Immunoglobulin Amplification
Immunoglobulin Amplification - Related Videos
04:48
A Paper-Based Immunoassay for the Detection of Immunoglobulin G
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2025
The video demonstrates a paper-based immunoassay, involving amine-functionalized cellulose discs cross-linked with glutaraldehyde. Covalent immobilization of IgG-Fc-specific capture antibodies, followed by the introduction of immunoglobulin G and horseradish peroxidase-conjugated detection antibodies, results in a color change confirming the presence of immunoglobulin G.
09:44
Rapid Amplification of cDNA Ends
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2023
Source: Pablo Sanchez Bosch2, Sean Corcoran2 and Katja Brückner1,2,3 1Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research 2Department of Cell and Tissue Biology, 3Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, USA Rapid Amplification of cDNA Ends (RACE) is a technique that allows amplification of full-length cDNA from mRNA by extending to the 3’ or 5’ end, even without prior knowledge of the sequence (Frohman et al.,...
03:31
A Microfluidic Cartridge-Based Detection System for Allergen-Specific Immunoglobulin E
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2025
This video demonstrates a protocol for detecting serum-specific immunoglobulin E using a microfluidic cartridge-based chemiluminescence system. Serum IgEs interact with distinct allergens immobilized in the reaction zone of the cartridge, which are subsequently detected with peroxidase-conjugated anti-IgE antibodies and a chemiluminescent substrate, allowing simultaneous detection of multiple allergen-specific IgEs.
04:51
Measuring Immunoglobulin G Levels Against a Test Vaccine in a Mouse Serum
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2025
This video demonstrates a method for assessing the antibody immune response to a novel nanoemulsion adjuvant vaccine in pre-immunized mice. Immunization enhances antibody response as confirmed by determining the IgG antibody titers.
04:21
An Assay to Detect Serum Anti-aquaporin-4 Immunoglobulin G
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2025
The video demonstrates a cell-based assay for detecting anti-aquaporin-4 immunoglobulin G using a biochip containing untransfected cells and transfected cells expressing aquaporin-4. This method has applications in diagnosing neuromyelitis optica spectrum disorders, confirmed by strong green fluorescence on the biochip.
FAQs
Conserved framework regions provide relatively stable primer-binding sites on either side of variable immunoglobulin genes. This placement allows amplification to capture the variable sequences that encode differences among antibodies while still using a common targeting strategy. Consequently, the resulting products can be examined for antibody diversity and related patterns without focusing on only one predetermined antibody sequence.
Each PCR cycle contributes a defined stage to selective copying. Denaturation separates the DNA strands, primer annealing allows the framework-targeting primers to bind, and extension copies the intervening immunoglobulin sequence. Repeating these stages increases the amount of target sequence available for detection and analysis, making antibody-encoding material more accessible for repertoire and sequence studies.
Sequence patterns can be interpreted at several levels rather than as a single antibody measurement. They may indicate the breadth of B-cell antibody diversity, expansion of related clones, or changes in the repertoire after an immune event. This distinction helps connect molecular sequence results with how adaptive immune responses develop in immunology and infection studies.
A basic workflow begins with immunoglobulin-encoding DNA or RNA, uses primers directed at conserved framework regions, and applies repeated PCR cycles to increase the selected sequences. The amplified material is then detected and analyzed as sequence information. This workflow links target selection, controlled copying, and downstream interpretation, rather than treating amplification as the final experimental result.
Immunoglobulin Amplification is especially useful when a study needs to compare antibody repertoires across conditions such as pathogen exposure or vaccination. Researchers can examine the amplified sequences for differences in diversity, B-cell clonal expansion, or response-associated changes. Those comparisons provide a molecular view of adaptive immunity within infection-focused research.
Beyond repertoire description, the resulting sequences can support antibody characterization and immune monitoring. They also provide a molecular foundation for diagnostic development and for investigating how adaptive immunity recognizes infectious agents. The value lies in connecting sequence-level evidence with questions about antibody properties, immune-state changes, and host responses to exposure or vaccination.