Abstract��OBJECTIVE To prepare the curcumin-loaded amphiphilic star-shaped polyester nanoparticles(Cur-NPs) and evaluate its physicochemical property, toxicity and release behavior in vitro. METHODS Poly(pentaerythrotol)-poly (��-Caprolactone)(abbreviated as PET-PCL), a new amphiphilic star-shaped poly ester material, as drug carrier was successfully synthesized by ring-opening polymerization. The toxicity of PET-PCL was determined by MTT method. Drug-loading nanoparticles were prepared by microchannel interface precipitation, and the optimal prescription was screened by single factor experiment. The particle size and the particle dispersion index was measured by dynamic light scattering(DLS) techniques. The encapsulation efficiency and drug loading content were determined by UV spectrophotometry. The in vitro release behavior was investigated by dynamic dialysis. RESULTS The optimal preparation for nanoparticles was listed as followswater flow rate was 0.5 mL��min-1, lipid phase flow rate was 0.5 mL��min-1, aqueous phase concentration was 1 mg��mL-1, lipid phase concentration was 6.0 mg��mL-1, and drug concentration was 0.6 mg��mL-1. The particle size was (180.3��4.05) nm, the Zeta potential was (-12.1��1.04)mV; drug encapsulation efficiency was (90.12��0.824)%; drug loading content was (4.40��0.080)%; the amount of cumulated drug released in 96 h was (72.89��3.001)%. Survival rate of L929 cells with PET-PCL were (81.05��1.223)%. CONCLUSION The curcumin-loaded amphiphilic star-shaped polyester nanoparticles prepared by this method are simple and feasible, and have a better controlled release property, have potential application value in the field of drug delivery.
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2018, Vol. 53 
