P1/P2 Blood Type Detection via A4GALT Gene SNP Analysis
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Solution Overview
Problem
Current DNA tests, including those using blood chips, cannot accurately determine the P1/P2 blood type due to a lack of molecular genetic understanding and inclusion of specific polymorphisms, which are common in human populations.
Innovation Solution
A method and kit for determining P1/P2 blood type by analyzing single nucleotide polymorphisms (SNPs) rs2143918 and rs5751348 in the A4GALT gene, using PCR and specific primer pairs to identify genotypes associated with P1 and P2 phenotypes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current DNA tests including blood chips are used, then general blood type detection is available, but P1/P2 blood type cannot be accurately determined due to lack of specific polymorphism inclusion
Solution Approach 1:
The patent segments the blood type detection system by identifying and targeting specific SNP loci (rs2143918 and rs5751348) within the A4GALT gene that are responsible for P1/P2 phenotypes. This segmentation allows the detection system to focus on critical genetic markers rather than attempting to detect all blood type variations simultaneously, thereby improving measurement precision for P1/P2 typing.
Solution Approach 2:
The patent introduces specific primer pairs as intermediary tools that selectively bind to the SNP variants of interest. These primers serve as mediators between the complex genomic DNA and the detection system, enabling accurate identification of P1/P2 blood types through PCR amplification of specific regions containing the informative SNPs.
2Ease of manufacture
If molecular genetic mechanism of P1/P2 blood type is not verified, then DNA tests can be simpler, but the tests cannot contain P1/P2 blood type polymorphism for accurate analysis
Solution Approach 1:
The patent performs preliminary action by conducting genetic association studies to verify the molecular genetic mechanism linking SNPs rs2143918 and rs5751348 in the A4GALT gene to P1/P2 blood types. This preliminary verification of the genetic basis enables the subsequent development of reliable DNA tests, as the causal relationship between genotype and phenotype is established beforehand.
Solution Approach 2:
The patent utilizes parameter changes at the molecular level by identifying specific nucleotide variations (SNPs) that correlate with P1/P2 phenotypes. By detecting these parameter changes in the DNA sequence, the test can reliably distinguish between different blood types without requiring complex protein-level analysis.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method provides a reliable molecular genetic mechanism for determining P1/P2 blood type across different ethnic populations, accurately identifying P1 and P2 phenotypes through genotype analysis, addressing the previous limitations of DNA tests.
Implementation Method 1
a nucleic acid in the biological sample is determined by polymerase chain reaction (hereinafter referred to as PCR)
Data Source
AI summary
The present invention provides a method for determining P1/P2 blood type, including steps of providing a biological sample of a subject, detecting a genotype for single nucleotide polymorphism rs2143918 or rs5751348 in A4GALT gene of the biological sample and determining a phenotype of the subject based on the genotype. Further, the present invention also provides a kit for determining P1/P2 blood type, including a primer pair for detecting a genotype for single nucleotide polymorphisms rs2143918 or rs5751348 in A4GALT gene of a nucleic acid sample of a subject.