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A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
Published on: April 1, 2019
Single nucleotide polymorphism genotyping and point mutation detection by ligation on microarrays.
Yanqiang Li1, Jing Tang, Zhiqiang Pan
1State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China.
Journal of Nanoscience and Nanotechnology
|April 2, 2011
Summary
Minisequencing by ligation is a new method for detecting single nucleotide variants like single nucleotide polymorphisms (SNPs) and point mutations. This high-throughput assay is simple, cost-effective, and robust for genetic analysis.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Single nucleotide variants (SNVs), including single nucleotide polymorphisms (SNPs) and point mutations, are crucial in genetic research and diagnostics.
- Existing high-throughput methods for SNV detection can be complex or costly.
Purpose of the Study:
- To introduce and validate a novel method called "Minisequencing by ligation" for detecting known SNVs.
- To demonstrate the method's applicability in high-throughput assay formats.
Main Methods:
- Designing sequencing primers and fluorescently labeled probes with discriminating bases specific to known SNVs.
- Utilizing ligation reactions between primers and probes.
- Genotyping DNA templates on aldehyde-modified slides and Sepharose beads for optimization and validation.
Main Results:
- Accurate detection of a specific SNP locus (rs1800497 (C/T)) on an aldehyde-modified microarray.
- Accurate detection of a point mutation (Mt1555 (A/G)) on Sepharose beads.
- Demonstrated feasibility and optimized reaction conditions for SNV detection.
Conclusions:
- Minisequencing by ligation is a promising methodology for SNV analysis.
- The method offers a simple, cost-effective, robust, and high-throughput approach for point mutation and SNP detection.
Related Concept Videos
02:34DNA Microarrays
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
01:05Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...