Recombinant gp36 Antigen Design for Sensitive HIV-2 Antibody Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The hydrophobic nature of the HIV gp36 protein makes it difficult to prepare products with good detection performance for HIV-2 antibody detection.
Innovation Solution
A recombinant antigen based on a gp36 protein sequence (SEQ ID NO: 1) is used, which can include specific segments of the gp36 protein and may have cysteine mutations, fused with a fusion partner, and conjugated with a tracer marker or solid-phase carrier, within a reagent/kit for HIV detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gp36 protein is used directly for HIV-2 antibody detection, then the detection target is covered, but the hydrophobic nature of the protein makes it difficult to prepare products with good detection performance
Solution Approach 1:
The gp36 protein is divided into multiple epitope segments (first epitope, second epitope, third epitope) that are then combined in different configurations to create multiple recombinant antigens. This segmentation allows the hydrophobic protein to be broken into manageable pieces that can be effectively used in detection while maintaining the necessary immunogenicity.
Solution Approach 2:
Multiple epitope segments from the gp36 protein are combined to form composite recombinant antigens with different structures and properties. These composite antigens (with varying epitope combinations) provide diverse detection capabilities that overcome the limitations of using the complete hydrophobic gp36 protein directly.
2Measurement precision
If multiple recombinant antigens with different epitope combinations are prepared, then detection coverage and performance are improved, but the complexity of antigen preparation increases
Solution Approach 1:
The gp36 protein is divided into multiple epitope segments (first epitope, second epitope, third epitope) that can be independently combined. This segmentation creates a modular system where different epitope combinations can be systematically prepared to achieve comprehensive detection coverage while maintaining organized preparation procedures.
Solution Approach 2:
The multiple recombinant antigens with different epitope combinations serve multiple detection purposes simultaneously. Each antigen configuration targets different aspects of HIV-2 antibody detection, providing universal coverage across various detection scenarios and improving overall detection reliability without requiring entirely separate preparation 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
The recombinant antigen achieves high sensitivity and specificity in detecting HIV-2 antibodies, with improved thermal stability through cysteine mutations, and can be used in immunoassays like ELISA and colloidal gold immunochromatography.
Implementation Method 1
The recombinant antigen achieves high sensitivity and specificity in detecting HIV-2 antibodies
Data Source
Figure 1
AI summary
Provided is an HIV recombinant antigen for detecting an HIV antibody, which belongs to the technical field of immunodiagnosis. The present application specifically relates to an HIV recombinant antigen, a nucleic acid molecule, an expression vector, a host cell, a reagent, a kit, and uses thereof. In the present invention, the recombinant HIV antigen protein is used in a label end, which can significantly improve the marker activity of the recombinant HIV antigen, reduce non-specific immune binding activity, and enhance sensitivity.