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NAC-Grafted ROS-Scavenging Polymer Nanoparticles for Modulation of Acute Lung Injury Microenvironment In Vivo
Wali Muhammad1,2, Min Liang3, Beiduo Wang1
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China.
Biomacromolecules
|December 27, 2024
Summary
N-Acetyl cysteine (NAC) nanoparticles effectively reduce lung inflammation and oxidative stress. This novel drug delivery system offers superior protection against acute lung injury compared to traditional NAC treatments.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Pulmonary Medicine
Background:
- N-Acetyl cysteine (NAC) possesses antioxidant properties beneficial for acute lung injury (ALI).
- Therapeutic limitations of NAC include poor bioavailability and short half-life.
- Developing effective drug delivery systems for NAC is crucial for ALI treatment.
Purpose of the Study:
- To develop NAC-grafted polymer nanoparticles (NPT@NPs) as a drug delivery system for ALI.
- To evaluate the efficacy of NPT@NPs in reducing oxidative stress and inflammation in ALI.
- To compare the therapeutic effects of NPT@NPs with free NAC in an ALI model.
Main Methods:
- Grafting NAC onto a polyurethane (PFTU) backbone.
- Preparation of NAC-grafted polymer nanoparticles (NPT@NPs).
- In vitro assessment of free radical scavenging and anti-inflammatory activity.
- In vivo evaluation of NPT@NPs in a lipopolysaccharide (LPS)-induced ALI mouse model.
Main Results:
- NPT@NPs effectively scavenged free radicals and reduced inflammation in vitro.
- In vivo, NPT@NPs ameliorated pulmonary edema and decreased inflammatory cell infiltration.
- NPT@NPs significantly suppressed myeloperoxidase expression and pro-inflammatory cytokines, reversing cell apoptosis.
- NPT@NPs showed superior efficacy over free NAC in mitigating LPS-induced lung injury.
Conclusions:
- NAC-grafted polymer nanoparticles represent a promising drug delivery system for ALI.
- NPT@NPs offer enhanced therapeutic benefits for pulmonary inflammation and oxidative stress.
- This nanotechnology approach provides a more effective strategy for ALI treatment compared to free NAC.
