The collagen receptor, discoidin domain receptor 2, functions in Gli1-positive skeletal progenitors and chondrocytes to control bone development
摘要INTRODUCTIONIn addition to its structural function, the collagen-rich extra-cellular matrix (ECM) of bone has important role in establishing and maintaining cellular organization through control of proliferation, migration, differentiation, and remodeling.1–3 These ECM functions are controlled by receptor-mediated interactions with progenitor cells. Disruption of cell-ECM interactions has been implicated in a wide spectrum of human skeletal disorders, including skeletal dysplasias, chondrodyspla-sias, osteoarthritis, and osteoporosis.1,4–6 Specific interactions between collagens and skeletal progenitors are mediated by cell-surface receptors, principally β1 integrins and discoidin domain receptors (DDRs).
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