Internalized compartments encapsulated nanogels for targeted drug delivery

Nanoscale. 2016 Apr 28;8(17):9178-84. doi: 10.1039/c5nr08895j.

Abstract

Drug delivery systems inspired by natural particulates hold great promise for targeted cancer therapy. An endosome formed by internalization of plasma membrane has a massive amount of membrane proteins and receptors on the surface, which is able to specifically target the homotypic cells. Herein, we describe a simple method to fabricate an internalized compartments encapsulated nanogel with endosome membrane components (EM-NG) from source cancer cells. Following intracellular uptake of methacrylated hyaluronic acid (m-HA) adsorbed SiO2/Fe3O4 nanoparticles encapsulating a crosslinker and a photoinitiator, EM-NG was readily prepared through in situ crosslinking initiated under UV irradiation after internalization. The resulting nanogels loaded with doxorubicin (DOX) displayed enhanced internalization efficiency to the source cells through a specific homotypic affinity in vitro. However, when treated with the non-source cells, the EM-NGs exhibited insignificant difference in therapeutic efficiency compared to a bare HA nanogel with DOX. This study illustrates the potential of utilizing an internalized compartments encapsulated formulation for targeted cancer therapy, and offers guidelines for developing a natural particulate-inspired drug delivery system.

MeSH terms

  • Doxorubicin / administration & dosage
  • Drug Delivery Systems*
  • Ferrous Compounds
  • Hyaluronic Acid
  • Nanoparticles*
  • Silicon Dioxide

Substances

  • Ferrous Compounds
  • Silicon Dioxide
  • Doxorubicin
  • Hyaluronic Acid
  • ferrous oxide