Aptamer Biomarker Panels for Precise Sample Quality Assessment
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Solution Overview
Problem
Current methods for assessing sample quality in biomarker research are limited by pre-analytical variability, primarily relying on crude visual indicators, which compromises the reliability of protein measurements and biomarker analysis.
Innovation Solution
The use of biomarker panels comprising proteins sensitive to sample handling, detected through multiplex slow off-rate aptamer-based assays, to assess sample quality by measuring the levels of proteins such as C1GLC, ARL11, GFPT1, IF4A2, LONM, RBP56, RASN, RHG36, and FLII, and estimating the time elapsed between sample collection and centrifugation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual inspection methods are used to assess sample quality, then the assessment process is simple and quick, but the measurement precision and reliability are insufficient
Solution Approach 1:
The patent replaces the mechanical/visual inspection system with a biochemical detection system using aptamer-based assays. Instead of visually examining samples for obvious defects, the system uses molecular interactions between aptamers and target analytes to detect subtle changes in sample quality, thereby substituting a simple visual method with a more precise biochemical detection method.
Solution Approach 2:
The patent changes the detection parameters from macroscopic visual properties to microscopic molecular interactions. By measuring binding affinities, dissociation rates, and signal intensities at the molecular level, the system transforms the assessment from a crude visual check to a precise quantitative measurement of sample quality parameters.
2Reliability
If multiple biomarker proteins are detected using multiplex assays, then the sample quality assessment becomes more comprehensive and reliable, but the device complexity and assay complexity increase
Solution Approach 1:
The patent applies universality by designing a single multiplex assay platform that can simultaneously detect multiple biomarker proteins using different aptamers. The same basic assay infrastructure and detection system are used to measure various analytes (e.g., hemoglobin, lipid peroxidation products, cytokines), eliminating the need for separate assays for each marker and reducing overall system complexity despite the increased analytical capability.
Solution Approach 2:
The patent segments the detection task by using specific aptamers for each target biomarker protein. Each aptamer is designed to bind with high specificity to its target analyte, allowing parallel detection of multiple proteins in a single sample. This segmentation of detection functions into modular aptamer-target pairs enables comprehensive assessment while maintaining assay manageability.
3Measurement precision
If aptamer-based assays are used to detect biomarker proteins, then the measurement precision and sensitivity improve, but the use of energy and assay time increase
Solution Approach 1:
The patent applies self-service by utilizing the inherent binding affinity and specificity of aptamers for their target proteins. The aptamers automatically bind to their targets based on molecular complementarity without requiring external energy input or complex activation mechanisms. This self-assembling nature of the aptamer-target interaction reduces the energy requirements compared to systems that require powered actuators, heated reactions, or complex mechanical components.
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 allows for the identification of suitable samples for biomarker analysis by detecting inconsistencies in sample handling, thereby improving the reliability and consistency of protein biomarker discovery, diagnostic, and prognostic methods.
Implementation Method 1
multiplex slow off-rate aptamer-based assays
Data Source
AI summary
Biomarkers, methods, devices, reagents, systems, and kits used to assess the quality of a sample collected from a subject are provided. Such biomarkers, methods, devices, reagents, systems, and kits may be useful in evaluating acceptability of sample handling and/or consistency of sample handling across a plurality of samples.