Abstract
Anticancer drugs are always restricted as lacking of tumor cell-selective targeting. In this paper, to achieve double effects of targeting and decreasing the drug toxicity, the folate (FA) -O-carboxymethyl chitosan (O-CMC) and the methotrexate (MTX) encapsulated FA-O-CMC/CaCl2 nanoparticles were prepared. The numbers of FA conjugated to O-CMC, particle size, surface morphology, encapsulation efficiency and loading efficiency of the obtained nanoparticles were characterized. The results showed that the FA-O-CMC possessing targeting ability was achieved. MTX had been successfully loaded into the nanoparticles. The prepared nanoparticles were spherical in morphology with an average size of 322 nm
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