ACE2 Bead Capture for Rapid Coronavirus Detection
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Solution Overview
Problem
Existing methods for detecting SARS-CoV-2 RNA viruses are complex, time-consuming, require specialized personnel, and often lead to false-negative results due to incorrectly taken samples, limited reagents, and the need for specialized laboratory equipment, failing to detect infectious virus particles effectively.
Innovation Solution
A method using ACE2 or ACE2 fusion proteins to bind SARS-CoV-2 viruses to beads, followed by staining with specific agents and detection via physical, chemical, or biological means, enabling rapid, high-throughput testing with minimal equipment and reagents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RT-PCR methods are used to detect SARS-CoV-2 RNA viruses, then detection sensitivity is improved, but the complexity of the device and time consumption increase significantly
Solution Approach 1:
The invention extracts only the essential detection function from the complex RT-PCR system by using ACE2 binding agents coupled to beads that directly capture viral particles, eliminating the need for nucleic acid extraction, amplification reagents, and specialized PCR equipment while maintaining detection sensitivity
Solution Approach 2:
The invention introduces ACE2 binding agents as intermediaries that mediate between the viral particles and the detection system. These agents specifically bind to viral surface proteins and transfer the viral signal to detectable beads, enabling simple yet sensitive detection without complex instrumentation
2Measurement precision
If RT-PCR methods are used to detect SARS-CoV-2 RNA viruses, then detection accuracy is improved, but the time required for testing increases to several days
Solution Approach 1:
The invention performs preliminary binding of viral particles to ACE2 agents on beads before detection. This pre-capture step concentrates the virus from large sample volumes and makes the subsequent detection immediate, eliminating the time-consuming amplification steps of RT-PCR while maintaining accuracy
Solution Approach 2:
The invention skips the intermediate amplification steps of RT-PCR by using direct binding and detection of viral particles on beads. This rushes through the detection process in a single step, reducing testing time from days to minutes while preserving detection accuracy through specific viral particle capture
3Adaptability or versatility
If RT-PCR methods are used to detect SARS-CoV-2 RNA viruses, then comprehensive pathogen detection is improved, but reagent availability and manufacturing ease worsen
Solution Approach 1:
The invention creates a universal detection platform where ACE2 binding agents on beads can detect different coronavirus variants and potentially other pathogens by changing only the binding agent specificity. This multi-functional approach eliminates the need for multiple specialized reagent sets required by panel diagnostics while maintaining comprehensive detection capability
Solution Approach 2:
The invention uses simple, inexpensive beads as disposable detection elements that can be mass-produced without complex reagent formulations. These beads serve as single-use detection devices that eliminate reagent shortages while maintaining detection versatility through different ACE2 agent couplings
4Productivity
If sample pooling is implemented to increase throughput, then productivity is improved, but the risk of false-negative results increases
Solution Approach 1:
The invention segments the detection process into viral particle capture on individual beads, which maintains the ability to detect low viral loads in pooled samples. Each bead acts as an independent detection unit, preserving sensitivity even when samples are combined, thus enabling high throughput without increasing false-negative rates
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
The method provides a simple, robust, and sensitive detection of SARS-CoV-2 RNA viruses, allowing for early identification of infectious individuals and preventing the spread of the virus without the need for amplification, reagent shortages, or specialized laboratories.
Implementation Method 1
coupling a binding agent selected from the group consisting of an angiotensin-converting enzyme 2 (ACE2), an ACE2 construct, an ACE2 fusion protein, or a modified or mutant ACE2 polypeptide or fusion protein that is capable of binding to a virus component to beads
Implementation Method 2
staining the viruses immobilised on the beads with a staining agent for viral RNA
Data Source
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AI summary
The present invention relates to kits and methods for the detection and enrichment of RNA viruses of the family Coronaviridae. The detection method comprises a. coupling a binding agent that specifically recognizes and binds to a virus component to a carrier material, b. incubating the carrier material with the thereon coupled binding agent with a virus- containing sample, c. staining the viruses immobilised on the carrier material with a staining agent, and d. detecting stained virus particles via a physical, chemical or biological detection means. The methods according to the invention are particularly suitable for the rapid and efficient detection of coronaviruses, such as SARS-CoV-2. With the methods and kits according to the invention, it is possible to perform rapid high-throughput tests in a large population. At the same time, the enrichment procedure makes it possible to enrich viral samples, e.g. from a throat swab of a patient, for use in a subsequent PCR.