Interaction of monodispersed strontium containing bioactive glass nanoparticles with macrophages

Naruphontjirakul, Parichart, Li, Siwei, Pinna, Alessandra, Barrak, Fadi N orcid iconORCID: 0000-0002-3906-9174, Chen, Shu, Redpath, Andia N., Rankin, Sara M., Porter, Alexandra E. and Jones, Julian R. (2021) Interaction of monodispersed strontium containing bioactive glass nanoparticles with macrophages. Materials Science and Engineering: C . p. 112610. ISSN 0928-4931

Full text not available from this repository.

Official URL:


The cellular response of murine primary macrophages to monodisperse strontium containing bioactive glass nanoparticles (SrBGNPs), with diameters of 90 ± 10 nm and a composition (mol%) of 88.8 SiO2–1.8CaO-9.4SrO (9.4% Sr-BGNPs) was investigated for the first time. Macrophage response is critical as applications of bioactive nanoparticles will involve the nanoparticles circulating in the blood stream and macrophages will be the first cells to encounter the particles, as part of inflammatory response mechanisms. Macrophage viability and total DNA measurements were not decreased by particle concentrations of up to 250 μg/mL. The Sr-BGNPs were actively internalised by the macrophages via formation of endosome/lysosome-like vesicles bordered by a membrane inside the cells. The Sr-BGNPs degraded inside the cells, with the Ca and Sr maintained inside the silica network. When RAW264.7 cells were incubated with Sr-BGNPs, the cells were polarised towards the pro-regenerative M2 population rather than the pro-inflammatory M1 population. Sr-BGNPs are potential biocompatible vehicles for therapeutic cation delivery for applications in bone regeneration.

Repository Staff Only: item control page