Abstract
The extremely poor prognosis of patients with metastatic osteosarcoma indicates the need for novel therapeutic approaches. Ectodysplasin-A2 (EDA-A2) is a recently isolated member of the tumor necrosis factor superfamily that binds to X-linked ectodermal dysplasia receptor (XEDAR). In this report, we have analyzed the biological activity of EDA-A2 against osteosarcoma-derived cell lines. We report that XEDAR is expressed in cell lines derived from osteosarcoma and adenoviral-mediated expression of EDA-A2 in these cells results in the induction of apoptosis via caspase activation and cell-cycle arrest in the G0/G1 phase. Treatment with EDA-A2 also upregulates the expression of alkaline phosphatase, a marker of osteogenic differentiation, in a caspase-dependent fashion. Collectively, our results suggest that EDA-A2 may be a promising agent for the gene therapy of osteosarcoma.
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This work was supported by Grant R01 DE 15189 from the National Institute of Dental and Craniofacial Research.
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Chang, B., Punj, V., Shindo, M. et al. Adenoviral-mediated gene transfer of ectodysplasin-A2 results in induction of apoptosis and cell-cycle arrest in osteosarcoma cell lines. Cancer Gene Ther 14, 927–933 (2007). https://doi.org/10.1038/sj.cgt.7701078
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DOI: https://doi.org/10.1038/sj.cgt.7701078
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