Silent Nanoscale Carriers for Synergistic Ligand Screening
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Solution Overview
Problem
Existing methods struggle to efficiently identify synergistic interactions between multiple ligands and their targets due to the complexity of screening large molecule libraries, which often require compromising library size or suffer from steric interference and unwanted interactions, making it difficult to determine synergistic or cooperative binding.
Innovation Solution
The use of silent carriers, such as viruses or phages, encoded with unique nucleic acid codes of identical composition, allows for the creation of mixed libraries where ligands are attached to these carriers, enabling simple mixing and screening for synergistic interactions by pooling and sequencing nucleic acids from bound carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If spatially-separated libraries are used for ligand screening, then individual ligand binding can be identified, but the complexity scales exponentially when screening for synergistic interactions
Solution Approach 1:
The patent merges multiple ligands onto a single nanoscale carrier (bead), creating a unified structure that presents multiple ligands simultaneously to the target protein. This combining approach allows synergistic interactions to be detected without requiring separate testing of all possible ligand pairs, thus reducing the exponential complexity while maintaining measurement precision for binding identification.
2Adaptability or versatility
If large libraries are screened for synergistic interactions, then comprehensive binding profiles can be obtained, but steric interference and unwanted interactions with tagging molecules increase
Solution Approach 1:
The patent extracts the tagging molecule (DNA barcode) from the ligand structure itself, placing it on a separate nanoscale carrier rather than attaching it directly to the ligand. This separation removes the harmful steric interference and unwanted interactions that tagging molecules cause during screening, while still allowing for comprehensive binding profile assessment through the barcode system.
3Ease of manufacture
If micron-sized beads are used for molecule display, then molecules can be immobilized for screening, but the bead size precludes simultaneous binding of distinct molecules to one protein target
Solution Approach 1:
The patent changes the size parameter of the carrier from micron-scale to nanoscale (approximately 100 nm diameter). This size reduction allows the carrier to physically fit within the binding site of a protein target, enabling simultaneous binding of multiple distinct ligands to a single protein target while maintaining ease of manufacture through established nanoscale bead production methods.
Data Source
AI summary
The present application provides a method of producing a “liquid” array of ligand (such as glycan) modified bacteriophage where the ligand modification is encoded genetically within the bacteriophage genome. This method will allow for the determination of the ligand binding profile of biomacromolecules and cells. Furthermore the method allows the elucidation of ligand-protein interactions where ligand binding is co-operative and synergistic.