Anti-primer quenching-based real-time PCR for simplex or multiplex DNA quantification and single-nucleotide...

Area of Science:

• Molecular Biology
• Biotechnology
• Genetics

Background:

• Nucleic acid amplification and detection are crucial for genetic analysis, diagnostics, and drug discovery.
• Existing quantitative PCR methods can be expensive and lack flexibility.

Purpose of the Study:

• To introduce a new, versatile quantitative PCR method for nucleic acid target quantification.
• To provide a practical and cost-effective alternative to current approaches.

Main Methods:

• Developed an anti-primer-based quantitative real-time PCR (aQRT-PCR) method.
• Modified a PCR primer with a fluorescently labeled 5' tail.
• Incorporated an anti-primer (complementary oligonucleotide with a 3' quencher) into the PCR reaction.

Main Results:

• The anti-primer specifically quenches free primer fluorescence, not the PCR product.
• Enables real-time fluorescent quantification of nucleic acid targets.
• Achieved simplex/multiplex quantification and SNP genotyping in diverse clinical sample types.

Conclusions:

• aQRT-PCR offers versatile and flexible nucleic acid quantification.
• The method is suitable for various clinical sample qualities and provides a cost-effective alternative.
• The entire aQRT-PCR process can be completed within 1.5-2 hours.