Anchor-Sequence Targeting for Site-Specific Gene Expression Control
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Solution Overview
Problem
Existing technologies struggle to effectively modulate gene expression by disrupting and modifying anchor-sequence mediated conjunctions in a site-specific manner, leading to inefficient regulation of gene expression in diseases caused by defective gene regulation.
Innovation Solution
Development of site-specific agents that physically disrupt and/or modify anchor-sequence mediated conjunctions using DNA-binding moieties and fusion molecules, including enzymatically inactive Cas polypeptides and guide RNAs, to target and modulate gene expression within anchor sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If site-specific agents are used to disrupt anchor-sequence mediated conjunctions, then gene expression modulation precision is improved, but device complexity increases
Solution Approach 1:
The site-specific agent is divided into two functional segments: a DNA-binding moiety that recognizes and binds to specific anchor sequences, and a disrupting moiety that physically interferes with the anchor-sequence mediated conjunction. This segmentation allows precise targeting while managing complexity through modular design
Solution Approach 2:
The patent introduces site-specific agents as intermediary molecules that mediate between the anchor sequences and the desired gene expression outcome. These agents act as intermediaries that bind to anchor sequences and modulate the formation or stability of chromosomal conjunctions, thereby controlling gene expression without directly modifying the gene itself
2Productivity
If site-specific disrupting agents compete with endogenous nucleating polypeptides, then gene expression modulation efficacy is improved, but selectivity may be compromised
Solution Approach 1:
The DNA-binding moiety is designed with highly specific local recognition properties that enable it to bind only to particular anchor sequences with defined nucleotide patterns. This local quality assurance through sequence-specific recognition ensures that the disrupting agent acts only at intended genomic locations, maintaining selectivity while achieving effective gene expression modulation
Solution Approach 2:
The patent employs parameter changes in the binding affinity and specificity of the DNA-binding moiety to achieve optimal balance between efficacy and selectivity. By adjusting the binding strength and specificity parameters of the agent, the system can effectively compete with endogenous polypeptides at target sites while minimizing off-target effects
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 agents effectively modulate gene expression by competing with endogenous nucleating polypeptides, altering the affinity and formation of anchor sequence-mediated conjunctions, thereby enhancing or suppressing gene expression as needed.
Implementation Method 1
a DNA-binding moiety that binds specifically to one or more target anchor sequences within a cell and not to non-targeted anchor sequences within the cell with sufficient affinity that it competes with binding of an endogenous nucleating polypeptide within the cell
Implementation Method 2
The agents effectively modulate gene expression by competing with endogenous nucleating polypeptides, altering the affinity and formation of anchor sequence-mediated conjunctions
Data Source
AI summary
The present disclosure provides compositions with a modulating gene expression and methods for modulating transcription.