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Development of intracellular targeting peptide vectors and the real-time observation in cells.

Research Project

Project/Area Number 17390029
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Drug development chemistry
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

FUTAKI Shiroh  Kyoto Univ., Inst.for Chemical Res., Professor, 化学研究所, 教授 (50199402)

Co-Investigator(Kenkyū-buntansha) IMANISHI Miki  Kyoto Univ., Inst.for Chemical Res., Assistant Professor, 化学研究所, 助手 (80362391)
NAKASE Ikuhiko  Kyoto Univ., Inst.for Chemical Res., Assistant Professor, 化学研究所, 助手 (40432322)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥15,200,000 (Direct Cost: ¥15,200,000)
Fiscal Year 2006: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2005: ¥11,200,000 (Direct Cost: ¥11,200,000)
Keywordsarginine-rich peptide / intracellular delivery / peptide vector / endocytosis / nucleus / mitochondria
Research Abstract

Intracellular delivery using membrane-permeable peptide vectors is a recently developed methodology that has been employed successfully to transport various bioactive molecules into cells to modify cell functions. The purpose of this study is to observe internalized peptide vectors in real time using fluorescence microscopy and to analyze the effect of the attachment of intracellular targeting signals including those for nucleus and mitochondria to the peptide vectors on their cellular localization. Confocal microscopic observation of the cells revealed that most of the peptide vectors were taken up by the cells by endocytosis, but it was difficult to analyze the peptide vectors diffusing into cytosol due to the high accumulation of the peptides in cytosol. However, in culture medium without containing serum or in the presence of high concentration of the vectors, effective cytosolic diffusion of the peptide vectors was observed. Attachment of the SV40 nuclear localization signal peptide to the vectors successfully enhanced the accumulation of the conjugates into nucleus, but no significant effect was observed by the attachment of mitochondrial localization signals. We thus concluded that mitochondria localization signal peptides may be effective only for newly in-cell generated proteins but not for intracellularly delivered proteins. These findings should be useful for the intracellular targeting vectors.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (14 results)

All 2007 2006 2005

All Journal Article (14 results)

  • [Journal Article] Interaction of arginine-rich peptides with membrane-associated proteoglycans is crucial for induction of actin organization and macropinocytosis2007

    • Author(s)
      Nakase, I.
    • Journal Title

      Biochemistry 46(2)

      Pages: 492-501

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Temperature-, concentration- and cholesterol-dependent translocation of L- and D-octa-arginine across the plasma and nuclear membrane of CD34^+ leukaemia cells2007

    • Author(s)
      Fretz, M. M.
    • Journal Title

      Biochem. J. 403(2)

      Pages: 335-342

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Interaction of arginine-rich peptides with membrane-associated proteoglycans is crucial for induction of actin organization and macropinocytosis2007

    • Author(s)
      Nakase, I. et al.
    • Journal Title

      Biochemistry 46(2)

      Pages: 492-501

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Temperature-, concentration- and cholesterol-dependent translocation of L- and D-octa-arginine across the plasma and nuclear membrane of CD34^+ leukaemia cells2007

    • Author(s)
      Fretz, M.M.et al.
    • Journal Title

      Biochem.J. 403(2)

      Pages: 335-342

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Intracellular traffic and fate of protein transduction domains HIV-1 TAT peptide and octaarginine. Implications for their utilization as drug delivery vectors2006

    • Author(s)
      Al-Taei, S.
    • Journal Title

      Bioconjug. Chem. 17(1)

      Pages: 90-100

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Cellular uptake and subsequent intracellular trafficking of R8-liposomes introduced at low temperature2006

    • Author(s)
      Iwasa, A.
    • Journal Title

      Biochim. Biophys. Acta 1758(6)

      Pages: 713-720

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Effects of Na+/H+ exchanger inhibitors on subcellular localisation of endocytic organelles and intracellular dynamics of protein transduction domains HIV-TAT peptide and octaarginine2006

    • Author(s)
      Fretz, M.
    • Journal Title

      J. Control. Release 116(2)

      Pages: 247-254

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Intracellular traffic and fate of protein transduction domains HIV-1 TAT peptide and octaarginine. Implications for their utilization as drug delivery vectors2006

    • Author(s)
      Al-Taei, S. et al.
    • Journal Title

      Bioconjug.Chem. 17(1)

      Pages: 90-100

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Cellular uptake and subsequent intracellular trafficking of R8-liposomes introduced at low temperature2006

    • Author(s)
      Iwasa, A. et al.
    • Journal Title

      Biochim.Biophys.Acta

      Pages: 713-720

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of Na+/H+ exchanger inhibitors on subcellular localisation of endocytic organelles and intracellular dynamics of protein transduction domains HIV-TAT peptide and octaarginine2006

    • Author(s)
      Fretz, M. et al.
    • Journal Title

      J Control.Release 116(2)

      Pages: 247-254

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of the nuclear delivery and intra-nuclear transcription of plasmid dna condensed with μ (mu) and NLS-μ by cytoplasmic and nuclear microiniection : acomvarative study with poly-L-lysine2006

    • Author(s)
      Hidetaka Akita
    • Journal Title

      J.Gene Med. 8(2)

      Pages: 198-206

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Membrane-permeable arginine-rich peptides and the translocation mechanisms2005

    • Author(s)
      Futaki, S.
    • Journal Title

      Adv. Drug Deliv. Rev. 57(4)

      Pages: 547-558

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Membrane-permeable arginine-rich peptides and the translocation mechanisms2005

    • Author(s)
      Futaki, S.
    • Journal Title

      Adv.Drug Deliv.Rev. 57(4)

      Pages: 547-558

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Membrane-permeable arginine-rich peptides and the translocation mechanisms2005

    • Author(s)
      Shiroh Futaki
    • Journal Title

      Adv.Drug Deliv.Rev. 57(4)

      Pages: 547-558

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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