PRKG2 Gene Mutation Detection for Bovine Dwarfism Screening
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Solution Overview
Problem
Current methods for diagnosing dwarfism in cattle lack effective genetic tests, relying on patho-anatomical diagnosis and having limited success in identifying carriers before clinical symptoms appear, with the underlying molecular mechanism of dwarfism in cattle breeds other than Japanese brown cattle not being isolated or characterized.
Innovation Solution
Detection of a genetic marker associated with dwarfism in bovine subjects using the PRKG2 gene, specifically a mutation within exon 15, to create a genetic test for screening and marker-assisted breeding, and developing in vitro and in vivo models to identify potential agents for ameliorating the condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If patho-anatomical diagnosis is used for dwarfism detection, then diagnosis can be performed based on observable characteristics, but carriers cannot be identified before clinical symptoms appear
Solution Approach 1:
The patent applies preliminary action by developing genetic tests that can identify carriers of dwarfism mutations before clinical symptoms appear. The test detects the presence of specific nucleotide polymorphisms in the PRKG2 gene, allowing identification of carriers in their carrier state rather than waiting for phenotypic expression of dwarfism.
2Loss of time
If genetic tests are developed for dwarfism identification, then carriers can be identified before symptoms appear, but the underlying molecular mechanism must first be isolated and characterized
Solution Approach 1:
The patent applies the extraction principle by isolating and characterizing the specific molecular mechanism of dwarfism in Angus cattle. Researchers identified that the dwarfism condition is caused by mutations in the PRKG2 gene, specifically extracting and analyzing the nucleotide polymorphisms in exon 15 of this gene to develop breed-specific genetic tests.
3Measurement precision
If breed-specific genetic tests are developed, then accurate identification of carriers in specific breeds is achieved, but tests must be developed separately for different breeds
Solution Approach 1:
The patent applies local quality by developing breed-specific genetic tests tailored to the unique characteristics of each cattle breed. The test for Angus cattle targets specific nucleotide polymorphisms in the PRKG2 gene that are relevant to Angus dwarfism, while recognizing that different breeds may require different marker panels based on their specific genetic background and mutation patterns.
Data Source
AI summary
Genetic markers for identifying bovine carriers of dwarfism in cattle, particularly Angus cattle is described. The genetic markers, including the microsatellite markers BMS4311 and AFR227 and the bovine PRKG2, BMP2K, BMP3, FGF5 genes, are located on bovine chromosome BTA6. One SNP, a polymorphism is located in the protein kinase domain within exon 15 of the bovine PRKG2 gene and is identified as being causative and diagnostic for dwarfism.