Self-assembled Cupric Oxide Nanoclusters for Highly efficient chemodynamic therapy

Area of Science:

• Biomedical Engineering
• Materials Science
• Nanotechnology

Background:

• Chemodynamic therapy (CDT) utilizes Fenton reactions to generate hydroxyl radicals (⋅OH) for cancer cell killing.
• Current CDT methods face limitations due to catalytic agent structure and the need for acidic tumor microenvironments.
• Improving reaction efficiency and applicability in physiological conditions is crucial for CDT advancement.

Purpose of the Study:

• To design and synthesize a porous copper oxide nanocluster (CuO NC) for enhanced CDT.
• To functionalize CuO NC with folic acid (FA) for targeted cancer cell delivery (CuO NC-FA).
• To evaluate the efficiency of CuO NC-FA in catalyzing H2O2 and generating ⋅OH in near-neutral pH conditions.

Main Methods:

• Self-assembly of oleylamine-stabilized copper oxide nanoparticles (OAm-CuO NPs) to form porous CuO NC.
• Functionalization of CuO NC with folic acid to create CuO NC-FA.
• Assessment of CuO NC-FA's catalytic activity for H2O2 in near-neutral pH environments.

Main Results:

• The synthesized porous CuO NC-FA demonstrated efficient catalysis of H2O2 to generate ⋅OH.
• The nanocluster exhibited high catalytic efficiency in near-neutral pH conditions, overcoming a key limitation of traditional CDT.
• The porous structure facilitated H2O2 diffusion, further enhancing Fenton-like reaction efficiency.

Conclusions:

• Porous CuO NC-FA offers a promising platform for effective chemodynamic therapy.
• The developed nanocluster shows potential for cancer treatment due to its efficient catalytic activity at physiological pH.
• This work highlights the advantages of nanostructure design and functionalization for improving CDT efficacy.