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SAGE同定胃癌特異的発現蛋白を包括する診断用ミニプロテオームアレイの開発

Research Project

Project/Area Number 17659101
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Human pathology
Research InstitutionHiroshima University

Principal Investigator

安井 弥  広島大学, 大学院・医歯薬学総合研究科, 教授 (40191118)

Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2005: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordsミニプロテオームアレイ / SAGE法 / 胃癌 / GeneChip / モノクローナル抗体 / 免疫染色 / ELISA / 診断
Research Abstract

本年度は、胃癌の早期診断、個性診断を行なうために、SAGEで同定した遺伝子を中心としたミニプロテオームアレイを作成する目的で以下の通りに実施した。
(1)SAGE法などの網羅的遺伝子発現解析に基づいた新規癌特異的遺伝子の抽出:SAGE法において、胃癌と正常臓器のライブラリーの比較から抽出した候補遺伝子54個から9遺伝子が癌特異的であると確認しているが、本年度はSAGE法で得られた遺伝子発現リストと約45000プローブを解析できるGeneChip(Affymetrix社)で胃癌で発現態度の異なる遺伝子リストの比較を行なった。癌で発現減弱を締る遺伝子に共通性が高かったのが、発現亢進するものに重なりは少なかった。GeneChipのみで発現亢進していたものについての定量的RT-PCRの結果、PLUNC, HOXA10等の遺伝子で50%以上の症例においての過剰発現が確認された。
(2)Recombinant蛋白の調整およびモノクローナル抗体の作成:順次Recombinant蛋白の調整、モノクローナル抗体の作成を行なっており、いくつかはWestern Blotおよび免疫染色での反応性、特異性が確認できた。血清診断への応用に関しては、ELISAによるREGIV, NMP-10の検出に加えて、新規の遺伝子xの蛋白の検出も確認された。
(3)ミニプロテオームアレイの作成:これまでに癌において発現か亢進していることが知られている既知の蛋白(EGFR, TGFa, など)を含む約20抗体を用いて、インクジェットアレイヤーでスライドガラス上に少なくともtriplicateでスポットしたミニアレイを作成した。これを用いて、新鮮凍結組織および血清サンプルにおける蛋白発現、蛋白レベルの測定を開始した。特異性および定量性の確認、臨床病理学的事項との関連解析は今後の課題である。

Report

(2 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (17 results)

All 2007 2006 2005

All Journal Article (16 results) Book (1 results)

  • [Journal Article] DNA demethylation of vascular endothelial growth factor-C is associated with gene expression and its possible involvement of lymphangiogenesis in gastric cancer2007

    • Author(s)
      Matsumura S
    • Journal Title

      Int. J. Cancer 120

      Pages: 1689-1695

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Reg IV is a serum biomarker for gastric cancer patients and predicts response to 5-fluorouracil-based chemotherapy2007

    • Author(s)
      Mitani Y
    • Journal Title

      Oncogene (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Systematic search for gastric cancer-specific genes based on SAGE data : melanoma inhibitory activity and matrix metalloproteinase-10 are novel prognostic factors in patients with gastric cancer2006

    • Author(s)
      Aung PP
    • Journal Title

      Oncogene 25

      Pages: 2546-2557

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Down-regulation of the claudin-18 gene, identified through serial analysis of gene expression data analysis, in gastric cancer with an intestinal phenotype2006

    • Author(s)
      Sanada Y
    • Journal Title

      J. Pathol. 208

      Pages: 633-642

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Accumulation of DNA methylation is associated with tumor stage in gastric cancer2006

    • Author(s)
      Oue N
    • Journal Title

      Cancer 106

      Pages: 1250-1259

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Differential expression of claudin-2 in normal human tissues and gastrointestinal carcinomas2006

    • Author(s)
      Aung PP
    • Journal Title

      Virchow Arch. 448

      Pages: 428-434

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Glycogen synthase kinase-3 and H-prune regulate cell migration by modulating focal adhesions2006

    • Author(s)
      Kobayashi T
    • Journal Title

      Mol. Cell Biol. 26

      Pages: 898-911

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Molecular characteristics of differentiated-type gastric carcinoma with distinct mucin phenotype : LI-cadherin is associated with intestinal phenotype.2006

    • Author(s)
      Motoshita J
    • Journal Title

      Pathol. Int. 56

      Pages: 200-205

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Expression of Wnt-5a is correlated with aggressiveness of gastric cancer by stimulating cell migration and invasion2006

    • Author(s)
      Kurayoshi M
    • Journal Title

      Cancer Res. 66

      Pages: 10439-10448

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Molecular pathobiology of gastric cancer (review)2006

    • Author(s)
      Yasui W
    • Journal Title

      Scand. J. Surg. 95

      Pages: 225-231

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Systematic search for gastric cancer-specific genes based on SAGE data : melanoma inhibitory activity and matrix metalloproteinase-10 are novel prognostic factors in patients with gastric cancer2006

    • Author(s)
      Aung, PP.
    • Journal Title

      Oncogene (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Down-regulation of the claudin-18 gene, identified through serial analysis of gene expression data analysis, in intestinal phenotype of gastric cancer2006

    • Author(s)
      Sanada, Y.
    • Journal Title

      J.Pathol. (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Accumulation of DNA methylation is associated with tumor stage in gastric cancer2006

    • Author(s)
      Oue, N.
    • Journal Title

      Cancer (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Clinicopathological significance and prognostic influence of cadherin-17 expression in gastric cancer2005

    • Author(s)
      Ito, R.
    • Journal Title

      Virchow Arch. 447

      Pages: 717-722

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Expression and localization of RegIV in human neoplastic and non-neoplastic tissues : RegIV expression is associated with intestinal and neuroendocrine differentiation in gastric adenocarcinoma2005

    • Author(s)
      Oue, N.
    • Journal Title

      J.Pathol. 207

      Pages: 185-198

    • Related Report
      2005 Annual Research Report
  • [Journal Article] DNA methylation of genes linked with retinoid signaling in gastric cancer : expression of retinoic acid receptor b, cellular retinol binding protein land tazarotene-induced gene 1 is associated with DNA methylation2005

    • Author(s)
      Shutoh, M.
    • Journal Title

      Cancer 104

      Pages: 1609-1619

    • Related Report
      2005 Annual Research Report
  • [Book] The Diversity of Gastric Carcinoma : Pathogenesis, Diagnosis, and Therapy2005

    • Author(s)
      Yasui, W.
    • Total Pages
      353
    • Publisher
      Springer-Verlag
    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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