CRISPR uORF Editing for Gene Expression Control
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Solution Overview
Problem
Current methods for regulating gene expression in organisms lack efficient mechanisms to control the translation of genes through upstream open reading frames (uORFs), which are crucial for optimizing economic traits in industrial organisms and crop plants.
Innovation Solution
The use of genome editing techniques, specifically CRISPR/Cas9, to modify uORFs by introducing mutations that alter translation initiation codons, thereby enhancing or inhibiting the translation of target proteins, allowing for precise regulation of gene expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional gene expression regulation methods are used, then transcription control is achieved, but translation regulation through uORFs cannot be effectively controlled
Solution Approach 1:
The patent segments the gene expression regulation process into two distinct stages: transcriptional regulation (existing methods) and translational regulation (new uORF targeting). By focusing on the 5' UTR region and its uORFs, the invention creates a separate control mechanism that operates independently from transcriptional control, enabling fine-tuned translation regulation without affecting mRNA synthesis.
Solution Approach 2:
The invention applies local quality by targeting specific regions within the 5' UTR (upstream open reading frames) rather than treating the entire gene uniformly. By identifying and modifying specific uORF sequences, the patent creates localized regulatory elements that control translation initiation at precise positions, allowing differential regulation of specific protein products from the same mRNA.
2Quantity of substance
If uORFs are modified to enhance translation, then target protein expression increases, but translation inhibition is relieved
Solution Approach 1:
The patent extracts and removes the harmful uORF sequences that cause translation inhibition. By using CRISPR/Cas9 to delete or mutate specific uORF regions in the 5' UTR, the invention eliminates the restrictive elements that were previously blocking translation initiation, thereby restoring efficient protein synthesis from the target mRNA.
Solution Approach 2:
The invention converts the harmful effect of uORF-mediated translation inhibition into a beneficial regulatory mechanism. By strategically modifying uORFs, the patent creates controlled translation blocks that can be used to enhance specific protein expressions, demonstrating that the same molecular mechanism (uORF interaction) can be harnessed for positive regulatory outcomes.
3Adaptability or versatility
If genome editing of uORFs is performed, then translation regulation is achieved, but genetic modification complexity increases
Solution Approach 1:
The patent applies universality by using the CRISPR/Cas9 system to achieve multiple objectives: deleting harmful uORFs, creating beneficial uORF variants, and regulating translation of specific genes. This single versatile tool replaces the need for multiple specialized editing systems, enabling flexible translation control across different genes and organisms with one standardized platform.
Data Source
AI summary
A method of modifying an upstream open reading frame (uORF) by genome editing technique to regulate gene expression.