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Gene expression analysis of Ox40-cre/ROSA-YFP CD4+ T cell subsets

ABSTRACT: An Ox40-cre allele was used for lineage marking of CD4 T cells. Naive T cells that had previously expressed OX40 demonstrated a partially activated phenotype that was distinct from that of the majority of naive T cells. These results are consistent with a minor subpopulation of naive T cells being dependent on strong signaling responses to thymic self ligands. Keywords: T cell population comparison. Characterization of a novel subpopulation of naive T cells. Four types of T cells were sorted from mice (naive, CD44lo, CD44hi and Treg).

ORGANISM(S): Mus musculus

SUBMITTER: Mark Klinger

PROVIDER: E-GEOD-13502 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Thymic OX40 expression discriminates cells undergoing strong responses to selection ligands.

Klinger Mark M Kim Joong Kyu JK Chmura Stephen A SA Barczak Andrea A Erle David J DJ Killeen Nigel N

Journal of immunology (Baltimore, Md. : 1950) 20090401 8

OX40 is a member of the TNF receptor family expressed on activated and regulatory T (Treg) cells. Using an Ox40-cre allele for lineage marking, we found that a subpopulation of naive T cells had also previously expressed OX40 in the thymus. Ox40-cre was induced in a small fraction of thymocytes that were OX40(+), some of which were CD25(high) Treg cell precursors. Thymic OX40 expression distinguished cells experiencing a strong signaling response to positive selection. Naive T cells that had pre ...[more]

PMID: 19342632

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Gene expression analysis of Ox40-cre/ROSA-YFP CD4+ T cell subsets

Project description:An Ox40-cre allele was used for lineage marking of CD4 T cells. Naive T cells that had previously expressed OX40 demonstrated a partially activated phenotype that was distinct from that of the majority of naive T cells. These results are consistent with a minor subpopulation of naive T cells being dependent on strong signaling responses to thymic self ligands. Keywords: T cell population comparison. Characterization of a novel subpopulation of naive T cells.

2009-09-22 | GSE13502 | GEO

Expression data from BCL6-YFP-positive Tfh cells, BCL6-YFP-negative Tfh cells, non-Tfh cells, and naïve helper T cells.

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Transcriptional profiling of CD44hi AT2 cells under homeostasis and after lung injury [I]

Project description:The epithelium of alveoli is composed of alveoli type I cells (AT1) that cover ~95% of the surface area and alveoli type II cells (AT2) that secret surfactant as well as function as adult stem cells. To characterize a subgroup of AT2 that express higher levels of hyaluronan receptor CD44 (the CD44high, or CD44hi AT2) and behave as alveoli epithelial stem cells during steady-state homeostasis, we used RNA-sequencing to compare the expression profiles of these cells with the bulk CD44low (or CD44lo ) AT2. CD44hi AT2 showed gene signatures that indicate partial de-differentiation and a higher potential to proliferate compared with CD44lo AT2. At steady-state conditions, CD44hi AT2 also showed higher expression of genes activated by NFκB mediated inflammatory responses and transcriptome signatures that resemble early-stage Kras-induced adenocarcinoma. Furthermore, these cells were more responsive to KrasG12D induction both in 3D tumor organoid culture and in mouse lung cancer cell transplantation models. In summary, CD44hi AT2 plays an essential role in the homeostatic maintenance of the alveolar epithelium and tumor initiation.

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Project description:Define,(a) intrinsic differences and (b) changes occuring upon TCR activation in genetic profiles of naive CD4+ and CD8+ T cells from young and old animals, to identify candidate genes altered in old T cells involved in impairement of immune response in order to restore immune function in the old. Activation dependant time series on sorted naive (CD62Lhi/CD44lo) CD4 and CD8 T cells from young and old animals-Each time point contains RNA pooled from 4 independent sortings

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2015-04-30 | GSE59281 | GEO

Project description:RNA sequencing of CD44hi CD4+T cells and CD44lo CD4+T cells in murine

| PRJNA726762 | ENA

Cancer stem cells subpopulations within the CD44high human breast cancer stem cell compartment [HMT clones]

2015-04-30 | E-GEOD-59281 | biostudies-arrayexpress

Gene expression profile at single cell level of total alveolar type II (AT2) cells and CD44hi AT2 cells

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2024-05-24 | GSE202226 | GEO

Expression data from C57/Bl6 Wt mice CD4+ T cells after activation with anti-CD3 plus Wt APC or OX40L-Tg APC

Project description:OX40 is a T cell costimulatory molecule in the tumor necrosis factor receptor (TNFR) superfamily. Unlike other costimulatory molecules, OX40 is not expressed by naive T cells, but its expression is rapidly induced following T cell activation, and OX40 costimulation plays a critical role in cell survival, proliferation, and generation of memory cells. We used microarrays to detail the global programme of gene expression of activated CD4 T cells underlying OX40 costimulation and identified distinct classes of up-regulated genes after OX40 costimulation.

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