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Analysis of apolipoprotein E genotypes by the Amplification Refractory Mutation System.
P R Wenham1, C R Newton, W H Price
1Department of Clinical Chemistry, Western General Hospital, Edinburgh, U.K.
Clinical Chemistry
|February 1, 1991
Summary
The Amplification Refractory Mutation System (ARMS) accurately identifies apolipoprotein E (apo E) genotypes from human DNA. This method simplifies apo E genotyping, overcoming limitations of previous techniques.
Area of Science:
- Genetics
- Molecular Biology
- Biochemistry
Background:
- Apolipoprotein E (apo E) genetic polymorphism influences various physiological processes.
- Accurate apo E genotyping is crucial for understanding disease associations.
- Traditional methods like isoelectric focusing face challenges with post-translational modifications.
Purpose of the Study:
- To apply the Amplification Refractory Mutation System (ARMS) for apo E genotyping.
- To establish a reliable and efficient method for identifying common apo E alleles (epsilon 2, epsilon 3, epsilon 4).
Main Methods:
- Utilized ARMS with four allele-specific oligonucleotide primers and one common primer.
- Amplified specific apo E gene sequences (181 bp and 319 bp) based on the presence of target alleles.
- Analyzed human DNA extracted from peripheral blood.
Main Results:
- Successfully identified the three common apo E alleles (epsilon 2, epsilon 3, epsilon 4) using ARMS.
- Demonstrated ARMS as a simple, reliable, and nonisotopic genotyping method.
- Overcame issues of post-translational modification of apo E phenotype.
Conclusions:
- ARMS provides a robust and straightforward approach for apo E genotyping.
- This method offers an advantage over techniques affected by protein modifications.
- ARMS facilitates accurate genetic analysis of the apo E polymorphism.