Antigen Array Bead Immobilization for Multiplexed Immunoassay
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Solution Overview
Problem
Current diagnostic technologies for allergies and immunological conditions face challenges in achieving high multiplexing, reproducibility, and cost-effectiveness while maintaining sensitivity and specificity, particularly when dealing with heterogeneous antigens and complex biological samples.
Innovation Solution
An antigen array comprising groups of antigen-coated beads immobilized on a solid support, allowing for individually optimized coupling of antigens and a two-phase coupling approach that amplifies the antigen-presenting surface, combined with advanced automation and software solutions for improved assay performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antigens are tested simultaneously using conventional ELISA, then the number of test parameters increases, but the technical performance and sensitivity decrease due to heterogeneous antigen properties
Solution Approach 1:
The invention segments each antigen onto separate beads, allowing individual optimization of coupling conditions for each antigen while maintaining the ability to test multiple antigens simultaneously. This resolves the contradiction by enabling high multiplexing (35) while preserving technical performance (28) through antigen-specific bead coupling.
Solution Approach 2:
Different beads are coated with different antigens under optimized local conditions specific to each antigen's properties. This local quality approach allows each antigen to be presented in its optimal configuration, maintaining high measurement precision across multiple test parameters.
2Ease of manufacture
If conventional ELISA is used for multi-parameter testing, then cost per test decreases, but sensitivity and specificity are compromised
Solution Approach 1:
Beads serve as intermediary carriers that enable antigens to be presented in a format that maintains their immunological activity. This intermediary approach allows sensitive and specific antibody detection while keeping the overall system cost-effective through automated bead-based processing.
Solution Approach 2:
The invention changes the physical state and presentation parameters of antigens by coating them on beads, which enhances their immunological activity and enables sensitive detection. This parameter change allows maintenance of high sensitivity and specificity while reducing cost per test through automated processing.
3Device complexity
If antigens are directly immobilized on solid phase, then the assay procedure is simplified, but the antigen-presenting surface is insufficient and coupling optimization is limited
Solution Approach 1:
The invention transitions from two-dimensional direct immobilization on solid phase to three-dimensional bead-based presentation. This dimensional change dramatically increases the antigen-presenting surface area while maintaining assay simplicity through automated bead handling and reading.
Solution Approach 2:
Antigens are nested on beads, which are then immobilized on the solid support. This nested structure allows multiple antigens to be presented with high surface area while the entire array is simplified for automated processing, resolving the contradiction between complexity and surface area.
4Ease of manufacture
If heterogeneous antigens are handled with identical coupling conditions, then the manufacturing process is simplified, but the coupling efficiency and reproducibility decrease
Solution Approach 1:
The coupling process is segmented into antigen-specific steps where each antigen is coated on its own beads under optimized conditions, then all beads are pooled and immobilized together. This segmentation enables high coupling efficiency (29) for each antigen while maintaining manufacturing simplicity (32) through automated processing.
Solution Approach 2:
Antigens are pre-coated on beads under optimized conditions before final immobilization on the solid support. This preliminary action allows maximum coupling efficiency for each antigen type while the subsequent pooling and immobilization steps simplify the overall manufacturing process.
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 solution enables sensitive and robust antibody detection with improved reproducibility and technical performance, facilitating comprehensive and cost-effective high-resolution screening for allergies and other immunological conditions.
Implementation Method 1
groups of antigen-coated beads immobilized on a solid support
Data Source
AI summary
The present invention relates to antigen arrays and methods for the detection of immunoglobulins specific for any one of the antigens of the array in a biological sample. Specifically, the present invention relates to antigen arrays comprising groups of antigen-coated beads fixed on a solid support. Further encompassed herein are cartridges, kits and an apparatus comprising the antigen array and methods of using same.