Abstract
Bone defects and tumor cell residues after bone tumor resection have always been a challenge. We tried to investigate a kind of bioglass with both bone repair and tumor killing capability to achieve two birds with one stone. We used a Sol-Gel method to prepare the high porous magnetic bioglass (MBG) and then compounded the MBG with calcium sulfate (CS) bone cement to form the composite scaffold (CS-MBG). We found that the CS-MBG could reach about 43 °C under the condition of magnetic field in vitro. Under this condition, CS-MBG would release Ca2+ resulting in the cell death of calcium overload. Meanwhile, the suitable pH and osteogenic activity of CS-MBG can promote the postoperative bone repair and inhibit the growth of bone tumors. Our work has innovatively designed a magnetic bioglass and verified its mechanism of synergistic hyperthermia against tumor, providing a new idea for the treatment of tumor bone defects with magnetic bioglass.
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