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マイクロアレイを用いた大腸癌術後遠隔転移の予測および新規遠隔転移関連遺伝子の検討

Research Project

Project/Area Number 20659211
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Digestive surgery
Research InstitutionTeikyo University

Principal Investigator

渡邉 聡明  Teikyo University, 医学部, 教授 (80210920)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2009: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2008: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywords大腸癌 / 血行性転移 / 遺伝子発現解析 / マイクロアレイ / テーラーメイド治療
Research Abstract

大腸癌外科的治療後の遠隔転移を来すハイリスク症例を選別できれば、ハイリスク症例に対して積極的な術後補助化学療法、あるいはintensiveな術後フォローアップを行うことにより、大腸癌外科治療後の予後の向上が期待できる。しかし、現在までに大腸癌外科的治療後の遠隔転移を高精度で予測するマーカーは確立されていない。今回、DNAマイクロアレイによる網羅的遺伝子発現解析により、大腸癌手術後に遠隔転移を来す症例を予測し、大腸癌に対するテーラーメイド治療を可能にすることを目的とした。
外科的切除が行われ、手術時に切除された大腸癌組織が直ちに凍結して保存されていて、術後5年以上経過観察されて遠隔転移の有無が確認されている症例のうち、大腸癌組織を用いた遺伝子研究に対してインフォームドコンセントが得られている128症例を対象とした。対象症例の凍結標本よりSepazolを用いtotal RNAを抽出し、T7-oligo(dT)24 primerを用いcDNAへ逆転写後、biotin標識cRNAを合成し、Affymetrix社のGeneChipにハイブリダイズして大腸癌発生及び転移や薬剤感受性に関連が考えられる約54,000種類の遺伝子発現解析を行った。遠隔転移の認められた38例と認められなかった90例の間で有意に発現の差のあった64遺伝子を抽出した。この64遺伝子を用いて、肝転移の予測式を作成した。予測式を作成する際には、GeneSpring(silicon genetics社)を用い、leave-one-out法の一種であるKNN法にて行った。この結果、予測精度68%で遠隔転移の有無の予想が可能であった。今後は、独立した症例により予測式のvalidationを行っていく必要があるが、本予測式により、遠隔転移ハイリスク例に対するテーラーメード治療が行える可能性がある。

Report

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

    (13 results)

All 2009 2008 Other

All Journal Article (13 results) (of which Peer Reviewed: 13 results)

  • [Journal Article] Gene expression signature and the prediction of lymph node metastasisin colorectal cancer by DNA microarray.2009

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

      Diseases of the Colon and Rectum 52(12)

      Pages: 1941-8

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Prognostic value of peritoneal cytology and the combination of peritoneal cytology and peritoneal dissemination in colorectal cancer.2009

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

      Diseases of the Colon and Rectum 52(12)

      Pages: 2016-21

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chromosome 18q deletion as a novel molecular predictor for colorectal cancer with simultaneous hepatic metastasis.2009

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

      Diagnostic molecular pathology 18(4)

      Pages: 219-25

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gene expression signature for recurrence in stage III colorectal cancers.2009

    • Author(s)
      Watanabe T, Kobunai T, Sakamoto E, et al.
    • Journal Title

      Cancer 115

      Pages: 283-92

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lateral pelvic lymph node dissection or chemoradiotherapy : which is the procedure of choice to reduce local recurrence rate in lower rectal cancer?2008

    • Author(s)
      Watanabe T, Matsuda K, Nozawa K, et al.
    • Journal Title

      Annals of Surgery 248

      Pages: 342-3

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Survival in microsatellite-unstable colorectal cancer.2008

    • Author(s)
      Watanabe T, Yamamoto Y, Yamada H, et al.
    • Journal Title

      Clinical Cancer Research 14

      Pages: 2516-7

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemoradiotherapy and adjuvant chemotherapy for rectal cancer.2008

    • Author(s)
      Watanabe T.
    • Journal Title

      International Journal of Clinical Oncology 13(6)

      Pages: 488-97

    • NAID

      10023919933

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent advances in chemotherapy and chemoradiotherapy for gastrointestinal tract cancers.2008

    • Author(s)
      Watanabe T.
    • Journal Title

      International Journal of Clinical Oncology 13

      Pages: 472-3

    • NAID

      10023919813

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Predicting clinical outcome to 5-Fluorouracil-based chemotherapy for colon cancer patients : is it the CpG island methylator phenotype?2008

    • Author(s)
      Iacopetta B, Kawakami K, Watanabe T
    • Journal Title

      International Journal of Clinical Oncology 13

      Pages: 498-503

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intraoperative colonoscopy for stapled anastomosis in colorectal surgery.2008

    • Author(s)
      Ishihara S, Watanabe T, Nagawa H.
    • Journal Title

      Surgery Today 38

      Pages: 1063-5

    • NAID

      10024429407

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Telomerase activity of blood samples and recurrence of colorectal cancer.2008

    • Author(s)
      Ohnishi T, Watanabe T, Nozawa H, et al.
    • Journal Title

      Hepatogastroenterology 55

      Pages: 1513-8

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Unusual Pressure-induced Rupture of Colonic Volvulus in a Patient treated with Chronic Corticosteroid Therapy.

    • Author(s)
      Tanaka T, Watanabe T, Konishi T, et al.
    • Journal Title

      Acta Gastro-enterologica Belgica (in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chromosome 18q deletion as a novel molecular predictor for colorectal cancer with simultaneous hepatic metastasis.

    • Author(s)
      Tanaka T, Watanabe T, Kitayama J, et al.
    • Journal Title

      Diagnostic molecular pathology in press

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed

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Published: 2008-04-01   Modified: 2016-04-21  

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