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Dual-scavenging Mn3O4-PEI nanoparticles targeting ROS and cfDNA for acute pancreatitis therapy
Xin Bao1, Guang Xin1, Qilong Zhou1
1West China Center of Excellence for Pancreatitis, Institute of Integrated Traditional Chinese and Western Medicine, Natural and Biomimetic Medicine Research Center, Tissue-Orientated Property of Chinese Medicine Key Laboratory of Sichuan Province, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, China.
Abstract:
Acute pancreatitis (AP) is a common inflammatory disease that seriously threatens people's lives and health. Excessive reactive oxygen species (ROS) and cell-free DNA (cfDNA) are significant contributors to the advancement of AP. In this study, a nanoparticle with a dual function to clear ROS and cfDNA was developed for the treatment of acute pancreatitis. Cationic polyethyleneimine (PEI) was used to modify Mn3O4, resulting in the creation of Mn3O4-PEI nanoparticles, which exhibited strong binding to cfDNA and the ability to scavenge ROS. In vitro, Mn3O4-PEI showed significant inhibition of ROS and cfDNA-induced inflammation and demonstrated therapeutic effects in a model of acute pancreatitis induced by sodium taurocholate (STC). This research introduces a new nanomedicine approach for the treatment of AP.
Insights
This study developed Mn3O4-PEI nanoparticles to treat acute pancreatitis by clearing reactive oxygen species (ROS) and cell-free DNA (cfDNA). These nanoparticles show therapeutic potential for this serious inflammatory disease.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Inflammation Research
Background:
- Acute pancreatitis (AP) is a severe inflammatory condition with significant mortality.
- Elevated reactive oxygen species (ROS) and cell-free DNA (cfDNA) exacerbate AP progression.
- Current treatments for AP have limitations, necessitating novel therapeutic strategies.
Purpose of the Study:
- To develop a novel nanoparticle for dual-action treatment of acute pancreatitis.
- To investigate the efficacy of Mn3O4-PEI nanoparticles in clearing ROS and cfDNA.
- To evaluate the therapeutic potential of these nanoparticles in an AP model.
Main Methods:
- Synthesis of Mn3O4-PEI nanoparticles by modifying Mn3O4 with cationic polyethyleneimine (PEI).
- Assessment of nanoparticle capabilities in binding cfDNA and scavenging ROS in vitro.
- Evaluation of Mn3O4-PEI efficacy in a sodium taurocholate (STC)-induced acute pancreatitis model.
Main Results:
- Mn3O4-PEI nanoparticles demonstrated strong cfDNA binding and ROS scavenging abilities.
- In vitro studies showed significant inhibition of ROS and cfDNA-induced inflammation.
- The nanoparticles exhibited therapeutic effects in the STC-induced acute pancreatitis model.
Conclusions:
- Mn3O4-PEI nanoparticles offer a promising dual-function nanomedicine for acute pancreatitis treatment.
- This approach targets key pathological factors, ROS and cfDNA, in AP.
- Further research into this nanomedicine could lead to improved AP therapies.
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