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Hydrogen Peroxide and Glutathione Dual Redox‐Responsive Nanoparticles for Controlled DOX Release
Author(s) -
Chen Runhai,
Ma Zhifang,
Xiang Zehong,
Xia Yu,
Shi Qiang,
Wong ShingChung,
Yin Jinghua
Publication year - 2020
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201900331
Subject(s) - chemistry , glutathione , amphiphile , hydrogen peroxide , reactive oxygen species , combinatorial chemistry , redox , doxorubicin , drug delivery , copolymer , biophysics , biochemistry , organic chemistry , polymer , chemotherapy , medicine , surgery , biology , enzyme
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.