Genetically Encoded DNA Origami for CAR-T-Based Immunotherapy.

Area of Science:

• Biotechnology
• Immunotherapy
• Nanotechnology

Background:

• DNA origami is utilized in various biomedical fields like bioimaging and drug delivery.
• The gene-encoding potential of DNA scaffolds in DNA origami remains largely unexplored.

Purpose of the Study:

• To develop a universal strategy for creating genetically encoded DNA origami.
• To apply this technology for CAR-T-based immunotherapy.

Main Methods:

• Incorporating sense and antisense strands encoding the chimeric antigen receptor (CAR) into DNA origami scaffolds.
• Utilizing the genetically encoded DNA origami as a template for lipid growth.
• Decorating the lipid-coated DNA origami with CD3 antibodies for T cell targeting.

Main Results:

• Genetically encoded DNA origami successfully functions as a template for lipid growth.
• Lipid-coated DNA origami with CD3 antibody decoration efficiently targets and penetrates T cells.
• Achieved successful CAR expression within T cells for tumor cell capture.

Conclusions:

• A novel DNA origami-based delivery system for CAR-T therapy has been rationally designed.
• This approach provides a new strategy for developing effective CAR-T therapies.
• The genetically encoded DNA origami system enhances CAR-T immunotherapy potential.