2026-04-17T20:28:12Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3862752026-01-24T04:46:14Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Guillem Martí, Jordi author Vidal Girona, Elia author Girotti, Alessandra author Heras Parets, Aina author Torres Garrido, Diego author Arias Vallejo, Francisco Javier author Ginebra Molins, Maria Pau author Rodriguez Cabello, Jose Carlos author Manero Planella, José María author 2023-03-08 The 3D printing of titanium (Ti) offers countless possibilities for the development of personalized implants with suitable mechanical properties for different medical applications. However, the poor bioactivity of Ti is still a challenge that needs to be addressed to promote scaffold osseointegration. The aim of the present study was to functionalize Ti scaffolds with genetically modified elastin-like recombinamers (ELRs), synthetic polymeric proteins containing the elastin epitopes responsible for their mechanical properties and for promoting mesenchymal stem cell (MSC) recruitment, proliferation, and differentiation to ultimately increase scaffold osseointegration. To this end, ELRs containing specific cell-adhesive (RGD) and/or osteoinductive (SNA15) moieties were covalently attached to Ti scaffolds. Cell adhesion, proliferation, and colonization were enhanced on those scaffolds functionalized with RGD-ELR, while differentiation was promoted on those with SNA15-ELR. The combination of both RGD and SNA15 into the same ELR stimulated cell adhesion, proliferation, and differentiation, although at lower levels than those for every single moiety. These results suggest that biofunctionalization with SNA15-ELRs could modulate the cellular response to improve the osseointegration of Ti implants. Further investigation on the amount and distribution of RGD and SNA15 moieties in ELRs could improve cell adhesion, proliferation, and differentiation compared to the present study. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Enginyeria dels materials Biomedical materials Three-dimensional printing Titanium alloys 3D printing Elastin-like recombinamers Functionalization Osseointegration Titanium Materials biomèdics Impressió 3D Titani -- Aliatges Functionalization of 3D-printed titanium scaffolds with elastin-like recombinamers to improve cell colonization and osteoinduction