Nucleic acid detection with single-base specificity integrating isothermal amplification and light-up aptamer probes

Area of Science:

• Biochemistry
• Molecular Biology
• Analytical Chemistry

Background:

• Label-free detection methods are crucial for sensitive nucleic acid analysis.
• Existing assays often face limitations in sensitivity or specificity.
• Isothermal amplification offers advantages for rapid nucleic acid detection.

Purpose of the Study:

• To develop a novel platform for label-free nucleic acid detection.
• To achieve high sensitivity and single-base specificity in nucleic acid assays.
• To utilize isothermal amplification and light-up aptamer probes for enhanced detection.

Main Methods:

• Employing isothermal amplification to generate target amplicons.
• Converting double-stranded amplicons into single-stranded targets.
• Utilizing split dapoxyl aptamer probes for sequence-specific hybridization and signal generation.

Main Results:

• Demonstrated attomolar sensitivity for nucleic acid detection.
• Achieved single-base specificity in distinguishing target sequences.
• Validated the effectiveness of the label-free, isothermal amplification approach.

Conclusions:

• The novel platform provides a sensitive and specific method for nucleic acid detection.
• Light-up aptamer probes combined with isothermal amplification offer a powerful tool for molecular diagnostics.
• This approach has potential applications in various fields requiring precise nucleic acid analysis.