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2009 Fiscal Year Annual Research Report

胃癌前癌病変であるテロメア短縮病変における遺伝子異常

Research Project

Project/Area Number 21590380
Research InstitutionNara Medical University

Principal Investigator

藤井 澄  Nara Medical University, 医学部, 博士研究員 (60284189)

Co-Investigator(Kenkyū-buntansha) 國安 弘基  奈良県立医科大学, 医学部, 教授 (00253055)
Keywordsテロメア / テロメラーゼ / クリプト / クリプト関連遺伝子 / ノーダル / ES細胞
Research Abstract

テロメア短縮病変は組織学的にはほとんどがdysplastic intestinal metaplasiaの像を示すことから、まず、腸上皮化生において変化を示す遺伝子を検討した。腸上皮化生で過剰発現する遺伝子としてcripto (CR-1, TDGF-1)を報告者はすでに報告しているが、この遺伝子のcDNAを用いてサザン法で遺伝子変化を検討すると2.2-2.4kbpのfragmentの欠失が癌周囲腸上皮化生粘膜と胃癌組織に認められる。一方、ホルマリン固定胃切除標本を全割し、ISHによりテロメア量を全粘膜について検討し検出されたテロメア短縮病変部からDNAを抽出しマイクロサテライト領域の変化を検討すると、2qに欠失が認められ、CR-1のpseudogeneであるTDGF-2の遺伝子座に近接する。そこで、TDGF-2に対するprimerを作成し同一症例のテロメア短縮病変、腸上皮化生粘膜、及び、癌部組織でTDGF-2遺伝子の変化を検討すると、テロメア短縮病変と癌部組織でTDGF-2遺伝子欠失が認められた。TDGF-2はfunctional pseudogeneとされRT-PCRでもTDGF-2特異的配列の発現が認められる。また、TDGF-1 (CR-1)はnodal (activin)と結合しES細胞のstemness維持に働くことが報告されている。報告者はTDGF-2のES細胞における意義について検討中である。

  • Research Products

    (18 results)

All 2010 2009 Other

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (6 results) Book (1 results)

  • [Journal Article] HMGB1 attenuates anti-metastatic defense of the lymph nodes in colorectal cancer2010

    • Author(s)
      Moriwaka Y, Fujii K, et al.
    • Journal Title

      Pathobiology 77

      Pages: 17-23

    • Peer Reviewed
  • [Journal Article] CD10 enhances metastasis of colorectal cancer by abrogating the antitumoral effect of methionine-enkephalin in the liver2010

    • Author(s)
      Kuniyasu H, Fujii K, et al.
    • Journal Title

      Gut 59

      Pages: 348-356

    • Peer Reviewed
  • [Journal Article] HMGB1 attenuates anti-metastatic defense of the liver in colorectal cancer2010

    • Author(s)
      Luo Y, Fujii K, et al
    • Journal Title

      European Journal of Cancer 46

      Pages: 791-799

    • Peer Reviewed
  • [Journal Article] Reg IV enhances peritoneal metastasis in gastric carcinomas2009

    • Author(s)
      Kuniyasu H, Fujii K, et al
    • Journal Title

      Cell Proliferation 42

      Pages: 100-121

    • Peer Reviewed
  • [Journal Article] Co-treatment with deoxycholic acid and azoxymethane accelerates the secretion of HMGB1 in IEC6 intestinal epithelial cells2009

    • Author(s)
      Fujii K, et al
    • Journal Title

      Cell Proliferation 42

      Pages: 497-502

    • Peer Reviewed
  • [Journal Article] Methionine-enkephalin secreted by human colorectal cancer cells suppresses T lymphocytes2009

    • Author(s)
      Ohmori H, Fujii K, et al
    • Journal Title

      Cancer Science 100

      Pages: 155-162

    • Peer Reviewed
  • [Journal Article] Antisense phosphorothioate oligodeoxynucleic acid for CD10 suppresses liver metastasis of colorectal cancer2009

    • Author(s)
      Luo Y, Fujii K, et al
    • Journal Title

      Pathobiology 76

      Pages: 267-273

    • Peer Reviewed
  • [Journal Article] Suppression of dendritic cells by HMGB1 is associated with lymph node metastasis of human colon cancer2009

    • Author(s)
      Kusume A, Fujii K, et al.
    • Journal Title

      Pathobiology 76

      Pages: 155-162

    • Peer Reviewed
  • [Journal Article] A 5-HT4-receptor activation-induced neural plasticity enhances in vivo reconstructs of enteric nerve circuit insult

    • Author(s)
      Matsuyoshi H, Kuniyasu H, et al
    • Journal Title

      Neurogastroenterology and Motility (in press)

    • Peer Reviewed
  • [Journal Article] Dietary linoleic acid and glucose enhances azoxymethane-induced colon cancer and the metastasis through the expression of high mobility group box 1

    • Author(s)
      Ohmori H, Fujii K, et al
    • Journal Title

      Pathobiology (in press)

    • Peer Reviewed
  • [Journal Article] MIA dependent angiogenesis and lymphangiogenesis are closely associated with progression, nodal metastasis and poor prognosis in tongue squamous cell carcinoma

    • Author(s)
      Sasahira T, Kuniyasu H, et al.
    • Journal Title

      European Journal of Cancer (in press)

    • Peer Reviewed
  • [Presentation] 脂肪酸の大腸癌転移に及ぼす影響2009

    • Author(s)
      羅変, 藤井澄, ら
    • Organizer
      第20回日本消化器癌発生学会、ミニシンポジウム
    • Place of Presentation
      広島
    • Year and Date
      20091126-20091127
  • [Presentation] 小腸粘膜に発現するCD10は粘膜免疫系の保持に関与する2009

    • Author(s)
      賀屋大介, 藤井澄, ら
    • Organizer
      第20回日本消化器癌発生学会、ミニシンポジウム
    • Place of Presentation
      広島
    • Year and Date
      20091126-20091127
  • [Presentation] Activation of angiotensin system enhances liver metastasis of human colorectal cancer2009

    • Author(s)
      Kuwai T, Kuniyasu H., et al
    • Organizer
      100th Annual Meeting of American Association for Cancer Research
    • Place of Presentation
      Denver, USA
    • Year and Date
      20090418-20090422
  • [Presentation] Angiotensin II expression is associated with liver metastasis of colorectal cancer2009

    • Author(s)
      Luo Y, Isobe M, Fujii K, Ohmori H, Kuniyasu H
    • Organizer
      19th International Symposium of Hiroshima Cancer Seminar
    • Place of Presentation
      Hiroshima
    • Year and Date
      2009-10-01
  • [Presentation] Methionine-enkephalin inhibits liver metastasis of colorectal cancers Methionine-enkephalin inhibits liver metastasis of colorectal cancers2009

    • Author(s)
      羅変, 藤井澄, et al
    • Organizer
      19th International Symposium of Hiroshima Cancer Seminar
    • Place of Presentation
      Hiroshima
    • Year and Date
      2009-10-01
  • [Presentation] A 5-HT4 receptor agonist, mosapride citrate, promotes regeneration of the reflex pathways in the enteric nervous system2009

    • Author(s)
      Matsuyoshi H, Kuniyasu H, et al.
    • Organizer
      Neurogastroenterology and Motility 2009 Joint International Meeting
    • Place of Presentation
      Chicago, USA
    • Year and Date
      2009-06-30
  • [Book] Recent advances in metastasis of gastrointestinal cancers2010

    • Author(s)
      Kuniyasu H
    • Total Pages
      214
    • Publisher
      Transworld Research Network, Kerala, India

URL: 

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

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