hnRNP A1 Knockout Mouse Model for Disease Research
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Solution Overview
Problem
Current technologies lack an effective animal model to study the function of the hnRNP A1 gene, which is implicated in various diseases such as cancer and neurodegenerative disorders, limiting the development of therapeutic strategies.
Innovation Solution
Creation of a non-human animal model, specifically mice, with disrupted hnRNP A1 gene expression using a targeting vector that inserts recombination sequences before and behind exon 8 of the hnRNP A1 gene, allowing for the generation of knockout mice with decreased or null expression levels, enabling the study of disease mechanisms and therapeutic compound screening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hnRNP A1 gene expression is disrupted to create a knockout model, then the ability to study disease mechanisms and screen therapeutic compounds is improved, but the complexity of generating and maintaining the animal model increases
Solution Approach 1:
The hnRNP A1 gene is disrupted by inserting a targeting vector at a specific location within the gene, segmenting the gene structure into functional and non-functional portions. This allows selective disruption of gene expression while preserving other genomic elements, creating a reliable knockout model without requiring complete genome restructuring.
Solution Approach 2:
A targeting vector serves as an intermediary tool to achieve gene disruption. The vector contains recombination sequences that mediate insertion into the hnRNP A1 gene, enabling precise control over gene expression disruption while simplifying the overall process of creating a knockout animal model compared to direct gene editing methods.
2Manufacturing precision
If recombination sequences are inserted to disrupt hnRNP A1 gene expression, then gene knockout efficiency is improved, but the manufacturing complexity of the targeting vector increases
Solution Approach 1:
The targeting vector is constructed in advance with pre-designed recombination sequences (such as loxP sites or FRT sites) positioned at specific locations. This preliminary preparation of the vector structure enables precise gene disruption upon introduction into the animal genome, while the modular design simplifies subsequent vector construction efforts by establishing a reusable template.
Solution Approach 2:
The targeting vector utilizes specific recombination sequence parameters (sequence identity, orientation, and positioning) to achieve precise gene disruption. By optimizing these parameters in the vector design, high disruption precision is achieved while the standardized parameter set simplifies vector manufacturing through replication of proven designs.
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 model provides a valuable tool for researching diseases associated with hnRNP A1 and identifying potential therapeutic compounds, facilitating the understanding and treatment of conditions like cancer and neurodegenerative diseases.
Implementation Method 1
a first locus of recombination sequence 1 is inserted before the exon 2 of the endogeneous hnRNP A1 gene, and second recombination sequences 2 flanking a marker gene followed by a second locus of recombination sequence 1 is inserted behind the exon 8 of the endogenous hnRNP A1 gene
Data Source
AI summary
A nucleic acid construct comprising a genetic engineered heterogeneous nuclear ribonucleoprotein (hnRNP) A1 gene is provided. A transgenic mouse in which the expression of hnRNP A1 gene has been disrupted is also provided. The mouse is useful for studying the role of hnRNP A1 gene in normal and disease states of a developmental disorder and muscular diseases. Therefore, a method of screening a compound for potential use in prevention and/or treatment of developmental disorder and muscular diseases is further provided.