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Histone Deacetylase 3 is required for efficient T cell development

ABSTRACT: Hdac3 is an important target of HDAC inhibitors used in the treatment of cutaneous T cell lymphoma. In order to gain an understanding of Hdac3 function in T cells,we deleted Hdac3 from early mouse thymocytes using LCK-Cre. Hdac3 deletion resulted in a loss of single positive thymocytes due to a defect in positive selection at the double positive (DP) stage of thymocyte development. To better characterize this defect, we sorted the DP1 and DP2 populations to for gene expression profiling.

ORGANISM(S): Mus musculus

PROVIDER: GSE72917 | GEO | 2015/09/11

SECONDARY ACCESSION(S): PRJNA295318

REPOSITORIES: GEO

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Histone Deacetylase 3 is required for efficient T cell development

Project description:Hdac3 is an important target of HDAC inhibitors used in the treatment of cutaneous T cell lymphoma. In order to gain an understanding of Hdac3 function in T cells,we deleted Hdac3 from early mouse thymocytes using LCK-Cre. Hdac3 deletion resulted in a loss of single positive thymocytes due to a defect in positive selection at the double positive (DP) stage of thymocyte development. To better characterize this defect, we sorted the DP1 and DP2 populations to for gene expression profiling. Total RNA was extracted from DP1 (GFP+CD4+CD8+CD5loTCRblo) or DP2 (GFP+CD4+CD8+CD5hiTCRbint) thymocytes isolated by FACS from Hdac3+/+ or Hdac3F/F LCK-Cre+ animals. Libraries were constructed from rRNA-depleted total RNA pools to identify altered gene expression in DP populations following Hdac3 deletion.

2015-09-11 | E-GEOD-72917 | biostudies-arrayexpress

Gene Expression of Double Positive LCK:Hdac3 KO 3w old mice

Project description:Analysis of gene expression in double positive (DP) thymoctes from 3w old LCK Hdac3 conditional KO mice. In this data set we sorted GFP double positive (DP) thymocytes from 3w old mice to identify possible signaling and transcripitonal programs that might explain the DP to single positive block in cell maturation

2015-09-29 | GSE73533 | GEO

HDAC3 restrains cytokine signaling during thymocyte development for the generation of CD4 T cells (RNA-Seq)

Project description:CD4 and CD8 T cells are vital components of the immune system. According to the kinetic signaling model, commitment to the CD4 or CD8 lineage is determined by whether persistent TCR signaling or cytokine signaling predominates, respectively. We found histone deacetylase 3 (HDAC3) is critical for the development of CD4 T cells, as its deletion leads to the generation of only CD8SP thymocytes. In the absence of HDAC3, MHC Class II-restricted OT-II thymocytes are redirected to the CD8 cytotoxic lineage. Analysis of histone acetylation and RNA-seq reveals HDAC3-deficient DP thymocytes are biased towards the CD8 lineage prior to positive selection. In addition, HDAC3-deficient DP thymocytes have increased IL-21R expression and STAT5 activation. As a result, HDAC3 is required to restrain cytokine signaling in DP thymocytes and is required for the generation of CD4 T cells.

2019-01-20 | GSE109530 | GEO

HDAC3 restrains cytokine signaling during thymocyte development for the generation of CD4 T cells (ChIP-Seq)

2019-01-20 | GSE109529 | GEO

Analysis of Differentially Expressed Genes in sorted CD69+ double positive (DP) thymocytes from wild type (WT) and NSRP1CD4Cre (KO) mice

Project description:NSrp70 deficiency (NSRP1f/fCD4Cre) profoundly perturbed the late development of DP thymocytes, leading to a significant reduction of single positive (SP) cells in the thymus and peripheral lymphoid tissues. To gain further insight into how NSrp70 controls thymocyte development from CD69+ DP stage, we performed RNA-seq analysis after sorting CD69+ DP thymocytes from WT and Nsrp1 cKO mice.

2020-06-27 | GSE153389 | GEO

Analysis of Differentially Expressed Genes in sorted CD4+ CD8+ doubl positive (DP) thymocytes from wild type (WT) and NSRP1CD4Cre (KO) mice

Project description:NSrp70 deficiency (NSRP1f/fCD4Cre) profoundly perturbed the late development of DP thymocytes, leading to a significant reduction of single positive (SP) cells in the thymus and peripheral lymphoid tissues. To gain further insight how NSrp70 controls thymocyte development from DP stage, we performed RNA-seq analysis after sorting DP thymocytes from WT and Nsrp1 cKO mice.

