Cerqueira, A.Romero-Gavilán, F.García-Arnáez, I.Martínez-Ramos, CristinaOzturan, S.Iloro, I.Azkargorta, M.Elortza, F.Izquierdo, R.Gurruchaga, M.Goñi, I.Suay, J.2022-04-052022-04-052021-020928-4931https://riunet.upv.es/handle/10251/181818[EN] Zinc is an essential element with an important role in stimulating the osteogenesis and mineralization and suppressing osteoclast differentiation. In this study, new bioactive ZnCl2-doped sol-gel materials were designed to be applied as coatings onto titanium. The biomaterials were physicochemically characterized and the cellular responses evaluated in vitro using MC3T3-E1 osteoblasts and RAW264.7 macrophages. The effect of Zn on the adsorption of human serum proteins onto the material surface was evaluated through nLC-MS/MS. The incorporation of Zn did not affect the crosslinking of the sol-gel network. A controlled Zn2+ release was obtained, reaching values below 10 ppm after 21 days. The materials were no cytotoxic and lead to increased gene expression of ALP, TGF-beta, and RUNX2 in the osteoblasts. In macrophages, an increase of IL-1 beta, TGF-beta, and IL-4 gene expression was accompanied by a reduced TNF-alpha liberation. Proteomic results showed changes in the adsorption patterns of proteins associated with immunological, coagulative, and regenerative functions, in a Zn dose-dependent manner. The variations in protein adsorption might lead to the downregulation of the NF-kappa B pathway, thus explain the observed biological effects of Zn incorporation into biomaterials. Overall, these coatings demonstrated their potential to promote bone tissue regeneration.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)ProteomicsBioinorganic chemistryBiomaterialsBone regenerationHybridsCIENCIA DE LOS MATERIALES E INGENIERIA METALURGICAArtículo10.1016/j.msec.2020.111839Abierto33579477