Tumor targeting of functionalized lipid nanoparticles: assessment by in vivo fluorescence imaging.
Eur J Pharm Biopharm
; 75(2): 137-47, 2010 Jun.
Article
en En
| MEDLINE
| ID: mdl-20149869
Lipid nanoparticles (LNP) coated by a poly(oxyethylene) polymer have been manufactured from low cost and human use-approved materials, by an easy, robust, and up-scalable process. The incorporation in the formulation of maleimide-grafted surfactants allows the functionalization of the lipid cargos by targeting ligands such as the cRGD peptide binding to alpha(v)beta(3) integrin, a well-known angiogenesis biomarker. LNP are able to encapsulate efficiently lipophilic molecules such as a fluorescent dye, allowing their in vivo tracking using fluorescence imaging. In vitro study on HEK293(beta3) cells over-expressing the alpha(v)beta(3) integrins demonstrates the functionalization, specific targeting, and internalization of cRGD-functionalized LNP in comparison with LNP-cRAD or LNP-OH used as negative controls. Following their intravenous injection in Nude mice, LNP-cRGD can accumulate actively in slow-growing HEK293(beta3) cancer xenografts, leading to tumor over skin fluorescence ratio of 1.53+/-0.07 (n=3) 24h after injection. In another fast-growing tumor model (TS/A-pc), tumor over skin fluorescence ratio is improved (2.60+/-0.48, n=3), but specificity between the different LNP functionalizations is no more observed. The different results obtained for the two tumor models are discussed in terms of active cRGD targeting and/or passive nanoparticle accumulation due to the Enhanced Permeability and Retention effect.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Péptidos Cíclicos
/
Sistemas de Liberación de Medicamentos
/
Integrina alfaVbeta3
/
Nanopartículas
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Female
/
Humans
Idioma:
En
Revista:
Eur J Pharm Biopharm
Asunto de la revista:
FARMACIA
/
FARMACOLOGIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Países Bajos