Scaffold-Linked Antibody Complexes for Low-Affinity Antigen Detection
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Solution Overview
Problem
In immunological analysis methods, the affinity of antibodies with antigens affects detection sensitivity, leading to potential dissociation and insufficient detection sensitivity, especially when multiple antibodies are used.
Innovation Solution
A method involving a complex configuration where plural antibodies are bound to each other via a scaffold compound, such as a biotin-binding protein, to enhance detection sensitivity without requiring high antibody-antigen affinity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an antibody with low affinity for antigen is used, then the complexity of antibody selection is reduced and cost is lowered, but the antibody dissociates from the antigen leading to insufficient detection sensitivity
Solution Approach 1:
The patent combines multiple antibodies (at least two) into a single complex that collectively binds to the antigen. This merging of multiple binding units compensates for the low affinity of individual antibodies, achieving sufficient detection sensitivity without requiring high-affinity antibodies, thereby resolving the contradiction between measurement precision and reliability
Solution Approach 2:
The invention creates a composite antibody complex consisting of multiple antibody molecules assembled together. This composite structure provides enhanced binding stability to the antigen compared to single antibodies, while allowing the use of lower-affinity antibody components, thus resolving the contradiction between detection sensitivity and binding stability
2Measurement precision
If multiple antibodies are used to improve detection sensitivity, then the measurement precision is improved, but the device complexity and reagent preparation complexity increase
Solution Approach 1:
The patent performs preliminary assembly of multiple antibodies into a pre-formed complex before the actual immunological analysis. This preliminary action simplifies the overall process by eliminating the need to handle and coordinate multiple separate antibodies during analysis, reducing device and procedural complexity while maintaining enhanced detection sensitivity
Solution Approach 2:
The antibody complex serves multiple functions simultaneously: it provides enhanced binding stability, maintains detection sensitivity, and simplifies the analysis protocol. This multi-functionality resolves the contradiction by achieving improved measurement precision without proportionally increasing device complexity
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 improves detection sensitivity by increasing the likelihood of antibody rebinding to antigens, allowing for favorable detection even with antibodies having low affinity, and enables efficient development of immunological analysis reagents.
Implementation Method 1
the binding via the scaffold compound is a binding via biotin
Data Source
AI summary
An immunological analysis method, including a process of binding an antibody to an antigen, the antibody being included in a complex, and the complex including a labeling substance and having a configuration in which plural antibodies are bound to each other via a scaffold compound.