Cell membrane-targeting AIE probe for Cancer and inflammatory imaging.

Area of Science:

• Biomedical Engineering
• Materials Science
• Chemical Biology

Background:

• Specific and sensitive fluorescent probes are essential for accurate cancer diagnosis and bio-imaging.
• Current probes often face challenges in sensitivity, specificity, and real-time monitoring capabilities.

Purpose of the Study:

• To develop and characterize a novel aggregation-induced emission (AIE) based fluorescent probe for enhanced cancer imaging.
• To evaluate the probe's performance in vitro and in vivo for cancer cell membrane targeting and microenvironment sensing.

Main Methods:

• Synthesis of a novel amphiphilic D-π-A fluorescent probe incorporating triphenylamine, quinoline, and sulfonate groups.
• Assessment of optical properties, including sensitivity to viscosity and photostability.
• In vitro cell imaging studies on cancer cell lines, including co-localization analysis.
• Evaluation of probe response in drug-induced inflammatory environments.
• In vivo studies using tumor-bearing mice to assess tumor accumulation and metabolism.

Main Results:

• The developed AIE probe exhibits excellent optical properties, high sensitivity to viscosity, and good photostability.
• Selective and rapid imaging of cancer cell membranes with high fluorescence intensity was achieved (Pearson coefficient = 0.92).
• The probe demonstrated enhanced fluorescence in drug-induced inflammatory environments, indicating sensitivity to microenvironmental changes.
• Preferential accumulation in tumor tissues and efficient metabolism within 72 hours were observed in vivo.

Conclusions:

• The novel AIE-based fluorescent probe shows significant potential for highly specific and sensitive cancer imaging.
• Its ability to respond to microenvironmental changes and target tumor tissues makes it suitable for real-time monitoring and surgical navigation.
• This probe represents a promising tool for advancing cancer diagnosis and treatment strategies.