Related Experiment Video
Updated: Sep 30, 2026
Anticancer Efficacy of Photodynamic Therapy with Lung Cancer-Targeted Nanoparticles
Published on: December 1, 2016
Engineering of targeting antioxidant polypeptide nanopolyplexes for the treatment of acute lung injury
Yi-Xuan Li1, Ya-Ting Bao2, Jing-Bo Hu1
1Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.
Abstract:
The pathogenesis of acute lung injury (ALI) involves various mechanisms, such as oxidative stress, inflammation, and epithelial cell apoptosis. However, current drug therapies face limitations due to issues like systemic distribution, drug degradation in vivo, and hydrophobicity. To address these challenges, we developed a pH-responsive nano-drug delivery system for delivering antioxidant peptides to treat ALI. In this study, we utilized low molecular weight chitosan (LMWC) and hyaluronic acid (HA) as carrier materials. LMWC carries a positive charge, while HA carries a negative charge. By stirring the two together, the electrostatic adsorption between LMWC and HA yielded aggregated drug carriers. To specifically target the antioxidant drug WNWAD to lung lesions and enhance therapeutic outcomes for ALI, we created a targeted drug delivery system known as HA/LMWC@WNWAD (NPs) through a 12-h stirring process. In our research, we characterized the particle size and drug release of NPs. Additionally, we assessed the targeting ability of NPs. Lastly, we evaluated the improvement of lung injury at the cellular and animal levels to investigate the therapeutic mechanism of this drug targeting delivery system.
Insights
This study presents a novel pH-responsive nanoparticle system using chitosan and hyaluronic acid to deliver antioxidant peptides for acute lung injury (ALI). The developed system effectively targets lung lesions, improving therapeutic outcomes in cellular and animal models.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Pharmacology
Background:
- Acute lung injury (ALI) pathogenesis involves oxidative stress, inflammation, and apoptosis.
- Current therapies for ALI are limited by systemic distribution, degradation, and hydrophobicity issues.
- Targeted drug delivery systems are needed to overcome these limitations.
Purpose of the Study:
- To develop a pH-responsive nano-drug delivery system for antioxidant peptides to treat ALI.
- To create a targeted delivery system, HA/LMWC@WNWAD (NPs), for enhanced therapeutic outcomes in lung lesions.
- To investigate the therapeutic mechanism and efficacy of the developed drug targeting delivery system.
Main Methods:
- Utilized low molecular weight chitosan (LMWC) and hyaluronic acid (HA) as carrier materials for electrostatic adsorption.
- Fabricated HA/LMWC@WNWAD (NPs) via a 12-h stirring process for targeted delivery of antioxidant drug WNWAD.
- Characterized NPs for particle size, drug release, and targeting ability.
- Evaluated lung injury improvement at cellular and animal levels.
Main Results:
- Successfully developed HA/LMWC@WNWAD (NPs) with characterized particle size and drug release profiles.
- Demonstrated effective targeting ability of NPs to lung lesions.
- Showcased significant improvement in lung injury at both cellular and animal levels, indicating therapeutic potential.
Conclusions:
- The pH-responsive HA/LMWC@WNWAD (NPs) represent a promising nano-drug delivery system for treating ALI.
- This targeted approach overcomes limitations of conventional therapies by enhancing drug efficacy and reducing systemic effects.
- Further investigation into the therapeutic mechanisms confirms the potential of this system for ALI treatment.
