Abstract
Chemotherapeutic agents with different anticancer mechanisms could enhance therapeutic effect in cancer therapy by their combined application. In this study, redox-sensitive prodrug nanoparticles based on Xyl-SS-Cur conjugate were developed for co-delivery of curcumin and 5-FU in cancer therapy. The Xyl-SS-Cur conjugate was synthesized via covalent conjugation of curcumin to xylan through a disulphide (-S-S-) linkage. The Xyl-SS-Cur conjugate could self-assemble in aqueous medium into nanoparticles and the lipophilic 5-fluorouracil-stearic acid (5-FUSA) prodrug was encapsulated into the hydrophobic core of Xyl-SS-Cur NPs through dialysis membrane method. The obtained Xyl-SS-Cur/5-FUSA NPs had an appropriate size (∼217 ± 2.52 nm), high drug loading of curcumin (∼ 31.4 wt%) and 5-FUSA (∼ 11.8 wt%) and high stability. The interaction of Xyl-SS-Cur/5-FUSA NPs with blood components was investigated by hemolysis study. The cytotoxicity study demonstrated that Xyl-SS-Cur/5-FUSA NPs induced higher cytotoxicity than free drugs against the Human colorectal cancer cells (HT-29, HCT-15). These results indicate that Xyl-SS-Cur/5-FUSA NPs can serve as a promising drug delivery system in cancer therapy.
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