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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
Published on: June 21, 2018
A new autosomal STR nineplex for canine identification and parentage testing.
Barbara van Asch1, Cíntia Alves, Leonor Gusmão
1IPATIMUP - Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Portugal. basch@ipatimup.pt
Electrophoresis
|February 11, 2009
Summary
A new multiplex PCR assay efficiently identifies individual dogs and confirms parentage using nine canine autosomal short tandem repeat (STR) markers. This highly discriminating system offers robust genetic diversity for forensic and population studies.
Area of Science:
- Molecular Biology
- Forensic Genetics
- Canine Genetics
Background:
- Short tandem repeat (STR) markers are crucial for canine individual identification and parentage testing.
- Existing methods may lack efficiency or comprehensive marker coverage for diverse canine populations.
Purpose of the Study:
- To develop and validate a single multiplex PCR assay for amplifying nine canine-specific autosomal STR markers.
- To enhance genotyping efficiency and discriminating power for canine DNA analysis.
Main Methods:
- Developed a multiplex PCR assay amplifying nine canine autosomal STRs (FH3210, FH3241, FH2004, FH2658, FH4012, REN214L11, FH2010, FH2361, C38).
- Optimized amplicon sizes (90-350 bp) with fluorescently labelled primers for high-throughput platforms.
- Tested the system in 113 individuals and 101 parent-offspring trios, evaluating genetic diversity and discriminating power.
Main Results:
- The multiplex system demonstrated high efficiency and discriminating power (matching probability = 1.63x10^-10).
- Expected heterozygosity ranged from 0.5648 to 0.9050 across the nine STR markers.
- The system proved effective for individual identification and parentage testing in both a specific breed and mixed-breed dogs.
Conclusions:
- The developed multiplex PCR assay is a highly performing, optimized, and well-characterized canine DNA genotyping system.
- This system is straightforward to integrate and employ routinely for forensic DNA typing and population genetic studies.
- The assay is broadly applicable for general identification and parentage testing in domestic dogs.
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