槲皮素PLGA-TPGS纳米粒对小鼠肝癌异位实体瘤治疗效果的研究

摘要

目的 考察槲皮素PLGA-TPGS纳米粒(QPTN)在体内对荷腹水型肝癌高淋巴道转移细胞HCa-F小鼠异位移植实体瘤的治疗效果.方法 建立荷HCa-F肝癌细胞小鼠模型后,随机分为阴性对照组、空白纳米粒组、5-氟尿嘧啶溶液(FS)组、槲皮素溶液(QTS)组、槲皮素PLGA纳米粒(QPN)组和QPTN组.尾静脉给药,每2d1次,连续给药20 d后处死小鼠,剥离肿瘤,称质量,测量肿瘤体积,根据公式计算肿瘤体积增长量和抑瘤率;行HE染色观察肿瘤,全面评价QPTN对荷瘤小鼠的治疗效果.结果 小鼠体内给药10次后,QPTN组、QPN组、FS组的肿瘤体积增长量与阴性对照组相比明显减小(P＜0.05或P＜ 0.01),QPTN组抑瘤率(59.07％)明显高于QTS组(23.94％)、FS组(35.14％)和QPN组(46.14％).HE染色结果也显示QPTN组对小鼠肿瘤的治疗效果最明显.结论 与QPN、QTS和FS相比,QPTN对荷HCa-F肝癌细胞小鼠异位实体瘤具有较好的治疗效果.%Objective To investigate the therapeutic effects of Quercetin (QT)-loaded PLGA-TPGS nanoparticles (QPTN) on solid tumor-bearing mice with HCa-F hepatocarcinoma in vivo.Methods The model of HCa-F hepatocarcinoma solid tumor-bearing mice was established by implanting HCa-F cells into 48 mice.The mice were divided into 6 groups randomly:the negative control,empty PLGA-TPGS nanoparticles,5-Fluorouracil solutions (FS),Quercetin solutions (QTS),QT-loaded PLGA nanoparticles (QPN),and QPTN groups.Each group was treated using tail vein twice a day for 20 days;then,all mice were sacrificed.The increment tumor volumes and tumor growth inhibition rate were counted.Then,tumor specimens were prepared for hematoxylin & eosin (HE) staining and observed under a microscope.Results The results showed that the increment tumor volumes of mice in the QPTN,QPN,and FS groups were significantly smaller than that in the negative control group (P ＜ 0.05 or P ＜ 0.01).The tumor growth inhibition rate of the QPTN group was 59.07％,which was much higher than that of the QTS group (23.94％),the FS group (35.14％),and the QPN group (46.14％).The results of the HE staining on the tumor sections also indicated that the QPTN group showed a better therapeutic outcome compared to the other groups.Conclusion The QPTN has a better therapeutic effect on the model of solid tumor using HCa-F cells-bearing mice than the QPN,QTS,and FS.