Abstract
A plasmonic biosensor for rapid detection of protein biomarkers in complex media is reported. Clinical serum samples were analyzed by using a novel biointerface architecture based on poly[(N-(2-hydroxypropyl) methacrylamide)-co-(carboxybetaine methacrylamide)] brushes functionalized with bioreceptors. This biointerface provided an excellent resistance to fouling even after the functionalization and allowed for the first time the direct detection of antibodies against hepatitis B surface antigen (anti-HBs) in clinical serum samples using surface plasmon resonance (SPR). The fabricated SPR biosensor allowed discrimination of anti-HBs positive and negative clinical samples in 10 min. Results are validated by enzyme-linked immunoassays of the sera in a certified laboratory. The sensor could be regenerated by simple treatment with glycine buffer.
Originalsprache | Englisch |
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Seitenumfang | 5 |
Fachzeitschrift | Biosensors & Bioelectronics |
Volume | 85 |
Issue | 85 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2016 |
Research Field
- Biosensor Technologies
Schlagwörter
- Surface plasmon resonance Biosensors
- Polymer brushes
- Antifouling