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P19胚性腫瘍細胞分化誘導のシグナル伝達路

Research Project

Project/Area Number 14028003
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

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

Principal Investigator

田村 眞理  東北大学, 加齢医学研究所, 教授 (20124604)

Co-Investigator(Kenkyū-buntansha) 小林 孝安  東北大学, 加齢医学研究所, 助手 (10221970)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥39,700,000 (Direct Cost: ¥39,700,000)
Fiscal Year 2004: ¥12,500,000 (Direct Cost: ¥12,500,000)
Fiscal Year 2003: ¥13,200,000 (Direct Cost: ¥13,200,000)
Fiscal Year 2002: ¥14,000,000 (Direct Cost: ¥14,000,000)
Keywords再生医療 / シグナル伝達路 / 再生・分化 / プロテオーム / マイクロアレイ / 多能性幹細胞 / 分化 / プロテインホスファターゼ / SAPKシグナル伝達路 / シグナル伝達
Research Abstract

1.我々はこれまで、P19細胞の神経分化の過程で、TAK1-MKK4-JNKシグナル伝達路の活性化が必須の役割を果たすこと及びPP2Cεが分化の抑制因子としての役割を担うことを報告してきた。今回、分化の過程で、TAK1の活性化因子のTAB1とTAB2が、それぞれ、細胞質及び細胞核においてTAK1の活性化を担うことを示唆する結果を得た。また、JNKの核外における機能を探索し、BMPRIIの細胞内のC末領域がASK1-MKK4/7-JNKと会合することを見出した。
2.神経分化過程において、セリン/スレオニン残基のリン酸化レベルが変動するタンパク質として同定されたyes associated protein (YAP)ついての解析を行った結果、分化誘導前はYAPのセリン残基がリン酸化されているが、分化誘導刺激により急速にリン酸化レベルが低下することが判明した。
3.我々がP19細胞の内胚葉分化に必須の役割を果たすシグナリング分子として同定したSKAP55Rが、分化誘導刺激後24時間以内にその作用を発揮すること及びSKAP55Rのチロシン残基のリン酸化が分化誘導に伴って亢進することを見出した。

Report

(3 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (13 results)

All 2004 Other

All Journal Article (2 results) Publications (11 results)

  • [Journal Article] Activation mechanism of c-Jun amino-terminal kinase in the course of neural differentiation of P19 embryonic carcinoma cells.2004

    • Author(s)
      Akiyama, S. et al.
    • Journal Title

      J Biol Chem. 279

      Pages: 36616-36620

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Protein phosphatase-2C alpha as a positive regulator of insulin sensitivity through direct activation of phosphatidylinositol 3-kinase2004

    • Author(s)
      Yoshizaki, T. et al.
    • Journal Title

      J Biol Chem. 279

      Pages: 22715-22726

    • Related Report
      2004 Annual Research Report
  • [Publications] Komaki, K. et al.: "Molecular cloning of PP2Cη, a novel member of the protein phosphatase 2C family."Biochim.Biophys.Acta. 1630. 134-137 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Li, MG.et al.: "Regulation of the interleukin-1-induced signaling pathways by a novel member of protein phosphatase 2C family(PP2Cε)"J.Biol.Chem.. 278. 12013-12021 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kobayashi, T. et al.: "Structural and functional characterization of mouse glutamate decarboxylase 67 gene promoter."Biochim.Biophys.Acta. 1628. 156-168 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kashiwaba, M. et al.: "A novel protein phosphatase 2C family member(PP2C) is abele to associate with ubiquitin conjugating enzymm-9"FEBS Lett.. 538. 197-202 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kudo, T. et al.: "Activation mechanism of c-Jun amino-terminal kinase in the course of endodermal differentiation of P 19 embryonic carcinoma cells."FEBS Lett.. 539. 29-33 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tamura, S. et al.: "TCG Protein Phosphatases. Arino, J., Alexander, D (eds)"Springer Verlag, Heiderberg. 378 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Tamura, S. et al.: "Regulation of stress-activated protein kinase signaling pathways by protein phosphatases."Eur. J. Biochem.. 269. 1060-1066 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Li, MG.et al.: "Regulation of the interleukin-1-induced signaling pathways by a novel member of protein phosphatase 2C family (PP2Cepsilon)"J. Biol. Chem.. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Kashiwaba, M. et al.: "A novel protein phosphatase 2C family member (PP2C) is abele to associate with ubiquitin conjugating enzym 9"FEBS Lett.. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Kudo, T. et al.: "Activation mechanism of c-Jun amino-terminal kinase in the course of endodermal differentiation of P19 embryonic carcinoma cells"FEBS Lett.. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Tamura, S. et al.: "TCG Protein Phosphatases. Arino, J., Alexander, D (eds) : Roles of mammalian protein phosphatase 2C family members in regulation of cellular functions"Springer Verlag, Heiderberg(印刷中).

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2018-03-28  

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