Two kinds of paclitaxel（PTX） conjugate micelles,of which one contained 25%（mass fraction） PTX [M（PTX）] and the other contained 22.5%（mass fraction） of PTX and 1.4%（mass fraction） of folate（FA）[FA-M（PTX）],were prepared for cell apoptosis and anti-tumor activity evaluation on U14 cervical cancer mouse models in comparison with 0.9%（mass fraction） saline（control） and equivalent Taxol.Seven days after tail intravenous injection of the drugs,the mice were sacrificed to measure the tumor masses.The average tumor masses were 4.26,2.89,2.63,and 2.17 g for the control,Taxol,M（PTX） and FA-M（PTX） groups,respectively.The inhibition rates of tumor growth calculated for the three drug groups were 32%,38% and 49%,respectively.Flow cytometry（FC） analysis and terminal deoxynucleotidyl transferase（TdT）-mediated deoxyuridine triphosphate（dUTP） nick end labeling（TUNEL） assay were conducted on the cancer tissues.The cell apoptosis rates based on the FC data and the TUNEL data were 20%,31%,37%,42%,and 10%,22%,26%,34%,respectively,both showing statistically significant differences（P〈0.05） between three drug groups and the control group,and between the FA-M（PTX） group and the other two drug groups.In conclusion,the composite FA-M（PTX） micelles can be used for U14 cervical cancer treatment.
