HIV-1 Detection Kit Using Fluorescent Probes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting HIV-1 are either insensitive or require skilled professionals and are time-consuming, lacking a reliable and accurate real-time detection solution.
Innovation Solution
A method involving RNA extraction from a sample, followed by a reaction mixture with uracil-N-glycosylase, DNA polymerase, reverse transcriptase, and nucleic acid probes with detectable markers, which undergo thermal cycling to amplify and detect HIV-1 target DNA sequences in real-time, using primers and probes specifically designed for HIV-1 detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If immunological methods using antibodies are used for HIV detection, then the method is widely applicable, but sensitivity is reduced compared to nucleic acid testing
Solution Approach 1:
The detection system is segmented into multiple functional components: reverse transcriptase for RNA-to-DNA conversion, DNA polymerase for amplification, and fluorescently labeled probes for detection. This segmentation allows each component to be optimized for its specific function while maintaining overall system sensitivity and applicability.
Solution Approach 2:
The patent introduces nucleic acid probes as intermediary elements that bridge the gap between sample RNA and detectable signal. These probes hybridize to complementary DNA sequences and carry fluorescent markers, enabling sensitive detection while maintaining broad applicability across different HIV strains.
2Measurement precision
If cultivated cells and nucleic acid probes are used for HIV detection, then detection accuracy is improved, but the method requires highly skilled professionals and is time-consuming
Solution Approach 1:
The patent merges reverse transcription and PCR amplification into a single reaction mixture, eliminating the need for separate cultivation steps and reducing the skill level required. The combination of reverse transcriptase, DNA polymerase, and probes in one tube simplifies the procedure while maintaining high detection accuracy.
Solution Approach 2:
The reagents are pre-prepared and optimized for simultaneous operation. The reaction mixture contains all necessary components (enzymes, nucleotides, probes, buffers) in predetermined concentrations, allowing the procedure to be performed by technicians with minimal training rather than requiring highly skilled professionals.
3Reliability
If traditional HIV detection methods are used, then the procedure is established, but the process is time-consuming and lacks real-time detection capability
Solution Approach 1:
The patent implements continuous real-time monitoring of the PCR amplification process using fluorescent probes. The detection occurs continuously throughout the amplification cycles rather than requiring endpoint analysis, enabling real-time detection while maintaining the reliability of established PCR methodology.
Solution Approach 2:
The patent replaces traditional mechanical/chemical detection methods with fluorescent optical detection. The fluorescently labeled probes emit light signals that can be detected in real-time during amplification, eliminating the need for time-consuming post-amplification processing and enabling rapid results.
4Measurement precision
If PCR amplification is used for HIV detection, then sensitivity is improved, but the complexity of the reaction mixture and procedure increases
Solution Approach 1:
The patent employs a universal reaction buffer and enzyme system that can detect multiple HIV-1 subtypes simultaneously. The primers and probes are designed to target conserved regions of the HIV genome, allowing a single reaction mixture formulation to achieve high sensitivity across diverse viral strains without increasing procedural 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
Enables fast, accurate, and sensitive real-time detection of HIV-1, allowing for the quantification of HIV-1 RNA in samples with high throughput capabilities.
Implementation Method 1
mixing the RNA with a uracil-n-glycosylase, DNA polymerase, reverse transcriptase
Implementation Method 2
a specific portion of a nucleic acid sequence is amplified exponentially in a suitable reaction mixture containing at least DNA polymerase and template specific primers
Implementation Method 3
the nucleic acid sequences within the probe can form a RNA:DNA heteroduplex with the complimentary DNA sequences in the PCR fragment
Implementation Method 4
detecting a real-time increase in the emission of a signal from the label on the probe
Implementation Method 5
thermally cycling the amplification medium between at least a denaturation temperature and an elongation temperature
Data Source
AI summary
A method is described for the real-time detection of HIV-1 gene target DNA in a sample, including obtaining HIV-1 specific cDNA by reverse transcription, amplifying a portion of the cDNA, and detecting the amplicons so produced using probe labeled with a detectable marker.