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細胞周期調節因子のリン酸化状態と細胞内局在によるEGFR阻害剤の効果予測

Research Project

Project/Area Number 19890135
Research Category

Grant-in-Aid for Young Scientists (Start-up)

Allocation TypeSingle-year Grants
Research Field Cerebral neurosurgery
Research InstitutionHiroshima University

Principal Investigator

山崎 文之  Hiroshima University, 大学院・医歯薬学総合研究科, 助教 (60444692)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,876,000 (Direct Cost: ¥2,510,000、Indirect Cost: ¥366,000)
Fiscal Year 2008: ¥1,586,000 (Direct Cost: ¥1,220,000、Indirect Cost: ¥366,000)
Fiscal Year 2007: ¥1,290,000 (Direct Cost: ¥1,290,000)
KeywordsEGFR / MMAC1 / PTEN / AKT / PKB / erlotinib / glioblastoma / lapatinib / PEA-15 / mTOR / Erlotinib / survivin / VEGF
Research Abstract

Epidermal growth factor receptor (EGFR)を高発現したA-431細胞から作製したEGFR阻害剤のerlotinibに対する耐性株においてMMAC1/PTENのリン酸化状態について検討し、Akt/PKBの活性を低下させる抗がん剤のgemcitabineがリン酸化AKT/PKBを減少させてEGFR阻害剤への感受性を回復することを見出した(投稿中)。さらにAKT/PKBの下流のmTORをターゲットとしてラパマイシンを併用した場合にEGFR阻害剤への感受性が回復することを見出し、mTORの下流でのシグナルのリン酸化状態を検討中である。さらに下流のp27の細胞内局剤に着目し、悪性神経膠腫との予後の関係を明らかにした(Anticancer Res,2009)。さらにEGFR/HER2のdual inhibitorのlapatinibが、EGFRの活性と無関係にHER2の活性を抑制することを示した(Mol Cancer Ther2008)。また、アポトーシス阻害因子のIAP family memberの一つであるsurvivinの局在と機能や中心体の数に与える影響と染色体の不安定性について報告した(Br J Cancer,2008)。そして、PEA-15の癌抑制遺伝子としての役割を示した(Cancer Res,2009)。他にもやもや病における硬膜のVEGF発現について検討し報告した(Neurosurgical Rev)。臨床では、脳に対する放射線照射後の二次性腫瘍発生について検討を行い、高線量の放射線照射後に退形成星細胞種や膠芽腫が発生する一方で、低線量の放射線照射や高線量照射の辺縁部に乏突起系腫瘍が発生することを見出し報告した(J Neurooncol,2008)。また、glioblastomaにおける予後因子として術前のMR検査での拡散係数が重要であることを示した(Eur J Radio1,2009)。さらに、下垂体近傍発生腫瘍の診断について拡散係数の有用性を示した(Eur J Radiol,2009)。また、脳腫瘍におけるMR spectroscopyの有用性(脳神経外科ジャーナル,2009)とMR spectroscopic imagingの有用性(広島医学,2009)について示した。

Report

(2 results)
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (18 results)

All 2009 2008

All Journal Article (15 results) (of which Peer Reviewed: 15 results) Presentation (3 results)

  • [Journal Article] Single voxel proton MR spectroscopyによる腫瘍陸病変の診断2009

    • Author(s)
      山崎文之, 他
    • Journal Title

      脳神経外科ジャーナル (In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 磁気共鳴スペクトロスコピー-Chemical shift imagingの脳腫瘍への応用-2009

    • Author(s)
      山崎文之, 他
    • Journal Title

      広島医学 (In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Glioblastoma treated with postoperative radio-chemotherapy : Prognostic value of apparent diffusion coefficient at MR imaging.2009

    • Author(s)
      Yamasaki F, et al.
    • Journal Title

      European Journal of Radiology (In press)

    • NAID

      120002598768

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of PROPELLER diffusion weighted imaging and apparent diffusion coefficient in the diagnosis of sellar and parasellar lesions.2009

    • Author(s)
      Mahmoud OM, Yamasaki F, et al.
    • Journal Title

      European Journal of Radiology (In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The combination of low cytoplasmic and high nuclear expression of p27 predicts a better prognosis in high-grade astrocytoma.2009

    • Author(s)
      Hidaka T, Yamasaki F, et al.
    • Journal Title

      Anticancer Research 29

      Pages: 597-603

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Secondary anaplastic oligodendroglioma after cranial irradiation2009

    • Author(s)
      Doskaliyev A, Yamasaki F, et al.
    • Journal Title

      Cerebrovascular Disease 27

      Pages: 616-617

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PEA-15 induces autophagy in human ovarian cancer cells and is associated with prolonged overall survival.2009

    • Author(s)
      Bartholomeusz C, Yamasaki F, et al.
    • Journal Title

      Cancer Research 68

      Pages: 9302-9310

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quality of life of extremely long-time germinoma survivors mainly treated with radiotherapy.2008

    • Author(s)
      Sugiyama K, Yamasaki F, et al.
    • Journal Title

      Prog Neurol Surg. 23

      Pages: 130-139

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Secondary anaplastic oligodendroglioma after cranial irradiation2008

    • Author(s)
      Doskaliyev A, Yamasaki F, et al.
    • Journal Title

      Journal of Neuro-oncology 88

      Pages: 299-303

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Activity of lapatinib is independent of EGFR expression level in HER2-overexpressing breast cancer cells.2008

    • Author(s)
      Zhang D, Yamasaki F, et al.
    • Journal Title

      Molecular Cancer Therapeutics 7

      Pages: 1846-1850

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Familial occurrence of dysembryoplastic neuroepithelial tumor-like neoplasm of the septum pellucidum : case report.2008

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

      Neurosurgery 63

      Pages: 370-372

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Centrosome amplification induced by survivin suppression enhances both chromosome instability and radiosensitivity in glioma cells2008

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

      British Journal of Cancer 98

      Pages: 345-355

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expression of vascular endothelial growth factor in dura mater of patients with moyamoya disease.2008

    • Author(s)
      Sakamoto S, Yamasaki F
    • Journal Title

      Neurosurgical Review 31

      Pages: 77-81

    • Related Report
      2008 Annual Research Report 2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Secondary anaplastic oligodendroglioma after cranial irradiation2008

    • Author(s)
      Doskaliyev A, Yamasaki F, et. al.
    • Journal Title

      Journal of Neuro-oncology (In press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Centrosome amplification induced by survivin suppression enhances both chromosome instability and radiosensitivity in glioma cells2008

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

      British Journal of Cancer 98

      Pages: 345-355

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Glioblastoma Treated with Postoperative Radio-Chemotherapy : Prognostic Value of Apparent Diffusion Coefficient at MR Imaging.2008

    • Author(s)
      Yamasaki F
    • Organizer
      Annual meeting of American Society for Neuroradiology
    • Place of Presentation
      New Orleans, USA
    • Related Report
      2008 Annual Research Report
  • [Presentation] 術前血清NSEとCA19-9の上昇を認めた大脳PNETの-例2008

    • Author(s)
      Yamasaki F
    • Organizer
      第26回日本脳腫瘍病理学会
    • Place of Presentation
      Tokyo
    • Related Report
      2008 Annual Research Report
  • [Presentation] 膠芽腫のoverall survivalと拡散係数2008

    • Author(s)
      Yamasaki F
    • Organizer
      第31回日本脳神経CI学会
    • Place of Presentation
      Tokyo
    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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