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Osteogenic properties of starch poly(ε‐caprolactone) (SPCL) fiber meshes loaded with osteoblast‐like cells in a rat critical‐sized cranial defect
Author(s) -
Link Dennis P.,
Gardel Leandro S.,
Correlo Vitor M.,
Gomes Manuela E.,
Reis Rui L.
Publication year - 2013
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.34614
Subject(s) - materials science , osteoblast , biomedical engineering , scaffold , regeneration (biology) , in vivo , caprolactone , microbiology and biotechnology , biophysics , in vitro , composite material , chemistry , biology , medicine , biochemistry , copolymer , polymer
Osteoblast‐like cells together with a suitable scaffold can aid to the regeneration of bone defects. A suitable scaffold could be starch poly(ε‐caprolactone) (SPCL) fiber meshes, which have shown a high potential to support bone formation in previous in vitro and in noncritical sized in vivo studies. The aim of this study was to assess the effect of these scaffolds alone or combined with osteoblast‐like cells in the regeneration of a critical‐sized cranial defect in male Fisher rats. Empty defects and defects filled with cell‐free scaffolds were used as controls groups. Samples were analyzed by microcomputed tomography (micro‐CT) and histological analyses. Histological analyses revealed that all study groups showed new bone formation from the defect edges toward the interior of the defects. In addition, bone was formed in the center of the scaffolds, especially in the groups containing preloaded osteoblast‐like cells. Micro‐CT reconstructions showed that bone formation increased over time and was enhanced with the inclusion of preloaded osteoblast‐like cells compared with SPCL scaffolds alone. According to these results, the preloaded osteoblast‐like cells contributed to the bone regeneration process in a critical‐sized bone defect. Furthermore, SPCL fiber meshes proved to be an osteoconductive material to use for bone regeneration purposes. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 101A: 3059–3065, 2013.