What is TCR transgenic mice?
These TCR Tg mice allow researchers to efficiently study T cell-mediated immune responses according to antigen-specific TCR activity by synchronizing all T cell responses to one epitope [4].
How are mice used in transgenic research?
Transgenic mice are made by using glass micropipettes to inject a solution that contains DNA from a chosen source into the nucleus of a fertilized mouse egg. At times, the foreign DNA will be integrated successfully into the chromosomes of the mouse-egg nucleus. The eggs are then transferred to a foster female mouse.
What are HLA transgenic mice?
Transgenic mice that express human HLA molecules represent a unique in vivo experimental model for evaluating human immune system function. These models have been used to study the role of the human class I or class II restricted T cell repertoire in autoimmune disease, infectious disease, and vaccine development.
What does the term transgenic refer to?
Transgenic refers to an organism or cell whose genome has been altered by the introduction of one or more foreign DNA sequences from another species by artificial means. Transgenic organisms are generated in the laboratory for research purposes.
Why are transgenic mice important?
Genetically modified mice are used extensively in research as models of human disease. Mice are a useful model for genetic manipulation and research, as their tissues and organs are similar to that of a human and they carry virtually all the same genes that operate in humans.
How transgenic mice are created?
Typically, transgenic mice are generated by microinjecting the transgenic construct into a fertilized egg (oocyte or zygote). An alternative way to effectively introduce a transgene into an egg is the use of a retrovirus vector.
Why are mice so important to research?
The mouse has many similarities to humans in terms of anatomy, physiology and genetics. The mouse genome is very similar to our own, making mouse genetic research particularly useful for the study of human diseases. Mice are cost effective because they are cheap and easy to look after. Adult mice multiply quickly.
What is the purpose of transgenic animals?
Transgenesis allows improvement of nutrients in animal products, including their quantity, the quality of the whole food, and specific nutritional composition. Transgenic technology could provide a means of transferring or increasing nutritionally beneficial traits.
Which is the best example of a transgenic organism?
Transgenic organisms have also been developed for commercial purposes. Perhaps the most famous examples are food crops like soy and corn that have been genetically modified for pest and herbicide resistance. These crops are widely known as “GMOs” (genetically modified organisms).
Why study T cell receptor (TCR) Tg mice?
T cell receptor (TCR) Tg mice are extremely useful in studying T cell-mediated immune responses because the majority of T cells in these mice express specific TCRs for partner antigens.
How can transgenic mice be used to study viral pathogenesis?
Remarkable progress in transgenic (Tg) techniques has enabled scientists to more readily understand the mechanisms of viral pathogenesis. T cell receptor (TCR) Tg mice are extremely useful in studying T cell-mediated immune responses because the majority of T cells in these mice express specific TCRs for partner antigens.
What is the function of T-cell receptors?
The T-cell receptor (TCR) is unique in its complexity. It determines not only positive (life) and negative (death) selection in the thymus, but also mediates proliferation, anergy, differentiation, cytotoxicity and cytokine production in the periphery.
What’s new in TCR biology?
The analysis of TCR biology has been revolutionized by the development of TCR transgenic mice, which express a single clonotypic T-cell population, with diverse specificities and genetic backgrounds.