Synthesis of thermal and oxidation dual responsive polymers for reactive oxygen species (ROS)-triggered drug release

2015 ◽  
Vol 6 (5) ◽  
pp. 738-747 ◽  
Author(s):  
Chunsheng Xiao ◽  
Jianxun Ding ◽  
Lili Ma ◽  
Chenguang Yang ◽  
Xiuli Zhuang ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Release ◽  
Main Chain ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Responsive Polymer ◽  
Triggered Drug Release

A PEG-based main chain thermo-responsive polymer with oxidation-triggerable thioether groups: synthesis, characterization and its use for ROS-responsive drug release.

scholarly journals Reactive Oxygen Species Responsive Polymers for Drug Delivery Systems

2021 ◽  
Vol 9 ◽  
Author(s):  
Fengxiang Gao ◽  
Zhengrong Xiong
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Delivery ◽  
Targeted Delivery ◽  
Reactive Oxygen ◽  
Molecular Structures ◽  
Chemical Mechanism ◽  
Oxygen Species ◽  
Polymer Carriers ◽  
Responsive Polymers ◽  
Responsive Polymer

Reactive oxygen species (ROS) play an essential role in regulating various physiological functions of living organisms; however, as the concentration of ROS increases in the area of a lesion, this may undermine cellular homeostasis, leading to a series of diseases. Using cell-product species as triggers for targeted regulation of polymer structures and activity represents a promising approach for the treatment. ROS-responsive polymer carriers allow the targeted delivery of drugs, reduce toxicity and side effects on normal cells, and control the release of drugs, which are all advantages compared with traditional small-molecule chemotherapy agents. These formulations have attracted great interest due to their potential applications in biomedicine. In this review, recent progresses on ROS responsive polymer carriers are summarized, with a focus on the chemical mechanism of ROS-responsive polymers and the design of molecular structures for targeted drug delivery and controlled drug release. Meanwhile, we discuss the challenges and future prospects of its applications.

scholarly journals Poly(PS-b-DMA) micelles for reactive oxygen species triggered drug release

2012 ◽  
Vol 162 (3) ◽  
pp. 591-598 ◽  
Author(s):  
Mukesh K. Gupta ◽  
Travis A. Meyer ◽  
Christopher E. Nelson ◽  
Craig L. Duvall
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Release ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Triggered Drug Release

Glutathione and Reactive Oxygen Species Dual-Responsive Block Copolymer Prodrugs for Boosting Tumor Site-Specific Drug Release and Enhanced Antitumor Efficacy

2020 ◽  
Vol 21 (2) ◽  
pp. 921-929 ◽  
Author(s):  
Wei Yin ◽  
Wendong Ke ◽  
Nannan Lu ◽  
Yuheng Wang ◽  
Abd Al-Wali Mohammed M. Japir ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Block Copolymer ◽  
Drug Release ◽  
Reactive Oxygen ◽  
Antitumor Efficacy ◽  
Specific Drug ◽  
Oxygen Species ◽  
Tumor Site ◽  
Site Specific ◽  
Dual Responsive

scholarly journals Photo-Responsive Supramolecular Micelles for Controlled Drug Release and Improved Chemotherapy

2020 ◽  
Vol 22 (1) ◽  
pp. 154
Author(s):  
Fasih Bintang Ilhami ◽  
Kai-Chen Peng ◽  
Yi-Shiuan Chang ◽  
Yihalem Abebe Alemayehu ◽  
Hsieh-Chih Tsai ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Release ◽  
Visible Light ◽  
Cancer Cells ◽  
Laser Irradiation ◽  
Reactive Oxygen ◽  
Controlled Drug Release ◽  
Grand Challenge ◽  
Supramolecular System ◽  
Oxygen Species

Development of stimuli-responsive supramolecular micelles that enable high levels of well-controlled drug release in cancer cells remains a grand challenge. Here, we encapsulated the antitumor drug doxorubicin (DOX) and pro-photosensitizer 5-aminolevulinic acid (5-ALA) within adenine-functionalized supramolecular micelles (A-PPG), in order to achieve effective drug delivery combined with photo-chemotherapy. The resulting DOX/5-ALA-loaded micelles exhibited excellent light and pH-responsive behavior in aqueous solution and high drug-entrapment stability in serum-rich media. A short duration (1–2 min) of laser irradiation with visible light induced the dissociation of the DOX/5-ALA complexes within the micelles, which disrupted micellular stability and resulted in rapid, immediate release of the physically entrapped drug from the micelles. In addition, in vitro assays of cellular reactive oxygen species generation and cellular internalization confirmed the drug-loaded micelles exhibited significantly enhanced cellular uptake after visible light irradiation, and that the light-triggered disassembly of micellar structures rapidly increased the production of reactive oxygen species within the cells. Importantly, flow cytometric analysis demonstrated that laser irradiation of cancer cells incubated with DOX/5-ALA-loaded A-PPG micelles effectively induced apoptotic cell death via endocytosis. Thus, this newly developed supramolecular system may offer a potential route towards improving the efficacy of synergistic chemotherapeutic approaches for cancer.

Endogenous reactive oxygen species burst induced and spatiotemporally controlled multiple drug release by traceable nanoparticles for enhancing antitumor efficacy

2021 ◽  
Author(s):  
Ning Wang ◽  
Chenyu Liu ◽  
Weihe Yao ◽  
Hengjun Zhou ◽  
Simiao Yu ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Release ◽  
Reactive Oxygen ◽  
Combined Effect ◽  
Antitumor Efficacy ◽  
Multiple Drug ◽  
Oxygen Species ◽  
Anticancer Effects ◽  
Endogenous Reactive Oxygen Species ◽  
Reactive Oxygen Species Burst

Reactive oxygen species (ROS) are not only used as a therapeutic reagent in chemodynamic therapy (CDT), to stimulate the release of drugs, they can also be used to achieve a combined effect of CDT and chemotherapy to enhance anticancer effects.

scholarly journals Reactive oxygen species and enzyme dual-responsive biocompatible drug delivery system for targeted tumor therapy

2020 ◽  
Vol 324 ◽  
pp. 330-340 ◽  
Author(s):  
Ning Zhao ◽  
Bingbing Ding ◽  
Ying Zhang ◽  
Jessica L. Klockow ◽  
Ken Lau ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Tumor Therapy ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Dual Responsive
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