Lymphocyte Cytoplasm PCR for Low-Titer Lymphotropic Virus Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting viruses with lymphotropism properties, such as HBV, HCV, and HIV, suffer from false-negative results in enzyme immunoassay (EIA) and polymerase chain reaction (PCR) tests, especially when virus concentrations are low, and there is a need for improved techniques to reliably detect these viruses in biological materials.
Innovation Solution
A method involving the incubation of biological material with a lymphocyte suspension from healthy individuals, followed by PCR testing of the lymphocyte cytoplasm to detect viral RNA or DNA, indicating virus viability or inactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional EIA or PCR methods are used to detect viruses in biological substrates, then the detection process is simple and quick, but false-negative results occur when virus concentrations are low
Solution Approach 1:
The detection process is divided into multiple stages: initial PCR testing of biological substrate, followed by cell culture isolation if PCR is positive, then secondary PCR testing of cell culture supernatant. This segmentation allows each stage to complement the strengths and weaknesses of the previous stage, eliminating false negatives while maintaining operational feasibility
Solution Approach 2:
Cell culture isolation is performed as a preliminary action before final virus detection. By pre-concentrating and amplifying viral particles through cell culture propagation, the method ensures that even low-concentration viruses in the original sample are amplified to detectable levels before the final PCR testing stage
2Measurement precision
If cell culture isolation methods are used to detect viruses, then virus viability can be assessed, but the process is complex and time-consuming
Solution Approach 1:
The methodology segments the detection process into parallel tracks: rapid PCR testing for initial screening and cell culture isolation for viability confirmation. By organizing tests in sequential stages rather than requiring complete cell culture isolation for every sample, the method reduces overall detection time while preserving viability assessment capability for confirmatory testing
Solution Approach 2:
The method applies partial cell culture isolation only to PCR-positive samples rather than all samples. This partial action approach maintains the ability to assess virus viability through cell culture when needed, while avoiding the time cost of complete cell culture isolation for every test case
3Ease of operation
If EIA methods are used to detect viruses, then the test is rapid and easy to perform, but the sensitivity threshold limits detection of low-concentration viruses
Solution Approach 1:
The method merges multiple detection techniques (EIA, PCR, and cell culture isolation) into a comprehensive testing algorithm. By combining the simplicity of EIA for initial screening with the high sensitivity of PCR and the viability assessment of cell culture, the overall system achieves both ease of operation and high detection sensitivity
Solution Approach 2:
Cell culture isolation serves as an intermediary step between initial PCR detection and final virus confirmation. This intermediary amplifies low-concentration viral particles to detectable levels, enabling the system to overcome EIA's sensitivity threshold limitations while maintaining operational simplicity through structured testing protocols
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 enhances the reliability of virus detection by eliminating false-negative results and allows detection of viruses at concentrations below the sensitivity threshold of traditional EIA and PCR methods, providing a more accurate assessment of virus viability.
Implementation Method 1
incubation of biological material with a lymphocyte suspension from healthy individuals, followed by PCR testing of the lymphocyte cytoplasm
Implementation Method 2
PCR testing of the lymphocyte cytoplasm to detect viral RNA or DNA
Data Source
AI summary
Methods and techniques to increase the reliability of detecting virus infections, particularly lymphotropism, to eliminate false negative reactions in testing blood for the presence of lymphotropic viruses during enzyme immunoassay (EIA) and polymerase chain reaction (PCR) testing, and to better detect viruses with lymphotropism in biological materials having a concentration of virus particles lower than the sensitivity threshold of existing EIA and PCR methods, thereby making the techniques of the present invention more reliable.