Nanoshells for photothermal cancer therapy

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Oncology

Background:

• Cancer is a leading cause of death and rising healthcare costs.
• Current cancer treatments like surgery, radiation, and chemotherapy have limitations and can damage healthy cells.
• Nanoshells are nanoparticles with tunable optical properties, absorbing near-infrared light for deep tissue penetration.

Purpose of the Study:

• To explore the application of nanoshells for cancer treatment and imaging.
• To investigate the potential of nanoshells for photothermal tumor ablation.
• To enhance tumor specificity using functionalized nanoshells.

Main Methods:

• Fabrication of optically tunable core/shell nanoshell nanoparticles.
• Systemic injection of nanoshells and leveraging the enhanced permeability and retention (EPR) effect for tumor accumulation.
• Irradiation with a near-infrared (NIR) laser to induce photothermal ablation.
• Functionalization of nanoshell surfaces with tumor-targeting moieties.
• Utilizing nanoshells' light-scattering properties for imaging modalities like dark-field microscopy and optical coherence tomography (OCT).

Main Results:

• Nanoshells accumulate in tumors via the EPR effect.
• NIR laser irradiation of nanoshell-loaded tumors induces photothermal ablation.
• Surface functionalization increases tumor specificity.
• Nanoshells can be used for imaging applications.

Conclusions:

• Nanoshells present a promising platform for targeted cancer therapy through photothermal ablation.
• Functionalized nanoshells improve treatment specificity.
• Nanoshells offer a dual role in cancer treatment and advanced imaging.