Project description:To understand the mechanisms through which JunB regulates Tregs-mediated immune regulation, we examined the global gene expression profiles in the JunB WT and KO Tregs by performing RNA sequencing (RNA-seq) analysis.
Project description:LSEC fom WT and Bmp9-KO 25-weeks female mice were isolated using collagenase and treated for bulk RNAsequencing. The objective was to determine the biological processes that are altered in Bmp9-KO compared to WT, as BMP9 is know to be a vascular quiescence factor produced by hepatic stellate cells. RNAseq reads were trimmed to remove possible adapter sequences and nucleotides with poor quality using Trimmomatic v.0.36 16. The trimmed reads were mapped to the Mus Musculus MM10 reference genome available on ENSEMBL using the STAR aligner v.2.5.2b 17. Unique gene hit counts were calculated by using ‘featureCounts’ from the Subread package v.1.5.2 WT samples are F126, F121, F120, F119, F135 KO samples are F131, F132, F124 and F133
Project description:The adenosine 2A receptor (A2AR) is expressed on regulatory T cells (Tregs), but the functional significance is currently unknown. We compared the gene expression between wild-type (WT) and A2AR knockout (KO) Tregs and between WT Tregs treated with vehicle or a selective A2AR agonist. FACS-sorted GFP positive Tregs from WT or A2AR KO FoxP3GFP mouse spleen and lymph nodes were incubated 18 hr with vehicle (DMSO), a separate set of WT Tregs were incubated with the selective A2AR agonist ATL1222 10 nM (Dogwood Pharmaceuticals, Inc.) for 18 hr prior to RNA isolation.
Project description:Foxp3-expressing regulatory T (Treg) cells are critical mediators of immunological tolerance to both self and microbial antigens. Tregs activate context-dependent transcriptional programs to adapt effector function to specific tissues; however, the factors controlling tissue-specific gene expression in Tregs remain unclear. Here, we find that the AP-1 transcription factor JunB regulates the intestinal adaptation of Tregs by controlling select gene expression programs in multiple Treg subsets. Treg-specific ablation of JunB results in immune dysregulation characterized by enhanced colonic T helper cell accumulation and cytokine production. However, in contrast to its classical binding-partner BATF, JunB is dispensable for maintenance of effector Tregs as well as most specialized Treg subsets. In the Peyer’s patches, JunB activates a transcriptional program facilitating the maintenance of CD25- Tregs, leading to the complete loss of T follicular regulatory cells in the absence of JunB. This defect is compounded by loss of a separate effector program found in both major colonic Treg subsets that includes the cytolytic effector molecule granzyme B. Therefore, JunB is an essential regulator of intestinal Treg effector function through pleiotropic effects on gene expression.
Project description:Tregs from spleen and thymus of naive Wild-type mice and mice lacking Dendritic Cells (deltaDC) were analyzed. Thymus derived Tregs of both strains show similar expression patterns, peripheral splenic Tregs from deltaDC mice differ from Tregs of WT mice.
Project description:Donminant negative transform growth factor receptor II (DNR) mice were served as a murine primary biliary cirrhrosis model. CD4+Foxp3+ Regulatory T cells (Tregs) play a critical role in self-tolerance and in regulating PBC. In order to determine whether DNR mice derived Tregs processed defective function compared with WT Tregs, CD4+Foxp3+ Treg cells were sorted from DNR and WT mice, respectively, then gene expression analysis was performed by using the Affymetrix GeneChip Mouse Genome 430 2.0 arrays CD4+Foxp3+ Tregs were sorted from the spleen of 10-week-old DNR mice and B6 wild-type mice, respectively. RNA of each sample was then extracted and hybridized on Affymetrix microarrays to detail differences between DNR Tregs and WT Tregs in gene expression.
Project description:The adenosine 2A receptor (A2AR) is expressed on regulatory T cells (Tregs), but the functional significance is currently unknown. We compared the gene expression between wild-type (WT) and A2AR knockout (KO) Tregs and between WT Tregs treated with vehicle or a selective A2AR agonist.
Project description:By RNA-sequencing, we compared four different bone marrow (BM)-derived Tregs, and found that the gene expression profile from No Tumor transplanted group and ST2-KO Tregs tansplanted group shown similar pattern, while WT Treg and Tbet-KO Tregs transplanted group shown the similar trend.