Journal of Chinese Pharmaceutical Sciences ›› 2016, Vol. 25 ›› Issue (8): 570-575.DOI: 10.5246/jcps.2016.08.063

• Original articles • Previous Articles     Next Articles

The preparation and characteristics of sterically stabilized liposomes containing paclitaxel and super-paramagnetic iron oxide nanoparticles

Wei Ren1,2, Shuang Zhang1,2, Ting Zhong1,2, Dan Huang1,2, Xin Yao1,2, Yang Guo1,2, Xiaochuan Duan1,2, Yifan Yin2, Shushi Zhang2, Xuan Zhang1,2*   

  1. 1. Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
    2. Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
  • Received:2016-05-15 Revised:2016-05-29 Online:2016-09-01 Published:2016-06-12
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  • Supported by:
    Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20120001110012).


Theranostics, combining therapy and diagnosis, is an appealing approach for chemotherapy. In the present study, we selected paclitaxel (PTX) as a therapeutic agent, super-paramagnetic iron oxide nanoparticles (SPIO) as a diagnostic agent and sterically stabilized liposomes as a carrier to prepare theranostic liposomes. The SPIO were prepared and characterized. Moreover, the sterically stabilized liposomes containing PTX and SPIO (PTX/SPIO-SSL) were prepared. The characteristics of PTX/SPIO-SSL were investigated. The results indicated that prepared SPIO exhibited super-paramagnetic and could be used for MRI. The average particle size of PTX/SPIO-SSL was about 170 nm, with a polydispersity index (PDI) less than 0.3. The zeta potential of PTX/SPIO-SSL was negative. The PTX entrapment efficiency of PTX/SPIO-SSL was more than 98%. The TEM results indicated the spherical structure and dense SPIO content in PTX/SPIO-SSL. The in vitro release of PTX from PTX/SPIO-SSL and PTX-SSL was almost identical at both pH 6.8 and 7.4. In conclusion, the PTX/SPIO-SSL were prepared and characterized in vitro. The anti-tumor and diagnostic activity of PTX/SPIO-SSL should be investigated deeply in future study. 

Key words: Paclitaxel, Super-paramagnetic iron oxide nanoparticles, Sterically stabilized liposomes, Theranostics

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