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DR3 (TRAMP, LARD, WSL-1, TNFRSF25) is a death-domain-containing tumor necrosis factor (TNF)-family receptor primarily expressed on T cells. TL1A, the TNF-family ligand for DR3, can costimulate T cells, but the physiological function of TL1A-DR3 interactions in immune responses is not known. Using DR3-deficient mice, we identified DR3 as the receptor responsible for TL1A-induced T cell costimulation and dendritic cells as the likely source for TL1A during T cell activation. Despite its role in costimulation, DR3 was not required for in vivo T cell priming, for polarization into T helper 1 (Th1), Th2, or Th17 effector cell subtypes, or for effective control of infection with Toxoplasma gondii. Instead, DR3 expression was required on T cells for immunopathology, local T cell accumulation, and cytokine production in Experimental Autoimmune Encephalomyelitis (EAE) and allergic lung inflammation, disease models that depend on distinct effector T cell subsets. DR3 could be an attractive therapeutic target for T cell-mediated autoimmune and allergic diseases.
Pubmed ID: 18571443 RIS Download
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These Brainbow 1.0 (founder line L) mice allow labeling of individual neuronal types (specifically hippocampal neuron cell bodies, and including motor neurons, dentate gyrus granule cells, pyramidal neurons of the cortex and CA1 area) with approximately 166 distinguishable color variations in cre recombined cells, and may also be useful in conjunction with other Brainbow strains (Stock No. 007901, Stock No. 007911, Stock No. 007921) for neurobiological studies. These Thy1-Brainbow 1.0 (line L) transgenic mice are viable and fertile. The mice possess multiple fluorescent protein sequences uniquely flanked with pairs of incompatible Lox sites alternated to create mutually exclusive recombination events; allowing stochastic expression of multiple fluorescent proteins from a single transgene. Prior to Cre-mediated recombination, the fluorescent protein immediately adjacent to the promoter, dTomato (RFP), is expressed in peripheral and central neurons. When bred to Cre recombinase expressing mice, the resulting offspring can have one of three expression outcomes for each transgene in each cell of the cre expressing tissue(s): dTomato (RFP) (no recombination), mCerulean (CFP), or mYFP. Integration of tandem transgene copies yields combinatorial fluorescent protein expression in each cell, and thus many possible cell colors, providing a way to distinguish adjacent neurons and visualize other cellular interactions. Of note, the single FRT site inserted in the transgene allows tandem transgene copy number reduction through Flp-mediated recombination if desired. These Brainbow 1.0 (founder line L) mice were found to have multiple transgene copies that allow labeling of individual neuronal types (specifically hippocampal neuron cell bodies, and including motor neurons, dentate gyrus granule cells, pyramidal neurons of the cortex and CA1 area) with approximately 166 distinguishable color variations in cre recombined cells, and may also be useful in conjunction with other Brainbow strains (Stock No. 007901, Stock No. 007911, Stock No. 007921) for neurobiological studies. This mouse can be used to support research in many areas including:
Neurobiology Research
* Cre-lox System (loxP-flanked Sequences)
* Fluorescent protein expression in neural tissue
Research Tools
* Cre-lox-System (loxP-flanked Sequences: Test/Reporter)
* Developmental Biology Research (Cre-lox system)
* Developmental Biology Research (transplantation marker for embryonic and adult tissue)
* FLP-FRT System (FRT-flanked Sequences)
* Fluorescent Proteins * Genetics Research (Mutagenesis and Transgenesis: Cre-lox system) * Genetics Research (Tissue/Cell Markers: Cre-lox system) * Genetics Research (Tissue/Cell Markers: astrocyte-specific marker) * Genetics Research (Tissue/Cell Markers: astrocytes) * Genetics Research (Tissue/Cell Markers: astrocytes, neurons) * Genetics Research (Tissue/Cell Markers: glial cells) * Genetics Research (Tissue/Cell Markers: multiple) * Genetics Research (Tissue/Cell Markers: neurons) * Genetics Research (Tissue/Cell Markers: transplantation marker for embryonic and adult tissue) * Neurobiology Research (astrocyte-specific marker) * Neurobiology Research (cell marker) * YFP related Research Tools * Fluorescent Proteins Control: 000664 C57BL/6J (approximate)
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