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Development and application of in cell folding technology based on reversible cationization of denatured proteins.

Research Project

Project/Area Number 17360399
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biofunction/Bioprocess
Research InstitutionOKYAMA UNIVERSITY

Principal Investigator

YAMADA Hidenori  OKYAMA UNIVERSITY, Graduate school of natural science and technology, professor, 大学院自然科学研究科, 教授 (80037613)

Co-Investigator(Kenkyū-buntansha) FUTAMI Junichiro  OKYAMA UNIVERSITY, Graduate school of natural science and technology, Lecturer, 大学院自然科学研究科, 講師 (00420498)
SENO Masaharu  OKYAMA UNIVERSITY, Graduate school of natural science and technology, professor, 大学院自然科学研究科, 教授 (90243493)
TADA Hiroko  OKYAMA UNIVERSITY, Graduate school of natural science and technology, Assistant, 大学院自然科学研究科, 助手 (60271061)
KOSAKA Megumi  Advanced Science Research Center, Assistant, 自然生命科学研究支援センター, 助手 (00170233)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥15,100,000 (Direct Cost: ¥15,100,000)
Fiscal Year 2006: ¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 2005: ¥7,700,000 (Direct Cost: ¥7,700,000)
KeywordsProtein / chemical modification / protein transduction / folding / protein purfication / cell culture / protein engineering / biotechnology
Research Abstract

This project aimed for the development of two methodologies; first is efficient solubilization of denatured proteins with reversible protein chemical cationization techniques, and second is intracellular delivery of reversibly cationized proteins followed by simultaneous folding to the active conformations, called in cell folding techniques. As a model protein, we investigated human tumor-suppressor p53. Bacterially expressed p53 protein as insoluble inclusion body was successfully solubilized by introduction of polyethylenimine 600 (PEI600, molecular weight: 600) via disulfide bond. The analysis of resulted PEI600-SS-p53 revealed that six cysteins were conjugated by PEI600, but remaining four cysteins failed in conjugation of PEI600, probably because of steric hindrance. This result indicated that reversible blocking of remaining free sulfidryl groups by a small molecule of aminopropyl methanethiosulfonate is important for preparation of chemically stable samples. The 'in cell folding' of p53 was successfully demonstrated by treatment of p53-null Saos-2 cells with reversibly cationized p53. PEI600-SS-p53 treated cells revealed that all events examined as indications of the activation of p53 in cells, such as reduction of disulfide bonds followed by tetramer formation, localization into the nucleus, induction of p53 target genes, and induction of apoptosis of cells, occurred. Cationic charge dependent protein transduction efficiency was seen on the comparison between APS-SS-p53 (net charge: +6) and PEI600-SS-p53 (net charge: +81.6) because more cationic PEI600-SS-p53 showed more efficient induction of p53 targeted gene expression. This project also revealed that most of denatured proteins possessing cysteine residues can be solubilized by introduction of excess cationic charges. Furthermore, protein transduction and induction of their biological functions in living cells by using in cell folding techniques were confirmed by using at least 6 kinds of proteins.

Report

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

    (11 results)

All 2007 2006 2005

All Journal Article (11 results)

  • [Journal Article] Exploiting protein cationization techniques in future drug development2007

    • Author(s)
      Junichiro Futami
    • Journal Title

      Expert Opinion on Drug Discovery 2

      Pages: 261-269

    • 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] Exploiting protein cationization in future drug development.2007

    • Author(s)
      Futami J., Kitazoe M., Murata H., Yamada H.
    • Journal Title

      Expert Opinion on Drug Discovery 2

      Pages: 261-269

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Denatured and reversibly cationized p53 readily enters cells and simultaneously folds to the functional protein in the cells2006

    • Author(s)
      Hitoshi Murata
    • Journal Title

      Biochemistry 45

      Pages: 6124-6132

    • 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] Denatured and reversibly cationized p53 readily enters cells and simultaneously folds to the functional protein in the cells.2006

    • Author(s)
      Murata H., Sakaguchi M., Futami J., Kitazoe M., Maeda T., Doura H., Kosaka M.Tada H., Seno M., Huh N.H., Yamada H.
    • Journal Title

      Biochemistry 45

      Pages: 6124-6132

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Targeted disruption of transcriptional regulatory function of p53 by a novel efficient method for, introducing a decoy oligonucleotide into nuclei.2005

    • Author(s)
      Masakiyo Sakaguchi
    • Journal Title

      Nucleic Acids Research 33

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Intracellular delivery of proteins into mammalian living cells by polyethylenimine-cationization.2005

    • Author(s)
      Junichiro Futami
    • Journal Title

      Journal of Bioscience and Bioengineering 99

      Pages: 95-103

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Protein transduction assisted by polyethylenimine-cationized carrier proteins2005

    • Author(s)
      Midori Kitazoe
    • Journal Title

      Journal of Biochemistry 137

      Pages: 693-701

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Targeted disruption of transcriptional regulatory function of p53 by a novel efficient method for introducing a decoy oligonucleotide into nuclei.2005

    • Author(s)
      Sakaguchi M., Nukui T., Sonegawa H., Murata H., Futami J., Yamada H., Huh N, H.
    • Journal Title

      Nucleic Acids Res. 33

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Protein transduction assisted by polyethylenimine-cationized carrier proteins.2005

    • Author(s)
      Kitazoe M., Murata H., Futami J., Maeda T., Sakaguchi M., Miyazaki M., Kosaka M., Tada H., Seno M., Huh N.H., Namba M., Nishikawa M., Maeda Y., Yamada H.
    • Journal Title

      J. Biochem. (Tokyo) 137

      Pages: 693-701

    • NAID

      10017345558

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Intracellular delivery of proteins into mammalian living cells by polyethylenimine-cationization.2005

    • Author(s)
      Futami J., Kitazoe M., Maeda T., Nukui E., Sakaguchi M., Kosaka J., Miyazaki M., Kosaka M., Tada H., Seno M., Sasaki J., Huh N.-H., Namba M., Yamada H.
    • Journal Title

      J. Biosci. Bioeng. 99

      Pages: 95-103

    • NAID

      110002695633

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Targeted disruption of transcriptional regulatory function of p53 by a novel efficient method for introducing a decoy oligonucleotide into nuclei.2005

    • Author(s)
      Masakiyo Sakaguchi
    • Journal Title

      Nucleic Acids Research 33

    • Related Report
      2005 Annual Research Report

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

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