Freezing-Activated Covalent Organic Frameworks for Precise Fluorescence Cryo-Imaging of Cancer Tissue

Area of Science:

• Nanotechnology
• Materials Science
• Oncology
• Surgical Imaging

Background:

• Cryosurgery is effective for resistant tumors but lacks precise imaging for tissue differentiation.
• Current imaging methods struggle with high spatial resolution to distinguish cancerous from healthy tissue during cryoablation.
• Need for advanced imaging agents to guide cryosurgery and improve its clinical efficacy.

Purpose of the Study:

• To develop a nanoscale Covalent Organic Framework (COF) for enhanced fluorescence-guided cryo-imaging.
• To enable precise differentiation between cancerous and healthy tissues under cryogenic conditions.
• To improve the accuracy and safety of cryosurgery for oncologic interventions.

Main Methods:

• Synthesis and characterization of a novel nanoscale COF, nTG-DFP-COF.
• Evaluation of temperature-dependent luminescence properties under cryogenic conditions.
• Assessment of biocompatibility, water dispersibility, cytotoxicity, and cancer cell specificity.
• In vitro, in vivo, and ex vivo studies to confirm structural stability and functional efficacy.

Main Results:

• The nTG-DFP-COF exhibits enhanced fluorescence emission under cryogenic conditions, enabling precise tissue differentiation.
• The COF demonstrated minimal cytotoxicity and high specificity toward cancer cells.
• Structural stability and functional efficacy were confirmed across various experimental settings.

Conclusions:

• The developed nanoscale COF significantly enhances fluorescence-guided cryo-imaging for cryosurgery.
• This innovation improves tumor targeting accuracy, potentially reducing repeat surgeries and healthcare costs.
• The nTG-DFP-COF represents a new standard in integrated diagnostic and therapeutic platforms for oncologic interventions.