Literature DB >> 9450560

Osteopontin involvement in integrin-mediated cell signaling and regulation of expression of alkaline phosphatase during early differentiation of UMR cells.

Y K Liu1, T Uemura, A Nemoto, T Yabe, N Fujii, T Ushida, T Tateishi.   

Abstract

To clarify the function of osteopontin in osteoblast differentiation, we have examined the signal transduction pathway in an osteoblastic cell line (UMR106-6) bound to osteopontin, fibronectin, vitronectin and collagen type I surfaces. This was done by investigating the production and autophosphorylation of focal adhesion kinase (FAK) and the expression of alkaline phosphatase (ALP) at the transcription level. Results suggest that osteopontin was not only responsible for the autophosphorylation of FAK but regulated the expression of ALP, which was strongly correlated with FAK activity. These results suggest that osteopontin might act as a trigger in the early differentiation of osteoblasts.

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Year:  1997        PMID： 9450560     DOI： 10.1016/s0014-5793(97)01498-1

Source DB:  PubMed          Journal:  FEBS Lett        ISSN： 0014-5793            Impact factor:   4.124


  13 in total

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