Peanut Allergen Reduction Using RNAi and CRISPR Editing
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Solution Overview
Problem
There is a need for reduced allergen peanut plants and products to address the severe allergic reactions caused by peanut proteins, as current management strategies rely on complete avoidance, which is difficult and unrealistic.
Innovation Solution
Genetic modification of peanut plants using nucleic acid constructs, including sense and antisense regions targeting Ara h proteins, and CRISPR/Cas9 technology to create deletions in the peanut genome, reducing allergen content in seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If peanut plants are genetically modified to reduce allergen content, then safety for allergic individuals is improved, but manufacturing complexity and regulatory approval difficulty increase
Solution Approach 1:
The patent targets specific allergenic proteins (Ara h 1, Ara h 2, Ara h 3, Ara h 6, Ara h 7) individually through separate RNAi constructs or CRISPR guide RNAs, segmenting the allergen reduction approach into discrete molecular targets rather than attempting broad-spectrum modification
Solution Approach 2:
The patent uses RNA interference molecules and CRISPR/Cas9 systems as intermediary mechanisms to achieve allergen reduction without directly modifying the allergen proteins themselves, allowing precise control through molecular mediators that trigger silent degradation or targeted deletion
2Reliability
If complete avoidance of peanuts is maintained, then allergic reactions are prevented, but quality of life and dietary freedom deteriorate
Solution Approach 1:
The patent fundamentally changes the allergen content parameter in peanuts from high levels (causing severe reactions) to reduced or eliminated levels, transforming the safety profile while maintaining the same food product, thereby expanding dietary options for allergic individuals
3Quantity of substance
If multiple allergenic proteins are targeted simultaneously, then allergen reduction effectiveness is improved, but construct complexity and off-target effects increase
Solution Approach 1:
The patent designs separate RNAi constructs or CRISPR guide RNAs for each major allergenic protein (Ara h 1, Ara h 2, Ara h 3, Ara h 6, Ara h 7), allowing individual optimization and minimizing cross-reactivity or off-target effects that would arise from attempting to target all allergens with a single construct
Solution Approach 2:
The patent employs universal mechanisms (RNA interference and CRISPR/Cas9) that can be applied across multiple different allergen targets using the same molecular platform, enabling simultaneous reduction of multiple allergens while maintaining a consistent and well-characterized delivery system
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 genetic modification significantly reduces the expression of major peanut allergens, making peanut products safer for consumption by individuals with peanut allergies.
Implementation Method 1
providing a nucleic acid construct for the suppression of one or more Ara h proteins in a peanut
Implementation Method 2
nucleic acid encoding a small guide RNA (gRNA) for use in generating a deletion when used in combination with a CRISPR/Cas9 protein
Data Source
AI summary
Genetic constructs are provided to reduce or eliminate the allergenicity of peanuts. The constructs function by generating interfering RNA and/or by directing deletion using the CRISPR/Cas9 system. The constructs may be used in the production of genetically modified plants, plant parts and cells with reduced allergenicity.