This study intends to determine the effects of a long-term stimulation of primary human osteoblasts with TGF-β
1, to identify the intracellular mechanism of TGF-β
1 signal transduction in these cells and to investigate the possibility of pharmacological inhibition of the signal pathway identified. Long-term TGF-β
1 stimulation leads to an increase in proliferation, a decrease in activity of alkaline phosphatase and a decrease in producing anorganic matrix by these cells. TGF-β
1 mediates its signal by phosphorylation of Smad2/3 and signal transduction and its effects can be blocked by pharmacological inhibition of Alk5 using SB-431542. These results have clinical relevance regarding diseases with elevated serum levels of TGF-β like fresh fractures of long bones, idiopathic osteoporosis or hepatic osteodystrophy.
«This study intends to determine the effects of a long-term stimulation of primary human osteoblasts with TGF-β
1, to identify the intracellular mechanism of TGF-β
1 signal transduction in these cells and to investigate the possibility of pharmacological inhibition of the signal pathway identified. Long-term TGF-β
1 stimulation leads to an increase in proliferation, a decrease in activity of alkaline phosphatase and a decrease in producing anorganic matrix by these cells. TGF-β
1 mediates its signal...
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