• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1996 Fiscal Year Final Research Report Summary

Development of a new therapeutic approach for senile osteoporosis using bone matrix deoorin

Research Project

Project/Area Number 06557055
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field 内分泌・代謝学
Research InstitutionUniversity of Tokyo School

Principal Investigator

MATSUMOTO Toshio  University of Tokyo, 4th Dept of Internal Med, Lecturer, 医学部・附属病院(分), 講師 (20157374)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Kazuhiro  Mitsubishi Chemical, Applied Biology Res Lab, Researcher, 応用生物研究所, 研究員
TAKEUCHI Yasuhiro  University of Tokyo, 4th Dept of Internal Med, Assistant Professor, 医学部・附属病院(分), 助手 (50202164)
FUKUMOTO Seiji  University of Tokyo, 4th Dept of Internal Med, Assistant Professor, 医学部・附属病院(分), 助手 (30202287)
Project Period (FY) 1994 – 1996
Keywordsdecorin / osteoblast / bone matrix / bone formation / aging / senile osteoporosis / TGF-beta
Research Abstract

Bone matrix decorin binds transforming growth factor (TGF)-beta with high affinity, and the binding of TGF-beta with decorin increases its binding to TGF-beta receptors (Takeuchi et al. J Biol Chem 269 : 32634,1994). These results suggested that decorin may serve as a binding protein of TGF-beta in bone matrix, and may modilate the actions of TGF-beta during bone formation process. It has been postulated that a reduction in the actions of growth factors including TGF-beta plays an important role in the development of senile osteoporosis. The present studies are undertaken to clarify the role of decorin in the deposition of TGF-beta into bone matrix as well as the regulation of TGF-beta actions in bone. Furthermore, recombinant decorin was prepared in order to develop a new therapeutic approach to senile osteoporosis by a targeted application of recombinant decorin to bone.
Osteoblasts posess specific binding sites for decorin on the plasma membrane, and the binding of decorin to its binding sites causes an internalization and degradation of decorin. Binding of TGF-beta-bound decorin to its binding sites facilitates the binding of TGF-beta to TGF-beta receptors, which appears to be the mechanism whereby the binding of TGF-beta to decorin enhances its actions. The present studies also demonstrated that binding sites for decorin is upregulated by active vitamin D metabolites. Although age-related changes in the content of decroin in bovine bone matrix was examined, no obvious changes could be detected. Finally, recombinant human decorin was prepared by transfecting human decorine c DNA into CHO cells. However, enough materials could not be obtained to allow investigations into the in vivo effect of recombinant decorin in the prevention of age-related bone loss.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Y.Takeuchi,et al.: "Differentiation and cell-surface expression of transforming growth factor-β receptors are regulated by interaction with matrix collagen in murine osteoblastic cells." J Biol Chem. 271(7). 3938-3944 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Fujita,et al.: "Activation of Cl-channels by extracellular Ca2+in freshly isolated rabbit osteoclasts." J Cell Physiol. 169(4). 217-225 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Fuse,et al.: "A new synthesic steroid,osaterone acetate (TZP-4238),increases cortical bone mass and strength by enhancing bone formation in ovariectomized rats." J Bone Mineral Res. 12(4) in press. (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kawaguchi,et al.: "OPLL-Ossification of the posterior longitudinal ligament-" Springer-Verlag Tokyo, 218 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Matsumoto,et al.: "Advances in Organ Biology : Molecular and Cellular Biology of Bone" JAI Press,Connecticut in press, (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Takeuchi, et al.: "Differentiation and cell-surface expression of transforming growth factor-beta receptors are regulated by interaction with matrix collagen in murine osteoblastic cells." J Biol Chem. 271-7. 3938-3944 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Fujita, et al.: "Activation of Cl^- channels by extracellular Ca^<2+> in freshly isolated rabbit osteoclasts." J Cell Physiol. 169-4. 217-225 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Fuse, et al.: "A new synthesic steroil, osaterone acetate (TZP-4238), increases cortical bone mass and strength by enhancing bone formation in ovariectomized rats." J Bone Mineral Res. 12-4(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kawaguchi, et al.: "Systemic control of bone formation In ; OPLL-Ossification of the posterior longitudinal ligament-" Springer-Verlag, Tokyo. 73-77 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Matsumoto, et al.: "Metabolic backgroud of ossification of the posterior longitudinal ligament In ; Advances in Organ Biology : Molecular and Cellular Biology of Bone" JAI Press, Connecticut. (in press). (1997)

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

URL: 

Published: 1999-03-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi