长春碱亲水基修饰阳离子脂质体对荷瘤小鼠的抗肿瘤作用研究

摘要

目的:研究长春碱亲水基修饰阳离子脂质体对荷瘤小鼠的抗肿瘤作用.方法:腋下接种S180腹水瘤小鼠黄色腹水复制荷瘤模型.将荷瘤小鼠随机分为模型组、硫酸长春碱注射液组、长春碱普通脂质体组、长春碱亲水基修饰脂质体组、长春碱阳离子脂质体组和长春碱亲水基修饰阳离子脂质体组,分别记为A、B、C、D、E、F组,每组18只.A组小鼠尾iv生理盐水,其余各组小鼠尾iv长春碱(给药剂量为1.5 mg/kg),每隔1日给药1次,连续给药5次.以小鼠生存状态、生存时间、瘤体积、瘤质量及组织病理切片为指标比较长春碱不同制剂的抗肿瘤作用.结果:与A、B、C、D、E组比较,F组小鼠更活跃、生存时间更长、瘤体积更小、瘤质量更轻,差异具有统计学意义(P<0.05);组织病理切片显示,F组小鼠肿瘤细胞核凝固坏死、核破碎溶解.结论:长春碱亲水基修饰阳离子脂质体有明显的抗肿瘤作用,且作用优于上述长春碱的其他制剂.%OBJECTIVE:To study the anti-tumor effects of Vinblastine (VLB) hydrophilic group modified cationic liposomes in tumor-bearing mice. METHODS:Tumor-bearing model were induced by inoculating yellow ascites of S180 ascites tumor mice. Tumor-bearing mice were randomly divided into model group,VLB sulfate injection group,VLB liposomes group,VLB hydrophil-ic group modified liposomes group,VLB cationic liposomes group and VLB hydrophilic group modified cationic liposomes group, i.e. group A,B,C,D,E and F,with 18 mice in each group. Group A was given normal saline intravenously via mice tail,other groups were given VLB 1.5 mg/kg every 2 days for consecutive 5 times. The anti-tumor effects of different VLB preparations were compared,using living conditions,survival time,tumor volume and weight,and tissue pathological section as indexes. RE-SULTS:Compared with group A,B,C,D and E,the mice of group F were more active,and had longer survival time,smaller tumor volume and lighter tumor weight,with statistical significance(P<0.05). The tissue pathological section of mice in group F indicated that coagulation necrosis,disintegration,and dissolution of tumor cell nucleus. CONCLUSIONS:VLB hydrophilic group modified cationic liposomes have obvious anti-tumor effect,which are better than other VLB preparations.