Solubility enhancement and in vitro evaluation of PEG-b-PLA micelles as nanocarrier of semi-synthetic andrographolide analogue for cholangiocarcinoma chemotherapy.
Pharm Dev Technol
; 21(4): 437-44, 2016.
Article
en En
| MEDLINE
| ID: mdl-25738423
ABSTRACT
BACKGROUND:
Semi-synthetic andrographolide analogue (19-triphenylmethyl ether andrographolide, AG 050) is a C-19 substituted andrographolide which is the major constituent from Andrographis Paniculata Nees (Acanthaceae). The analogue has previously been reported to be highly cytotoxic against several cancer cell lines. Nevertheless, its poor water solubility limits clinical applications of this compound.OBJECTIVES:
To improve the aqueous solubility and bioavailability of AG 050 by protonation and encapsulation in poly(ethylene glycol)-b-poly(d,l-lactide) (PEG-b-PLA) polymeric micelles. MATERIALS ANDMETHODS:
PEG-b-PLA micelle was employed as a nanocarrier for AG 050. The physicochemical properties and in vitro cytotoxicity against cholangiocarcinoma (CCA) (KKU-M213) cell line were done in this study. RESULT ANDDISCUSSION:
Hydrochloride salt of AG 050 (AG 050-P) greatly enhanced the solubility of this compound (15-fold). PEG-b-PLA was able to encapsulate AG 050-P in hydrophobic core with a significant increase in the amount of AG 050-P in aqueous solution (280-fold). Film sonication method provided greater results in drug-loading study as compared to micelles via solvent evaporation. In addition, the encapsulated AG 050-P exhibited sustained release pattern and excellent cytotoxicity activity against KKU-M213 with IC50 of 3.33 µM.CONCLUSION:
Nanoencapsulation of AG 050-P implicated its potential development for clinical use in CCA treatment.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Polietilenglicoles
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Neoplasias de los Conductos Biliares
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Portadores de Fármacos
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Colangiocarcinoma
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Diterpenos
/
Lactatos
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Antineoplásicos Fitogénicos
Límite:
Humans
Idioma:
En
Año:
2016
Tipo del documento:
Article