Fluorescence intensity- and lifetime-based glucose sensing using glucose/galactose-binding protein

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Biochemistry

Background:

• Diabetes management requires accurate and continuous glucose monitoring.
• Current glucose sensing technologies face limitations for in vivo applications.
• Fluorescence-based biosensors offer potential for sensitive and specific analyte detection.

Purpose of the Study:

• To review progress in developing novel in vivo glucose sensors for diabetes.
• To explore fluorescence labeling strategies for glucose detection.
• To evaluate advanced measurement techniques for enhanced sensor performance.

Main Methods:

• Utilizing glucose/galactose-binding protein labeled with environmentally sensitive fluorophores.
• Employing fluorescence resonance energy transfer (FRET) for glucose-induced signal changes.
• Investigating fluorescence lifetime measurements as an alternative to intensity-based detection.

Main Results:

• Demonstrated feasibility of fluorescence labeling for glucose detection.
• Identified potential advantages of fluorescence lifetime over intensity for in vivo sensing.
• Developed a prototype fiber-optic-based glucose sensor for testing.

Conclusions:

• Fluorescence-based glucose sensors show promise for diabetes management.
• Advanced measurement techniques like fluorescence lifetime offer improved sensing capabilities.
• Ongoing development and testing of prototype sensors are crucial for clinical translation.