Label-free determination of protein-surface interaction kinetics by ionic conductance inside a nanochannel

We have developed a label-free conductometric platform for the rapid measurement of kinetics parameters for the adsorption and desorption of proteins on surfaces. Adsorbed Bovine Serum Albumin (BSA) has been detected electrically with response times in the minute range, and kinetic models were elaborated and compared to the measurements. The device presents similar characteristics to Surface Plasmon Resonance (SPR) immunosensors, but takes advantage of a simpler, low-cost electronic measurement unit.


Published in:
Lab on a Chip, 9, 2, 319-324
Year:
2009
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Note: The status of this file is: EPFL only


 Record created 2008-12-26, last modified 2018-09-13

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