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2014 Fiscal Year Annual Research Report

血液中遊離DNAの腫瘍マーカーとしての実用化ーLINE1を中心として

Research Project

Project/Area Number 24300337
Research InstitutionThe University of Tokyo

Principal Investigator

須並 英二  東京大学, 医学部附属病院, 講師 (70345205)

Co-Investigator(Kenkyū-buntansha) 津野 寛和  東京大学, 医学部附属病院, 講師 (50282637)
川合 一茂  東京大学, 医学部附属病院, 助教 (80571942)
Project Period (FY) 2012-04-01 – 2015-03-31
Keywords大腸癌 / バイオマーカー / 血中遊離DNA / LINE1
Outline of Annual Research Achievements

担癌患者の末梢血遊離DNA は癌組織に由来して健常人より高濃度に存在し、様々な遺伝子解析に応用されている。癌のepigeneticな変化として重要なglobal hypomethylationに注目し、大腸癌患者の血漿中遊離DNAのメチル化レベルを定量し、臨床的有用性を検討した。
2012年4月から2014年7月に切除術を施行した大腸癌患者112人、対照群として健常人30人より血漿を採取した。遊離DNAはフェノール・クロロホルム法で抽出し、濃度をPicoGreen assayで定量した。メチル化レベルはLINE-1遺伝子のpromotor領域(148bp)を対象に、バイサルファイト処理後、absolute quantitative analysis of methylated alleles realtime PCR (AQAMA)によって定量した。LINE-1 hypomethylation index (LHI) をunmethylation copy number / methylation + unmethylation copy numberと定義し解析に用いた。
大腸癌患者の血漿遊離DNA量および血漿LHIは健常人より有意な上昇を示した(遊離DNA:16.1 ± 9.72 ng/ml vs 11.3 ± 3.41 ng/ml, P = 0.0014、血漿LHI:0.33 ± 0.029 vs 0.37 ± 0.042, P < 0.0001)。臨床病理学的因子の検討では腫瘍長径と血漿LHIの間に弱いが有意な相関を認めた(r = 0.19, P = 0.039)。一方、遠隔転移例で血漿LHIが高い傾向があったが(P = 0.096)、Stage I-IV間で有意差は無かった。組織中のhypomethylationは腫瘍進展の早期より生じるとする報告があり、同様の傾向を血漿遊離DNAが反映する可能性を示唆した。健常人と癌患者を識別するスクリーニング検査としての有用性はROC曲線で評価し、血漿遊離DNA量は至適カットオフ値12.1ng/ml 、感度 67.0%、特異度66.7%、AUC 0.69、血漿LHIは至適カットオフ値0.36、感度67.0%、特異度86.7%、AUC 0.82と計算され、AUCの比較では血漿LHIが有意に優れた (P = 0.048)。
結論として血漿LHIは大腸癌を早期発見可能な腫瘍マーカーとして有用である可能性が示唆された。

Research Progress Status

26年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

26年度が最終年度であるため、記入しない。

Causes of Carryover

26年度が最終年度であるため、記入しない。

Expenditure Plan for Carryover Budget

26年度が最終年度であるため、記入しない。

  • Research Products

    (14 results)

All 2015 2014

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (1 results)

  • [Journal Article] Prediction of the preoperative chemoradiotherapy response for rectal cancer by peripheral blood lymphocyte subsets.2015

    • Author(s)
      Tada N, Kawai K, Tsuno NH, Ishihara S, Yamaguchi H, Sunami E, Kitayama J, Oba K, Watanabe T.
    • Journal Title

      World J Surg Oncol

      Volume: 13 Pages: 30

    • DOI

      10.1186/s12957-014-0418-0

    • Peer Reviewed
  • [Journal Article] Phosphatidylserine-specific phospholipase A1 (PS-PLA1) expression in colorectal cancer correlates with tumor invasion and hematogenous metastasis.2015

    • Author(s)
      Iida Y, Sunami E, Yamashita H, Hiyoshi M, Ishihara S, Yamaguchi H, Inoue A, Makide K, Tsuno NH, Aoki J, Kitayama J, Watanabe T.
    • Journal Title

      Anticancer Res

      Volume: 35 Pages: 1459-64

    • Peer Reviewed
  • [Journal Article] A phase I dose escalation study of oxaliplatin plus oral S-1 and pelvic radiation in patients with locally advanced rectal cancer (SHOGUN trial).2015

    • Author(s)
      Ishihara S, Matsusaka S, Kondo K, Horie H, Uehara K, Oguchi M, Murofushi K, Ueno M, Mizunuma N, Shinbo T, Kato D, Okuda J, Hashiguchi Y, Nakazawa M, Sunami E, Kawai K, Yamashita H, Okada T, Ishikawa Y, Nakajima T, Watanabe T.
    • Journal Title

      Radiat Oncol

      Volume: 10 Pages: 24

    • DOI

      10.1186/s13014-015-0333-8

    • Peer Reviewed
  • [Journal Article] Nomogram prediction of metachronous colorectal neoplasms in patients with colorectal cancer.2015

    • Author(s)
      Kawai K, Ishihara S, Yamaguchi H, Sunami E, Kitayama J, Miyata H, Watanabe T.
    • Journal Title

