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oai:docta.ucm.es:20.500.14352/353822024-04-17T12:34:03Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Cicuéndez Maroto, Mónica author Portoles, Pilar author Montes Casado, María author Izquierdo Barba, Isabel author Vallet Regí, María Dulce Nombre author Portolés Pérez, María Teresa 2023-06-19T15:07:24Z 2023-06-19T15:07:24Z 2014-06-14 2050-750X 10.1039/c4tb00106k https://hdl.handle.net/20.500.14352/35382 http://www.rsc.org/ The interaction of new nanocomposite mesoporous glass/hydroxyapatite (MGHA) scaffolds with immune cells involved in both innate and acquired immunity has been studied in vitro as an essential aspect of their biocompatibility assessment. Since the immune response can be affected by the degradation products of bioresorbable scaffolds and scaffold surface changes, both processes have been evaluated. No alterations in proliferation and viability of RAW-264.7 macrophage-like cells were detected after culture on MGHA scaffolds which did not induce cell apoptosis. However, a slight cell size decrease and an intracellular calcium content increase were observed after contact of this cell line with MGHA scaffolds or their extracts. Although no changes in the percentages of RAW cells with low and high contents of reactive oxygen species (ROS) are observed by the treatment with 7 day extracts, this study has revealed modifications of these percentages after direct contact with scaffolds and by the treatment with 24 h extracts, related to the high reactivity/bioactivity of this MGHA nanocomposite at initial times. Furthermore, when normal fresh murine spleen cells were used as an experimental model closer to physiological conditions, no significant alterations in the activation of different immune cell subpopulations were detected in the presence of 24 h MGHA extract. MGHA scaffolds did not affect either the spontaneous apoptosis or intracellular cytokine expression (IL-2, IL-10, IFN-gamma, and TNF-alpha.) after 24 h treatment. The results obtained in the present study with murine immune cell subpopulations (macrophages, lymphocytes B, lymphocytes T and natural killer cells) support the biocompatibility of the MGHA material and suggest an adequate host tissue response to their scaffolds upon their implantation. eng Effects of 3D nanocomposite bioceramic scaffolds on the immune response journal article URL https://docta.ucm.es/bitstreams/c7d9bb9c-4ebd-48bb-8791-a66492fd8cdc/download File MD5 fe5f032ef224be538dfeedd6c7806cba 1431126 application/pdf (620) J. Mater. Chem. B, 2, 3469-3479 2014 ISA.pdf URL https://docta.ucm.es/bitstreams/898a7db6-a801-4d02-ae06-fd241e5dc7e6/download File MD5 6c01f0d26713928633d016cbe179aecc 56720 text/plain (620) J. Mater. Chem. B, 2, 3469-3479 2014 ISA.pdf.txt