| Literature DB >> 20452350 |
Ling Fang1, Shireen Kahai, Weining Yang, Chengyan He, Arun Seth, Chun Peng, Burton B Yang.
Abstract
We used cDNA microarray to identify transforming growth factor beta (TGF-beta) responsive target genes during osteoblast development and found that nephronectin (Npnt) is one such gene that is significantly down-regulated. Here we report the role of TGF-beta in regulating Npnt-mediated osteoblast differentiation. We found that the effect of TGF-beta on Npnt expression is associated with a change in cell morphology in a dose-dependent manner. Npnt-induced osteoblast differentiation was also inhibited by TGF-beta, which changed cell morphology from cuboidal to fibroblastic, an indication that osteoblast differentiation was disrupted. Furthermore, TGF-beta inhibited differentiation of osteoblasts transfected with various truncated Npnt constructs, suggesting that TGF-beta can exert a down-stream effect on Npnt function. Our results suggest that TGF-beta can inhibit osteoblast differentiation through various mechanisms. Copyright 2010 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.Entities:
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Year: 2010 PMID: 20452350 DOI: 10.1016/j.febslet.2010.04.074
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124