Abstract
Encapsulating anticancer drugs to synthetic polymer is a promising approach to improve the efficiency and reduce the side effects of anticancer drugs. In this study, novel chitosan derivatives with polyamidoamine moieties (CS-PAMAM) were synthesized and characterized by morphology, particle size, and zeta potential. Then the anticancer drug–methotrexate-encapsulated CS-PAMAM was prepared by hydrophobic–hydrophilic interactions. The drug release assay showed that the amount of the methotrexate release from CS-PAMAM was pH depended. Meanwhile, the cell viability assay illustrated that CS-PAMAM was suitable for the drug delivery because of its low cytotoxicity on cells. Moreover, our results showed that the CS-PAMAM could significantly improve the cytotoxicity of free methotrexate on A549 cells. These results demonstrate that CS-PAMAM may provide a suitable platform for the water-insoluble drug delivery.
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