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Labeling DNA Probes

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...

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

Alejandro Chamorro¹, Marianna Rossetti¹, Neda Bagheri¹

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

Advances in Biochemical Engineering/Biotechnology

|January 25, 2024

Summary

DNA biosensors offer sensitive and specific protein detection for disease diagnosis. This review covers structure-switching and scaffold DNA sensors, highlighting rational design for advanced protein biomarker detection.

Keywords:

DNA scaffold DNA switch Electrochemical DNA biosensors Functional DNA nanotechnology

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Area of Science:

Biotechnology
Nanotechnology
Molecular Diagnostics

Background:

Protein detection for disease diagnosis and monitoring requires sensitive, specific, rapid, and user-friendly methods.
DNA-based sensing technologies have emerged as promising tools for quantitative protein biomarker readout.
Naturally occurring chemosensors inspire artificial biosensor design, focusing on structure-switching mechanisms.

Purpose of the Study:

To provide an overview of structure-switching and scaffold DNA sensors for protein detection.
To introduce rational design principles for innovative DNA-based sensing mechanisms.
To explore strategies for programmable functional DNA systems in protein detection.

Main Methods:

Review of existing structure-switching DNA sensors.
Analysis of scaffold DNA biosensors utilizing various recognition elements.
Discussion of rational design strategies for DNA-based sensing systems.

Main Results:

Structure-switching DNA sensors mimic natural chemosensors for protein detection.
Scaffold DNA biosensors allow precise conjugation of recognition elements for enhanced signal transduction.
Programmable DNA systems offer versatile platforms for protein detection.

Conclusions:

DNA-based biosensors, including structure-switching and scaffold types, are effective for protein analyte detection.
Rational design of DNA sensing systems enables high affinity, specificity, and enhanced signal readout.
These advancements hold significant potential for disease diagnosis and physiological monitoring.