Cartilage provides the template for endochondral ossification and is crucial for determining the length and width of the skeleton. Transgenic mice with targeted expression of recombinant cartilage-derived morphogenetic protein-1 (CDMP-1), a member of the bone morphogenetic protein family, were created to investigate the role of CDMP-1 in skeletal formation. The mice exhibited chondrodysplasia with expanded cartilage, which consists of the enlarged hypertrophic zone and the reduced proliferating chondrocyte zone. Histologically, CDMP-1 increased the number of chondroprogenitor cells and accelerated chondrocyte differentiation to hypertrophy. Expression of CDMP-1 in the notochord inhibited vertebral body formation by blocking migration of sclerotome cells to the notochord. These results indicate that CDMP-1 antagonizes the ventralization signals from the notochord. Our study suggests a molecular mechanism by which CDMP-1 regulates the formation, growth, and differentiation of the skeletal elements.
Role of CDMP-1 in Skeletal Morphogenesis: Promotion of Mesenchymal Cell Recruitment and Chondrocyte Differentiation
Address correspondence to Yoshihiko Yamada, Ph.D., Craniofacial Developmental Biology and Regeneration Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, 9000 Rockville Pike, Building 30, Room 405, Bethesda, MD 20892. Tel.: (301) 496-2111. Fax: (301) 402-0897. E-mail: [email protected]
Frank P. Luyten's present address is Division of Rheumatology, Universitaire Ziekenhuizen Leuven, U.Z. Pellenberg, Weligerveld 1, 3212 Lubbeek (Pellenberg), Belgium.
Noriyuki Tsumaki, Kazuhiro Tanaka, Eri Arikawa-Hirasawa, Takanobu Nakase, Tomoatsu Kimura, J. Terrig Thomas, Takahiro Ochi, Frank P. Luyten, Yoshihiko Yamada; Role of CDMP-1 in Skeletal Morphogenesis: Promotion of Mesenchymal Cell Recruitment and Chondrocyte Differentiation . J Cell Biol 11 January 1999; 144 (1): 161–173. doi: https://doi.org/10.1083/jcb.144.1.161
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