CD44-Targeted Facile Enzymatic Activatable Chitosan Nanoparticles for Efficient Antitumor Therapy and Reversal of Multidrug Resistance

Biomacromolecules. 2018 Mar 12;19(3):883-895. doi: 10.1021/acs.biomac.7b01676. Epub 2018 Feb 14.

Abstract

Nanoparticles are attractive platforms for the delivery of various anticancer therapeutics. Nevertheless, their applications are still limited by the relatively low drug loading capacity and the occurrence of multidrug resistance (MDR) against chemotherapeutics. In this study, we report that the integration of d-α-tocopherol succinate (VES) residue with both chitosan and paclitaxel (PTX) led to significant improvement of drug loading capacity and drug loading efficiency through the enhancement of drug/carrier interaction. After the incorporation of hyaluronic acid containing PEG side chains (HA-PEG), higher serum stability and more efficient cellular uptake were obtained. Due to HA coating, VES residues and the enzymatic responsive drug release property, such facile nanoparticles actively targeted cancer cells that overexpress CD44 receptor and efficiently reversed the MDR of treated cells, but caused no significant toxicity to mouse fibroblast (NIH-3T3). More importantly, with HA-PEG coating, longer blood circulation and more effective tumor accumulation were achieved for prodrug nanoparticles. Finally, superior anticancer activity and excellent safety profile was demonstrated by HA-PEG coated enzymatically activatable prodrug nanoparticles compared to commercially available Taxol formulation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chitosan* / chemistry
  • Chitosan* / pharmacokinetics
  • Chitosan* / pharmacology
  • Drug Delivery Systems / methods*
  • Drug Resistance, Multiple / drug effects*
  • Drug Resistance, Neoplasm / drug effects*
  • Female
  • Humans
  • Hyaluronan Receptors / metabolism*
  • MCF-7 Cells
  • Mice
  • Mice, Inbred BALB C
  • Mice, Nude
  • NIH 3T3 Cells
  • Nanoparticles* / chemistry
  • Nanoparticles* / therapeutic use
  • Neoplasm Proteins / metabolism*
  • Neoplasms / drug therapy*
  • Neoplasms / metabolism
  • Neoplasms / pathology
  • Paclitaxel* / chemistry
  • Paclitaxel* / pharmacokinetics
  • Paclitaxel* / pharmacology
  • Xenograft Model Antitumor Assays
  • alpha-Tocopherol* / chemistry
  • alpha-Tocopherol* / pharmacokinetics
  • alpha-Tocopherol* / pharmacology

Substances

  • CD44 protein, human
  • Hyaluronan Receptors
  • Neoplasm Proteins
  • Chitosan
  • alpha-Tocopherol
  • Paclitaxel