Unraveling the Possibilities: Recent Progress in DNA Biosensing

Area of Science:

• Biotechnology
• Nanotechnology
• Molecular Biology

Background:

• DNA offers numerous modification sites, predictable structure, high thermal stability, and excellent biocompatibility.
• DNA biosensors present advantages over traditional bioanalytical techniques in sensitivity, selectivity, and detection limits.

Purpose of the Study:

• To review foundational categories of functional nucleic acids for DNA biosensor construction.
• To overview design and detection mechanisms in DNA biosensors.
• To highlight DNA's advantages as a sensor component.

Main Methods:

• Exploration of aptamers, DNAzymes, i-motifs, and G-quadruplexes.
• Analysis of structure-driven functionality in DNA biosensor design.
• Review of detection mechanisms and strategies.

Main Results:

• Identified four key functional nucleic acid categories for biosensor development.
• Highlighted DNA's programmable structure, predictable reactions, specificity, sensitivity, and thermal stability.
• Discussed current challenges including storage, detection conditions, and cost.

Conclusions:

• DNA is an ideal component for advanced biosensors due to its inherent properties.
• Potential strategies are proposed to overcome existing challenges in DNA biosensor applications.
• This review aims to guide future research in DNA biosensor development.