New Chitosan Nanospheres for the Delivery of 5-Fluorouracil: Preparation, Characterization and in vitro Studies

Title:New Chitosan Nanospheres for the Delivery of 5-Fluorouracil: Preparation, Characterization and in vitro Studies

Volume: 11 Issue: 2

Author(s): Roberta Cavalli, Federica Leone, Rosalba Minelli, Roberto Fantozzi and Chiara Dianzani

Affiliation:

Keywords: Chitosan, Drug delivery systems, 5-fluorouracil, Nanospheres, Sustained release.

Abstract: The aim of this work was to develop new chitosan nanospheres for the delivery of 5-fluorouracil (5-FU). Drug loaded nanospheres were prepared using a technique derived from a combination of coacervation and emulsion droplet coalescence methods. The size and morphology of nanospheres were characterized by laser light scattering and transmission electron microscopy. The 5-FU interaction with chitosan nanospheres was investigated by DSC analysis and FT-IR spectroscopy. The in vitro release was studied by dialysis bag technique. Cytotoxicity of 5-FU loaded chitosan nanospheres was evaluated in vitro on HT29 and PC-3 cell lines. The effects of 5-FU loaded chitosan nanospheres on adhesion of tumor cells to human umbilical vein endothelial cells (HUVEC) were also investigated. 5-FU loaded chitosan nanospheres appeared with a spherical shape, with a mean diameter of about 200 nm and a negative zeta potential of about - 6.0 mV. The successful interaction between drug and chitosan nanosphere matrix was demonstrated by both DSC and FT-IR analyses. The quantitative determination of 5-FU was assayed by UV-Vis analysis. The encapsulation efficiency of 5-FU content was about 70%. A kinetic study of in vitro release demonstrated that the percentages of 5-FU delivered from nanospheres was approx. 10% after 3 hours. The in vitro studies showed that 5-FU loaded nanospheres were effective in reducing tumor cell proliferation in a time- and concentration-dependent manner. 5-FU nanospheres were also able to inhibit both HT29 and PC-3 adhesion to HUVEC after 48 hours of treatment.

Cite this article as:

Cavalli Roberta, Leone Federica, Minelli Rosalba, Fantozzi Roberto and Dianzani Chiara, New Chitosan Nanospheres for the Delivery of 5-Fluorouracil: Preparation, Characterization and in vitro Studies, Current Drug Delivery 2014; 11 (2) . https://dx.doi.org/10.2174/1567201811666140206103609