Magnetic Bioactive Glass-Ceramics for Cancer Treatment
Summary
Magnetic bioactive glass-ceramics represent an emerging class of multifunctional biomaterials designed to combine the tissue-bonding ability of bioactive glasses with the heat-generating properties of magnetic phases. These composites typically comprise a silicate- or phosphate-based glass matrix in which iron oxide or ferrite nanoparticles are uniformly dispersed. On implantation, the glass fraction supports the nucleation of hydroxyapatite and encourages bone regeneration, while the magnetic phase enables localised heating under an alternating magnetic field, a process known as magnetic hyperthermia. By adjusting composition, crystallinity and porosity, researchers have tuned degradation rates, magnetic responsiveness and drug-loading capacity. Such materials offer a versatile platform for simultaneous bone defect repair, targeted tumour ablation, controlled chemotherapeutic release and non-invasive imaging, holding promise for advanced cancer therapies in orthopaedic and interventional oncology settings.
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Magnetic Bioactive Glass-Ceramics for Cancer Treatment publication trend
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Technical terms
Bioactive glass-ceramic: A glass-derived material that partially crystallises to form a composite capable of bonding with bone and soft tissue through hydroxyapatite formation.
Superparamagnetism: A form of magnetism occurring in sufficiently small magnetic nanoparticles, where thermal fluctuations prevent permanent magnetisation in the absence of an external field.
Magnetic hyperthermia: A therapeutic technique in which magnetic materials generate heat under an alternating magnetic field to selectively destroy cancer cells.
Sol-gel method: A chemical synthesis route in which a liquid precursor (sol) undergoes hydrolysis and condensation to form a gel, yielding highly homogeneous glass or glass-ceramic materials.
Mesoporous: Refers to materials with pore sizes between 2 and 50 nanometres, offering high surface area for enhanced bioactivity and drug loading.
References
- Fe-Doped Sol-Gel Glasses and Glass-Ceramics for Magnetic Hyperthermia. Materials (2018).
- Preparation and Characterization of Magnetic Mesoporous Bioactive Glass/Carbon Composite Scaffolds. Journal of Chemistry (2013).
- The effect of vanadium ferrite doping on the bioactivity of mesoporous bioactive glass-ceramics. RSC Advances (2022).
- Magnetic biomaterials with nanostructures for improved medication delivery and bone regeneration. First-level investigation. Journal of Asian Ceramic Societies (2023).
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