摘要
基于国内外对甘草次酸配体介导主动肝靶向脂质体的研究情况,该文主要对以甘草次酸为母核的肝靶向配体18-GA-Gly修饰的脂质体的肝靶向效果进行研究。采用薄膜分散-高压乳匀法制备18-GA-Gly配体介导的丹参酚酸B-丹参酮ⅡA脂质体及未修饰配体的脂质体,考察2种脂质体的制剂学性质,考察粒径、电位、包封率和配体结合率;尾静脉给药后不同时间点获取血浆样本以及小鼠心、肝、脾、肺、肾组织样本,UPLC测定各样本中丹参酚酸B(Sal B)和丹参酮IIA(TSN)含量,评价18-GA-Gly配体的肝靶向效果。结果显示脂质体Gly-TS-Lip和TS-Lip的粒径、电位、包封率、配体结合率基本符合要求;体内靶向性考察结果显示Gly-TS-Lip组脂质体与TS-Lip组脂质体血浆数据无显著性差别;甘草次酸衍生物配体18-GA-Gly介导脂质体可以增加Sal B和TSN在肝组织的峰浓度,但并未显示明显的肝靶向效果。
Based on the research of active liver targeting liposomes mediated by glycyrrhetinic acid ligand at home and abroad, this paper focuses on the liver targeting effect of liposomes mediated with 18-GA-Gly, a kind of glycyrrhetinic acid ligand, salvianolic acid B（ Sal B）-tanshinone 1I A （TSN）liposomes mediated by 18-GA-Gly as well as the liposomes with unmodified ligands were prepared by film dispersion-high pressure homogenization method, and then the particle size, potential, encapsulation efficiency and ligand binding rate were detected. Plasma samples of the heart, liver, spleen, lung and kidney tissues were taken at different time points after tail vein injections. The contents of Sal B and TSN in each sample were determined with UPLC methods and the liver targeting effect of 18- GA-Gly ligands was evaluated. The results showed that the particle size, potential, encapsulation efficiency and ligand binding rate met the basic requirements; in vivo targeting investigation results showed no difference between GLY-TS-Lip group and TS-Lip group. The liposomes mediated by glycyrrhetinic acid derivative ligand 18-GA-Gly can increase the peak concentration of Sal B and TSN in liver, but showed no significant liver targeting effect.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2017年第21期4120-4126,共7页
China Journal of Chinese Materia Medica
关键词
甘草次酸衍生物
脂质体
主动肝靶向
靶向系数
丹酚酸B
丹参酮ⅡA
glycyrrhetinic acid derivatives
liposomes
active liver targeting
targeting coefficient
salvianolic acid B
tanshinoneⅡA
作者简介
[通信作者]王秀丽，副研究员，博士，研究方向为中药复方及新药研发，E-mail：Lnwangxiuli@163．com.;李耿，博士，研究方向为中药质量研究．E-mail：13810507641@163．com.
