Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA239829 | ENA |
REPOSITORIES: ENA
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Project description:T-cell-specific deletion of USP8 (USP8ffCD4Cre) revealed that USP8 is required for thymocyte transition to the CD4+ and CD8+ single positive (SP) stages. To evaluate underlying mechanisms, gene expression profilling was performed in CD4+CD8+ double pos thymocytes derived from control (USP8ff and USP8ffCD4Cre) mice. Microarray analysis of two groups of USP8fl/fl and USP8fl/flCD4Cre thymocytes. Material from two mice was combined for each group (eight mice in total).
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Project description:Single cell suspensions of total thymocytes were obtained from Pten enhancer (PE) wild-type or knockout mice. This single-cell suspension was enriched in CD4-CD3- immature thymocyte progenitor cells. CD4-CD3- enriched thymocytes were then mixed 1:1 with single-cell suspensions from total unenriched thymocytes and subsequntly loaded in a 10x Chromium instrument for single-cell RNAseq analyses. Our results revealed Pten levels are signifcantly decreased in CD4-CD8- double negative (DN) thymocytes, CD8+ intermediate single positive (ISP) thymocytes and CD4+CD8+ double positive (DP) thymocytes in PE knockout mice, compared to PE wild-type mice.
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Project description:Subpopulations of human fetal thymocyte and circulating naïve 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+ naïve T cells from cord blood (CB4+), and CD3+CD4+CD8-CD45RA+CD62L+ naïve T cells from adult blood (AB4+). Keywords = Microarray Keywords = gene expression Keywords = thymocytes Keywords = naïve CD4+ T cell Keywords = recent thymic emigrants Keywords: other
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Project description:Mouse thymocytes can be classified into four major subsets based on expression of CD4 and CD8 co-receptors. CD4-CD8- (double negative, DN) cells become CD4+CD8+ (double positive, DP) cells following productive T cell receptor (TCR) beta chain rearrangement. A small proportion of DP cells are selected through interaction of clonal TCRalpha/beta and MHC self peptide complex expressed on thymic stromal cells. DP cell expressing MHC class I-restricted TCR become CD4-CD8+ cells, which will finally differentiate into cytotoxic T cells, while MHC class II restricted selection generates CD4+CD8- helper lineage T cells. We used microarrays to identify genes important for thymocyte differentiation and lineage determination by profiling gene expression in different thymocyte subsets.
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