct Cost: ¥12,800,000)
Fiscal Year 2009: ¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 2008: ¥6,400,000 (Direct Cost: ¥6,400,000)
KeywordsWnt / BMP / 胃がん / 過誤腫 / マウスモデル
Research Abstract

消化管上皮細胞の分化増殖はWntおよびBMPシグナルにより制御されている。Wntは未分化性維持に作用し、BMPは分化を促進する。また、BMPシグナルにはPI-3K/Akt経路の阻害によりWntシグナルを負に制御可能性も報告されている。遺伝子の変異やメチル化によるWntシグナル活性化は消化管腫瘍発生の原因となる。一方、BMP受容体I型遺伝子の変異などによるBMPシグナル遮断は遺伝性若年性ポリープ症の原因として知られている。しかし、胃腫瘍発生におけるBMPシグナル抑制の関与について、これまでにマウスモデルを用いた解析がなされていない。そこで、BMPシグナルの内在性阻害因子であるNoggin遺伝子を胃粘膜上皮で発現誘導させたK19-Nogトランスジェニックマウスを作製して解析した。K19-Nogマウスの胃上皮ではBMPシグナルが抑制されてSmad1/5/8のリン酸化が阻害された。しかし、K19-Nogマウスの胃粘膜には腫瘍病変は全く観察されなかった。これまでの研究により、胃粘膜でWntシグナルを亢進させても腫瘍は発生せず、WntとCOX-2/PGE_2経路を同時に活性化させると胃がんが発生することが明らかである。そこで、K19-NogマウスとK19-C2mEマウスを交配してK19-Nog/C2mEマウスを作製し、胃粘膜でBMP抑制と同時にCOX-2/PGE_2経路を誘導させて炎症反応を起こさせた。その結果、胃粘膜には大きな腫瘍が約20%の頻度で発生し、組織学的には若年性ポリープ症患者で認められる過誤腫に類似していた。したがって、BMP抑制は腫瘍発生の引き金となるが、それだけでは腫瘍発生に至らず、PGE_2経路の誘導に依存して炎症反応がともなう時に過誤腫が発生することがはじめて明らかになった。遺伝子発現解析の結果、WntとPGE_2で発生する胃がんとは異なる発現プロファイルが認められた。以上の結果は、今後の胃過誤腫の分子発生機序の研究に有用な情報となる。

Report

(2 results)
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (26 results)

All 2010 2009 2008 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (14 results) Book (2 results) Remarks (2 results)

  • [Journal Article] Induction of proltaglandin E2 pathway promotes gastric hamartoma development with suppression of bone morphogenetic protein signaling.2009

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

      Cancer Research 69

      Pages: 2729-2733

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Induction and downregulation of Sox17 and its possible roles during the course of gastrointestinal2009

    • Author(s)
      Du YC, et al.
    • Journal Title

      Gastroenterology 137

      Pages: 1346-1357

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Prostaglandin E2, Wnt and BMP in gastric tumor mouse models.2009

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

      Cancer Science 100

      Pages: 1779-1785

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mouse gastric tumor models with prostaglandin E2 pathway activation show similar gene expression profiles to intestinal-type human gastric cancer.2009

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

      BMC Genomics 10

      Pages: 615-615

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gastric tumorigenesis through EGFR activation in Wnt and PGE2 transgenic mice2009

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

      Cancer Research 69(in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Activated macrophages promote Wnt signaling through tumor necrosis factor-α in gastric tumor cell2008

    • Author(s)
      Oguma K, et.al.
    • Journal Title

      EMBO Journal 27

      Pages: 1671-1681

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stromal fiboblasts activated by tumor cells promote angiogenesis in mouse gastric cancer2008

    • Author(s)
      Guo X, et.al.
    • Journal Title

      Journal of Biological Chemistry 11(掲載確定)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Platelet 12-lipoxigenase accelerates tumor promotion of mouse epidermal cells through enhancement of cloning efficiency2008

    • Author(s)
      Piao YS, et.al.
    • Journal Title

      Carcinogenesis 29

      Pages: 440-447

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] 炎症と胃がん発生:Pathway specificマウスモデルからのアプローチ2010

    • Author(s)
      大島正伸
    • Organizer
      第26回日本毒性病理学会
    • Place of Presentation
      石川県立音楽堂(石川県)
    • Year and Date
      2010-02-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] Promotion of Wnt/β-catenin signaling by TNF-α in gastrointestinal tumor cells.2009

