Related Experiment Videos
Tag/anti-tag liquid-phase primer extension array: a flexible and versatile genotyping platform.
Jing-Guang Li1, Ulrika Liljedahl, Chew-Kiat Heng
1Department of Paediatrics, National University of Singapore, 119074, Singapore.
Genomics
|November 29, 2005
Summary
This study introduces TATLIPEXA, a novel platform for simultaneously genotyping single nucleotide polymorphisms (SNPs) and short insertions/deletions (indels). This method offers high accuracy and efficiency for genetic analysis and disease screening.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Genotyping single nucleotide polymorphisms (SNPs) and insertions/deletions (indels) is crucial for genetic studies.
- Existing methods often require complex sample preparation or lack multiplexing capabilities.
Purpose of the Study:
- To develop and demonstrate an array-based platform for simultaneous genotyping of SNPs and indels.
- To integrate the universal tag/anti-tag (TAT) system with liquid-phase primer extension (LIPEX) and a two-color detection strategy.
Main Methods:
- The TATLIPEXA platform combines the TAT system, LIPEX, and a novel two-color detection strategy on an array.
- Single reactions interrogate multiple SNPs and short indels using only two fluorescently labeled dideoxynucleotide triphosphates (ddNTPs).
Main Results:
- Demonstrated TATLIPEXA for nine SNPs (eight point mutations, one single-base insertion).
- Achieved 100% concordance with DNA sequencing and restriction fragment length polymorphism (RFLP).
- Platform provides quantitative allele frequency information for pooled DNA samples.
Conclusions:
- TATLIPEXA is a highly accurate and efficient method for simultaneous SNP and indel genotyping.
- The platform simplifies sample preparation and enhances sensitivity.
- TATLIPEXA serves as a rapid screening tool for disease-associated SNPs.