The Cytotoxicity Profile of GMO-Chitosan and PLGA
Nanoparticles
Cytotoxicity profile of free cyclopamine-paclitaxel solution,
blank and drug-loaded GMO-chitosan, and PLGA nanoparticles
after 72 h of treatment in DU145, DU145 TXR,
and Wi 26 A4 (C) cells are depicted in Fig. 3. The
percentage survival of DU145 (Fig. 3a), DU145 TXR
(Fig. 3b), and Wi26 VA4 (Fig. 3c) cells on treatment with
cyclopamine-paclitaxel free drug solutions, blank and
drug-loaded GMO-chitosan, as well as PLGA nanoparticles
was studied overtime at various concentrations. Comparing
the LD50 values in DU145 cells, it was observed
that the blank GMO-chitosan was found to show greater
cytotoxicity than the blank PLGA nanoparticles, whereas,
on the other hand, the drug-loaded PLGA nanoparticles
showed greater cytotoxicity than the drug-loaded GMOchitosan
nanoparticles as well as the drug solutions. In all
of the three cell lines tested, the blank GMO-chitosan
nanoparticles were found to be as cytotoxic as drugloaded
ones after 72 h of treatment. Hemolysis assay
was further performed on various treatments, and the
results are shown in Fig. 4. Blank and drug-loaded
GMO-chitosan nanoparticles showed higher percentage
of hemolysis as compared to the other treatments.