Chitosan-coated PLGA nanoparticles: a sustained drug release strategy for cell cultures.
Colloids Surf B Biointerfaces
; 103: 310-7, 2013 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-23261553
ABSTRACT
A recently patented one-step methodology was used for the formulation of chitosan (CS) coated polylactic-co-glycolic acid (PLGA) nanoparticles containing dexamethasone (DXM) as a model drug. SEM investigations showed that nanoparticles (NPs) were spherical in shape with smooth surface. CS coating switched NPs ζ-potential from negative to positive, without modifying particle size distribution. Moreover, CS coating allowed a significant modulation of in vitro drug release, providing a sustained drug delivery in cultured cells. The uptake of fluorescent CS-coated PLGA NPs by hepatocytes (C3A) and fibroblasts (3T6) as well as the fate of internalized NPs were investigated by confocal microscopy. 3T6 and C3A cells were treated with DXM-loaded NPs and experiments were addressed to analyze the specific cell response to DXM, in order to evaluate its functional efficiency in comparison with conventional addition to culture medium. CS-coating of DXM loaded PLGA NPs allowed their uptake by cultured cells without inducing cytotoxicity.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ácido Poliglicólico
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Ácido Láctico
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Materiais Revestidos Biocompatíveis
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Preparações de Ação Retardada
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Quitosana
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Nanopartículas
Tipo de estudo:
Prognostic_studies
Limite:
Animals
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Humans
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article