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Pollen-Based Artificial Enzyme With Efficient Biocatalysis and Immune-Priming to Prevent Primary and Secondary Wound
Jiangge Li1,2, Mao Wang2, Heng Yang2
1College of Biomedical Engineering, National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 25, 2026
Summary
Researchers developed pollen-based vanadium artificial enzyme particles (VAE-Pollen) to combat bacterial infections. This innovative approach uses reactive oxygen species (ROS) and immune priming to prevent and treat infections, including drug-resistant strains.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Infectious Diseases
Background:
- Bacterial infections present a major clinical challenge due to rising antibiotic resistance and frequent recurrence.
- Existing treatments often struggle with efficacy against resistant strains and preventing secondary infections.
Purpose of the Study:
- To design and evaluate a novel pollen-based artificial enzyme particle for antibacterial applications.
- To investigate the particle's ability to prevent both primary and secondary bacterial infections through ROS catalysis and immune priming.
Main Methods:
- De novo design of spiky pollen-based vanadium artificial enzyme particles (VAE-Pollen).
- Experimental and theoretical analyses of bacterial capture efficiency and reactive oxygen species (ROS)-catalytic activity.
- Evaluation of VAE-Pollen's efficacy against methicillin-resistant Staphylococcus aureus (MRSA) and its ability to prevent recurrence.
Main Results:
- VAE-Pollen efficiently captures bacteria via its micro-structured surface.
- Oxygen vacancies enhance vanadium catalytic sites, boosting ROS generation and catalytic performance.
- VAE-Pollen effectively treats MRSA infections and prevents recurrence by mimicking sustained antigen exposure for immune activation.
Conclusions:
- VAE-Pollen offers a potent, intelligent antibacterial strategy by combining ROS catalysis with immune priming.
- This approach shows significant promise in overcoming limitations of conventional antibiotics against resistant bacteria.
- VAE-Pollen presents a viable alternative for preventing and treating challenging bacterial infections.