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表面带活性羧基的新型长循环脂质体的制备和组织分布研究

张宇锋, 张朔, 侯新朴*, 谢蜀生, 王琦   

  1. 1. 北京医科大学药学院物理药学研究室, 北京 100083;
    2. 北京医科大学基础医学院免疫药理研究室, 北京 100083;
    3. 中国原子能研究院氚标记室, 北京 102412
  • 收稿日期:1999-10-12 修回日期:2000-04-20 出版日期:2000-09-15 发布日期:2000-09-15
  • 通讯作者: 侯新朴*

Preparation and Biodistribution In Mice of Long-circulating Liposomes with Active Carboxylic Terminals

Zhang Yufeng, Zhang Shuo, Hou Xinpu*, Xie Shusheng, Wang Qi

  

  1. 1. School of Pharmaceutical Sciences, Beijing Medical University, Beijing 100083;
    2. Department of Immunopharmacology, College of Basic Medical Science, Beijing Medical University, Beijing 100083;
    3. Tritium labeling laboratory, Chinese Atomic Energy Institute, Beijing 102412
  • Received:1999-10-12 Revised:2000-04-20 Online:2000-09-15 Published:2000-09-15
  • Contact: Hou Xinpu*

摘要: 合成和纯化了一个带末端羧基的新的磷脂酰乙醇胺的聚乙二醇衍生物3/4DPPE-PEG3000-COOH。将这个化合物掺入脂质体后, 脂质体在网状内皮系统(肝、脾)的聚集减少, 在血中的循环时间明显延长, 并表现为一级对数线性消除。脂质体表面的活性羧基可以和其它活性分子反应, 这可能为脂质体带来新的功能。

关键词: 脂质体, 活性羧基末端, 聚乙二醇, 长循环

Abstract: A new PE-PEG derivative with an active carboxylic terminal, DPPE-PEG3000-COOH, was synthesized and purified. Its incorporation into small unilamellar liposomes composed of egg phosphatidylcholine and cholesterol conferred the liposomes prolonged circulation in blood and reduced accumulation in the RES, as the traditional methoxy-PEG derivatives of PE displayed. With the active carboxylic groups on the surface, DPPE-PEG3000-COOH liposomes can be linked with some active molecules, which provide liposomes with special functions.

Key words: Liposomes, Liposomes, Active carboxylic terminal, Active carboxylic terminal, Polyethylene glycol (PEG), Polyethylene glycol (PEG), Long-circulating, Long-circulating

Supporting: *Supported by National Natural Science Foundation of China (39770879) and State Laboratory of Intelligent Technology and Systems (Tsinghua).