Andrea
Hoffmann Gerhard
Gross ABSTRACT This review focuses on the molecular aspects of osteogenesis and chondrogenesis as they relate to cellular and developmental levels. We discuss BMP (bone morphogenetic protein)-mediated signaling pathways for the patterning of skeletal elements and mechanisms for the induction of cartilage and bone formation. We emphasize BMP-mediated initiation of chondrogenesis and osteogenesis and consider BMP-dependent signaling cascades in mesenchymal progenitor cells during the development of the axial and appendicular skeleton and during growth plate and joint formation. In particular, we discuss BMP-signaling mediators of the Smad and TAK family and the modulation of these signals by cross-talk and integration with other signaling pathways.
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