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核小体を起点としp53を制御する新規分子による細胞増殖制御機構

Publicly Offered Research

Project AreaCell Proliferation Control
Project/Area Number 22019027
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

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

Principal Investigator

鈴木 聡  九州大学, 生体防御医学研究所, 教授 (10311565)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 2011: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2010: ¥3,000,000 (Direct Cost: ¥3,000,000)
KeywordsPICT1 / p53 / 核小体
Research Abstract

p53遺伝子を活性化する「核小体ストレス」の分子機構についてはいまだ多くが不明であった。一方、19q13にLOHをもつ腫瘍は、予後が圧倒的にいいことがわかっているものの、この責任遺伝子座は未だ同定されていなかった。
我々は、19q13にあり核小体に発現する遺伝子PICT1(GLTSCR2)がリボソーム蛋白質L11(RPL11)と結合して、RPL11を核小体につなぎとめていること、PICT1欠損によってRPL11が核小体から移動し、核質に豊富に存在するMDM2と結合して、そのユビキチンリガーゼ活性を顕著に抑制し、これによってp53が顕著に活性化すること、PICTIはES細胞の維持や個体発生に必須であり、PICT1による細胞周期停止や細胞死亢進はp53依存性であること、またPICT1発現の低下した食道がん、大腸がんでは予後が圧倒的に良いことを解明した。さらに核小体ストレスを引き起こす薬剤(アクチノマイシンD、5FU、ミコフェノール酸)はPICT1の発現を顕著に、また速やかに低下させることも見出した。
このように我々は、核小体ストレスによるp53上昇機構の一端を解明するとともに、がんの予後にも関わる遺伝子PICT1を見出し、Nature Medicineに報告した。本研究は、今後のPICT1の発現調節機能やRPL11とPICT1との結合阻害剤がp53を標的とする抗腫瘍薬になり得るものであること、またPICT1の発現程度の検討が癌患者の予後マーカーとして有用であることから、多くの新聞やニュースで広く報道された。

Report

(2 results)
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (28 results)

All 2011 2010 Other

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (14 results) Book (1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Journal Article] PPAR_Y contributes to PKM2 and HK2 expression in fatty liver2011

    • Author(s)
      Panasyuk G, et al
    • Journal Title

      Nat Commun.

      Volume: 3 Pages: 672-672

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Regulation of the MDM2-P53 pathway and tumor growth by PICT1 via nucleolar RPL112011

    • Author(s)
      Sasaki M, et al
    • Journal Title

      Nat Med

      Volume: 17 Pages: 944-951

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mutual contribution of Pten and estrogen to endometrial carc inogenesis in a PtenloxP/loxP mouse model2011

    • Author(s)
      Saito F, et al
    • Journal Title

      Int J Gyne Cancer

      Volume: 21 Pages: 1343-1349

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sox9 sustains chondrocyte survival and hypertrophy in part through Pik3ca-Akt pathway2011

    • Author(s)
      Ikegami D, et al
    • Journal Title

      Development

      Volume: 138 Pages: 1507-1519

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] HPK1 competes with ADAP for SLP-76 binding and via Rap1 negatively affects T-cell adhesion.2010

    • Author(s)
      Patzak IM, et al
    • Journal Title

      Eur J Immunol.

      Volume: 40 Pages: 3220-5

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deletion of Pten in pancreatic ss-cells protects against deficient ss-cell mass and function in mouse models of type 2 diabetes.2010

    • Author(s)
      Wang L, et al
    • Journal Title

      Diabetes

      Volume: 59 Pages: 3117-26

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of phosphatase and tensin homolog in the development of the mammalian auditory system.2010

    • Author(s)
      Dong Y, et al
    • Journal Title

      Neuroreport

      Volume: 21 Pages: 731-5

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The PtdIns(3,4)P(2) phosphatase INPP4A is a suppressor of excitotoxic neuronal death.2010

    • Author(s)
      Sasaki J, et al
    • Journal Title

      Nature

      Volume: 465 Pages: 497-501

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nod-like receptor signaling enhances dendritic cell-mediated cross-priming in vivo.2010

    • Author(s)
      Asano, et al
    • Journal Title

      J.Immunol.

      Volume: 184 Pages: 736-45

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hematopoietic progenitor kinase 1 is a critical component of prostaglandin E2-mediated suppression of the anti-tumor immune response.2010

    • Author(s)
      Alzabin S, et al
    • Journal Title

      Cancer Immunol.Immunother.

