High-Performance Nucleic Acid Sensors for Liquid Biopsy Applications

Area of Science:

• Biomedical Engineering
• Molecular Biology
• Oncology

Background:

• Circulating tumor nucleic acids (ctNAs) are released from tumor cells into the bloodstream.
• ctNAs offer a non-invasive alternative to traditional tissue biopsies for cancer detection and monitoring.
• Detecting low-abundance ctNAs requires highly sensitive and specific analytical methods due to high levels of wild-type sequences.

Purpose of the Study:

• To review high-performance nucleic acid biosensors for analyzing ctNAs in patient blood samples.
• To compare established sequencing and amplification methods with next-generation ctNA profiling sensors.
• To evaluate the analytical sensitivity, accuracy, and challenges of various ctNA detection technologies.

Main Methods:

• Comparison of sequencing- and amplification-based methods.
• Review of next-generation sensors including electrochemical methods, surface plasmon resonance, and Raman spectroscopy.
• Analysis of microfluidics and dielectrophoresis-based assays for ctNA detection.

Main Results:

• Discussion of various high-performance biosensors for ctNA analysis.
• Comparative overview of analytical sensitivity and accuracy across different detection platforms.
• Identification of biological and technical challenges associated with ctNA detection.

Conclusions:

• Advanced nucleic acid biosensors show significant potential for sensitive and specific ctNA detection.
• Liquid biopsy approaches using ctNAs can revolutionize cancer diagnosis and management.
• Further development is needed to overcome existing challenges for widespread clinical application.