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Hierarchically engineered fibrous scaffolds for bone regeneration
Sachot, Nadège; Castaño Linares, Óscar; Mateos Timoneda, Miguel Ángel; Engel López, Elisabeth; Planell Estany, Josep Anton
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Institut de Bioenginyeria de Catalunya; Universitat Politècnica de Catalunya. BIBITE - Biomaterials, Biomecànica i Enginyeria de Teixits
Surface properties of biomaterials play a major role in the governing of cell functionalities. It is well known that mechanical, chemical and nanotopo- graphic cues, for example, influence cell proliferation and differentiation. Here, we present a novel coating protocol to produce hierarchicallyengineered fibrous scaffolds with tailorable surface characteristics, which mimic bone extracellular matrix. Based on the sol–gel method and a succession of surface treatments, hollow electrospun polylactic acid fibres were coated with a silicon–calcium–phosphate bioactive organic–inorganic glass. Compared with pure polymeric fibres that showed a completely smooth surface, the coated fibres exhibited a nanostructured topography and greater roughness. They also showed improved hydrophilic properties and a Young’s modulus sixfold higher than non-coated ones, while remaining fully flexible and easy to handle. Rat mesenchymal stem cells cultured on these fibres showed great cellular spreading and interactions with the material. This protocol can be transferred to other structures and glasses, allowing the fabrication of var- ious materials with well-defined features. This novel approach represents therefore a valuable improvement in the production of artificial matrices able to direct stem cell fate through physical and chemical interactions
Àrees temàtiques de la UPC::Enginyeria dels materials
Bone regeneration
Biomedical materials
Fibres
Functional coating
Hybrid materials
Nanostructures
Tissue engineering
Enginyeria de teixits
Biomaterials
Ciments ossis
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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