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Electron transfer-based antioxidant nanozymes: Emerging therapeutics for inflammatory diseases
Jingnan Zhao1, Fanfan Guo1, Lin Hou2
1School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China.
Abstract:
Inflammatory diseases are usually featured with relatively high level of reactive oxygen species (ROS). The excess ROS facilitate the polarization of microphages into proinflammatory M1 phenotype, and cause DNA damage, protein carbonylation, and lipid peroxidation, resulting in further deterioration of inflammatory diseases. Therefore, alleviating oxidative stress by ROS scavenging has been an effective strategy for reversing inflammation. Inspired by the natural antioxidant enzymes, electron transfer-based artificial antioxidant nanozymes have been emerging therapeutics for the treatment of inflammatory diseases. The present review starts with the basic knowledge of ROS and diseases, followed by summarizing the possible active centers for the preparation of antioxidant nanozymes. The strategies for the design of antioxidant nanozymes on the purpose of higher catalytic activity are provided, and the applications of the developed antioxidant nanozymes on the therapy of inflammatory diseases are discussed. A perspective is included for the design and applications of artificial antioxidant nanozymes in biomedicine as well.
Insights
Reactive oxygen species (ROS) worsen inflammatory diseases. Antioxidant nanozymes offer a promising therapeutic strategy by scavenging ROS and reducing oxidative stress.
Area of Science:
- Biomedical Engineering
- Materials Science
- Nanotechnology
Background:
- Inflammatory diseases are characterized by elevated reactive oxygen species (ROS).
- Excess ROS contribute to macrophage polarization, DNA damage, and cellular damage, exacerbating inflammation.
- Scavenging ROS via antioxidant strategies is crucial for managing inflammatory conditions.
Purpose of the Study:
- To review the fundamental knowledge of ROS and associated diseases.
- To summarize active centers for developing antioxidant nanozymes.
- To discuss strategies for enhancing nanozyme catalytic activity and their therapeutic applications.
Main Methods:
- Review of literature on ROS, inflammatory diseases, and nanozyme development.
- Analysis of strategies for designing antioxidant nanozymes with improved catalytic efficiency.
- Discussion of current applications of nanozymes in treating inflammatory diseases.
Main Results:
- Nanozymes inspired by natural enzymes show potential as electron transfer-based therapeutics.
- Specific active centers and design strategies can enhance nanozyme antioxidant activity.
- Developed nanozymes demonstrate efficacy in preclinical models of inflammatory diseases.
Conclusions:
- Antioxidant nanozymes represent a promising therapeutic avenue for inflammatory diseases.
- Further research into nanozyme design and application can optimize their biomedical potential.
- Nanozymes offer a novel approach to combatting oxidative stress in disease therapy.
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