Aptamer-based biosensors: from SELEX to biomedical diagnostics

With excellent binding properties, stability, programmable structures, and ease of modification, DNA aptamers are promising for developing biosensors for both point-of-care and continuous monitoring applications. Over the last few years, significant progress has been made in the selection of high-quality aptamers for important target molecules, fundamental understanding of aptamer binding, and biosensor development, especially in the form of portable sensors, continuous in vivo monitoring and wearable devices. For small molecule targets, library-immobilization-based selection has yielded over 100 high-quality short aptamers with well-defined secondary structures. For protein targets, engineering polyvalent…

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  Natural Sciences and Engineering Research Council of Canada