Decellularised tissues obtained by a CO2-philic detergent and supercritical CO2.

Decellularised tissues obtained by a CO2-philic detergent and supercritical CO2. Eur Cell Mater. 2018 Sep 04;36:81-95 Authors: Antons J, Marascio MG, Aeberhard P, Weissenberger G, Hirt-Burri N, Applegate LA, Bourban PE, Pioletti DP Abstract Tissue decellularisation has gained much attention in regenerative medicine as an alternative to synthetic materials. In decellularised tissues, biological cues can be maintained and provide cellular environments still unmet by synthetic materials. Supercritical CO2 (scCO2 ) has recently emerged as a promising alternative decellularisation technique to aggressive detergents; in addition, scCO2 provides innate sterilisation. However, to date, decellularisation with scCO2 is limited to only a few tissue types with low cellular density. In the current study, a scCO2 technique to decellularise high density tissues, including articular cartilage, tendon and skin, was developed. Results showed that most of the cellular material was removed, while the sample structure and biocompatibility was preserved. The DNA content was reduced in cartilage, tendon and skin as compared to the native tissue. The treatment did not affect the initial tendon elastic modulus [reduced from 126.35 ± 9.79 MPa to 113.48 ± 8.48 MPa (p 〉 0.05)], while it reduced the cartilage one [from 12.06 ± 2.14 MPa to 1.17 ± 0.34 MPa (p 〈 0.0001)]. Interestingly, cell adhesion molecules such as fibronectin and laminin were still pres...
Source: European Cells and Materials - Category: Cytology Tags: Eur Cell Mater Source Type: research