Project description:To better understand the function of CD4+CD25+ splenocytes from different ages, target cells from young(8-week old) aged(18-month old) were sorted with magnetic beads. We then performed gene expression profiling analysis using data obtained from RNA-seq of different cells from different age.
Project description:Comparison of gene expression profile of CD4+ CD25+, CD4+ CD25- CD45RBlow LAG3+ and CD4+ CD25- CD45RBlow LAG3- T cells. Naive CD4+CD25-CD45RBhigh T cells were used as a reference for pair comparison with values from the three other subsets.
Project description:The objective of the present study was to characterize the phenotype of CD4+CD25+Foxp3+ regulatory T cells (Tregs) in the course of parasitic Plasmodium yoelii (P .yoelii) infection of BALB/c mice. Therefore we performed microarray expression analysis of CD4+CD25+Foxp3+ Tregs isolated by FACS from spleens of non-infected mice and from spleens of mice infected with P. yoelii 3 days and 5 days post infection. By comparing the gene expression profiles, we were able to identify molecules which were differentially expressed by Tregs during parasitic infection and thereby might be involved in their immune-suppressive function. Moreover, we included CD4+CD25-Foxp3- T cells from spleens of non-infected and P. yoelii-infected mice in our analysis. It was proposed that immune-suppressive CD4+CD25-Foxp3- T cells might be induced during Plasmodium infection of mice. Thus, detailed gene expression data of these cells in comparison to CD4+CD25+Foxp3+ Tregs would contribute a better understanding in the phenotype. FACS sorted CD4+CD25+Foxp3+ Tregs and CD4+CD25-Foxp3- T cells from pooled spleens of non-infected Foxp3/ eGFP mice (served as reference) and from pooled spleens of P. yoelii infected Foxp3/ eGFP mice 3 days and 5 days post infection were analyzed as single probes.
Project description:The objective of the present study was to characterize the phenotype of CD4+CD25+Foxp3+ regulatory T cells (Tregs) in the course of parasitic Plasmodium yoelii (P .yoelii) infection of BALB/c mice. Therefore we performed microarray expression analysis of CD4+CD25+Foxp3+ Tregs isolated by FACS from spleens of non-infected mice and from spleens of mice infected with P. yoelii 3 days and 5 days post infection. By comparing the gene expression profiles, we were able to identify molecules which were differentially expressed by Tregs during parasitic infection and thereby might be involved in their immune-suppressive function. Moreover, we included CD4+CD25-Foxp3- T cells from spleens of non-infected and P. yoelii-infected mice in our analysis. It was proposed that immune-suppressive CD4+CD25-Foxp3- T cells might be induced during Plasmodium infection of mice. Thus, detailed gene expression data of these cells in comparison to CD4+CD25+Foxp3+ Tregs would contribute a better understanding in the phenotype.
Project description:The NOD (nonobese diabetic) mouse strain develops a characteristic autoimmune syndrome that closely resembles human type I diabetes. It has been suggested that NOD mice exhibit both numerical deficiency in CD4+CD25+ regulatory T cells (Treg) and reduced suppressive activity. We compared sorted CD4+CD25+ Tregs from the spleens of 6-7 week-old female NOD and nondiabetic B6.H2g7 mice. Tregs were 93±2% and 95±1% Foxp3+ in NOD and B6.H2g7 cells, respectively, on post-sort reanalysis. "Conventional" CD4+CD25- T cells (Tconv) are included as reference populations. Surprisingly, Treg "signature" is similar between the two strains, with only a few probesets that subtly deviate. Keywords: Cell population comparison from two mouse strains. For each strain (NOD and B6.g7), we analyzed two populations: CD4+CD25+ Treg and CD4+CD25- Tconv cells, for a total of four distinct populations. RNA from three mice were pooled for each replicate; there are three independent replicates for each population. After RMA normalization, intensity values were averaged across the three replicates and analyzed. We calculated the ratio of Treg/Tconv intensity values for each strain and compared the results.
Project description:Lymphocytes are adversely affected during sepsis. Some CD4+ splenocytes undergo apoptosis while others become Th2 polarized. The molecular determinants of these phenotypic changes are not known. Here we compare the transcriptional response of septic CD4 splenocytes to CD4 splenocytes from sham-manipulated animals 6h after sepsis and identify an early transcriptional component to the septic CD4+ splenocyte phenotype. We used microarrays to detail the global program of gene expression underlying the sepsis-induced changes in CD4+ splenocyte phenotype. Keywords: disease state analysis
Project description:The NOD (nonobese diabetic) mouse strain develops a characteristic autoimmune syndrome that closely resembles human type I diabetes. It has been suggested that NOD mice exhibit both numerical deficiency in CD4+CD25+ regulatory T cells (Treg) and reduced suppressive activity. We compared sorted CD4+CD25+ Tregs from the spleens of 6-7 week-old female NOD and nondiabetic B6.H2g7 mice. Tregs were 93±2% and 95±1% Foxp3+ in NOD and B6.H2g7 cells, respectively, on post-sort reanalysis. "Conventional" CD4+CD25- T cells (Tconv) are included as reference populations. Surprisingly, Treg "signature" is similar between the two strains, with only a few probesets that subtly deviate. Keywords: Cell population comparison from two mouse strains.
Project description:A comparison of CD4+CD25+ and CD4+CD25- splenic T cells. Although both subsets have regulatory T cell activity in an induced transplantation tolerance model, the CD4+CD25+ subsets are apparently 10 fold enriched in regulatory T cells. SAGE analysis is performed and compared both on resting and CD3 activated populations. Keywords: other
Project description:Single cell transcriptomic analysis of human CD25+ CD127- CD4+ Treg cells and CD25- CD127+ CD4+ Tconv cells isolated from peripheral blood from two different donors