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Hydrogen Peroxide and Glutathione Dual Redox-Responsive Nanoparticles for Controlled DOX Release.

Abstract
Polymer nanoparticulate drug delivery systems that respond to reactive oxygen species (ROS) and glutathione (GSH) simultaneously at biologically relevant levels hold great promise to improve the therapeutic efficacy to cancer cells with reduced side effects of chemo drugs. Herein, a novel redox dual-responsive amphiphilic block copolymer (ABP) that consists of a hydrophilic poly (ethylene oxide) block and a hydrophobic block bearing disulfide linked phenylboronic ester group as pendant is synthesized, and the DOX loaded nanoparticles (BSN-DOX) based on ABPs with varied hydrophobic block length are fabricated for DOX delivery. The self-immolative leaving reaction of phenylboronic ester triggered by extracellular ROS and the cleavage of disulfide linkages induced by intracellular GSH both lead to rapid DOX release from BSN-DOX, resulting in an on-demand DOX release. Moreover, BSN-DOX show better tumor inhibition and lower side effects in vivo compared with free drug.
AuthorsRunhai Chen, Zhifang Ma, Zehong Xiang, Yu Xia, Qiang Shi, Shing-Chung Wong, Jinghua Yin
JournalMacromolecular bioscience (Macromol Biosci) Vol. 20 Issue 2 Pg. e1900331 (02 2020) ISSN: 1616-5195 [Electronic] Germany
PMID31856396 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Copyright© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Chemical References
  • Delayed-Action Preparations
  • Drug Carriers
  • Doxorubicin
  • Hydrogen Peroxide
  • Glutathione
Topics
  • Animals
  • Delayed-Action Preparations (chemistry, pharmacokinetics, pharmacology)
  • Doxorubicin (chemistry, pharmacokinetics, pharmacology)
  • Drug Carriers (chemistry, pharmacokinetics, pharmacology)
  • Female
  • Glutathione (metabolism)
  • HeLa Cells
  • Humans
  • Hydrogen Peroxide (metabolism)
  • Mice
  • Nanoparticles (chemistry, therapeutic use)
  • Neoplasms, Experimental (drug therapy, metabolism, pathology)
  • Oxidation-Reduction
  • Xenograft Model Antitumor Assays

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