    • Author(s)
      小熊圭祐、大島浩子、大島正伸
    • Organizer
      第32回日本分子物学会
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2009-12-10
    • Related Report
      2009 Annual Research Report
  • [Presentation] 胃がん発生におけるCOX-2/PGE2経路の役割2009

    • Author(s)
      大島正伸
    • Organizer
      第51回日本消化器病学会
    • Place of Presentation
      国立京都国際会館(京都府)
    • Year and Date
      2009-10-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] Inflammation and gastric tumor mouse model.2009

    • Author(s)
      Oshima H, et al.
    • Organizer
      68^<th> Annual Meeting fbr Japanese Cancer Association
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2009-10-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] Gastric tumorigenesis through suppression of BMP signaling.2009

    • Author(s)
      Oshima M, et al.
    • Organizer
      68^<th> Annual Meeting fbr Japanese Cancer Association
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2009-10-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] Prostaglandin E2 signaling and inflammation in gastric tumorigenesis.2009

    • Author(s)
      Oshima M.
    • Organizer
      29^<th> International Symposium on Cancer
    • Place of Presentation
      北海道大学学術交流会館(北海道)
    • Year and Date
      2009-07-13
    • Related Report
      2009 Annual Research Report
  • [Presentation] Expression of Wnt antagonist Sox17 during the course of gastrointestinal tumorigenesis.2009

    • Author(s)
      Du YC, et al.
    • Organizer
      29^<th> International Symposium on Cancer
    • Place of Presentation
      北海道大学学術交流会館(北海道)
    • Year and Date
      2009-07-13
    • Related Report
      2009 Annual Research Report
  • [Presentation] Gastric tumorigenesis caused by cooperation of inflammation and oncogenic activation.2009

    • Author(s)
      Oshima M.
    • Organizer
      17^<th> International Symposium on Molecular Cell Biology of Macrophages
    • Place of Presentation
      金沢KKRホテル(石川県)
    • Year and Date
      2009-07-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Activated macrophages promote Wnt/β-catenin signaling activity in gastric epithelial cells through TNF-α.2009

    • Author(s)
      Oguma K, et al.
    • Organizer
      100^<th> Annual Meeting of AACR
    • Place of Presentation
      Denver Convention Center, (USA)
    • Year and Date
      2009-04-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] Promotion of Wnt signaling by activated macrophage-derived TNF-α2008

    • Author(s)
      Oguma K, et.al.
    • Organizer
      第67回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-10-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] Gastric tumorigenesis through EGFR activation in Wnt and PGE2 transgenic mice2008

    • Author(s)
      Oshima H, et.al.
    • Organizer
      第67回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-10-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] Inflammation accelerates tumorigenesis through promotion of Wnt signaling2008

    • Author(s)
      Oshima M
    • Organizer
      第67回日本癌学会学術総会
    • Place of Presentation
      名古屋
    • Year and Date
      2008-10-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] 新規マウスモデルを用いた胃がん発生分子機序の解析2008

    • Author(s)
      大島正伸
    • Organizer
      第97回日本病理学会
    • Place of Presentation
      金沢
    • Year and Date
      2008-05-16
    • Related Report
      2008 Annual Research Report
  • [Presentation] Inflammatory responses accelerate Wnt signaling in gastric epithelial cells2008

    • Author(s)
      Oshima M, et.al.
    • Organizer
      第99回アメリカ癌学会学術総会(Annual Meeting of AACR)
    • Place of Presentation
      サンディエゴ(米国)
    • Year and Date
      2008-04-15
    • Related Report
      2008 Annual Research Report
  • [Book] 分子細胞治療特集「炎症反応と消化器発がん」2009

    • Author(s)
      小熊圭祐、大島正伸
    • Publisher
      先端医学社
    • Related Report
      2009 Annual Research Report
  • [Book] "Prostaglandin and transforming growth factor β signaling in gastric cancer" in The Biology of Gastric Cancer2008

    • Author(s)
      Oshima M, et.al.
    • Total Pages
      28
    • Publisher
      Springer (New York)
    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.kanazawa-u.ac.jp/~ganken/oshima/index.html

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.kanazawa-u.ac.jp/-ganken/oshima/index.html

    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2018-03-28  

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