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2007 Fiscal Year Annual Research Report

miRNAをターゲットとした消化器癌に対する新たな治療戦略の開発

Research Project

Project/Area Number 19390338
Research InstitutionKumamoto University

Principal Investigator

馬場 秀夫  Kumamoto University, 大学院・酵薬学研究部, 教授 (20240905)

Co-Investigator(Kenkyū-buntansha) 廣田 昌彦  熊本大学, 大学院・医学薬学研究部, 准教授 (80284769)
蒲原 英伸  熊本大学, 医学部附属病院, 助手 (90398222)
荒川 博文  国立がんセンター, 生物物理部, 部長 (70313088)
Keywords実験外科学 / 消化器癌 / 分子生物学 / microRNA
Research Abstract

我々は消化管癌(食道,胃,大腸)の切除検体を癌部・非癌部に分け、MELTによりmiRNAを豊富に含むmRNAの精製を行い、組織バンクとして保存を行っている。このRNAを用いて幾つかのmiRNAをターゲットにTaqMan法によるreal time RT-PCRを施行した。その中で、miR-21の発現は食道癌、胃癌、大腸癌組織で正常より増強していることが分かった。特に食道癌では25の検体について検討するとmiR-21の発現は正常より約3.5倍の発現量を呈し、腫瘍径との有意な相関性を認めた(p<0.05)。次にendogenous miR-21の発現量が異なる3種の食道癌細胞株(high、middle、low)を用いて、2'-0-methy1化処理のAnti-miR-21を細胞内へtransfectionを行いmiR-21の発現を抑制させ、細胞増殖への影響をMTS assayにて検討した。miR-21の発現の抑制程度に比して、細胞増殖が抑制された。 以上より、miR-21は細胞増殖に関連する遺伝子を制御していることが推察された。最近の報告で、miR-21のターゲット遺伝子としてPTEN(PI3K pathwayの制御),programmed cell death 4(tumor suppressor gene),tropomyosin 1(tumor suppressor gene)が関与していることが報告されており、現在、数種の新たなターゲット候補遺伝子の3'UTRをplasmidに組み込みLuciferase assayにより検証中である。切除検体には白血球や間質細胞の混入があるため、癌が本当にmiR-21を発現しているか検証するため、In-situ hybridizationを行った。癌で特異的にmiR21の発現が増強していることを組織上で確認した。miR-21は癌の発生・進展に広く関与している可能生があると思われる。

  • Research Products

    (28 results)

All 2008 2007

All Journal Article (25 results) (of which Peer Reviewed: 25 results) Presentation (3 results)

  • [Journal Article] Laminin-332 promotes the invasion of oesophageal squamous cell carcinoma via the PI3K activation.2008

    • Author(s)
      Baba Y
    • Journal Title

      Br J Cancer 98

      Pages: 974-980

    • Peer Reviewed
  • [Journal Article] Percutaneous transfistulous pancreatic duct drainage and interventional pancreatojejunostomy as a treatment option for intractable pancreatic fistula2008

    • Author(s)
      Hirota M
    • Journal Title

      Am J Surg (印刷中)

    • Peer Reviewed
  • [Journal Article] Risc factors of complications after partial splenic embolization for liver cirrhosis2008

    • Author(s)
      Hayashi H
    • Journal Title

      Br J Surg (印刷中)

    • Peer Reviewed
  • [Journal Article] Platelet count a a sensitive and convenient parameter for assessing the prognosis in acute pancreatitis2008

    • Author(s)
      Fujimura Y
    • Journal Title

      Pancreas (印刷中)

    • Peer Reviewed
  • [Journal Article] Intrahepatic dissemination of hepatocellular carcinoma after local ablation therapy2008

    • Author(s)
      Masuda T
    • Journal Title

      HBP Surg (印刷中)

    • Peer Reviewed
  • [Journal Article] Involvement of autophagy in cerulein-induced pancreatitis through trypsin ogen activation2008

    • Author(s)
      Hashimoto D
    • Journal Title

      J Cell Biol (印刷中)

    • Peer Reviewed
  • [Journal Article]2008

    • Author(s)
      Ishiko T
    • Journal Title

      Surg Laparo Endo Per (印刷中)

    • Peer Reviewed
  • [Journal Article] Estimation of Physiologic Ability and Surgical Stress (E-PASS) in patients with esophageal squamous cell carcinoma undergoing resection2008

    • Author(s)
      Baba Y
    • Journal Title

      Esophagus (印刷中)

    • Peer Reviewed
  • [Journal Article] The detection of tumor cells in the peritoneal cavity with early gastric cancer2008

    • Author(s)
      Yamamoto M
    • Journal Title

      Surg Today (印刷中)

    • Peer Reviewed
  • [Journal Article] C/EBP homologous protein is crucial for the acceleration of experimental pancreatltis2008

    • Author(s)
      Suyama K
    • Journal Title

      BBRC 367

      Pages: 176-182

    • Peer Reviewed
  • [Journal Article] The Postoperative Recurrence and the Occurrence of Second Primary Carcinomas in Patients With Early Gastric Carcinoma2008

