One-Step Bioluminescent Kinase Assay for Rapid Diagnostics
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Solution Overview
Problem
Conventional reporter kinase systems for detecting kinase activity are cumbersome and slow due to a two-step bioluminescent assay process, which is not suitable for rapid point-of-care diagnostics, as they require a significant incubation period and are prone to interference from non-reporter kinases and endogenous ATP.
Innovation Solution
A one-step bioluminescent assay is developed by contacting reporter kinase with ADP and a bioluminescent reagent simultaneously, with prior removal or inactivation of non-reporter kinases and endogenous ATP to enhance sensitivity and speed, using techniques such as thermal denaturation, chemical denaturation, or specific inhibitors to ensure accurate kinase activity detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a two-step bioluminescent assay process is used to detect kinase activity, then measurement precision is improved, but loss of time increases significantly due to required incubation periods
Solution Approach 1:
The patent merges the two separate reaction steps (kinase reaction and bioluminescent reaction) into a single simultaneous reaction step. ADP and bioluminescent reagent are added together to the sample containing reporter kinase, allowing both reactions to occur concurrently without sequential incubation periods, thereby dramatically reducing detection time while maintaining accuracy through the use of thermostable kinases from extremophiles
2Measurement precision
If a two-step assay with incubation period is used, then measurement precision is improved, but device complexity increases due to multiple操作步骤
Solution Approach 1:
The patent combines multiple operational steps (addition of ADP, incubation, addition of bioluminescent reagent) into a single simplified step where ADP and bioluminescent reagent are added simultaneously. This merging eliminates the need for separate incubation periods and multiple addition steps, reducing procedural complexity from two steps to one step while maintaining detection accuracy through thermostable kinase enzymes
Solution Approach 2:
The patent employs thermostable kinases from extremophiles that have been pre-selected and optimized for stability at elevated temperatures. This preliminary selection of robust enzymes allows the reaction to proceed accurately in a single step without requiring controlled incubation conditions, thereby simplifying the assay procedure while maintaining measurement precision
3Measurement precision
If conventional reporter kinase systems are used for field detection, then ease of operation is reduced due to cumbersome two-step process, but measurement precision is maintained
Solution Approach 1:
The patent merges the complex two-step laboratory procedure into a single simultaneous reaction step suitable for field conditions. By adding ADP and bioluminescent reagent together and allowing concurrent reaction, the assay becomes much easier to perform in the field without requiring multiple操作步骤 or controlled incubation, while thermostable kinases ensure measurement precision is maintained
Solution Approach 2:
The thermostable kinases from extremophiles possess inherent stability and robustness that allow the reaction to proceed autonomously under varied field conditions without requiring precise temperature control or multiple intervention steps. This self-service capability of the enzyme enables simple single-step operation in the field while maintaining accurate kinase activity detection
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 significantly reduces the detection time and improves the accuracy of kinase activity assays, making it suitable for rapid point-of-care diagnostics by eliminating the need for lengthy incubation periods and minimizing interference from contaminants.
Implementation Method 1
The activity of these reporter kinases is typically detected using an ATP bioluminescence system (e.g. luciferin-luciferase), which generates a light output signal
Implementation Method 2
The activity of these reporter kinases is typically detected using an ATP bioluminescence system (e.g. luciferin-luciferase), which generates a light output signal
Data Source
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AI summary
An assay is provided for detecting the activity of a reporter kinase comprising (i) adding said reporter kinase to an assay mixture wherein said reporter kinase is contacted with bioluminescent reagent no more than minutes after being contacted with ADP, and wherein, prior to contacting the reporter kinase with ADP, the assay mixture is substantially free from kinase other than reporter kinase; and (ii) detecting light output from the assay mixture. Methods for detecting the presence of an analyte in a sample and methods for validating a treatment process using the above assay are also provided. Further provided are devices for conducting these assays and methods.