2021-06-15 | GSE168379 | GEO

Development of Double-positive Thymocytes at Single-cell Resolution

Project description:We applied single-cell sequencing to mouse thymocytes and analyzed the transcriptome data using Seurat. By applying unsupervised clustering, we defined thymocyte subtypes and validated DP cell subtypes by flow cytometry. We classified the cell cycle phases of each cell according to expression of cell cycle phase-specific genes. For immune synapse detection, we used immunofluorescent staining and ImageStream-based flow cytometry. We studied and integrated human thymocyte data to verify the conservation of our findings and also performed cross-species comparisons to examine species-specific gene regulation. We classified blast, rearrangement and selection subtypes of DP thymocytes and used the surface markers CD2 and Ly6d to identify these subtypes by flow cytometry. Based on this new classification, we found that the proliferation of blast DP cells is quite different from that of double-positive cells and other cell types, which tend to exit the cell cycle after a single round. At the DP cell selection stage, we observed that CD8-associated immune synapses formed between thymocytes, indicating that CD8sp selection occurred among thymocytes themselves. Moreover, cross-species comparison revealed species-specific transcription factors (TFs) that contribute to the transcriptional differences of thymocytes from humans and mice. Our study classified DP thymocyte subtypes of different developmental stages and provided new insight into the development of DP thymocytes at single-cell resolution, furthering our knowledge of the fundamental immunological process of thymopoiesis.

2021-02-13 | GSE166715 | GEO

LCK-mediated RIPK3 Activation Controls Double-Positive Thymocyte Proliferation and Restrains Thymic Lymphoma by Regulating the PP2A-ERK Axis

Project description:Receptor-interacting protein kinase 3 (RIPK3) is the primary regulator of necroptotic cell death. RIPK3 expression is often silenced in various cancer cells, which suggests that it may have tumor suppressor properties. However, the exact mechanism by which RIPK3 negatively regulates cancer development and progression remains unclear. This report indicates that RIPK3 acts as a potent regulator of homeostatic proliferation of CD4+CD8+ double-positive (DP) thymocytes. Abnormal proliferation of RIPK3-deficient DP thymocytes occurs independently of the well-known role for RIPK3 in necroptosis (upstream of MLKL activation), and is associated with an incidental thymic mass, likely thymic hyperplasia. In addition, Ripk3-null mice developed increased thymic tumor formation accompanied by reduced host survival in the context of a N-ethyl-N-nitrosourea (ENU)-induced tumor model. Moreover, RIPK3 deficiency in p53-null mice promoted thymic lymphoma development via upregulated ERK signaling, which correlated with markedly reduced survival rates. Mechanistically, lymphocyte-specific protein tyrosine kinase (LCK) activates RIPK3, which in turn leads to increases in the phosphatase activity of protein phosphatase 2 (PP2A), thereby suppressing hyper-activation of ERK in DP thymocytes. Overall, these findings suggest that a RIPK3-PP2A-ERK signaling axis regulates DP thymocyte homeostasis and may provide a potential therapeutic target to improve thymic lymphoma therapies.

2022-09-18 | GSE213606 | GEO

Transcription profiling of human fetal thymocytes and circulating naive T cells

Project description:Subpopulations of human fetal thymocyte and circulating naÃ¯ve T cells were obtained through FACS sorting, including CD3-CD4+CD8- intrathymic T progenitor cells (ITTP), CD3intCD4+CD8+ "double positive" thymocytes (DP), CD3highCD4+CD8- "single positive" thymocytes (SP4), CD3+CD4+CD8-CD45RA+CD62L+ naÃ¯ve T cells from cord blood (CB4+), and CD3+CD4+CD8-CD45RA+CD62L+ naÃ¯ve T cells from adult blood (AB4+).

2007-08-06 | E-GEOD-1460 | biostudies-arrayexpress

Genome-wide analysis in ESET+/+ and ESET-/- thymocytes

Project description:Analysis of ESET deficient thymocytes at gene expression level. Each thymocyte developmental stage (preselected DP, postselected DP and CD4SP) was analysed.

2016-01-01 | GSE73951 | GEO

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