      Ann Surg

      Volume: 261 Pages: 926-32

    • DOI

      10.1097/SLA.0000000000000881

    • Peer Reviewed
  • [Journal Article] Prognostic Significance of the Lymph Node Ratio in Stage IV Colorectal Cancer Patients who have Undergone Curative Resection.2015

    • Author(s)
      Ozawa T, Ishihara S, Nishikawa T, Tanaka T, Tanaka J, Kiyomatsu T, Hata K, Kawai K, Nozawa H, Kanazawa T, Kazama S, Yamaguchi H, Sunami E, Kitayama J, Watanabe T.
    • Journal Title

      Ann Surg Oncol

      Volume: 22 Pages: 1513-9

    • DOI

      10.1245/s10434-014-4184-6

    • Peer Reviewed
  • [Journal Article] Detection of carcinoembryonic antigen mRNA in peritoneal lavage by the transcription-reverse transcription concerted method indicates poor prognosis in patients with stage II and III colon cancer.2015

    • Author(s)
      Murono K, Kazama S, Yamaguchi H, Kawai K, Ishihara S, Sunami E, Kitayama J, Satoh Y, Kurihara M, Yatomi Y, Watanabe T.
    • Journal Title

      Surgery

      Volume: 157 Pages: 322-30

    • DOI

      10.1016/j.surg.2014.09.015

    • Peer Reviewed
  • [Journal Article] Characteristics and prognosis of colorectal cancer associated with rheumatic disease.2015

    • Author(s)
      Kishikawa J, Kawai K, Tsuno N, Yamaguchi H, Ishihara S, Sunami E, Watanabe T.
    • Journal Title

      Int Surg

      Volume: [Epub ahead of print Pages: Epub

    • Peer Reviewed
  • [Journal Article] Incidence and prognostic significance of positive peritoneal lavage in colorectal cancer.2015

    • Author(s)
      Nishikawa T, Sunami E, Tanaka T, Tanaka J, Kiyomatsu T, Kawai K, Hata K, Kazama S, Nozawa H, Ishihara S, Watanabe T.
    • Journal Title

      Surg Today

      Volume: Epub ahead of print Pages: Epub

    • Peer Reviewed
  • [Journal Article] Proximal shift of colorectal cancer along with aging.2014

    • Author(s)
      Iida Y, Kawai K, Tsuno NH, Ishihara S, Yamaguchi H, Sunami E, Kitayama J, Watanabe T.
    • Journal Title

      Clin Colorectal Cancer

      Volume: 13 Pages: 213-8

    • DOI

      10.1016/j.clcc.2014.06.005

    • Peer Reviewed
  • [Journal Article] Prognostic impact of primary tumor resection and lymph node dissection in stage IV colorectal cancer with unresectable metastasis: a propensity score analysis in a multicenter retrospective study.2014

    • Author(s)
      Ishihara S, Hayama T, Yamada H, Nozawa K, Matsuda K, Miyata H, Yoneyama S, Tanaka T, Tanaka J, Kiyomatsu T, Kawai K, Nozawa H, Kanazawa T, Kazama S, Yamaguchi H, Sunami E, Kitayama J, Hashiguchi Y, Sugihara K, Watanabe T.
    • Journal Title

      Ann Surg Oncol

      Volume: 21 Pages: 2949-55

    • DOI

      10.1245/s10434-014-3719-1

    • Peer Reviewed
  • [Journal Article] Nuclear Notch3 expression is associated with tumor recurrence in patients with stage II and III colorectal cancer.2014

    • Author(s)
      Ozawa T, Kazama S, Akiyoshi T, Murono K, Yoneyama S, Tanaka T, Tanaka J, Kiyomatsu T, Kawai K, Nozawa H, Kanazawa T, Yamaguchi H, Ishihara S, Sunami E, Kitayama J, Morikawa T, Fukayama M, Watanabe T.
    • Journal Title

      Ann Surg Oncol

      Volume: 21 Pages: 2650-8

    • DOI

      10.1245/s10434-014-3659-9

    • Peer Reviewed
  • [Journal Article] Drug development for intraperitoneal chemotherapy against peritoneal carcinomatosis from gastrointestinal cancer.2014

    • Author(s)
      Emoto S, Sunami E, Yamaguchi H, Ishihara S, Kitayama J, Watanabe T.
    • Journal Title

      Surg Today

      Volume: 44 Pages: 2209-20

    • DOI

      10.1007/s00595-014-0848-x

    • Peer Reviewed
  • [Journal Article] Changes in the plasma levels of cytokines/chemokines for predicting the response to chemoradiation therapy in rectal cancer patients.2014

    • Author(s)
      Tada N, Tsuno NH, Kawai K, Murono K, Nirei T, Ishihara S, Sunami E, Kitayama J, Watanabe T.
    • Journal Title

      Oncol Rep

      Volume: 31 Pages: 463-71

    • DOI

      10.3892/or.2013.2857

    • Peer Reviewed
  • [Presentation] 大腸癌患者におけるLINE-1を標的とした血漿遊離DNAメチル化レベルの定量と臨床的有用性の検討2015

    • Author(s)
      永井雄三、須並英二
    • Organizer
      第70回日本消化器外科学会
    • Place of Presentation
      浜松
    • Year and Date
      2015-07-15 – 2015-07-17

URL: 

Published: 2016-06-01  

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