What are RAG1 knockout mice?
RAG-1-deficient mice have small lymphoid organs that do not contain mature B and T lymphocytes. The arrest of B and T cell differentiation occurs at an early stage and correlates with the inability to perform V(D)J recombination. The immune system of the RAG-1 mutant mice can be described as that of nonleaky scid mice.
What are NRG mice?
These NRG mice are NOD-congenic mice harboring the Rag1null mutation (Rag1KO or Rag1tm1Mom) on chromosome 2 and the IL2rγnull mutation (IL2RγcKO or Il2rgtm1Wjl) on the X chromosome. These NRG mutant mice are also called NOD-Rag1null IL2rγnull double mutant mice or NOD.
What are rag -/- mice?
“Rag-deficient” mice are mice that fail to express functional Rag1 or Rag2 proteins. Like the Prkdc gene, both Rag1 and Rag2 are required for somatic recombination of TCR and Ig genes, and the absence of either gene results in T and B cell deficiency.
What is RAG mouse?
What are RAG2 mice?
RAG2 knock-out mice produce no mature T cells or B cells. Their phenotype can be described as a “non-leaky” immune deficiency. These mice may be useful in the study of hematopoietic and immune system defects, cancer, toxicology, and xenograft/transplant studies.
What does Rag1 and RAG2 do?
Abstract. The RAG1 and RAG2 proteins initiate V(D)J recombination by introducing double-strand breaks at the border between a recombination signal sequence (RSS) and a coding segment.
What is the phenotype of rag-1-deficient mice?
Creation of a large genom deletion at the T-cell antigen receptor Phenotype of RAG-1-Deficient Mice 877 p-subunit locus in mouse embryonic stem cells by gene targeting. Proc. Natl. Acad. Sci.
What happens if RAG1 is not present?
In the absence of Rag1 or Rag2, lymphocyte development is arrested resulting in T- and B-cell deficiency. Rag1 knockout (Rag1 KO) mice have been extremely useful to study the role of the immune system in cancer, immunodeficiency disorders, inflammatory conditions, autoimmune diseases, lymphoid tissue pathologies, and graft versus host disease.
What is Rag1 deletion?
Defects in this gene can cause several different diseases. Because of these effects, Rag1 deletion is used in mouse models of disease to impair T cell and B cell development, and functionally deletes mature T and B cells from the immune system. In humans, RAG deficiency was first recognised as a form of immune dysregulation known as Omenn syndrome.
What is RAG1 and RAG2?
Mice deficient in recombination-activating genes 1 and 2 ( RAG1 and RAG2) are considered a robust model to study the immune response in whole organisms. This is based on the immunologic concept that Rag1 and Rag2 are essential regulators of genes that encode immunoglobulin and TCR (T-cell receptor).