A folic acid-based functionalized surface for biosensor systems.

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Cancer Diagnostics

Background:

• Biosensor performance relies heavily on the biological interface for specificity.
• Functionalizing sensor surfaces is crucial for targeted analyte recognition.
• Nasopharyngeal cancer detection requires sensitive and specific diagnostic tools.

Purpose of the Study:

• To functionalize a cantilever biosensor with folic acid for nasopharyngeal cancer cell recognition.
• To establish a conjugation protocol for deploying folic acid onto a titanium-coated sensor.
• To evaluate the performance of the folic acid-based biosensor in detecting cancerous cells.

Main Methods:

• Utilized folic acid as the recognition element for nasopharyngeal (KB) cancer cells.
• Developed a conjugation chemistry protocol using a silane linker to immobilize folic acid on a titanium-coated sensor.
• Verified sensor presence and biological activity via an enzyme-linked immunosorbent assay (ELISA).
• Assessed overall sensor performance through cancerous KB cell-binding experiments.

Main Results:

• Successfully deployed folic acid onto the cantilever sensor surface.
• Confirmed the biological activity and specificity of the functionalized sensor.
• Demonstrated the sensor's capability to bind specifically to cancerous KB cells.

Conclusions:

• Folic acid is a suitable functional component for cantilever biosensors targeting nasopharyngeal cancer cells.
• The developed conjugation protocol enables effective sensor surface functionalization.
• The folic acid-based cantilever biosensor shows promise for sensitive and specific cancer cell detection.