Mechanically reinforced hydrogel vehicle delivering angiogenic factor for beta cell therapy.
J Colloid Interface Sci
; 667: 54-63, 2024 Aug.
Article
em En
| MEDLINE
| ID: mdl-38615623
ABSTRACT
Type 1 diabetes mellitus (T1DM) is a chronic disease affecting millions worldwide. Insulin therapy is currently the golden standard for treating T1DM; however, it does not restore the normal glycaemic balance entirely, which increases the risk of secondary complications. Beta-cell therapy may be a possible way of curing T1DM and has already shown promising results in the clinic. However, low retention rates, poor cell survival, and limited therapeutic potential are ongoing challenges, thus increasing the need for better cell encapsulation devices. This study aimed to develop a mechanically reinforced vascular endothelial growth factor (VEGF)-delivering encapsulation device suitable for beta cell encapsulation and transplantation. Poly(l-lactide-co-ε-caprolactone) (PLCL)/gelatin methacryloyl (GelMA)/alginate coaxial nanofibres were produced using electrospinning and embedded in an alginate hydrogel. The encapsulation device was physically and biologically characterised and was found to be suitable for INS-1E beta cell encapsulation, vascularization, and transplantation in terms of its biocompatibility, porosity, swelling ratio and mechanical properties. Lastly, VEGF was incorporated into the hydrogel and the release kinetics and functional studies revealed a sustained release of bioactive VEGF for at least 14 days, making the modified alginate system a promising candidate for improving the beta cell survival after transplantation.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hidrogéis
/
Fator A de Crescimento do Endotélio Vascular
/
Alginatos
/
Células Secretoras de Insulina
/
Gelatina
Limite:
Animals
/
Humans
Idioma:
En
Revista:
J Colloid Interface Sci
/
J. colloid interface sci
/
Journal of colloid and interface science
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Dinamarca
País de publicação:
Estados Unidos