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Influence of scaffold morphology on co‐cultures of human endothelial and adipose tissue‐derived stem cells
Author(s) -
ArnalPastor M.,
MartínezRamos C.,
VallésLluch A.,
Pradas M. Monleón
Publication year - 2016
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.35682
Subject(s) - tissue engineering , materials science , adipose tissue , microbiology and biotechnology , stem cell , cd31 , viability assay , biomedical engineering , scaffold , paracrine signalling , endothelial stem cell , cell adhesion , adhesion , cell , biophysics , biology , biochemistry , in vitro , receptor , medicine , composite material
The interior of tissue engineering scaffolds must be vascularizable and allow adequate nutrients perfusion in order to ensure the viability of the cells colonizing them. The promotion of rapid vascularization of scaffolds is critical for thick artificial constructs. In the present study co‐cultures of human endothelial and adipose tissue‐derived stem cells have been performed in poly(ethyl acrylate) scaffolds with two different pore structures: grid‐like (PEA‐o) or sponge‐like (PEA‐s), in combination with a self‐assembling peptide gel filling the pores, which aims to mimic the physiological niche. After 2 and 7 culture days, cell adhesion, proliferation and migration, the expression of cell surface markers like CD31 and CD90 and the release of VEGF were assessed by means of immunocytochemistry, scanning electronic microscopy, flow cytometry and ELISA analyses. The study demonstrated that PEA‐s scaffolds promoted greater cell organization into tubular‐like structures than PEA‐o scaffolds, and this was enhanced by the presence of the peptide gel. Paracrine signaling from adipose cells significantly improved endothelial cell viability, proving the advantageous combination of this system for obtaining easily vascularizable tissue engineered grafts. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 1523–1533, 2016.