Oligonucleotide Hybridization for Temporal Effector Control
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Solution Overview
Problem
Current genetic approaches lack temporal control over the presentation of effector proteins to cells, which is crucial for modulating cellular behavior and tissue function.
Innovation Solution
A composition comprising a solid support with tethered oligonucleotides and untethered oligonucleotides that hybridize to generate an enzyme cleavage site, allowing for temporally controlled removal of effector molecules, thereby modulating cell activity and phenotype.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional genetic approaches (constitutive knockdown/knockouts and overexpression) are used to perturb signaling dynamics, then genetic modification is achieved, but temporal control over effector protein presentation is lost
Solution Approach 1:
The system pre-assembles effector proteins with tethered oligonucleotides and positions them on solid supports before the experiment begins. The untethered oligonucleotides are prepared in advance with complementary sequences that will generate enzyme cleavage sites upon hybridization. This preliminary preparation enables rapid temporal control when the actual modulation is needed.
Solution Approach 2:
Oligonucleotide hybrids serve as intermediaries that bridge the solid support-bound effector proteins and the soluble enzymes. The tethered oligonucleotide on the solid support hybridizes with the untethered oligonucleotide, creating a temporary hybrid structure that positions the enzyme cleavage site precisely where needed for temporal control of effector protein release.
2Duration of action of moving object
If effector molecules are continuously presented to cells, then cell modulation is maintained, but temporal precision is reduced
Solution Approach 1:
The system enables periodic presentation and removal of effector molecules through controlled hybridization and cleavage cycles. Effector proteins can be presented by adding untethered oligonucleotides that hybridize to tethered oligonucleotides, and removed by adding enzymes that cleave the hybrids. This periodic action provides both duration control and temporal precision.
Solution Approach 2:
The system transitions from static effector protein presentation to dynamic, reversible presentation. The effector molecules are not permanently fixed but can be dynamically added and removed through controlled hybridization and enzymatic cleavage, enabling precise temporal modulation of their presentation duration.
3Ease of operation
If enzyme cleavage sites are generated through oligonucleotide hybridization, then temporal control of effector molecule removal is achieved, but system complexity increases
Solution Approach 1:
The system replaces complex mechanical or genetic control mechanisms with simple biochemical hybridization and enzymatic cleavage reactions. Instead of using complex genetic circuits or mechanical release systems, the invention uses the natural specificity of nucleic acid hybridization and enzyme-substrate recognition to achieve precise temporal control, simplifying the overall system architecture.
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
Enables precise temporal control over cell behavior and phenotype modulation, addressing the limitations of traditional genetic methods by allowing for the controlled presentation and removal of effector molecules.
Implementation Method 1
Hybridization of an untethered oligonucleotide to a tethered oligonucleotide generates an enzyme cleavage site
Data Source
AI summary
The present disclosure provides a composition comprising a solid support, a plurality of tethered oligonucleotides attached to the solid support, and a plurality of untethered oligonucleotides hybridized to the tethered oligonucleotides. An untethered oligonucleotide can comprise, attached via the 5′ end, a cell, or an effector molecule. Hybridization of an untethered oligonucleotide to a tethered oligonucleotide generates an enzyme cleavage site, which allows for temporally controlled removal of an effector molecule. The present disclosure provides methods of temporally modulating the activity and/or phenotype of a cell. The present disclosure provides a solid support comprising patterned tethered oligonucleotides attached thereto; and methods of making the solid support.