title: Multi-Layered Scaffolds for Osteochondral Tissue Engineering: In Vitro Response of Co-Cultured Human Mesenchymal Stem Cells.
abstract: A promising strategy for osteochondral interface regeneration consists in the development of hybrid scaffolds, composed of distinct but integrated layers able to mimic the different regions of cartilage and bone. We developed multi-layered scaffolds by assembling a gelatin layer with layers containing different amounts of gelatin and hydroxyapatite nanocrystals, and using a gelatin solution (as a glue) to stick layers together. The scaffolds exhibit a high, interconnected porosity and mechanical properties varying with composition along the thickness of the scaffolds up to values of compressive stress and modulus of about 1 and 14 MPa, respectively. In vitro tests demonstrate that the different layers of the scaffolds promote chondrogenic and osteogenic differentiation of Human Mesenchimal Stem Cells (hMSC).
authors.affiliation: Department of Chemistry "G. Ciamician", via Selmi 2 40126 University of Bologna, Bologna, 40126, Italy.
authors.forename: Sofia
authors.initials: S
authors.lastname: Amadori
authors.affiliation: Laboratory of preclinical and surgical studies, Research Institute Codivilla Putti-Rizzoli Orthopaedic Institute, via di Barbiano, 40126, Bologna, Italy.
authors.forename: Paola
authors.initials: P
authors.lastname: Torricelli
authors.affiliation: Department of Chemistry "G. Ciamician", via Selmi 2 40126 University of Bologna, Bologna, 40126, Italy. silvia.panzavolta@unibo.it.
authors.forename: Silvia
authors.initials: S
authors.lastname: Panzavolta
authors.affiliation: Laboratory of preclinical and surgical studies, Research Institute Codivilla Putti-Rizzoli Orthopaedic Institute, via di Barbiano, 40126, Bologna, Italy.
authors.forename: Annapaola
authors.initials: A
authors.lastname: Parrilli
authors.affiliation: Laboratory of preclinical and surgical studies, Research Institute Codivilla Putti-Rizzoli Orthopaedic Institute, via di Barbiano, 40126, Bologna, Italy.
authors.forename: Milena
authors.initials: M
authors.lastname: Fini
authors.affiliation: Department of Chemistry "G. Ciamician", via Selmi 2 40126 University of Bologna, Bologna, 40126, Italy.
authors.forename: Adriana
authors.initials: A
authors.lastname: Bigi
mesh_terms: D002356:Cartilage / Q000166:cytology / Q000378:metabolism*; D018920:Coculture Techniques; D017886:Durapatite / Q000737:chemistry*; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism*; D053758:Nanoparticles / Q000737:chemistry*; D010012:Osteogenesis; D023822:Tissue Engineering / Q000379:methods; D054457:Tissue Scaffolds / Q000737:chemistry*
chemical_list: D017886:Durapatite
keywords: co-cultures; gelatin; hydroxyapatite; multi-layered scaffolds; osteochondral regeneration