Journal
ACS SENSORS
Volume 4, Issue 3, Pages 717-725Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.8b01642
Keywords
surface plasmon resonance biosensor; secreted bacterial factor; molecular imprinting; competitive ELISA; oxidative skin diseases
Funding
- Royal Physiographic Society of Lund
- Swedish Society for Medicine
- foundation of Crafoord
- foundation of Langmanska Kulturfonden
- foundation of Alfred Osterlund
- foundation of Tornspiran
- foundation of Magnus Bergvall
- foundation of Ake Wiberg
- foundation of Clas Groschinsky
- foundation of Swedish Research Council
- Sigurd and Elsa Goljes Minne
Ask authors/readers for more resources
In this study, a surface plasmon resonance (SPR) biosensor was developed for the detection and quantification of a secreted bacterial factor (RoxP) from skin. A molecular imprinting method was used for the preparation of sensor chips and five different monomer-cross-linker compositions were evaluated for sensitivity, selectivity, affinity, and kinetic measurements. The most promising molecularly imprinted polymer (MIP) was characterized by using scanning electron microscopy, atomic force microscopy, and cyclic voltammetry. Limit of detection (LOD) value was calculated as 0.23 nM with an affinity constant of 3.3 X 10(-9) M for the promising MIP. Besides being highly sensitive, the developed system was also very selective for the template protein RoxP, proven by the calculated selectivity coefficients. Finally, absolute concentrations of RoxP in several skin swabs were analyzed by using the developed MIP-SPR biosensor and compared to a competitive ELISA. Consequently, the developed system offers a very efficient tool for the detection and quantification of RoxP as an early indicator for some oxidative skin diseases especially when they are present in low-abundance levels (e.g., skin samples).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available