Type I collagen induces expression of bone morphogenetic protein receptor type II

Proprietà collagene osseo

2001

The extracellular matrix regulates many fundamental cellular processes such as proliferation, migration, and differentiation. Among the ECM components, type I collagen induces endothelial tube formation in vitro

By analysing genes participating in this event, the bone morphogenetic protein receptor-II (BMPR-II) was detected to be upregulated in cells cultured on or within fibrillar type I collagen. Furthermore, the basement membrane type IV collagen or amorphous type I collagen did not show an induction of BMPR-II. Addition of the BMPR-II specific ligands, BMP2 and BMP4, in the culture medium of the endothelial cells seeded on type I collagen increased [(3)H]-thymidine incorporation into cellular DNA, indicating that endothelial cells were able to form a functional receptor. In addition, in the chick chorioallantoic membrane (CAM), an in vivo angiogenesis model, BMPR-II and BMPR-I were upregulated in the growing phase and ceased in the mature CAM.

Pubblicato su Biochemical and Biophysical Research Communications

Pubmed

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