Biomimetic Functional Nanocomplexes for Photothermal Cancer Chemoimmunotheranostics

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Cancer Research

Background:

• Multimodal cancer therapy offers improved treatment efficacy over single-modality approaches.
• Developing targeted drug delivery systems is crucial for effective cancer treatment.
• Carbon nanohorn (CNH) complexes show potential for biomedical applications due to their unique properties.

Purpose of the Study:

• To develop a novel multimodal cancer theranostic platform using tumor cell-coated biomimetic carbon nanohorn (CNH) complexes.
• To investigate the combined photothermal therapy, chemotherapy, and immunotherapy capabilities of the CNH platform against colorectal cancer.
• To evaluate the targeted drug delivery, controlled release, and immune response induction of the engineered nanocomplexes.

Main Methods:

• Fabrication of CNH complexes encapsulating paclitaxel (PTX).
• Coating CNH complexes with tumor cell membranes to create biomimetic nanocomplexes.
• Evaluation of photothermal properties under near-infrared light irradiation.
• Assessment of drug release kinetics, tumor targeting, and in vitro/in vivo antitumor efficacy, including immune response.

Main Results:

• The tumor cell-coated CNH nanocomplexes demonstrated enhanced water dispersibility, immune evasion, and tumor targeting.
• Effective light-controllable delivery of paclitaxel (PTX) to solid tumors was achieved.
• Significant photothermal conversion led to cancer cell ablation and activation of antitumor immune responses.
• The platform induced cancer cell death and a robust overall antitumor response.

Conclusions:

• The developed biomimetic CNH nanocomplexes represent a promising multimodal theranostic platform for colorectal cancer treatment.
• Integration of photothermal therapy, chemotherapy, and immunotherapy in a single platform enhances therapeutic outcomes.
• This approach offers a potential strategy to combat intractable cancers through synergistic therapeutic effects.