Project description:Total pancreatic RNA was isolated from 3 week old NOD.scid, NOD, BDC2.5/NOD and BDC2.5/NOD.scid animals by GITC method. Targets were produced using standard Affymetrix procedures from about 10ug total RNA. The data from NOD.scid, NOD, BDC2.5/NOD and BDC2.5/NOD.scid Affymetrix MGU74Av2 cel files was converted into Robust Multi Array (RMA) text file for analysis using GeneSpring 6.1 Keywords: other
Project description:BDC2.5/NOD mice were treated with cyclophosphamide to induce type 1 diabetes. Their pancreatic islets were analyzed before treatment (Day 0) and as treatment progressed (Days 1 through 3) Keywords = type I diabetes Keywords = cyclophosphamide Keywords = BDC2.5 Keywords = NOD Keywords = pancreas Keywords = islets Keywords: time-course
Project description:We identified DCIR2+DCs but not DEC205+DCs as able to induce peripheral T cell tolerance in pre-diabetic autoimmune NOD mice. To determine what distinct genetic programs are elicited in the auto-reactive CD4 T cells early after stimulation by these two DC subsets, we utilized adoptive transfer of BDC2.5 CD4 T cells into NOD mice, which were then given chimeric antibody to deliver the beta-cell specific antigen to either DCIR2+DCs or DEC205+DCs, leading to BDC2.5 CD4 T cell specific stimulation in vivo. The analysis shows that the negative transcriptional factor Zbtb32 (ROG) is up-regulated more in BDC2.5 CD4 T cells after stimulated with a antigen via DCIR2+DCs presentation, compared with DEC205+DCs, suggesting the involvement of Zbtb32 in DCIR2+DCs-mediated auto-reactive T cell tolerance in disease ongoing NOD mice. The BDC2.5 CD4 T cells after 14 hour of injection with a 100 ng of anti-DCIR2-BDC, anti-DEC205-BDC antibody, or PBS as a control to NOD mice, were sorted by BD FACSAria and their expression profile was analyzed using Affymetrix chips.
Project description:Total pancreatic RNA was isolated from 3 week old NOD.scid, NOD, BDC2.5/NOD and BDC2.5/NOD.scid animals by GITC method. Targets were produced using standard Affymetrix procedures from about 10ug total RNA. The data from NOD.scid, NOD, BDC2.5/NOD and BDC2.5/NOD.scid Affymetrix MGU74Av2 cel files was converted into Robust Multi Array (RMA) text file for analysis using GeneSpring 6.1
Project description:We identified DCIR2+DCs but not DEC205+DCs as able to induce peripheral T cell tolerance in pre-diabetic autoimmune NOD mice. To determine what distinct genetic programs are elicited in the auto-reactive CD4 T cells early after stimulation by these two DC subsets, we utilized adoptive transfer of BDC2.5 CD4 T cells into NOD mice, which were then given chimeric antibody to deliver the beta-cell specific antigen to either DCIR2+DCs or DEC205+DCs, leading to BDC2.5 CD4 T cell specific stimulation in vivo. The analysis shows that the negative transcriptional factor Zbtb32 (ROG) is up-regulated more in BDC2.5 CD4 T cells after stimulated with a antigen via DCIR2+DCs presentation, compared with DEC205+DCs, suggesting the involvement of Zbtb32 in DCIR2+DCs-mediated auto-reactive T cell tolerance in disease ongoing NOD mice. The BDC2.5 CD4 T cells after 14 hour of injection with a 100 ng of anti-DCIR2-BDC, anti-DEC205-BDC antibody, or PBS as a control to NOD mice, were sorted by BD FACSAria and their expression profile was analyzed using Affymetrix chips. NOD mice with transferred BDC2.5 T cell were injected with 100 ng of anti-DCIR2-BDC (NOD_DCIR2-BDC), anti-DEC205-BDC antibody (NOD_DEC-BDC), or PBS (NOD_PBS) as a control. After 14 hours, BDC2.5 CD4 T cells were sorted by BD FACSAria and their expression profile was analyzed using Affymetrix microarray chips. Each sample has a biological duplicate. Raw data were preprocessed with the RMA algorithm in Partek, and averaged expression values were used for analysis.
Project description:Comparison of gene expression between T regulatory and T effector cells isolated from the pancreatic lesion of 3-4 wk old BDC2.5 tg NOD mice Keywords: cell type comparison
Project description:Introgressed variants from other species can be an important source of genetic variation because they may arise rapidly, can include multiple mutations on a single haplotype, and have often been pretested by selection in the species of origin. Although introgressed alleles are generally deleterious, several studies have reported introgression as the source of adaptive alleles-including the rodenticide-resistant variant of Vkorc1 that introgressed from Mus spretus into European populations of Mus musculus domesticus. Here, we conducted bidirectional genome scans to characterize introgressed regions into one wild population of M. spretus from Spain and three wild populations of M. m. domesticus from France, Germany, and Iran. Despite the fact that these species show considerable intrinsic postzygotic reproductive isolation, introgression was observed in all individuals, including in the M. musculus reference genome (GRCm38). Mus spretus individuals had a greater proportion of introgression compared with M. m. domesticus, and within M. m. domesticus, the proportion of introgression decreased with geographic distance from the area of sympatry. Introgression was observed on all autosomes for both species, but not on the X-chromosome in M. m. domesticus, consistent with known X-linked hybrid sterility and inviability genes that have been mapped to the M. spretus X-chromosome. Tract lengths were generally short with a few outliers of up to 2.7 Mb. Interestingly, the longest introgressed tracts were in olfactory receptor regions, and introgressed tracts were significantly enriched for olfactory receptor genes in both species, suggesting that introgression may be a source of functional novelty even between species with high barriers to gene flow.
Project description:Gene expression profiling of BDC2.5 CD4T cells isolated from NOD mice after in vivo antigen stimulation with either DEC205+ or DCIR2+ DCs.