Simultaneous Detection of Different Antibody Classes in a Multiplexed Serological Test
July 14th, 2023
A three-channel dual-reporter fluorescence flow analysis system was used to develop a bead-based multiplex immunoassay that simultaneously evaluates serum samples for IgG and IgM elicited against multiple antigens of different Borrelia species that cause Lyme borreliosis in Europe and North America.
Lyme borreliosis diagnostics is still suboptimal despite several years of research investigation and lacks sensitivity. With our dual-reporter multiplex Borrelia assay, we can identify immunoreactivity against different Borrelia species to discern early IgM and later, more durable, IgG immunoreactivity in patient samples. The Intelliflex instrument from Luminex with its multiplexing capability combined with its dual-reporter system is one of the state-of-the-art technologies to maximize information output using small volumes of donor material.
The dual-reporter immunoassay approach improves upon traditional immunoassays by simultaneously detecting both IgG and IgM antibodies against any of the implemented Borrelia antigens in human serum samples. In this way, we double the information we can extract from valuable sample material in one assay run. Our approach provides decisive Borrelia pathogen identification and sensitive detection of the early infection stage and the later, more durable, immunoreactivity at the same time.
Thus enabling cost, material, and time efficiency, as well as a more precise detection of Lyme borreliosis infection. Our assays support global serosurveillance and pathogen elimination strategies in identifying regional species distribution and infection sources. Our lab is involved in prophylactic and therapeutic vaccine development against several viral pathogens with a special focus on serological differentiation of vaccine versus infection immune response and deep immune response characterization.
Overview
This study presents a dual-reporter multiplex immunoassay for the detection of IgG and IgM antibodies against various Borrelia species responsible for Lyme borreliosis. The assay enhances diagnostic sensitivity and efficiency by allowing simultaneous analysis of multiple antigens in serum samples.
Key Study Components
Area of Science
- Immunology
- Infectious Diseases
- Diagnostic Technology
Background
- Lyme borreliosis diagnostics are currently inadequate in sensitivity.
- Traditional immunoassays often fail to provide comprehensive information.
- There is a need for improved methods to detect early and late-stage immune responses.
- Understanding regional species distribution is crucial for effective serosurveillance.
Purpose of Study
- To develop a more sensitive assay for detecting Borrelia infections.
- To differentiate between early IgM and later IgG responses in patients.
- To support global efforts in pathogen elimination and vaccine development.
Methods Used
- Utilization of a three-channel dual-reporter fluorescence flow analysis system.
- Bead-based multiplex immunoassay for simultaneous evaluation of antibodies.
- Analysis of serum samples from patients for multiple Borrelia antigens.
- Application of the Intelliflex instrument from Luminex for enhanced multiplexing.
Main Results
- The dual-reporter system allows for the detection of both IgG and IgM antibodies.
- Improved sensitivity in identifying early infections and durable immune responses.
- Efficient use of small sample volumes while maximizing information output.
- Supports the identification of regional species distribution and infection sources.
Conclusions
- The developed assay significantly enhances Lyme borreliosis diagnostics.
- It provides a cost-effective and time-efficient method for pathogen identification.
- Potential applications in vaccine development and serological differentiation.
