NS  Vol.5 No.1 , January 2013
Effect of a novel compound from Lycopodium obscurum L. on osteogenic activity of osteoblasts in vitro
We investigated the potential of an extract of Lycopodium obscurum L.; stigmastane-3-oxo- 21-oic acid (SA), to enhance osteogensis of mouse osteoblastic MC3T3-E1 cells. SA at a concentration of 16 μM was found to have no significant effect upon the viability of the cells, thus concentrations of 8 μM and 16 μM of SA were used in all further experiments. Both concentrations of SA had an inhibitory affect upon alkaline phosphatase activity (ALP) after 8 days incubation, however, after 16 days activity was restored to control levels. However Alizarin red S staining showed increased levels of mineralization for both concentrations after 16 days culture. Real time PCR showed inhibition of genes Runx2 and Osterix genes responsible for the up-regulation of ALP. However early time point (8 days) up-regulation of bone matrix mineralization genes OPN and OCN, and late time point (16 days) up-regulation of both Jun-D and Fra-2 mRNA expression was significantly enhanced. These results suggest a potential mechanism of SA in enhancing bone fracture healing is through the up-regulating bone matrix mineralization.

Cite this paper
Wang, C. , Wu, R. , Yang, G. , Blackwood, K. , Friis, T. , Hutmacher, D. and Woodruff, M. (2013) Effect of a novel compound from Lycopodium obscurum L. on osteogenic activity of osteoblasts in vitro. Natural Science, 5, 84-92. doi: 10.4236/ns.2013.51014.
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