      Volume: 59 Pages: 419-29

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phosphatase and tensin homolog deleted on chromosome 10 regulates sensory cell proliferation and differentiation of hair bundles in the mammalian cochlea.2010

    • Author(s)
      Dong Y
    • Journal Title

      Neuroscience

      Volume: 170 Pages: 1304-13

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] 核小体を起点とする新規p53経路制御因子PICT1とその異常による腫瘍制御2011

    • Author(s)
      河原康一, ら
    • Organizer
      第70回日本癌学会学術集会
    • Place of Presentation
      名古屋
    • Year and Date
      2011-10-30
    • Related Report
      2011 Annual Research Report
  • [Presentation] HOTAIRは大腸癌においてPRC2を再標的し、予後不良に関わる新規long ncRNAである2011

    • Author(s)
      古後龍之介, ら
    • Organizer
      第70回日本癌学会学術集会
    • Place of Presentation
      名古屋
    • Year and Date
      2011-10-03
    • Related Report
      2011 Annual Research Report
  • [Presentation] 癌抑制遺伝子Mob1の機能解析2011

    • Author(s)
      西尾美希, ら
    • Organizer
      第84回日本生化学会大会
    • Place of Presentation
      京都
    • Year and Date
      2011-09-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] PICT1/GLTSCR2 is a Critical Nucleolar Binding Partner of RPL11 that Regulates the MDM2-p53 Pathway and Tumor Growth2011

    • Author(s)
      Kawahara K, et al
    • Organizer
      AACR Frontiers in Basic Cancer Research meeting
    • Place of Presentation
      San Francisco、USA(招待講演)
    • Year and Date
      2011-09-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] A phosphoinositide species critical for polarized epithelial cells in vivo2010

    • Author(s)
      佐々木雄彦
    • Organizer
      BMB2010学術集会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] Idetification of a novel gene PICT1/GLTSCR2 which regulates MDM2-p53 pathway and tumor growth2010

    • Author(s)
      河原康一
    • Organizer
      BMB学術集会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] The lipid phosphatase INPP4A prevents striatal neurons from excitotoxic death2010

    • Author(s)
      佐々木純子
    • Organizer
      BMB2010学術集会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-08
    • Related Report
      2010 Annual Research Report
  • [Presentation] PTEN regulates the proliferation and differentiation of the mammalian cochlea hair cells2010

    • Author(s)
      Dong, R, et al
    • Organizer
      BMB学術集会
    • Place of Presentation
      神戸
    • Year and Date
      2010-12-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] PI3Kgamma governs the onset of T cell lymphomas by PTEN deficiency2010

    • Author(s)
      伊東文祥, ら
    • Organizer
      日本血液学会学術集会
    • Place of Presentation
      横浜
    • Year and Date
      2010-09-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] The role of the tumor suppressor gene MATS1(Mob1) in the Hippo signaling pathway2010

    • Author(s)
      西尾美希, et al
    • Organizer
      日本癌学会学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] Idetification of a novel gene PICT1/GLTSCR2 which regulates MDM2-p53 pathway and tumor growth2010

    • Author(s)
      河原康一, ら
    • Organizer
      日本癌学会学術集会
    • Place of Presentation
      大阪
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] 遺伝子改変動物の作製によるがん関連遺伝子の機構解析研究2010

    • Author(s)
      鈴木聡
    • Organizer
      日本小児科学会地方会
    • Place of Presentation
      秋田
    • Year and Date
      2010-07-31
    • Related Report
      2010 Annual Research Report
  • [Presentation] PICT1 is a Critical Nucleolar Latch of RPL11 to Regulate MDM2/HDM2-p53 Pathway.2010

    • Author(s)
      Nishio M, et al
    • Organizer
      JSH & ESJ joint international symposium
    • Place of Presentation
      Akita
    • Year and Date
      2010-07-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Mats欠損による個体発生と腫瘍発症制御Matsによる個体発生と腫瘍発症の制御2010

    • Author(s)
      鈴木聡
    • Organizer
      日本細胞生物学会
    • Place of Presentation
      大阪
    • Year and Date
      2010-05-20
    • Related Report
      2010 Annual Research Report
  • [Book] 生物学辞典2010

    • Author(s)
      石川統, ら
    • Total Pages
      1615
    • Publisher
      東京化学同人
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.bioreg.kyushu-u.ac.jp/hassei/Rsesarch.html

    • Related Report
      2011 Annual Research Report
  • [Patent(Industrial Property Rights)] 米国プロビジョナル出願61/368,8802010

    • Inventor(s)
      鈴木聡, 他5名
    • Industrial Property Rights Holder
      鈴木聡, 他5名
    • Filing Date
      2010-07-29
    • Related Report
      2010 Annual Research Report
    • Overseas

URL: 

Published: 2010-08-23   Modified: 2018-03-28  

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