Comparison of the impact of preservation methods on amniotic membrane properties for tissue engineering applications
DELMOND, Samantha
Plateforme Technologique d'Innovation Biomédicale [PTIB]
Bioingénierie tissulaire [BIOTIS]
Plateforme Technologique d'Innovation Biomédicale [PTIB]
Bioingénierie tissulaire [BIOTIS]
DURAND, Marlène
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Bioingénierie tissulaire [BIOTIS]
< Réduire
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Bioingénierie tissulaire [BIOTIS]
Langue
en
Article de revue
Ce document a été publié dans
Materials Science and Engineering: C. 2019-11, vol. 104, p. 109903
Elsevier
Résumé en anglais
Human amniotic membrane (hAM) is considered as an attractive biological scaffold for tissue engineering. For this application, hAM has been mainly processed using cryopreservation, lyophilization and/or decellularization. ...Lire la suite >
Human amniotic membrane (hAM) is considered as an attractive biological scaffold for tissue engineering. For this application, hAM has been mainly processed using cryopreservation, lyophilization and/or decellularization. However, no study has formally compared the influence of these treatments on hAM properties. The aim of this study was to develop a new decellularization-preservation process of hAM, and to compare it with other conventional treatments (fresh, cryopreserved and lyophilized). The hAM was decellularized (D-hAM) using an enzymatic method followed by a detergent decellularization method, and was then lyophilized and gamma-sterilized. Decellularization was assessed using DNA staining and quantification. D-hAM was compared to fresh (F-hAM), cryopreserved (C-hAM) and lyophilized/gamma-sterilized (L-hAM) hAM. Their cytotoxicity on human bone marrow mesenchymal stem cells (hBMSCs) and their biocompatibility in a rat subcutaneous model were also evaluated. The protocol was effective as judged by the absence of nuclei staining and the residual DNA lower than 50 ng/mg. Histological staining showed a disruption of the D-hAM architecture, and its thickness was 84% lower than fresh hAM (p < 0.001). Despite this, the labeling of type IV and type V collagen, elastin and laminin were preserved on D-hAM. Maximal force before rupture of D-hAM was 92% higher than C-hAM and L-hAM (p < 0.01), and D-hAM was 37% more stretchable than F-hAM (p < 0.05). None of the four hAM were cytotoxic, and D-hAM was the most suitable scaffold for hBMSCs proliferation. Finally, D-hAM was well integrated in vivo. In conclusion, this new hAM decellularization process appears promising for tissue engineering applications.< Réduire
Mots clés en anglais
Acellular scaffold
Amniotic membrane
Cryopreservation
Freeze-drying
Processed amnion
Rat
in vivo biocompatibility
Origine
Importé de halUnités de recherche