Naslov
Characterization of chitosan-based scaffolds seeded with sheep nasal chondrocytes for cartilage tissue engineering

Autori
Rogina, Anamarija ; Pušić, Maja ; Štefan, Lucija ; Ivković, Alan ; Urlić, Inga ; Ivanković, Marica ; Ivanković, Hrvoje

Izvornik
Annals of biomedical engineering (0090-6964) 49 (2021), 6; 1572-1586

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
chitosan ; biodegradation ; fibronectin ; nasal chondrocytes ; hyaline cartilage

Sažetak
The treatment of cartilage defect remains a challenging issue in clinical practice. Chitosan- based materials have been recognized as a suitable microenvironment for chondrocyte adhesion, proliferation and differentiation forming articular cartilage. The use of nasal chondrocytes to culture articular cartilage on an appropriate scaffold emerged as a promising novel strategy for cartilage regeneration. Beside excellent properties, chitosan lacks in biological activity, such as RGD-sequences. In this work, we have prepared pure and protein- modified chitosan scaffolds of different deacetylation degree and molecular weight as platforms for the culture of sheep nasal chondrocytes. Fibronectin (FN) was chosen as an adhesive protein for the improvement of chitosan bioactivity. Prepared scaffolds were characterised in terms of microstructure, physical and biodegradation properties, while FN interactions with different chitosans were investigated through adsorption–desorption studies. The results indicated faster enzymatic degradation of chitosan scaffolds with lower deacetylation degree, while better FN interactions with material were achieved on chitosan with higher number of amine groups. Histological and immunohistochemical analysis of in vitro engineered cartilage grafts showed presence of hyaline cartilage produced by nasal chondrocytes.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija, Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

POVEZANOST RADA