Targeting therapy with epirubicin polybutylcyanoacrylate magnetic nanoparticles for transplanted hepatoma in nude mice

Abstract

Objective To observe the effect of epirubicin polybutylcyanoacrylate magnetic nanoparticles (EPI-PBCA-MNPS) on the transplanted hepatoma in nude mice.Methods Human hepatoma cell line Bel-7402 nude mice models were established and divided into 5 groups with each of 10 once gross tumor volume was up to 20-30 mm3:normal saline group (NS),epirubicin group (EPI),epirubicin polybutylcyanoacrylate nanoparticles group (EPI-PBCA-NPS),epirubicin polybutylcyanoacrylate magnetic nanoparticles group (EPI-PBCA-MNPS) and epirubicin polybutylcyanoacrylate magnetic nanoparticles+magnetic field group(EPI-PBCA-MNPS+MF).Except for NS group, the dosage of epirubicin was 0.002 mg/g body weight or 40 μg for intravenous injection.After two-weeks therapy,all nude mice models were executed and the tumor volume and weight were measured so as to calculate the volume inhibition ratio and the weight inhibition ratio.Every tumor specimen was made into pathological section and labelled with serial number for comparing neorobiosis degree in different groups before and after therapy.Results There were statistically difference among the other groups (P 0.05).The two ratios in the EPI-PBCA-MNP+MF group (94.26%,80.82%) were significantly more than those in other groups (P<0.01).The pathological sections demonstrated the most severe tumour neorobiosis in the EPI-PBCA-MNP+MF group.Conclusion With the additional magnetic field,EPI-PBCA-MNPS has significant anticancer effect on human hepatoma nude mice models due to its favourable magnetic targeting. Key words: Epirubicin; Polybutylcyanoacrylate; Magnetic nanoparticles; Hepatocellular carcinoma; Transplanted tumor