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B型肝炎ウイルスX蛋白の転写修飾機能と細胞形質転換能促進

Research Project

Project/Area Number 18012018
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionKanazawa University

Principal Investigator

村上 清史  Kanazawa University, 金沢大学, 名誉教授 (90019878)

Co-Investigator(Kenkyū-buntansha) 中本 安成  金沢大学, 医学部附属病院, 講師 (40293352)
小泉 恵太  金沢大学, 学際科学実験センター, 准教授 (70377406)
鈴木 健之  金沢大学, がん研究所, 教授 (30262075)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥11,400,000 (Direct Cost: ¥11,400,000)
Fiscal Year 2007: ¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 2006: ¥5,600,000 (Direct Cost: ¥5,600,000)
Keywords癌化 / ウイルス / 蛋白質 / 発生・分化 / シグナル伝達 / HBV / 転写修飾 / ヒト初代細胞 / 癌 / ウィルス
Research Abstract

B型肝炎ウイルスX蛋白(HB_x)の生物の機能を解明するため、HB_xが活性化型H-Ras導入による不死化ヒト初代細胞のoncogene-induced senescence (OIS)に拮抗して細胞を形質転換する能力の解析(村上、中本)と、HB_xに拮抗する宿主因子RMPの生物的機能をfly系で解析(小泉)を進めると共に、レトロウイルス挿入ライブラリーによるマウスのがん化の標的部位の探索(鈴木)を行った。得られた主な結果は、1)不死化ヒト正常線維芽(BJ)細胞系でのHB_xのOIS克服能は、HB_xがp53経路とpRb経路を抑制する結果と示唆された。HB_x形質転換促進能には、aa74-94とaa111-131の2配列が必須であり、aal-49が付加的な役割を示した。ジーンチップ解析では、HB_xと活性型Rasが共発現した不死化BJ細胞で、不死化BJ細胞に比較し、アポトーシス関連因子やMAPキナーゼシグナル伝達経路など細胞周期と細胞増殖に関与する因子と、SPCなど癌遺伝子関連因子の発現亢進が認められた。2)hTERT導入不死化ヒト初代肝細胞株(TTNT-16)を用いた解析でも、HB_xは活性化型H-RasによるOISを克服能を示し、細胞の形質転換を促進した。3)ショウジョウバエでfRMPとRPB5との関係を解明するため、RPB5 RNAiトランスジェニック(15系統)を作成した。GAL4誘導下でfRMPとRPB5 RNAiが眼成虫原基全体で発現する系で、fRMPとRPB5トランスジェニックRNAiの両方で、通常より小さなサイズの複眼形成が観察され、BrdU標識実験で視神経産生幹細胞の減少が観察された。しかし視神経分化には顕著な異常が観察されなかった。両遺伝子のRNAiが類似の表現型を示す結果は、両者の機能的な相関を示唆した。分化後の視神経でGMR GAL4による両者のRNAi誘導は、共に複眼形成に顕著な異常を惹起しなかった。fRMPとRPB5の発現が、神経幹細胞増殖時に重要な役割を果たすが、神経分化時には必ずしも重要ではないことを示唆するこれらの結果は、RNA polymerases量の減少或いは未集合RPB5の持つ未知機能によるものと推定される。

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (25 results)

All 2008 2007 2006

All Journal Article (17 results) (of which Peer Reviewed: 9 results) Presentation (8 results)

  • [Journal Article] Hepatitis B Virus X protein overcomes oncogenic RAS-induced senescence in human immortalized cells.2007

    • Author(s)
      Oishi N, Shilagardi K, Nakamoto Y, Honda M, Kaneko S, Murakami S.
    • Journal Title

      Cancer Science 98(10):

      Pages: 1540-1548

    • NAID

      10019997274

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Functional interaction of Hepatitis C Virus (HCV) NS5B with Nucleolin GAR domain.2007

    • Author(s)
      Mizuno H, Shilagardi K, Seki T, Hirota Y, Kaneko S, *Murakamki S.
    • Journal Title

      J. Biochem (Tokyo). 98(5)

      Pages: 641-652

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Human telomerase exists in two distinct active complexes in vivo.2007

    • Author(s)
      Kusakawa T, Shimakami T, Kaneko S, Yoshioka K, *Murakamki S.
    • Journal Title

      J. Biochem (Tokyo). 98(10)

      Pages: 917-927

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mutations in Ran system affected telomere silencing in Saccharomyces cerevisiae2007

    • Author(s)
      Hayashi N, Kobayashi M, Shimizu H Yamamoto K, Murakamki S, Nishimoto T.
    • Journal Title

      Biochem Biophys Res Commun. 363(3)

      Pages: 788-794

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NK cell-mediated antitumor effects of suicide gene therapy combined with monocyte chemoattractant protein-1 against hepatocellular carcinoma.2007

    • Author(s)
      Tsuchiyama T, Nakamoto Y, Kaneko S, et. al.
    • Journal Title

      J. Immunol. 178

      Pages: 574-583

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Combined therapy of transcatheter hepatic arterial embolization with intratumoral dendritic cell infusion for hepatocellular carcinoma: clinical safety.2007

    • Author(s)
      Nakamoto Y, Mizukoshi E, *Kaneko S, et. al.
    • Journal Title

      Clin. Exp. Immunol. 251

      Pages: 36-42

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of hepatitis C virus-specific CD8+ T-cells with HLA-A*24 tetramers during phlebotomy and interferon therapy for chronic hepatitis C.2007

