青藤碱PLGA-TPGS纳米粒对HCa-F细胞在小鼠淋巴管内增殖及异位移植瘤的抑制作用研究

摘要

目的：研究青藤碱乳酸羟基乙酸共聚物-水溶性维生素E（PLGA-TPGS）纳米粒（SPTN）对小鼠腹水型肝癌高淋巴管转移细胞HCa-F在小鼠淋巴管内增殖及异位移植瘤的抑制作用。方法：将HCa-F细胞悬液分别加入生理盐水、5-氟尿嘧啶溶液（FS）、青藤碱溶液（SS）、青藤碱PLGA纳米粒（SPN）和SPTN，使终质量浓度均为80μg/ml，采用羧基荧光素琥珀酰亚胺酯（CFSE）标记；经小鼠一侧足垫注射各细胞悬液50μl，每组15只，分别于3、6、9、12、24 h用荧光倒置显微镜观察上述悬液对HCa-F细胞在小鼠体内淋巴管内增殖的抑制作用。取小鼠分为正常对照组、空白PLGA-TPGS纳米粒（EPTN）组、生理盐水组、SPTN组、SPN组、SS组和FS组，每组10只，后6组小鼠建立荷HCa-F细胞的肝癌异位移植瘤模型，尾iv相应药物15 mg/kg，每日1次，连续给药10 d；检测血清中丙氨酸转氨酶（ALT）、天门冬氨酸转氨酶（AST）、γ-谷氨酰转肽酶（γ-GT）、白蛋白（ALB）和总胆红素（TBIL）的含量；取出实体瘤，称量瘤质量和瘤体积，计算抑瘤率。结果：对HCa-F细胞增殖的抑制作用强弱依次为SPTN＞SPN＞FS＞SS＞生理盐水。与生理盐水组比较，SPTN组、SPN组、SS组和FS组小鼠血清中ALT、AST、γ-GT、TBIL水平降低，ALB水平升高（P＜0.05）；SPTN组、SPN组和FS组小鼠的瘤体积增长量和瘤质量明显降低（P＜0.05），抑瘤率依次为49.62％、40.53％、33.90％。结论：SPTN可抑制HCa-F细胞在小鼠淋巴管内的增殖，能改善荷HCa-F细胞小鼠肝癌异位移植瘤，且效果优于SPN和FS。%OBJECTIVE:To study the inhibitory effects of sinomenine(SIN)-loaded polylactic-co-glycolic acid-D-α-tocopherol polyethylene glycol 1000 succinate(PLGA-TPGS)nanoparticles(SPTN)on the proliferation of HCa-F cells in lymph tubes and ec-topic transplantation tumors in mice. METHODS:HCa-F cell suspension were incubated with normal saline,5-fluorouracil(FS), sinomenine solutions (SS),sinomenine PLGA nanoparticles (SPN) and SPTN,with concentration of 80 μg/ml. The cells were marked with CFSE,and then were injected with suspension 50 μl via one footpad of mice. Inhibitory effect of above suspensions on the proliferation of HCa-F in lymph tubes of mice was observed by fluorescence inverted microscope at 3,6,9,12,24 h(n=15). Mice were divided into normal control group,blank PLGA-TPGS nanoparticles (EPTN) group,normal saline group,SPTN group,SPN group,SS group and FS group with 10 mice in each group. The latter 5 groups were injected with relevant medicine 15 mg/kg,once a day,via tail vein for consecutive 10 days after the model of HCa-F cells-bearing ectopic transplantation tumor mice was established. The serum content of ALT,AST,γ-glutamyltransferase(γ-GT),ALB and T-BIL were determined;solid tu-mors were taken,measured and weighed,and the inhibitory rate of tumor was also calculated. RESULTS:The inhibitory effect of above solution on the proliferation of HCa-F cells in descending order was as follows:SPTN>SPN>FS>SS>normal saline. Com-pared with normal saline group,the serum levels of ALT,AST,γ-GT and TBIL of SPTN group,SPN group,SS group and FS group decreased,while ALB level increased(P<0.05);the amount of tumor volume increase and tumor weight in SPTN group, SPN group and FS group decreased significantly (P<0.05). The inhibitory rate of tumor in 3 groups were 49.62%,40.53% and 33.90%. CONCLUSIONS:SPTN can inhibit the proliferation of HCa-F cells in lymph tubes of mice,and can improve HCa-F cells-bearing ectopic transplantation tumor in mice. It is better than SPN and FS.