Nanoparticles of two chitosan derivatives - N-succinyl-chitosan (SC) and N-glutaryl-chitosan (GC) - were developed as passive transport systems for taxanes (paclitaxel and docetaxel) using an ionic gelation technique with sodium tripolyphosphate. These nanoparticles had an apparent hydrodynamic diameter of 300-350nm, a ζ-potential of 25-31mV, an encapsulation efficiency of 21-26%, and a drug loading efficiency of 6-13%. DLS and SLS analysis shows that the nanoparticles have a unimodal size distribution and spherical form. Drug release kinetics of the taxane-loaded nanoparticles demonstrates that more than 50% of the loaded taxane could be released upon the degradation of the nanoparticles after targeted delivery. The drug-loaded SC and GC nanoparticles exhibit high cytotoxicity towards AGS cancer cell lines and their antitumor activity is consequently enhanced when compared with free taxanes.
Y. A. Skorik, Golyshev, A. A., Kritchenkov, A. S., Gasilova, E. R., Poshina, D. N., Sivaram, A. J., and Dr. Jayakumar Rangasamy, “Development of drug delivery systems for taxanes using ionic gelation of carboxyacyl derivatives of chitosan.”, Carbohydrate polymers, vol. 162, pp. 49-55, 2017.