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Rationally Designed DNA-Based Scaffolds and Switching Probes for Protein Sensing

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Advances in Biochemical Engineering/Biotechnology

Abstract

The detection of a protein analyte and use of this type of information for disease diagnosis and physiological monitoring requires methods with high sensitivity and specificity that have to be also easy to use, rapid and, ideally, single step. In the last 10 years, a number of DNA-based sensing methods and sensors have been developed in order to achieve quantitative readout of protein biomarkers. Inspired by the speed, specificity, and versatility of naturally occurring chemosensors based on structure-switching biomolecules, significant efforts have been done to reproduce these mechanisms into the fabrication of artificial biosensors for protein detection. As an alternative, in scaffold DNA biosensors, different recognition elements (e.g., peptides, proteins, small molecules, and antibodies) can be conjugated to the DNA scaffold with high accuracy and precision in order to specifically interact with the target protein with high affinity and specificity. They have several advantages and potential, especially because the transduction signal can be drastically enhanced. Our aim here is to provide an overview of the best examples of structure switching-based and scaffold DNA sensors, as well as to introduce the reader to the rational design of innovative sensing mechanisms and strategies based on programmable functional DNA systems for protein detection.

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  1. Department of Chemistry, University of Rome Tor Vergata, Rome, Italy

    Alejandro Chamorro, Marianna Rossetti, Neda Bagheri & Alessandro Porchetta

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Chamorro, A., Rossetti, M., Bagheri, N., Porchetta, A. (2023). Rationally Designed DNA-Based Scaffolds and Switching Probes for Protein Sensing. In: Advances in Biochemical Engineering/Biotechnology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10_2023_235

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