Gene delivery of osteoinductive signals to a human fetal osteoblast cell line induces cell death in a dose-dependent manner

Drug Delivery and Translational Research
Anusuya RamasubramanianFan Yang

Abstract

Gene delivery provides a powerful tool for regulating tissue regeneration by activating or inhibiting specific genes associated with targeted signaling pathways. Up-regulating bone morphogenetic protein-2 (BMP-2) or silencing GNAS and Noggin gene expression in stem cells has been shown to enhance osteogenic differentiation and bone tissue formation. However, few studies have examined how such gene delivery would influence other differentiated cell types residing in the bone. In this study, we examined the effects of DNA delivery of BMP-2 and siRNA delivery of GNAS or Noggin on a widely used human fetal osteoblast cell line (hFOB1.19) using biomaterials-mediated gene delivery. Our results showed that both GNAS and Noggin siRNA delivery increased cell death in hFOB1.19 in a dose-dependent manner. In particular, groups treated with the highest doses of BMP-2, siGNAS or siNoggin showed a more than 50% decline in cell proliferation and a 90% decline in cell viability compared to untransfected and sham DNA/siRNA-transfected controls. TUNEL staining showed that BMP-2, siGNAS or siNoggin induced cell apoptosis in hFOBs. In contrast, cells transfected using sham DNA or siRNA showed no noticeable cell death or apoptosis. These results el...Continue Reading

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Citations

Feb 19, 2016·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·Saber GhadakzadehMaryam Tabrizian
Jun 26, 2021·Frontiers in Molecular Biosciences·Laila A Damiati, Sarah El-Messeiry

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