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1993 Fiscal Year Final Research Report Summary

Elucidation of genetic disorders in skeletal dysplasias.

Research Project

Project/Area Number 04807105
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Orthopaedic surgery
Research InstitutionOsaka University

Principal Investigator

NAKAHARA Haruhiko  Osaka Uni.Med.School, Orthopaedics, Assist Professor, 医学部, 助手 (10198179)

Co-Investigator(Kenkyū-buntansha) ONO Keiro  Osaka Uni.Med.School, Orthopaedics, Professor, 医学部, 教授 (70028330)
KIMURA Tomoatsu  Osaka Uni.Med.School, Orthopaedics, Associal Professor, 医学部, 講師 (80167379)
Project Period (FY) 1992 – 1993
Keywordsperiosteum / bone / cartilage / differentiation / cytokines
Research Abstract

Periosteum-derived cells have been reported to exhibit osteogenic and chondrogenic potentials in high cell density culture conditions. Using this system, the effects of TGFbeta and BMP-2 on proliferation and differentiation of periosteal mesenchymal cells were studied. TGFbeta shortened the time course of chondrogenesis and increased the amount of cartilage formation. On the other hand, the amount of bone decreased with TGFbeta treatment, whereas the time course of osteogenesis remained unaffected. BMP-2 enhanced bone formation without any effect on chondrogenesis. The developmental potential of periosteum-derived cells was also clonally assessed with an agar gel culture system. Two types of colonies were predominantly observed, one type of colony being chondrogenic, the other type osteogenic colonies. Supplementation with TGFbeta to this system shortened the time course of chondrogenesis and also increased colony forming efficiency of chondrogenic colonies. On the other hand, colony forming efficiency of osteogenic colonies decreased with TGFbeta treatment. These observations suggest that there are both committed osteoprogenitor and chondroprogenitor cells present in the periostel cell population, and TGFbeta stimulates proliferation and differentiation of chondrogenic cell population by its targeted action. These resuls taken together suggest that TGFbeta and BMP regulate osteochondrogenic differrentiation of cells in the periosteum in the process of fracture healing.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] K.Nakata,H.Nakahara,T.Kimura,A.Kojima,M.T.Inoshita,A.Caplan,K.Ono: "Collagin gene expression during dioradrogenesis from drick periostedm-derived cells" FEBS LETTERS. 299. 278-282 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwasaki,K.Nakata,H.Nakahara,T.Nakase,T.Kimura,K.Kimata,A.Caplan,K.Ono: "Transforming growth factor-β1 Stinulates Chondnogonsis and inhibits osteogenosis in high density culture of periosteum-derived cells" Endocrinology. 132. 1603-1608 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Nakase,H.Nakahara,M.Iwasaki,T.Kimura,T.Kimata,K.Watanabe,A.Caplan,K.Ono: "Clonal analysis for developmental potential of chick periosfeum derived cells : Agargel" Biochemical and Biophysical Research Communixdisis. 195. 1422-1428 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Iwasaki,T.Nakase,H.Nakahara,K.Takaoka,A.Caplan,K.Ono: "Bone Morphogenetic Protein-2 stimulates osfecgenisis and deopoat affect clrovadrcgcnesis,in osteggiondigcnic olifferentiation of periosteum-derived cells." J.Bore Miner.Res. (in press). (1994〔)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Nakata, H.Nakahara, T.Kimura, A.Kojima, M.Iwasaki, A.Caplan, K.Ono: "Cllager gene expression during drordroosteagenesis from chick periosfecem-derived cells." FEBS LETTERS. 299. 278-282 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Iwasaki, K.Nakata, H.Nakahara, T.Nakase, T.Kimura, K.Kimata, A.Caplan, K.Ono: "Transforming gronth factor-beta1 stimulates chordrogenesis and inpibits osteogenesis in high kensity culfure of periostecmderived cells." Endoorinology. 132. 1603-1608 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Nakase, H.Nakahara, M.Iwasaki, T.Kimura, K.Kimata, K.Watanabe, A.Caplan, K.Ono: "Clonal analysis for developmental potential." Biochonical and Biophysical Research Communications I. 195. 1422-1428 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Iwasaki, T.Nakase, K.Takaoka, A.Caplan, K.Ono: "Bove Morplicgenetic protein-alpha stimulate osteogenesis and doen not affect chordrogenesis in osteodrovdrogenic differentiation of periosteum-derived cells." J.Bone Miner Res. (in press). (1994)

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

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Published: 1999-03-09  

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