Polyspecificity Reagents for Antibody Developability Screening
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Solution Overview
Problem
Current methods for developing therapeutic antibodies face challenges due to polyspecificity, leading to poor pharmacokinetics, stability, and solubility issues, which are not effectively addressed in early discovery stages, resulting in high resource expenditure and low success rates in downstream development.
Innovation Solution
The development of polyspecific reagents (PSRs) that can be used to select, assess, and enrich for developable polypeptides by detecting polyspecific polypeptides through interaction with a mixture of biomolecules, allowing for counter-selection and enrichment of antibodies with improved developability characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antibody discovery methods are used, then diverse antibody candidates can be generated, but polyspecificity and off-target binding cannot be detected early, leading to poor developability
Solution Approach 1:
The patent applies preliminary action by implementing polyspecificity reagents and screening assays during early discovery stages to detect polyspecific and off-target binding before antibodies progress to downstream development. This early detection prevents resources from being invested in antibodies with poor developability characteristics, resolving the contradiction between generating diverse candidates and ensuring reliable developability.
Solution Approach 2:
The patent uses polyspecificity reagents as intermediaries that contain multiple binding partners representing different target classes. These reagents mediate the detection of polyspecificity by enabling simultaneous assessment of antibody binding across multiple targets, allowing early identification of antibodies with poor specificity without requiring extensive downstream testing.
2Measurement precision
If downstream development activities are performed on all discovered antibodies, then comprehensive assessment is achieved, but resource expenditure is high due to poor success rates
Solution Approach 1:
The patent implements preliminary screening using polysspecificity reagents and automated assays before antibodies enter resource-intensive downstream development. This preliminary assessment filters out antibodies with poor developability characteristics early, preventing waste of resources on candidates likely to fail later stages while maintaining comprehensive assessment through automated high-throughput methodologies.
Solution Approach 2:
The patent replaces manual, resource-intensive downstream development activities with automated high-throughput screening systems. Automated liquid handling robots, plate readers, and data analysis systems substitute for labor-intensive processes, enabling comprehensive assessment of multiple antibody candidates simultaneously with reduced resource expenditure and increased efficiency.
3Reliability
If early detection methods are implemented, then polysspecific antibodies can be identified, but additional screening steps increase process complexity
Solution Approach 1:
The patent applies universality by designing polyspecificity reagents that contain multiple binding partners representing different target classes within a single reagent formulation. This multi-functional approach allows simultaneous detection of polysspecificity across multiple targets using a single assay platform, reducing the need for separate screening tests for each target class and simplifying the overall process despite enhanced detection capabilities.
Solution Approach 2:
The patent utilizes parameter changes by optimizing assay conditions such as incubation times, temperatures, and reagent concentrations to enable reliable polysspecificity detection within high-throughput formats. By adjusting these parameters, the method achieves accurate detection without requiring proportionally increased assay complexity or extended processing times.
Data Source
AI summary
The present invention relates, inter alia, to polyspecificity reagents, methods of making the same, and methods of using the same in, inter alia, the selection, screening, enrichment, and identification of non-polyspecific, and thus developable, polypeptides.