Formulation development, stability and anticancer efficacy of core-shell cyclodextrin nanocapsules for oral chemotherapy with camptothecin


Unal H., Ozturk N. , BİLENSOY E.

BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY, cilt.11, ss.204-212, 2015 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 11
  • Basım Tarihi: 2015
  • Doi Numarası: 10.3762/bjoc.11.22
  • Dergi Adı: BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
  • Sayfa Sayıları: ss.204-212

Özet

Background: The aim of this study was to design and evaluate hybrid cyclodextrin (CD) nanocapsules intended for the oral delivery of the anticancer agent camptothecin (CPT) in order to maintain drug stability in the body and to improve its eventual bioavailability. For this reason, an amphiphilic cyclodextrin (CD) derivative per-modified on the primary face 6OCAPRO was used as core molecule to form nanocapsules with the nanoprecipitation technique. Nanocapsules were further coated with the cationic polymer chitosan to improve the cellular uptake and interaction with biological membranes through positive surface charge. Nanocapsules were evaluated for their in vitro characteristics such as particle size, zeta potential, drug loading and release profiles followed by cell culture studies with the MCF-7 and Caco-2 cell line evaluating their anticancer efficacy and permeability. The CD nanocapsules were imaged by scanning electron microscopy (SEM). The concentration of CPT entrapped in nanocapsules was determined by reversed phase HPLC. The in vitro release study of CPT was performed with a dialysis bag method under sink conditions mimicking the gastric and intestinal pH. The hydrolytic stability of CPT in nanocapsules was investigated in simulated gastric and intestinal fluids (SGF, SIF).