title: Effect of micro- and macroporosity of bone tissue three-dimensional-poly(epsilon-caprolactone) scaffold on human mesenchymal stem cells invasion, proliferation, and differentiation in vitro.
abstract: The design of porous scaffolds able to promote and guide cell proliferation, colonization, and biosynthesis in three dimensions is key determinant in bone tissue engineering (bTE). The aim of this study was to assess the role of the micro-architecture of poly(epsilon-caprolactone) scaffolds in affecting human mesenchymal stem cells' (hMSCs) spatial organization, proliferation, and osteogenic differentiation in vitro. Poly(epsilon-caprolactone) scaffolds for bTE and characterized by mono-modal and bi-modal pore size distributions were prepared by the combination of gas foaming and selective polymer extraction from co-continuous blends. The topological properties of the pore structure of the scaffolds were analyzed and the results correlated with the ability of hMSCs to proliferate, infiltrate, and differentiate in vitro in three dimensions. Results showed that the micro-architecture of the pore structure of the scaffolds plays a crucial role in defining cell seeding efficiency as well as hMSCs' three-dimensional colonization, proliferation, and osteogenic differentiation. Taken all together, our results indicated that process technologies able to allow a fine-tune of the topological properties of biodegradable porous scaffolds are essential for bTE strategies.
authors.affiliation: Interdisciplinary Research Centre on Biomaterials, CRIB, University of Naples Federico II, Naples, Italy.
authors.forename: Aurelio
authors.initials: A
authors.lastname: Salerno
authors.forename: Daniela
authors.initials: D
authors.lastname: Guarnieri
authors.forename: Maria
authors.initials: M
authors.lastname: Iannone
authors.forename: Stefania
authors.initials: S
authors.lastname: Zeppetelli
authors.forename: Paolo A
authors.initials: PA
authors.lastname: Netti
mesh_terms: D001846:Bone Development / Q000502:physiology*; D002454:Cell Differentiation; D049109:Cell Proliferation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D008422:Materials Testing; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000502:physiology*; D010006:Osteoblasts / Q000166:cytology* / Q000502:physiology*; D010012:Osteogenesis; D011091:Polyesters / Q000138:chemical synthesis*; D016062:Porosity; D023822:Tissue Engineering / Q000295:instrumentation*; D054457:Tissue Scaffolds
chemical_list: D011091:Polyesters; C016240:polycaprolactone