Tumor-targeting, enzyme-activated nanoparticles for simultaneous cancer diagnosis and photodynamic therapy

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Cancer Research

Background:

• Photodynamic therapy (PDT) faces challenges in clinical tumor targeting and on-site photosensitizer activation.
• Reducing patient side effects is crucial for effective cancer treatment.

Purpose of the Study:

• To synthesize and evaluate uniform diiodostyryl bodipy conjugated hyaluronic acid nanoparticles (DBHA-NPs).
• To assess the potential of DBHA-NPs for tumor diagnosis and photodynamic therapy (PDT).

Main Methods:

• Synthesis of uniform diiodostyryl bodipy conjugated hyaluronic acid nanoparticles (DBHA-NPs).
• Evaluation of PDT effects in cellular and in vivo (tumor-bearing mice) models.
• Assessment of enzyme-activated self-assembly and disaggregation behavior for on-site activation.

Main Results:

• DBHA-NPs demonstrated specific tumor targeting and enhanced permeability and retention (EPR) effect.
• Remarkable suppression of tumorous growth was observed.
• Enzyme-activated behavior enabled on-site activation for precise tumor diagnosis and significantly reduced side effects.

Conclusions:

• DBHA-NPs exhibit significant potential for photodynamically activated cancer theranostics.
• The developed nanoparticles offer a promising approach for precise tumor diagnosis and treatment with minimized side effects.