Light-Regulated Cancer Immunotherapy Using Individually Encapsulated Synthetic Circuit-Engineered Cells

Area of Science:

• Biomedical Engineering
• Immunotherapy
• Oncology

Background:

• Clinical efficacy of cell therapy for cancer is limited by poor cell survival, homing, and immune clearance.
• Existing methods lack precise control over therapeutic protein expression and cell protection.

Purpose of the Study:

• To develop a novel light-controlled immunotherapy strategy.
• To enhance the survival and efficacy of transplanted therapeutic cells.

Main Methods:

• Integration of a red/far-red light (660/730 nm) reversible genetic switch for spatiotemporal control of protein expression.
• Single-cell encapsulation engineering using enzyme-mediated hydrogel formation in situ.
• HRP-pHLIP membrane anchoring and HA-dopamine enzymatic crosslinking for cell surface coating.

Main Results:

• Demonstrated precise, on-demand activation of anti-tumor immune responses via light control.
• Enhanced transplanted cell survival by overcoming hypoxia, inflammatory stress, and pulmonary entrapment.
• Achieved therapeutic benefits without genomic modification of cells.

Conclusions:

• The developed strategy offers a new paradigm for safe, controllable, and efficient cancer immunotherapy.
• Combines precise gene expression regulation with physical cell protection for improved therapeutic outcomes.
• Light-controlled immunotherapy shows promise for overcoming key challenges in cell therapy.