Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/143090
Title: Design and optimisation of Photochrome Aptamer Switch Assay (PHASA)
Authors: Zhou, Yubin
Wu, Yuanyuan
Pokholenko, Oleksandr
Papper, Vladislav
Marks, Robert S.
Steele, Terry W. J.
Keywords: Engineering::Materials
Issue Date: 2019
Source: Zhou, Y., Wu, Y., Pokholenko, O., Papper, V., Marks, R. S., & Steele, T. W. J. (2019). Design and optimisation of Photochrome Aptamer Switch Assay (PHASA). Analytica Chimica Acta, 1061, 134-141. doi:10.1016/j.aca.2019.01.049
Journal: Analytica Chimica Acta
Abstract: Photochrome Aptamer Switch Assay (PHASA) is our unique and recently developed fluorescent biosensing platform that exploits the combination of aptamer adaptive binding and photoisomerisation kinetics of stilbenes. The PHASA is based on converting any suitable stilbene-ligand-aptamer complex into a reversible biosensor. Binding affinity, aptamer concentration, and stilbene molecular structure determine the PHASA performance criteria. Consequently, understanding of the structure-activity relationship of the stilbene-ligand conjugate is extremely important when predicting and optimising the biosensor sensitivity. In the present manuscript, new analytical methods relating to calculation of the limit of detection (LOD) of the PHASA are proposed and discussed. Using these methods, it is possible to optimise the independent or dependent physicochemical parameters of the stilbene-ligand conjugates and evaluate their general sensing performance. The proposed analytical methods are based on the inter-dependent relationships between the sensitivity and the range of analyte detection and provide starting conditions for known aptamer binding constants in various PHASA applications.
URI: https://hdl.handle.net/10356/143090
ISSN: 1873-4324
DOI: 10.1016/j.aca.2019.01.049
Rights: © 2019 Elsevier. All rights reserved. This paper was published in Analytica Chimica Acta and is made available with permission of Elsevier.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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