    • Author(s)
      Kaji K, Nakamoto Y, *Kaneko S
    • Journal Title

      Oncol. Rep. 18

      Pages: 993-998

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] RNA interference screen to identify genes required for Drosophila embryonic nervous system development.2007

    • Author(s)
      Koizumi K, Higashida H, Nirenberg M., et. al.
    • Journal Title

      Proc Natl Acad Sci U S A. 104(13)

      Pages: 5626-5631

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CD38 is critical for social behaviour by regulating oxytocin secretion.2007

    • Author(s)
      Jin D, Koizumi K, Higashida H, et. al.
    • Journal Title

      Nature 446(7131)

      Pages: 5626-5631

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature-sensitive defects of the GSP1gene, yeast Ran homologue, activate the Tel1-dependent pathway.2007

    • Author(s)
      Hayashi N, Murakami S(10名)
    • Journal Title

      Biochem Biophys Res Commun. 9(2)

      Pages: 330-336

    • NAID

      120000807889

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Identification of calreticulin as a marker for phagocytosis of apoptotic cells in Drosophila.2007

    • Author(s)
      Kuraishi T., Koizumi K.(10名)
    • Journal Title

      Experimental Cell Research 313・3

      Pages: 500-510

    • Related Report
      2006 Annual Research Report
  • [Journal Article] CD38 is critical for social behavior by regulating oxytocin secretion.2007

    • Author(s)
      Jin D, Koizumi K(31名)
    • Journal Title

      Nature 446・7131

      Pages: 41-45

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Effect of hepatitis C virus (HCV) NS5B-nucleolin interaction on HCV replication with HCV subgenomic replicon.2006

    • Author(s)
      Shimakami T, Murakami S(7名)
    • Journal Title

      J.Virology 80(7)

      Pages: 3332-3340

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Molecular functions and biological roles of hepatitis B virus x protein.2006

    • Author(s)
      Tang H, Murakami S(4名)
    • Journal Title

      Cancer Science 97(19)

      Pages: 977-983

    • NAID

      10019377608

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Analysis of intrahepatic lymphocyte subsets in a transgenic mouse model of immune-mediated hepatocarcinogenesis.2006

    • Author(s)
      Nakamoto Y, Kaneko S
    • Journal Title

      J.Exp.Clin.Cancer Res. 25・1

      Pages: 55-57

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Cytotoxic T cell responses to human telomerase reverse transcriptase in patients with hepatocellular carcinoma.2006

    • Author(s)
      Mizukoshi E, Nakamoto Y, et al.
    • Journal Title

      Hepatology 43・6

      Pages: 1284-1294

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Monocyte chemoattractant protein-1 gene delivery enhances antitumor effects of herpes simplex virus thymidine kinase/ganciclovir system in a model of colon cancer.2006

    • Author(s)
      Kagaya T, Nakamoto Y, et al.
    • Journal Title

      Cancer Gene Ther. 13・4

      Pages: 357-366

    • Related Report
      2006 Annual Research Report
  • [Presentation] Identification of novel cancer genes using retroviral insertional mutagenesis in mice.2008

    • Author(s)
      Suzuki T
    • Organizer
      The Joint Symposium of the 3rd International Symposium of Institutes Network and Hot Spring Harbor-Global COE Symposium
    • Place of Presentation
      Beppu
    • Year and Date
      2008-02-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] Biological functions of hepatitis B virus X protein2007

    • Author(s)
      Murakami S
    • Organizer
      Japan-Korea Joint Symposium on Recent Advance in Medical Science
    • Place of Presentation
      Chonbok Univ, Korea
    • Year and Date
      2007-11-15
    • Related Report
      2007 Annual Research Report
  • [Presentation] 慢性肝炎モデルにおける発癌ポテンシャルの変化と遺伝子発現プロファイル2007

    • Author(s)
      中本安成、金子周一
    • Organizer
      DDW-Japan2006/第10回日本肝臓学会大会
    • Place of Presentation
      札幌コンベンションセンター
    • Year and Date
      2007-10-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] High-throughput retroviral tagging for identification of the genes involved in mouse retrovirus induced lymphoma.2007

    • Author(s)
      Suzuki T and Ishimura A.
    • Organizer
      The Awaji International Forum on Infection and Immunity
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      2007-09-01
    • Related Report
      2007 Annual Research Report
  • [Presentation] 慢性肝炎モデルの発癌ポテンシャルを誘導する炎症性因子の機能的解析2007

    • Author(s)
      中本安成、松田 充、金子周一
    • Organizer
      第92回日本消化器病学会総会
    • Place of Presentation
      北九州小倉
    • Year and Date
      2007-05-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] テロメアサイレンシングにおける出芽酵母Ran系遺伝子群の機能2007

    • Author(s)
      林 直之、西本毅治、村上清史、山本健一
    • Organizer
      第30回日本生物学会年会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2007 Annual Research Report
  • [Presentation] Genome-wide in vivo RNAi screening of Drosophila: A new strategy to identify genes causing human developmental disorder.2007

    • Author(s)
      Koizumi K, Islam MS, Higashida H.
    • Organizer
      第17回アンチセンスシンポジウム
    • Place of Presentation
      石川県立音楽堂
    • Related Report
      2007 Annual Research Report
  • [Presentation] Genomewide RNAi screening of Drosophila genes: New approach to search for human developmental disease genes.2007

    • Author(s)
      Koizumi K, Islam MS, Higashida H.
    • Organizer
      第30回日本生物学会年会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2018-03-28  

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