Block Copolymer Immunoassay Reagents for Background Signal Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current diagnostic immunoassay compositions face challenges such as matrix effects, unspecific reactions, and significant background signals, which affect sensitivity, stability, accuracy, and reproducibility, particularly in point-of-care tests that require fast and automated processes.
Innovation Solution
A composition comprising Tris buffer compound, sodium chloride, and one or more block copolymers, which can be used as a buffer, diluent, or washing solution in immunoassays to minimize background signals and improve stability and reproducibility, optimized for use in point-of-care systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current compositions are used in immunoassays, then the assay can be conducted, but background signals are significant and sensitivity is reduced
Solution Approach 1:
The patent introduces block copolymers as intermediary substances in the assay composition. These copolymers act as mediators that interact with the matrix components and unspecific reactants, preventing them from generating background signals while allowing the specific analyte-antibody interactions to proceed. The block copolymer structure with hydrophobic and hydrophilic blocks enables it to sequester interfering substances, thereby improving sensitivity by reducing background noise.
Solution Approach 2:
The patent modifies the chemical composition parameters of the assay buffer by incorporating specific block copolymers at optimized concentrations. This parameter change transforms the composition from a standard buffer to an enhanced formulation that actively suppresses background signals. The addition of chaotropic agents and specific buffer components changes the physical-chemical parameters of the solution, creating an environment where unspecific reactions are minimized while maintaining assay functionality.
2Reliability
If traditional compositions are used, then the assay procedure is simple, but stability and reproducibility are poor
Solution Approach 1:
The patent creates a composite assay composition by combining multiple components: block copolymers, chaotropic agents, buffer compounds, and surfactants. This composite formulation integrates substances with different functions - the block copolymers provide structural organization and interfere with unspecific binding, chaotropic agents denature proteins to prevent aggregation, buffers maintain pH stability, and surfactants reduce surface tension. The synergistic interaction of these composite components achieves improved reproducibility and stability that cannot be obtained with single-component formulations.
3Loss of time
If point-of-care systems are designed with fast processing, then test time is reduced, but matrix effects and unspecific reactions increase
Solution Approach 1:
The patent applies preliminary action by incorporating block copolymers and chaotropic agents into the assay composition before the test is performed. These pre-added substances are ready to immediately counteract matrix effects and unspecific reactions as soon as the sample is introduced. The block copolymers are pre-positioned to interact with matrix components, and chaotropic agents are pre-dissolved to rapidly denature interfering proteins. This preliminary preparation eliminates the need for additional processing steps, maintaining fast test times while preventing harmful effects.
Data Source
AI summary
The present invention relates to compositions suitable for use in immunoassays and method of conducting immunoassays using compositions of the invention. The present invention relates to compositions comprising block co-polymers and/or chaotropic agents which are useful as buffer, diluent and/or washing solutions in immunoassays and immunoassay methods.