申请人:Gwangju Institute of Science and Technology
公开号:EP2082734A2
公开(公告)日:2009-07-29
The present invention relates to a process of preparing a biocompatible temperature-sensitive nano-carrier, which comprises the steps of (a) preparing a polymer dispersion comprising a water-soluble biocompatible polymer with photo-crosslinkable functional group(s), (b) preparing a polymer-initiator solution by adding an initiator to the polymer dispersion, and (c) preparing the nano-carrier by irradiating light onto the polymer-initiator solution, wherein the average diameter of the nano-carrier changes depending on temperature, and also relates to a temperature-sensitive nano-carrier. Nano-carriers of the present invention are temperature-sensitive, and their average diameter and pore size reversibly change in response to temperature change. In an embodiment of the present invention, nano-carriers can be prepared via a one-pot single-phase synthesis. A process of the present invention overcomes the conventional problems such as the use of organic solvent, complicated preparation steps, a relatively high manufacture cost and a low loading efficiency. Moreover, a process of the present invention can ensure the stability of drugs without necessitating high-speed homogenization or ultrasonification generally carried out in the conventional process.
本发明涉及一种制备生物相容性温敏纳米载体的工艺,该工艺包括以下步骤:(a) 制备聚合物分散体,该聚合物分散体由具有光交联官能团的水溶性生物相容性聚合物组成、(b) 通过向聚合物分散体中添加引发剂制备聚合物引发剂溶液,以及 (c) 通过向聚合物引发剂溶液照射光制备纳米载体,其中纳米载体的平均直径随温度变化而变化,这也涉及一种温敏纳米载体。本发明的纳米载体对温度敏感,其平均直径和孔径随温度变化而可逆变化。在本发明的一个实施方案中,纳米载体可通过一锅单相合成法制备。本发明的工艺克服了使用有机溶剂、制备步骤复杂、制造成本相对较高和负载效率较低等传统问题。此外,本发明的工艺还能确保药物的稳定性,而无需进行传统工艺中通常要进行的高速均质或超声波处理。