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Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection
Published on: February 9, 2024
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DNA nanotechnology for next-generation biosensors: Principles, strategies, and challenges
Arooj Sarwar1, Fareeha Shakeel1, Tayyeba Fatima1
1Sensors and Diagnostics Lab, School of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore, 54590, Pakistan.
International Journal of Biological Macromolecules
|September 23, 2025
Summary
DNA nanotechnology enables highly sensitive and multiplexed biosensors for diverse applications. Advances in DNA origami and CRISPR integration overcome limitations, paving the way for next-generation diagnostics.
Area of Science:
- Biotechnology
- Nanotechnology
- Molecular Diagnostics
Background:
- Nucleic acids offer unique structural and functional properties for nanoconstruction.
- DNA nanotechnology provides precise control over nanostructure size, shape, and biorecognition.
- Conventional diagnostic methods face limitations in sensitivity and multiplexing.
Purpose of the Study:
- To review the design strategies and applications of DNA-based biosensors.
- To highlight the sensitivity and multiplexing capabilities of DNA nanotechnology in diagnostics.
- To discuss challenges and emerging solutions in DNA nanotechnology for biosensing.
Main Methods:
- Aptamers
- DNAzymes
- DNA origami
- CRISPR integration
- Backbone modifications
- Microfluidic automation
Main Results:
- DNA-based biosensors achieve attomolar detection limits, surpassing conventional methods.
- CRISPR systems enhance sensitivity and enable multiplexed detection of various analytes.
- Design strategies like aptamers, DNAzymes, and DNA origami offer versatile platforms.
- Emerging solutions address challenges like nuclease susceptibility and scalability.
Conclusions:
- DNA nanotechnology is a transformative platform for next-generation diagnostics.
- It offers unparalleled sensitivity and multiplexing for clinical, environmental, and food safety applications.
- Further development can bridge lab innovations to real-world diagnostic tools.
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