Mass Spectrometry-Encoded Synthetic Compound Libraries for Binding Assays
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Solution Overview
Problem
Existing methods for forming and screening libraries of compounds, such as oligomers or polymers, face limitations in identifying and sequencing compounds due to interference from coding techniques like Edman chemistry and ladder sequencing, which can affect binding assays.
Innovation Solution
A library of synthetic compounds is designed using logic circuitry to select molecules with distinguishable mass spectrometry characteristics, allowing each molecule to be assigned a position in a sequence, enabling mass spectrometry to identify the compound's composition by mapping molecular weights, fragmentation patterns, and isotope distributions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Edman chemistry or ladder sequencing is used for structural determination, then compound identification is achieved, but the coding interferes with the binding assay
Solution Approach 1:
The patent extracts the coding function from the compound structure itself and places it in a separate encoding bead or tag system. The compound of interest is isolated from its coding sequence, allowing the binding assay to proceed without interference while the separate encoding information is used for identification after the assay.
Solution Approach 2:
The system segments the identification and binding functions into separate components: the compound maintains its native structure for binding assays, while a separate encoding bead or tag carries the identification information. This segmentation eliminates the conflict between structural determination and biological activity measurement.
2Measurement precision
If traditional sequencing methods are used, then compound structure is determined, but processing time and resource requirements increase
Solution Approach 1:
The patent replaces traditional mechanical/chemical sequencing methods (Edman chemistry, ladder sequencing) with mass spectrometry-based identification. The encoding beads carry mass-spectrometry-detectable tags that allow rapid identification of compounds without time-consuming sequential degradation or chemical modification steps.
Solution Approach 2:
The encoding information is pre-attached to the compound or its container before the binding assay. This preliminary encoding allows for rapid post-assay identification using mass spectrometry, eliminating the need for time-consuming sequencing procedures performed after the assay.
3Productivity
If libraries of 10^8 to 10^9 compounds are screened, then high-throughput capability is achieved, but detection sensitivity becomes limited by technology constraints
Solution Approach 1:
The patent introduces encoding beads or tags as intermediary carriers that link the compound identity to mass-spectrometry-detectable signals. These intermediaries amplify the detectability of individual compounds within large libraries, allowing mass spectrometry to distinguish between 10^8 to 10^9 different compounds while maintaining detection sensitivity through the use of multiple detectable tags per compound.
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
This approach reduces processing and memory resources required for compound identification, allowing for high-throughput screening of 10^8 to 10^9 compounds, with detection sensitivities limited by mass spectrometry technology, and enables the formation of libraries on micron-sized beads for diagnostic and functional applications.
Implementation Method 1
molecules having mass spectrometry characteristics that identify the molecule and the position of the molecule in the sequence of the compound
Data Source
AI summary
Embodiments in accordance with the present disclosure are directed to polymer beads and uses thereof, including forming libraries of compounds for screening and assay purposes. An example method includes using logic circuitry to: select a plurality of molecules that include a plurality of subgroups, each of the plurality of molecules exhibiting a mass spectrometry characteristic that is distinguishable from mass spectrometry characteristics of other molecules of the plurality, and assign the plurality of molecules with a position in a sequence of a plurality of synthetic compounds forming a library. The method further includes defining, as data in a memory circuit of the logic circuitry, the plurality of synthetic compounds that are sequenceable via mass spectrometry using the assigned positions of the plurality of molecules for communicating to other circuitry for formation thereof via coupling chemistry or screening of a particular function.