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2009 Fiscal Year Annual Research Report

膵臓、婦人科領域がんの分子診断の新局面

Research Project

Project/Area Number 17015003
Research InstitutionTohoku University

Principal Investigator

堀井 明  Tohoku University, 大学院・医学系研究科, 教授 (40249983)

Keywordsがん / ゲノム / 発現制御 / 個別化医療 / がん遺伝子 / がん抑制遺伝子 / メチル化 / 抗がん剤耐性
Research Abstract

膵癌において高頻度に過剰発現るS100A4遺伝子は低メチル化によるが、遺伝子機能をRNAi法で抑制すると、増殖能と浸潤能が抑制され、Tissue arrayにより高発現と神経浸潤との関係が明らかとなっな。また、ノックダウンにより発現亢進する遺伝子の中にがん抑制遺伝子であるPRDM2や血管新生を抑制するVASH1があることが判明した。また、移動の亢進が見られた。その際に発現が亢進する遺伝子をマイクロアレイ解析により絞り込んだ。なお、S100A4遺伝子の発現は第一イントロンの2箇所のCpG部位のメチル化で制御されている。
メチル化で発現が抑制されている遺伝子の発現を回復させる方法として、新たにMeTA法を開発し、膵癌と肺癌で検討し、新規の発現抑制の可能性のある遺伝子群を抽出した。
膵癌においてGemcitabine感受性が比較的高いものと低いもの、これらの中間のものを用い、Gemcitabine耐性し膵癌細胞株を樹立した。これらの細胞における変化をマイクロアレイ解析で進めている。
NDRG2はMYCによって制御される候補がん抑制遺伝子であるが、膵癌、胃癌、大腸癌などの消化器がんで高頻度に発現抑制されている。メカニズムはメチル化トヒストン修飾である。
がん抑制遺伝子DUSP6は膵癌で発現が抑制されているが、機構はCpGサイトのメチル化で発現抑制されており、同部へのETS2の結合メチル化で阻害されることが重要である。

  • Research Products

    (17 results)

All 2010 2009 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (9 results) Remarks (1 results)

  • [Journal Article] Upregulation of IGF2(insulin-like growth factor 2)is associated with an acquired resistance for cis-diamminedichloroplatinum in human head and neck squamous cell carcinoma2010

    • Author(s)
      Ogawa T, Horii A, et al.
    • Journal Title

      Eur Arch Otorhinolarynlgol (in press)

    • Peer Reviewed
  • [Journal Article] Identification of a new adhesin-like protein from Lactobacillus mucosae ME-340 with specific affinity to the human blood group A and B antigens2010

    • Author(s)
      Watanabe M, Horii A, et al.
    • Journal Title

      J Appl Microbiol (in press)

    • Peer Reviewed
  • [Journal Article] Familial cervical paragangliomas with lymph node metastasis expressing somatostatin receptor type 2A.2010

    • Author(s)
      Kimura N, Horii A, et al.
    • Journal Title

      Endocr Pathol (in press)

    • Peer Reviewed
  • [Journal Article] Identification of 52 genes associated with the CDDP susceptibility in the head and neck squamous cell carcinoma cell lines by cDNA microarray analysis2010

    • Author(s)
      Ogawa T, Horii A, et al.
    • Journal Title

      Eur Arch Otorbinolaryngol 267

      Pages: 123-129

    • Peer Reviewed
  • [Journal Article] siRNA-mediated knockdown against CDCA1 and KIVTC2, both frequently overexpressed in colorectal and gastric cancers, suppresses cell proliferation and induces apoptosis2009

    • Author(s)
      Kaneko N, Horii A, et al.
    • Journal Title

      Biochem Biophys Res Commun 390

      Pages: 1235-1240

    • Peer Reviewed
  • [Journal Article] RNA interference targeting against S100A4 suppresses cell growth and motility and induces apoptosis in human pancreatic cancer cells2009

    • Author(s)
      Tabata T, Horii A, et al.
    • Journal Title

      Biochem Biophys Res Commun 390

      Pages: 475-480

    • Peer Reviewed
  • [Journal Article] LIV-1 enhances the aggressive phenotype through the induction of epithelial to mesenchymal transition in human pancreatic carcinoma cells2009

    • Author(s)
      Unno J, Horii A, et al.
    • Journal Title

      Int J Oncol 35

      Pages: 813-821

    • Peer Reviewed
  • [Presentation] Identification of epigenetically silenced genes by the novel "metllyl-QpG targeted transcriptional activation" method in human pancreatic cancer2010

    • Author(s)
      Shimuzu H, Horii A, et al.
    • Organizer
      Eighth Joint Conference of the American Association for Cancer Research and the Japanese Cancer Association
    • Place of Presentation
      Waikoloa, HI
    • Year and Date
      2010-02-08
  • [Presentation] Upregulation of IGF2(insulin-like growth factor 2)is associated with an acquired resistance for cis-diamminedichloroplatinum in human head and neck squamous cell carcinoma2010

    • Author(s)
      Ogawa T, Horii A, et al.
    • Organizer
      Eighth Joint Conference of the American Association for Cancer Research and the Japanese Cancer Association
    • Place of Presentation
      Waikoloa, HI
    • Year and Date
      2010-02-06
  • [Presentation] Methyl-CpG targeted transcriptional activation identifies transcriptionally silenced genes by DNA hypermethylation2009

    • Author(s)
      Sato Y, Horii A, et al.
    • Organizer
      第68回 日本癌学会学術総会
    • Place of Presentation
      横浜
    • Year and Date
      2009-10-02
  • [Presentation] A new approach by the combination of methyl-CpG targeted transcriptional activation and gene expression microarray identifies epigenetically silencedgenes in pancreatic cancers2009

    • Author(s)
      Fukushige S, Horii A, et al.
    • Organizer
      第68回 日本癌学会学術総会
    • Place of Presentation
      横浜
    • Year and Date
      2009-10-01
  • [Presentation] Role of activation of the ALK gene and related downstream molecules in neuroblastoma2009

    • Author(s)
      Gu Z, Horii A, et al.
    • Organizer
      第68回 日本癌学会学術総会
    • Place of Presentation
      横浜
    • Year and Date
      2009-10-01
  • [Presentation] S100A4 regulates cell growth and motility in pancreatic cancer cells2009

    • Author(s)
      Sekine H, Horii A, et al.
    • Organizer
      第68回 日本癌学会学術総会
    • Place of Presentation
      横浜
    • Year and Date
      2009-10-01
  • [Presentation] Promoter hypermethylation and reduced expression of NDRG2 in gastrointestinal cancers2009

    • Author(s)
      Yamamura A, Horii A, et al.
    • Organizer
      第68回 日本癌学会学術総会
    • Place of Presentation
      横浜
    • Year and Date
      2009-10-01
  • [Presentation] The methylation status of FBXW7 beta-form correlates with histological subtype in human thymoma2009

    • Author(s)
      Gu Z, Horii A, et al.
    • Organizer
      100th American Association for Cancer Research
    • Place of Presentation
      Denver, CO
    • Year and Date
      2009-04-20
  • [Presentation] Transcriptional regulation of DUSP6 in a feedback loop manner responding to MAPK1 via ETS2 in human cells2009

    • Author(s)
      Furukawa T, Horii A, et al.
    • Organizer
      100th American Association for Cancer Research
    • Place of Presentation
      Denver, CO
    • Year and Date
      2009-04-19
  • [Remarks]

    • URL

      http://www.med.tohoku.ac.jp/org/medical/13/index.html

URL: 

Published: 2011-06-16   Modified: 2016-04-21  

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