Evaluation of tissue integration of injectable, cell-laden hydrogels of cocultures of mesenchymal stem cells and articular chondrocytes with an ex vivo cartilage explant model.
Biotechnol Bioeng
; 118(8): 2958-2966, 2021 08.
Article
em En
| MEDLINE
| ID: mdl-33913514
ABSTRACT
This study investigated the chondrogenic activity of encapsulated mesenchymal stem cells (MSCs) and articular chondrocytes (ACs) and its impact on the mechanical properties of injectable poly(N-isopropylacrylamide)-based dual-network hydrogels loaded with poly( l -lysine) (PLL). To this effect, an ex vivo study model was employed to assess the behavior of the injected hydrogels-specifically, their surface stiffness and integration strength with the surrounding cartilage. The highest chondrogenic activity was observed from AC-encapsulated hydrogels, while the effect of PLL on MSC chondrogenesis was not apparent from biochemical analyses. Mechanical testing showed that there were no significant differences in either surface stiffness or integration strength among the different study groups. Altogether, the results suggest that the ex vivo model can allow further understanding of the relationship between biochemical changes within the hydrogel and their impact on the hydrogel's mechanical properties.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cartilagem Articular
/
Diferenciação Celular
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Condrócitos
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Hidrogéis
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Condrogênese
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Engenharia Tecidual
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Células-Tronco Mesenquimais
Tipo de estudo:
Evaluation_studies
Limite:
Animals
Idioma:
En
Revista:
Biotechnol Bioeng
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos