Targeted Peptide Nanofiber-Loaded Stomatocytes for Combined Photodynamic and Photothermal Therapy

Area of Science:

• Nanomedicine
• Polymer Chemistry
• Cancer Therapy

Background:

• Photodynamic therapy (PDT) and photothermal therapy (PTT) are precise cancer treatments.
• Current photosensitizer nanodrugs face challenges like rapid degradation and poor tumor targeting.
• Advanced drug delivery systems are needed to overcome these limitations.

Purpose of the Study:

• To develop a dual-nanoparticle drug delivery platform for enhanced cancer therapy.
• To improve tumor targeting, cellular uptake, and therapeutic efficacy of PDT and PTT.
• To address the limitations of existing photosensitizer nanodrugs.

Main Methods:

• Fabrication of bowl-shaped polymer vesicles loaded with photosensitizer-conjugated nanofibers.
• Surface modification of nanoparticles with mannose glycopolymers for targeting.
• Evaluation of tumor imaging, targeting, cellular uptake, ROS generation, and temperature elevation under laser irradiation.

Main Results:

• The dual-nanoparticle platform demonstrated enhanced tumor imaging and targeting capabilities.
• Significant improvement in cellular uptake in tumor cells and 3D tumor spheroids was observed.
• Effective generation of reactive oxygen species (ROS) and temperature elevation under laser irradiation confirmed PDT and PTT performance.

Conclusions:

• The developed dual-nanoparticle platform offers a promising nanomedicine approach for precision cancer therapy.
• The platform overcomes limitations of conventional photosensitizer nanodrugs, improving treatment efficacy.
• This advanced system holds potential for future clinical applications in oncology.