Dual-Responsive pH and Temperature Sensitive Nanoparticles Based on Methacrylic Acid and Di(ethylene glycol) Methyl Ether Methacrylate for the Triggered Release of Drugs


KHINE Y. Y. , JIANG Y., Dag A. , Lu H., STENZEL M. H.

MACROMOLECULAR BIOSCIENCE, vol.15, no.8, pp.1091-1104, 2015 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 8
  • Publication Date: 2015
  • Doi Number: 10.1002/mabi.201500057
  • Title of Journal : MACROMOLECULAR BIOSCIENCE
  • Page Numbers: pp.1091-1104
  • Keywords: dual-responsive, lower critical solution temperature (LCST), micelle, pH-responsive, AMPHIPHILIC BLOCK-COPOLYMERS, POLYMERIC MICELLES, ANTICANCER DRUG, CELLULAR UPTAKE, THERMOSENSITIVE POLYMERS, RAFT POLYMERIZATION, SURFACE-CHARGE, DELIVERY, ALBENDAZOLE, PERFORMANCE

Abstract

A series of thermo-and pH-responsive poly(methyl methacrylate)-block-poly[methacrylic acid-co-di(ethylene glycol) methyl ether methacrylate] PMMA-b-P[MAA-co-DEGMA] block copolymers were synthesized by RAFT polymerization and self-assembled into micelles. The molar ratio of MAA was altered from 0-12% in order to modulate the lower critical solution temperature (LCST) of PDEGMA. The release of the drug albendazole from the micelle was strongly dependent on the temperature and the LCST value of the polymer. Systems below the LCST released the drug slowly while increasing the temperature above the LCST or decreasing the pH value to 5 resulted in the burst-like release of the drug. ABZ delivered in this pH-responsive drug carrier had a higher toxicity than the free drug or the drug delivered in a non-responsive drug carrier.