    • Author(s)
      Yamamoto M
    • Journal Title

      J Surg Oncol 97

      Pages: 231-235

    • Peer Reviewed
  • [Journal Article] HLA-A2 and -A24-restricted glypican-3-derived peptide vaccine induces specific CTLs Preclinical study using mice2008

    • Author(s)
      Motomura Y
    • Journal Title

      Int J Oncol (印刷中)

    • Peer Reviewed
  • [Journal Article] Induction of inlerleukin-8(CXCL-8) by tumor necrosis factor-α and lenkemia inhibitory factor in pancreas carcinoma cells; Impact of CXCL-8 as an autocrine growth factor.2007

    • Author(s)
      Kamohara H
    • Journal Title

      Iint J Oncol 31

      Pages: 627-632

    • Peer Reviewed
  • [Journal Article] Differential expression of basement menbrane type IV collagen α chains in gastric intramucosal neoplastic lesions2007

    • Author(s)
      Baba Y
    • Journal Title

      J Gastroenterol 42

      Pages: 874-880

    • Peer Reviewed
  • [Journal Article]2007

    • Author(s)
      Sakamoto Y
    • Journal Title

      J Biol Chem 282

      Pages: 16391-1400

    • Peer Reviewed
  • [Journal Article] Leukemia inhibitory factor functions as a growth factor in pancreas carcinoma cells; Involvement of regulation of LIF and its receptor expression.2007

    • Author(s)
      Kamohara H
    • Journal Title

      Int J Oncol 30

      Pages: 977-983

    • Peer Reviewed
  • [Journal Article] Indication of EMR/ESD for early gastric cancer:relation between hitological type,depth of wall invasion and lymph node metastasis2007

    • Author(s)
      Ishihawa S
    • Journal Title

      Gastric Cancer 10

      Pages: 35-38

    • Peer Reviewed
  • [Journal Article] The expression of type IV collagen α6 chain is related to the prognosis in patients with esophageal squamous cell carcinoma2007

    • Author(s)
      Baba Y
    • Journal Title

      Ann Surg Oncol 152

      Pages: 555-565

    • Peer Reviewed
  • [Journal Article] Prognostic siginificance of angiogenesis in gastrointestinal stromal tumor2007

    • Author(s)
      Imamura M
    • Journal Title

      Modern Pathol 20

      Pages: 529-537

    • Peer Reviewed
  • [Journal Article] Novel Treatment of Intractable Rectal Strictures Associated With Anasto motic Leakage Using a Stenosis-Cutting Devise2007

    • Author(s)
      Shimada S
    • Journal Title

      Int Surg 92

      Pages: 82-88

    • Peer Reviewed
  • [Journal Article] Peritoneal lavage CEA/CA125 is a prognositc factor for gastric cancer patiens2007

    • Author(s)
      Yainamoto M
    • Journal Title

      J Cancer Res Clin Oncol 133

      Pages: 471-476

    • Peer Reviewed
  • [Journal Article] Local pancreatic resection with preoperative endoscopic transpapillary stenting2007

    • Author(s)
      Hirota M
    • Journal Title

      Am J Surg 194

      Pages: 308-10

    • Peer Reviewed
  • [Journal Article] Curcumin(1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione) blocks the chemotaxis of neutrophils by inhiciting signal transduction through IL-8 receptors2007

    • Author(s)
      Takahashi M
    • Journal Title

      Mediat Inflamm

      Pages: 10767

    • Peer Reviewed
  • [Journal Article] Efficacy of Radiotherapy for PV and IVC tumor thrombosis in unresectable HCC2007

    • Author(s)
      Sugiyama S
    • Journal Title

      Hepato-gastroenterol 54

      Pages: 1779-82

    • Peer Reviewed
  • [Journal Article] Predictive factors for platelet increase after partial splenic embolization in liver cirrhosis patients2007

    • Author(s)
      Hayashi H
    • Journal Title

      J Gastroenterol Hepatol 22

      Pages: 1638-42

    • Peer Reviewed
  • [Presentation] Suppression of DDR1 contributes to cancer progression in mammary carcinoma cells2007

    • Author(s)
      Kamohara Hidenobu
    • Organizer
      AACR-NCI-EORTEC International Conference
    • Place of Presentation
      Moscone West Convention Center
    • Year and Date
      2007-10-23
  • [Presentation] 食道癌根治的化学放射線療法後のサルベージ手術の意義-根治照射と補助的照射における病理学的比較検討2007

    • Author(s)
      宮成 信友
    • Organizer
      第107回日本外科学会定期学術集会
    • Place of Presentation
      大阪国際会議場
    • Year and Date
      2007-04-13
  • [Presentation] 食道扁平上皮癌におけるIVコラーゲンの発現と予後との関連2007

    • Author(s)
      馬場 祥史
    • Organizer
      第107回日本外科学会定期学術集会
    • Place of Presentation
      大阪国際会議場
    • Year and Date
      2007-04-11

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Published: 2010-02-04   Modified: 2016-04-21  

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