Coaxial electrospinning of PEEU/gelatin to fiber meshes with enhanced mesenchymal stem cell attachment and proliferation.
Clin Hemorheol Microcirc
; 74(1): 53-66, 2020.
Article
em En
| MEDLINE
| ID: mdl-31743992
Microfibers with a core-shell structure can be produced by co-axial electrospinning, allowing for the functionalization of the outer layer with bioactive molecules. In this study, a thermoplastic, degradable polyesteretherurethane (PEEU), consisting of poly(p-dioxanone) (PPDO) and poly(É-caprolactone) (PCL) segments with different PPDO to PCL weight ratios, were processed into fiber meshes by co-axial electrospinning with gelatin. The prepared PEEU fibers have a diameter of 1.3±0.5 µm and an elastic modulus of around 5.1±1.0âMPa as measured by tensile testing in a dry state at 37°C, while the PEEU/Gelatin core-shell fibers with a gelatin content of 12±6 wt% and a diameter of 1.5±0.5 µm possess an elastic modulus of 15.0±1.1âMPa in a dry state at 37 °C but as low as 0.7±0.7âMPa when hydrated at 37 °C. Co-axial electrospinning allowed for the homogeneous distribution of the gelatin shell along the whole microfiber. Gelatin with conjugated Fluorescein (FITC) remained stable on the PEEU fibers after 7 days incubation in Phosphate-buffered saline (PBS) at 37 °C. The gelatin coating on PEEU fibers lead to enhanced human adipose tissue derived mesenchymal stem cell (hADSC) attachment and a proliferation rate 81.7±34.1 % higher in cell number in PEEU50/Gelatin fibers after 7 days of cell culture when compared to PEEU fibers without coating. In this work, we demonstrate that water-soluble gelatin can be incorporated as the outer shell of a polymer fiber via molecular entanglement, with a sustained presence and role in enhancing stem cell attachment and proliferation.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poliésteres
/
Polímeros
/
Engenharia Tecidual
/
Proliferação de Células
/
Células-Tronco Mesenquimais
/
Gelatina
Limite:
Humans
Idioma:
En
Revista:
Clin Hemorheol Microcirc
Assunto da revista:
ANGIOLOGIA
/
HEMATOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Alemanha