More than a light switch: engineering unconventional fluorescent configurations for biological sensing

Peveler, W. J. and Algar, W. R. (2018) More than a light switch: engineering unconventional fluorescent configurations for biological sensing. ACS Chemical Biology, 13(7), pp. 1752-1766. (doi:10.1021/acschembio.7b01022) (PMID:29461796)

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Abstract

Fluorescence is a powerful and sensitive tool in biological detection, used widely for cellular imaging and in vitro molecular diagnostics. Over time, three prominent conventions have emerged in the design of fluorescent biosensors: a sensor is ideally specific for its target, only one fluorescence signal turns on or off in response to the target, and each target requires its own sensor and signal combination. These are conventions but not requirements, and sensors that break with one or more of these conventions can offer new capabilities and advantages. Here, we review “unconventional” fluorescent sensor configurations based on fluorescent dyes, proteins, and nanomaterials such as quantum dots and metal nanoclusters. These configurations include multifluorophore Förster resonance energy transfer (FRET) networks, temporal multiplexing, photonic logic, and cross-reactive arrays or “noses”. The more complex but carefully engineered biorecognition and fluorescence signaling modalities in unconventional designs are richer in information, afford greater multiplexing capacity, and are potentially better suited to the analysis of complex biological samples, interactions, processes, and diseases. We conclude with a short perspective on the future of unconventional fluorescent sensors and encourage researchers to imagine sensing beyond the metaphorical light bulb and light switch combination.

Item Type:Articles
Additional Information:The authors thank the Natural Sciences and Engineering Research Council of Canada (NSERC), the Canada Foundation for Innovation (CFI), BCKDF, and the University of British Columbia for support of their research program. W.J.P. gratefully acknowledges the Izaak Walton Killam Memorial Fund for Advanced Studies for a Postdoctoral Research Fellowship. W.R.A. gratefully acknowledges a Canada Research Chair (Tier 2), a Michael Smith Foundation for Health Research Scholar Award, and an Alfred P. Sloan Fellowship.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Peveler, Dr William
Authors: Peveler, W. J., and Algar, W. R.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:ACS Chemical Biology
Publisher:American Chemical Society
ISSN:1554-8929
ISSN (Online):1554-8937
Published Online:20 February 2018
Copyright Holders:Copyright © 2018 American Chemical Society
First Published:First published in ACS Chemical Biology 13(7): 1752-1766
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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