TY - JOUR
T1 - Synthesis, electrospinning and in vitro test of a new biodegradable gelatin-based poly(ester urethane urea) for soft tissue engineering
AU - Vieira, Tânia
AU - Silva, Jorge Carvalho
AU - Borges, João P.
AU - Henriques, Célia
N1 - Sem PDF conforme despacho.
info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F90682%2F2012/PT#
info:eu-repo/grantAgreement/FCT/5876/147333/PT#
Tania Vieira acknowledges financial support from "Fundacao para a Ciencia e Tecnologia", FCT, Portugal, through the grant SFRH/BD/90682/2012. This work was partly funded by FEDER through the COMPETE 2020 Programme and by National funds through FCT Portuguese Foundation for Science and Technology - under the project UID/CTM/50025/2013.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - Biodegradable polyurethanes have been studied as scaffolds for tissue engineering due to their adjustable physico-chemical properties. In this work, we synthesized a biodegradable gelatin-based poly(urethane urea) using polycaprolactone-diol, as soft segment, and isophorone diisocyanate and gelatin from cold water fish skin as hard segment. The synthesis was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance and the influence of the amount of gelatin introduced in the polymer backbone was analyzed by thermal analysis. Gelatin-based poly(urethane urea) electrospun fibrous mats and solvent cast films were then produced and their physico-chemical and biological properties studied. They present an amorphous structure, elastomeric behavior and water contact angles typical of hydrophobic surfaces. Hydrolytic degradation was analyzed in phosphate buffer saline (PBS), lipase and trypsin solutions. No mass changes were detected during 37 days in PBS and trypsin while significant degradation by lipase was observed. Human foetal foreskin fibroblasts were seeded on the fibrous mats and films. Populations were evaluated by colorimetric cell viability assays and morphology by fluorescence imaging. The substrates supported cell adhesion and proliferation. The novel gelatin-based poly(urethane urea) fibrous mats offer attractive physico-chemical and biological properties for soft tissue engineering applications.
AB - Biodegradable polyurethanes have been studied as scaffolds for tissue engineering due to their adjustable physico-chemical properties. In this work, we synthesized a biodegradable gelatin-based poly(urethane urea) using polycaprolactone-diol, as soft segment, and isophorone diisocyanate and gelatin from cold water fish skin as hard segment. The synthesis was confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance and the influence of the amount of gelatin introduced in the polymer backbone was analyzed by thermal analysis. Gelatin-based poly(urethane urea) electrospun fibrous mats and solvent cast films were then produced and their physico-chemical and biological properties studied. They present an amorphous structure, elastomeric behavior and water contact angles typical of hydrophobic surfaces. Hydrolytic degradation was analyzed in phosphate buffer saline (PBS), lipase and trypsin solutions. No mass changes were detected during 37 days in PBS and trypsin while significant degradation by lipase was observed. Human foetal foreskin fibroblasts were seeded on the fibrous mats and films. Populations were evaluated by colorimetric cell viability assays and morphology by fluorescence imaging. The substrates supported cell adhesion and proliferation. The novel gelatin-based poly(urethane urea) fibrous mats offer attractive physico-chemical and biological properties for soft tissue engineering applications.
KW - Biodegradable polyurethane
KW - Electrospinning
KW - Fish gelatin
KW - In vitro tests
KW - Soft tissue engineering
UR - http://www.scopus.com/inward/record.url?scp=85045741872&partnerID=8YFLogxK
U2 - 10.1016/j.eurpolymj.2018.04.005
DO - 10.1016/j.eurpolymj.2018.04.005
M3 - Article
AN - SCOPUS:85045741872
VL - 103
SP - 271
EP - 281
JO - European Polymer Journal
JF - European Polymer Journal
SN - 0014-3057
ER -