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1999 Fiscal Year Final Research Report Summary

Establishment of Ryudocan Null Mouse and ELISA for Blood Levels of Ryudocan

Research Project

Project/Area Number 10557090
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Hematology
Research InstitutionNagoya University

Principal Investigator

KOJIMA Tetsuhito  Nagoya University, School of Medicine, Associate Professor, 医学部, 助教授 (40161913)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Koji  School of Medicine, Medical Staff, 医学部, 医員
KADOMATSU Kenji  School of Medicine, Associate Professor, 医学部, 助教授 (80204519)
Project Period (FY) 1998 – 1999
KeywordsHeparan sulfate proteoglycan / ryudocan (syndecan-4) / null mice / focal adhesion / fibronectin
Research Abstract

Focal adhesion formation on fibronectin requires two signals, i.e. one from the cell-binding domain of fibronectin and one from the heparin-binding domain. While the cell-binding domain is recognized by integrins, the cell surface molecules that recognize the heparin-binding domain have not been identified. Previous reports have demonstrated that ryudocan (syndecan-4), a heparan sulfate proteoglycan, is a component of focal adhesions and that anti-syndecan-4 antibody can promote focal adhesion formation. Thus, ryudocan is a candidate that recognizes the heparin-binding domain. To study the role of syndecan-4 in focal adhesion formation, we generated ryudocan null mice. Even in ryudocan (-/-) fibroblasts, focal adhesions were formed and actin fibers terminated normally at focal adhesions. However, neither the fibronectin heparin-binding fragment in a soluble form nor anti-ryudocan antibody promoted focal adhesion formation in ryudocan (-/-) fibroblasts cultured on the cell-binding fragment, promoted focal adhesion formation. Thus, the present study has revealed that the heparin-binding fragment in a soluble form requires ryudocan for focal adhesion formation, whereas one in a solid form could utilize not only ryudocan but also some unidentified cell surface molecules.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] T. Miyata, T. Kojima, K. Suzuki, et al.: "Factor X Nagoya 1 and 2 : A CRM-Factor X deficiency and A Dysfunctional CRM+ Factor X Deficiency Characterized by Substitution of Arg306 by Cys and Gly366 by Ser."Thromb. Haemost.. 79. 486-490 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Katsumi, T. Kojima, T. Yamazaki, et al.: "The Carboxyl-Terminal Region of Protein C is Essential for Its Secretion"Blood. 91. 3784-3791 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Mizuno, N. Emi, T. Kojima, et al.: "Successful Culture and Sustainability In Vivo of Gene modified Human Oral Mucosal Epithelium"Human Gene Therapy. 10. 825-830 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Ishiguro, T. Kojima, O. Taguchi, et al.: "Syndecan-4 expression is associated with follicular atresia in mouse ovary"Histochem. Cell Biol.. 112. 25-33 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Yamamoto, T. Shimokawa, T. Kojima, et al.: "Regulation of murine protein C gene expression in vivo : effect of tumor necrosis factor-α, inteleukin-1, and transforming growth factor-β"Thromb. Haemost.. 82. 1297-1301 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Ishiguro, K. Kadomatsu, T. Kojima, et al.: "Syndecan-4 Deficiency Impairs Focal Adhesion Formation Only under Restricted Conditions"J. Biol. Chem.. 275. 5249-5252 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小嶋哲人: "今日の治療指針14.血液・造血器疾患「特発性血小板減少性紫斑病」"医学書院. 2 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Miyata, T. Kojima, K. Suzuki, et al.: "Factor X Nagoya 1 and 2 : A CRM- Factor X deficiency and A Dysfunctional CRM+ Factor X Deficiency Characterized by Substitution of Arg306 by Cys and Gly366 by Ser."Thromb. Haemost.. 79. 486-490 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A. Katsumi, T. Kojima, T. Yamazaki, et al.: "The Carboxyl-Terminal Region of Protein C is Essential for Its Secretion"Blood. 91(10). 3784-3791 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A. Shimizu, I. Sugiura, T. Kojima, et al.: "Identification of the Five Hydrophilic Residues (Lys-217, Lys-218, Arg-359, His-360, and Arg-513) Essential for the Structure and Activity of Vitamin K-Dependent Carboxylase"Biochem. Biophys. Res. Commn.. 251. 22-26 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Mizuno, N. Emi, T. Kojima, et al.: "Successful Culture and Sustainability in Vivo of Gene modified Human Oral Mucosal Epithelium"Human Gene Therapy. 10. 825-830 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ishiguro, T. Kojima, O. Taguchi, et al.: "Syndecan-4 expression is associated with follicular atresia in mouse ovary"Histochem. Cell Biol.. 112(1). 25-33 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Yamamoto, T. Shimokawam, T. Kojima, et al.: "Regulation of murine protein C gene expression in vivo : effect of tumor necrosis factor-α, inteleukin-l, and transforming growth factor-β"Thromb. Haemost.. 82(4). 1297-1301 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ishiguro, K. Kadomatsu, T. Kojima, et al.: "Syndecan-4 Deficiency Impairs Focal Adhesion Formation Only under Restricted Conditions"J. Biol. Chem.. 275 (8). 5249-5252 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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