Universal probe-based SNP genotyping with visual readout: a robust and versatile method

Area of Science:

• Molecular Biology
• Genetics
• Biotechnology

Background:

• Single nucleotide polymorphisms (SNPs) are crucial for personalized medicine, but current detection methods are inefficient.
• Existing clinical detection methods face challenges like primer dimerization and require target-specific system redesigns, leading to delays and increased labor.

Purpose of the Study:

• To develop a robust and versatile method for single nucleotide polymorphism (SNP) typing.
• To overcome limitations of current SNP detection methods, such as primer dimerization and lengthy processes.

Main Methods:

• Utilized tailed primers and universal small molecule probes.
• Integrated the assay with a visualized lateral flow assay (LFA).
• Applied the universal assay to genotype four SNP loci in clinical samples.

Main Results:

• The new method enables rapid typing of diverse SNP targets.
• Successfully eliminated primer dimer interference, enhancing result accuracy and reliability.
• Genotyping results from the universal assay were consistent with Sanger sequencing.

Conclusions:

• Established a universal "typing formula" using nucleic acid tags and small molecule probes.
• Developed a powerful and versatile genotyping platform for genetic analysis and molecular diagnostics.
• The method offers a significant advancement for clinical diagnosis and personalized treatment strategies.