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Reference type: Journal
Authors: Inoue Y, Kuwahara A, Ohmori K, Sunayama H, Ooya T, Takeuchi T
Article Title: Fluorescent molecularly imprinted polymer thin films for specific protein detection prepared with dansyl ethylenediamine-conjugated O-acryloyl l-hydroxyproline.
Publication date: 2013
Journal: Biosensors and Bioelectronics
Volume: 48
Page numbers: 113-119.
DOI: 10.1016/j.bios.2013.03.005
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0956566313001632

Abstract: Protein-imprinted polymers, capable of specific transduction of protein binding events into fluorescent signal change, were designed and synthesized by using dansyl ethylenediamine-conjugated O-acryloyl l-hydroxyproline (Hyp-En-Dans). Human serum albumin (HSA) was used as a model target protein and HSA-imprinted polymers (HSA-IP) were prepared on glass substrates. Specific fluorescence change was observed for HSA binding on the imprinted polymer thin film, whereas a weaker response was observed for other proteins, including bovine serum albumin, chymotrypsin, lysozyme, and avidin. The binding specificity was found to derive from the rigid structure of the hydrogen-bondable pyrrolidine moiety. Compared with SPR measurements, the non-specific binding caused by the polymer matrix and/or randomly located fluorescent monomer residues that did not compose specific binding sites did not contribute to the observed fluorescence change. These results revealed that the proposed protein-imprinting technique using Hyp-En-Dans could provide a highly selective protein-sensing platform, in which only specific binding events would be detected by fluorescent measurements
Template and target information: protein, human serum albumin, HSA
Author keywords: Molecularly imprinted polymers, Protein sensing, fluorescent detection, molecular recognition, synthetic receptor


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