Toward implantable glucometer: design, modeling and experimental results.

Area of Science:

• Biotechnology
• Biomedical Engineering
• Molecular Biology

Background:

• Continuous glucose monitoring (CGM) is crucial for diabetes management.
• Existing CGM technologies face limitations in accuracy, longevity, and invasiveness.
• Development of novel biosensors is needed for improved glucose detection.

Purpose of the Study:

• To introduce and validate a novel implantable glucose sensor using engineered glucokinase (GLK) molecules.
• To demonstrate the feasibility of a biologically inspired sensor (BioS) method for continuous glucose monitoring.
• To assess the performance and reliability of the GLK-based sensor over an extended period.

Main Methods:

• Computational modeling and experimental validation of engineered glucokinase (GLK) interactions with glucose.
• Development of an implantable sensor utilizing GLK as a nanoscale glucometer.
• Testing sensor performance across various glucose concentrations (0.5 mM, 1 mM, 2.5 mM) over four weeks.

Main Results:

• Simulation results confirmed the specific binding of GLK to glucose molecules.
• Experimental validation demonstrated the sensor's capability for precise glucose measurement.
• The BioS method achieved reliable glucose detection and repeated measurements for over four weeks.

Conclusions:

• The proposed biologically inspired sensor (BioS) method offers a promising approach for implantable continuous glucose monitoring.
• Engineered glucokinase (GLK) molecules serve as effective nanoscale glucometers.
• This technology demonstrates significant advantages for long-term, accurate glucose measurement.