Journal
ADVANCED HEALTHCARE MATERIALS
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/adhm.202301645
Keywords
cancer photo-theranostics; combined therapy; covalent organic frameworks; multimodal imaging; nanomotors
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Developing efficient integrated diagnosis and treatment agents based on fuel-free self-movement nanomotors remains challenging in antitumor therapy. This study reports a COF-based biomimetic nanomotor composed of a PPy core, porphyrin-COF shell, and HCT116 cancer cell membrane coating. The nanomotor achieves directional motion through self-thermophoretic force and has good mobility due to the cancer cell membrane coating. The COF-based nanomotor shows promising results for cancer treatment with combined imaging and therapy modalities.
Developing efficient integrated diagnosis and treatment agents based on fuel-free self-movement nanomotors remains challenging in antitumor therapy. In this study, a covalent organic framework (COF)-based biomimetic nanomotor composed of polypyrrole (PPy) core, porphyrin-COF shell, and HCT116 cancer cell membrane coating is reported. Under near-infrared (NIR) light irradiation, the obtained mPPy@COF-Por can overcome Brownian motion and achieves directional motion through self-thermophoretic force generated from the PPy core. The HCT116 cancer cell membrane coating enables the nanomotor to selectively recognize the source cell lines and reduces the bio-adhesion of mPPy@COF-Por in a biological medium, endowing with this NIR light-powered nanomotor good mobility. More importantly, such multifunctional integration allows the COF-based nanomotor to be a powerful nanoagent for cancer treatment, and the high infrared thermal imaging/photoacoustic imaging/fluorescence trimodal imaging-guided combined photothermal/photodynamic therapeutic effect on HCT116 tumor cell is successfully achieved. The results offer considerable promise for the development of COF nanomotors with integrated imaging/therapy modalities in biomedical applications.
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