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Phenotypes Associated with This Genotype
Genotype
MGI:3807551
hm2
Allelic
Composition
Lattm1.1Mal/Lattm1.1Mal
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lattm1.1Mal mutation (0 available); any Lat mutation (8 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• CD4 T cells from these mice transferred into T cell deficient hosts initially proliferate slowly but continue proliferating unabated until abnormally high numbers of T cells are found
• 8 weeks after transfer, 13-fold higher number of T cells are found compared to controls that received wild-type CD4 T cells
• this proliferation is not Class II-restricted as mutant T cells also expand greatly in Class II deficient hosts
• proliferation of mutant CD4 T cells transferred to immunodeficient hosts is dependent on IL-7
• wild-type regulatory T cells are able to limit proliferation of mutant CD4 T cells in immunodeficient hosts
• CD4 T cells from these mice transferred into T cell deficient hosts cause a massive resident B cell response with IgG1 and IgE hypergammaglobulinemia resulting 8 weeks after transfer
• serum levels of IgG1 and IgE reach concentrations that are 84-fold and 8460-fold higher, respectively, compared with T cell deficient mice that receive wild-type CD4 T cells

hematopoietic system
• CD4 T cells from these mice transferred into T cell deficient hosts initially proliferate slowly but continue proliferating unabated until abnormally high numbers of T cells are found
• 8 weeks after transfer, 13-fold higher number of T cells are found compared to controls that received wild-type CD4 T cells
• this proliferation is not Class II-restricted as mutant T cells also expand greatly in Class II deficient hosts
• proliferation of mutant CD4 T cells transferred to immunodeficient hosts is dependent on IL-7
• wild-type regulatory T cells are able to limit proliferation of mutant CD4 T cells in immunodeficient hosts
• CD4 T cells from these mice transferred into T cell deficient hosts cause a massive resident B cell response with IgG1 and IgE hypergammaglobulinemia resulting 8 weeks after transfer
• serum levels of IgG1 and IgE reach concentrations that are 84-fold and 8460-fold higher, respectively, compared with T cell deficient mice that receive wild-type CD4 T cells

cellular
• CD4 T cells from these mice transferred into T cell deficient hosts initially proliferate slowly but continue proliferating unabated until abnormally high numbers of T cells are found
• 8 weeks after transfer, 13-fold higher number of T cells are found compared to controls that received wild-type CD4 T cells
• this proliferation is not Class II-restricted as mutant T cells also expand greatly in Class II deficient hosts
• proliferation of mutant CD4 T cells transferred to immunodeficient hosts is dependent on IL-7
• wild-type regulatory T cells are able to limit proliferation of mutant CD4 T cells in immunodeficient hosts


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
10/07/2025
MGI 6.24
The Jackson Laboratory