Nanozyme-Augmented Tumor Catalytic Therapy by Self-Supplied H₂O₂ Generation

Area of Science:

• Biotechnology
• Nanomedicine
• Enzyme Mimics

Background:

• Nanozymes, combining enzyme and nanomaterial properties, offer promising bio-nanotechnology applications.
• Improving in vivo therapeutic efficiency of nanozymes remains a significant challenge.
• Developing novel nanozyme strategies is crucial for advancing biomedical applications.

Purpose of the Study:

• To fabricate a nanozyme platform (Fe@Fe3O4@Cu2-S, MNPs) with peroxidase-like activity.
• To enhance nanozyme therapeutic efficiency by combining MNPs with beta-lapachone (La).
• To investigate the efficacy of the assembled nanozyme (LaMNPs) in a tumor microenvironment.

Main Methods:

• Fabrication of a Fe@Fe3O4@Cu2-S nanozyme platform (MNPs).
• Assembly of LaMNPs by introducing beta-lapachone to the nanozyme platform.
• In vivo evaluation of LaMNPs in a mice tumor model.

Main Results:

• LaMNPs demonstrated boosted reactive oxygen species production and upregulated H2O2 levels in acidic tumor environments.
• The released beta-lapachone by LaMNPs effectively targeted tumor cells.
• Intravenous injection of LaMNPs resulted in significant and efficient inhibition of tumor growth in mice.

Conclusions:

• The developed LaMNPs nanozyme platform shows significant potential for cancer therapy.
• Nanozyme-based strategies can be effectively enhanced for in vivo therapeutic applications.
• Targeted delivery and enhanced ROS production by LaMNPs offer a promising approach for tumor treatment.