Multifunctional siNA Molecule Design for Multi-Target Gene Silencing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current nucleic acid-based approaches for modulating gene expression, such as siRNA, often face challenges with specificity and efficiency, particularly in targeting multiple gene sequences simultaneously, leading to off-target effects and reduced potency due to strand length and composition limitations.
Innovation Solution
Development of multifunctional short interfering nucleic acid (siNA) molecules that can target multiple regions or sequences within a single nucleic acid molecule, designed to have both complementary and non-complementary regions, allowing for efficient RNA interference with reduced off-target effects by optimizing strand length and composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional siRNA molecules are used to target multiple gene sequences, then the ability to modulate multiple genes is improved, but off-target effects increase and potency decreases due to strand length and composition limitations
Solution Approach 1:
The siNA molecule is divided into multiple distinct regions, each capable of targeting a different gene sequence. This segmentation allows the single molecule to simultaneously target multiple genes while maintaining the specificity of each individual target region, resolving the contradiction between multi-gene targeting capability and treatment specificity.
Solution Approach 2:
The invention creates a universal siNA platform that can target multiple genes through its multi-region structure. Each region functions as an independent targeting module, enabling the molecule to perform multiple gene-silencing functions simultaneously, thus achieving versatility without sacrificing reliability through optimized region design.
2Adaptability or versatility
If siRNA strand length is increased to improve targeting capability, then the ability to target multiple sequences is improved, but off-target effects increase
Solution Approach 1:
Rather than using a single long strand that causes off-target effects, the invention segments the targeting capacity into multiple distinct regions within the siNA molecule. Each region is optimized for specific target recognition, allowing comprehensive targeting capability while maintaining the precision needed to avoid off-target effects.
Solution Approach 2:
Different regions of the siNA molecule are designed with specific local characteristics optimized for their respective target sequences. This local optimization ensures that each region interacts specifically with its intended target, preventing the off-target effects that would result from a uniform, longer strand design.
3Reliability
If conventional siRNA is used with limited strand length, then specificity is maintained, but the ability to target multiple sequences simultaneously is reduced
Solution Approach 1:
The invention merges multiple targeting functions into a single siNA molecule by combining multiple distinct regions, each capable of binding to different gene sequences. This merging approach maintains the specificity of individual short regions while achieving the multi-sequence targeting ability of longer or multiple molecules.
Solution Approach 2:
The siNA molecule is designed as a multi-functional agent where each region serves as an independent targeting module. This universal design allows the single molecule to perform multiple gene-silencing functions simultaneously, achieving both high specificity and broad targeting capability.
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 multifunctional siNA molecules demonstrate enhanced potency and specificity in modulating gene expression by targeting multiple sequences simultaneously, minimizing off-target effects and overcoming limitations in strand length, thereby providing a potent therapeutic option for various applications.
Implementation Method 1
RNA interference refers to the process of sequence-specific post-transcriptional gene silencing in animals mediated by short interfering RNAs (siRNAs)
Data Source
AI summary
The present invention concerns methods and nucleic acid based reagents useful in modulating gene expression in a variety of applications, including use in therapeutic, veterinary, agricultural, diagnostic, target validation, and genomic discovery applications. Specifically, the invention relates to multifunctional short interfering nucleic acid (multifunctional siNA) molecules that modulate the expression of one or more genes in a biologic system, such as a cell, tissue, or organism via RNA interference (RNAi). The bifunctional short interfering nucleic acid (multifunctional siNA) molecules of the invention can target more than one regions of nucleic acid sequence in a single target nucleic acid molecule or can target regions of nucleic acid sequence in differing target nucleic acid molecules. The self multifunctional siNA molecules are useful in the treatment of any disease or condition that responds to modulation of gene expression or activity in a cell, tissue, or organism.