摘要

In the present study, we attempted to develop a lecithin-stabilized micellar drug delivery system (LsbMDDs) for loading docetaxel (DTX) to enhance its therapeutic efficacy and minimize systemic toxicity. A novel DTX-loaded LsbMDDs was optimally prepared by a thin-film hydration method and then hydrated with a lecithin nanosuspension while being subjected to ultrasonication. Physical characteristics of the optimized DTX-loaded LsbMDDs formulations were examined and found to have a mean size of <200 nm, an encapsulation efficiency of >90%, and drug loading of >6% with stability at room temperature and at 4 °C being longer than 2 and 7 days, respectively. The in vitro release of DTX from the DTX-loaded LsbMDDs was slower than that from the generic product of DTX (Tynen®). A cell viability assay demonstrated that the LsbMDDs showed better cytotoxicity than Tynen® against CT26 cancer cells. The in vivo antitumor efficacy of the DTX-loaded LsbMDDs was observed to be better than that of Tynen® in a CT26 tumor-bearing mice model. A high-dose regimen of the DTX-loaded LsbMDDs formulation showed greater inhibition of DU145 tumor growth than did Tynen®, but with less to similar systemic toxicity. An in vivo study also showed that a greater amount of drug was able to accumulate in the tumor site with the DTX-loaded LsbMDDs, and its maximal tolerable doses for single and repeated injections were 2–2.5-fold higher than those of Tynen®. In conclusion, the LsbMDDs could be a promising high drug-loaded nanocarrier for delivering hydrophobic chemotherapeutic agents that can enhance the efficacy of chemotherapy and reduce systemic toxicity.
原文英語
頁(從 - 到)9-19
頁數11
期刊European Journal of Pharmaceutics and Biopharmaceutics
123
DOIs
出版狀態已發佈 - 二月 1 2018

Keywords

  • Docetaxel
  • DSPE-PEG2K
  • Lecithin
  • Lecithin-stabilized micelles
  • Ultrasonication

ASJC Scopus subject areas

  • Biotechnology
  • Pharmaceutical Science

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