Immunoglobulin Cloning
Immunoglobulin Cloning - Related Videos
09:55
Molecular Cloning
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2023
Molecular cloning is a set of methods, which are used to insert recombinant DNA into a vector - a carrier of DNA molecules that will replicate recombinant DNA fragments in host organisms. The DNA fragment, which may be a gene, can be isolated from a prokaryotic or eukaryotic specimen. Following isolation of the fragment of interest, or insert, both the vector and insert must be cut with restriction enzymes and purified. The purified pieces are joined together though a technique called...
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.
01:27
Reproductive Cloning
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2019
Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT). Somatic Cell Nuclear Transfer In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
05:21
Culturing and Harvesting of HSPC Clones: A Method to Obtain the Singly-Sorted HSPC Clones
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2023
This video describes the protocol for isolating HSPCs from the bone marrow and sorting them using a fluorescent activated cell sorting technique, which is a method to obtain singly-sorted HSPCs. We culture these sorted cells to obtain HSPC clones.
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.
FAQs
The heavy- and light-chain variable regions together encode the antibody’s antigen-recognition properties. Capturing both gene segments preserves the chain combination associated with a particular specificity, allowing recombinant host cells to assemble an immunoglobulin with defined binding characteristics. This molecular linkage makes it possible to relate antibody sequence information to antigen recognition and compare antibodies produced during different immune responses.
A heavy-chain variable region and a light-chain variable region contribute jointly to antigen recognition, so analyzing only one chain may not represent the original antibody. Immunoglobulin cloning retains the selected chain pairing for expression and study. That preserves a defined molecular reagent for examining antibody–antigen interactions, comparing immune responses, or evaluating recognition of pathogen- or toxin-associated targets.
The expression vector carries the amplified immunoglobulin gene sequences into a host-cell system capable of producing the recombinant antibody. Its role connects the selected genetic information with cellular expression, chain assembly, and secretion. As a result, researchers can obtain immunoglobulins with known sequences and antigen specificity rather than relying on an incompletely defined mixture of antibodies.
Cloned immunoglobulins provide separate, defined antibody reagents that can be examined individually. Researchers can compare their antigen recognition and other antibody–antigen interactions across responses, including responses associated with infection or vaccination. Because each reagent corresponds to selected immunoglobulin gene sequences, observed differences can be related to particular antibodies instead of being obscured within a complex antibody population.
A typical workflow begins by obtaining antibody-producing material from B cells or hybridomas. The relevant heavy- and light-chain variable-region genes are then captured and amplified before insertion into expression vectors. Host cells receive the resulting constructs, assemble the chains, and secrete recombinant immunoglobulins. The workflow therefore connects biological source material to defined antibody production for downstream study.
In infection research, cloned immunoglobulins can be used to characterize interactions with pathogen or toxin antigens and to evaluate neutralization. In broader immunology, they support comparisons of immune responses and vaccine-induced protection. The same defined reagents also contribute to diagnostic reagent development, therapeutic antibody development, and standardized experiments requiring consistent antibody specificity.