Split-and-Pool Barcoding for High-Throughput Interaction Screening
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Solution Overview
Problem
Conventional methods for screening libraries of molecules that bind to proteins or interfere with protein interactions are low-throughput, labor-intensive, and expensive, limiting the availability of high-quality affinity reagents for detecting protein-protein, protein-DNA, protein-RNA, and protein-small molecule interactions.
Innovation Solution
A method involving multiple iterations of split-and-pool barcoding, where macromolecules and candidate interaction partners are randomly distributed and barcoded with combinatorial barcode units, allowing for high-throughput identification of interacting molecules through the association of shared barcode sequences, enabling the detection of protein-protein, protein-DNA, and protein-RNA interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional screening methods are used to identify affinity reagents, then the screening process can be performed with simple equipment and procedures, but the throughput is low and the process is labor-intensive
Solution Approach 1:
The patent divides the screening process into multiple iterative rounds of split-and-pool barcoding. In each round, the library is partitioned into separate groups, barcoded with unique oligonucleotide sequences, and then pooled together. This segmentation approach enables high-throughput screening by processing billions of molecules across multiple rounds, transforming a low-throughput conventional method into a high-capacity parallel system that can handle complex libraries while maintaining manageable individual step complexity
Solution Approach 2:
The patent adds the dimension of molecular barcoding to the screening process. By attaching unique oligonucleotide barcode sequences to each molecule in the library, the system creates an information dimension that allows tracking and identification of individual molecules through multiple screening rounds. This dimensional addition enables the system to handle exponentially larger library sizes without proportionally increasing operational complexity, as barcodes provide automatic molecular identification
2Productivity
If conventional screening methods are used, then the procedure can be completed quickly with few steps, but the cost and labor requirements become prohibitive for large libraries
Solution Approach 1:
The patent implements continuous useful action by performing multiple iterative rounds of split-and-pool barcoding without interruption. Each round builds upon the previous round's barcoded library, with molecules accumulating barcodes across rounds while maintaining their binding properties. This continuous process allows the system to screen increasingly large libraries over time, with each iteration adding discriminatory power while the overall process remains streamlined and automated, reducing both time and labor costs despite increased screening capacity
Solution Approach 2:
The patent applies preliminary action by pre-barcoding molecules with oligonucleotide sequences before the actual screening interaction occurs. This preliminary barcoding allows molecules to be tracked and identified throughout the screening process without requiring post-screening identification steps. By establishing the barcode system in advance, the method enables continuous monitoring and analysis of binding events across multiple rounds, significantly reducing the time and labor needed for final identification of active compounds
Data Source
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AI summary
Methods of detecting an interaction between a macromolecule and an interaction partner are described. Kits are also described.