Aptamer-Gold Nanocage Composite for Photoactivated Immunotherapy

Area of Science:

• Biomedical Engineering
• Immunotherapy
• Nanotechnology

Background:

• Immune checkpoint blockade (ICB) offers durable cancer responses but faces limitations due to high cost and severe side effects.
• Developing targeted and effective cancer therapies remains a critical challenge in oncology.

Purpose of the Study:

• To develop a photoactivated immunotherapy nanoplatform (Apt@AuNC) for enhanced cancer treatment.
• To investigate the targeted delivery, immune activation, and therapeutic efficacy of the nanoplatform.

Main Methods:

• Fabrication of a photoactivatable nanoplatform (Apt@AuNC) utilizing aptamers and gold nanoclusters (AuNC).
• Utilizing the enhanced penetration and retention (EPR) effect for tumor targeting.
• Employing light illumination to release aptamers and activate the immune response via PD-1 interaction.
• Leveraging AuNC-generated heat for photothermal therapy to eliminate tumor cells.

Main Results:

• The Apt@AuNC nanoplatform successfully targeted tumor tissues.
• Light-triggered aptamer release activated the local immune system through PD-1 interaction.
• Photothermal therapy from AuNC contributed to tumor cell killing.
• The nanoplatform demonstrated precise immunotherapy and significantly enhanced anticancer efficacy.

Conclusions:

• The photoactivated immunotherapy nanoplatform (Apt@AuNC) offers a promising strategy for precise cancer treatment.
• This approach combines targeted drug delivery, immunotherapy activation, and photothermal therapy for improved therapeutic outcomes.
• The nanoplatform shows potential to overcome limitations of traditional ICB therapies.