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Reference type: Journal
Authors: Tao ZY, Tehan EC, Bukowski RM, Tang Y, Shughart EL, Holthoff WG, Cartwright AN, Titus AH, Bright FV
Article Title: Templated xerogels as platforms for biomolecule-less biomolecule sensors.
Publication date: 2006
Journal: Analytica Chimica Acta
Volume: 564
Issue: (1)
Page numbers: 59-65.
DOI: 10.1016/j.aca.2006.01.076
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4JDMV3X-2/2/9faae7241342080da3ee1295e0ccfe4a

Abstract: We report on a new sensor strategy that we have termed protein imprinted xerogels with integrated emission sites (PIXIES). The PIXIES platform is completely self-contained, and it achieves analyte recognition without a biorecognition element (e.g., antibody). The PIXIES relies upon sol-gel-derived xerogels, molecular imprinting, and the selective installation of a luminescent reporter molecule directly within the molecularly imprint site. In operation the templated xerogel selectively recognizes the target analyte, the analyte binds to the template site, and binding causes a change in the physicochemical properties within the template site that are sensed and reported by the luminescent probe molecule. We report the PIXIES analytical figures of merit for and compare these results to a standard ELISA. For human interleukin-1 the PIXIES-based sensor elements exhibited the following analytical figures of merit: (i) ~2 pg/mL detection limits; (ii) 85 selectivity; (iv) 95% reversibility after more than 25 cycles; and (vi) >85% recoveries on spiked samples
Template and target information: protein, human interleukin 1
Author keywords: sensors, Xerogels, arrays, Protein detection, molecular imprinting, Robotic screening

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