Controlled Exposure of Bioactive Growth Factor in 3D Amyloid Hydrogel for Stem Cells Differentiation.
Adv Healthc Mater
; 6(18)2017 Sep.
Article
en En
| MEDLINE
| ID: mdl-28736995
ABSTRACT
Amyloid based hydrogels can mimic the extracellular matrix and serve as matrices for tissue engineering both in vitro and in vivo. A pH responsive self-assembled amyloid hydrogel system is used to encapsulate various growth factors for driving stem cell differentiation toward neuronal lineage. Diffusion studies with fluorescence recovery after photobleaching and bulk release with the model protein fluorescein isothiocyanate-bovine serum albumin show that encapsulated protein molecules can be released in a sustained fashion from the hydrogel over a considerable period of time (30 d). Moreover, by modulating the porosity of the hydrogel by the simple addition of salt, the encapsulated protein molecules can be retained for a longer period of time within the hydrogel. Mesenchymal stem cells, when cultured in 3D amyloid hydrogels with growth factors fibroblast growth factor 8 and sonic hedgehog, show more neuron specific differentiation as compared to hydrogel alone. This higher differentiation potential of growth factor encapsulated amyloid hydrogels can be due to concomitant exposure of cells to biomechanical as well as biochemical cues during the course of differentiation. The present study suggests that amyloid based hydrogel can be exploited for controlled growth factor delivery as well as directed stem cell differentiation to neuron.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Diferenciación Celular
/
Hidrogel de Polietilenoglicol-Dimetacrilato
/
Péptidos y Proteínas de Señalización Intercelular
/
Amiloide
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Adv Healthc Mater
Año:
2017
Tipo del documento:
Article
País de afiliación:
India