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Expression data from mouse testis cells

ABSTRACT: Our testis transplantation data demonstrate that only Sox2-GFP+c-kit- cells contain testis-repopulating potential and we wondered whether a molecular comparison of the Sox2-GFP+c-kit+ and Sox2-GFP+c-kit- spermatogonial cells would uncover genes that could explain the exclusive repopulation potential of the latter cell population. To this end, we sorted individual testis cell populations and subjected extracted and amplified RNA to array analysis. Mouse testes of 2-week old Sox2GFP mice were isolated, and dissociated with collagenase. Single cell suspensions were generated and stained with FACS antibody for ckit. FACS analysis was done based on internal GFP signal and ckit antibody signal. PI was used to exclude dead cells. Sox2GFP+ckit- and Sox2GFP+ckit+ populations were sorted into Trizol and sent to ExpressionAnalysisR for processing and profiling. 20 testis were pooled into one sample, two biological replicates were analyzed.

ORGANISM(S): Mus musculus

SUBMITTER: Katrin Arnold

PROVIDER: E-GEOD-32461 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Expression data from mouse testis cells

Project description:Our testis transplantation data demonstrate that only Sox2-GFP+c-kit- cells contain testis-repopulating potential and we wondered whether a molecular comparison of the Sox2-GFP+c-kit+ and Sox2-GFP+c-kit- spermatogonial cells would uncover genes that could explain the exclusive repopulation potential of the latter cell population. To this end, we sorted individual testis cell populations and subjected extracted and amplified RNA to array analysis.

2011-10-06 | GSE32461 | GEO

Gene expression changes during hematopoietic cell differentiation

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2013-11-06 | E-GEOD-48986 | biostudies-arrayexpress

Requirement for Lis1 in normal and malignant hematopoietic stem cell renewal to investigate requirement for Lis1 in normal and malignant hematopoietic stem cell renewal

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2014-02-02 | E-MEXP-3855 | biostudies-arrayexpress

Expression data from ESC and in vitro derived somatic cells and germ cells

Project description:We performed gene expression profiling on in vitro derived PGCs, undifferentiated ESCs, and somatic cells from the EB to examine germ cell expression in ESC-derived cells All cells were collected using fluorescence activated cell sorting to isolate SSEA1+/cKit+ ESCs, SSEA1+/cKitbright PGCs, Oct4-gfp+/cKitbright PGCs, and SSEA1-/cKit- somatic cells and Oct4-gfp-/cKit- somatic cells.

2011-12-15 | E-GEOD-33121 | biostudies-arrayexpress

IFNa activates dormant HSCs in vivo

Project description:Maintenance of the blood system is dependent on dormant haematopoietic stem cells (HSCs) with long-term self-renewal capacity. Upon injury these cells are induced to proliferate in order to quickly re-establish homeostasis. The signalling molecules promoting the exit of HSCs out of the dormant stage remain largely unknown. Here we show that in response to treatment of mice with interferon-alpha (IFNα), HSCs efficiently exit G0 and enter an active cell cycle. HSCs respond to IFNα treatment by increased phosphorylation of STAT1 and PKB/Akt, expression of IFNα target genes and up-regulation of stem cell antigen-1 (Sca-1). HSCs lacking either the interferon-α/β receptor (IFNAR), STAT1 or Sca-1 are insensitive to IFNα stimulation, demonstrating that STAT1 and Sca-1 mediate IFNα induced HSC proliferation. Although dormant HSCs are resistant to the anti-proliferative chemotherapeutic agent 5-FU1, HSCs pre-treated (primed) with IFNα and thus induced to proliferate are efficiently eliminated by 5-FU exposure in vivo. Conversely, HSCs chronically activated by IFNα are functionally compromised and are rapidly out competed by non-activatable IFNAR-/- cells in competitive repopulation assays. In summary, while chronic activation of the IFNα pathway in HSCs impairs their function, acute IFNα treatment promotes the proliferation of dormant HSCs in vivo. These data may help to clarify the so far unexplained clinical effects of IFNα on leukemic cells and raise the possibility for novel applications of type I interferons to target cancer stem cells. cDNA microarray analysis was performed on sorted Lin neg, cKit+, CD150+, CD48neg HSCs from IFNα treated (16h after treatment) and untreated (littermate) mice. Per condition 3 independent biological replicates were analysed.

2009-01-15 | E-GEOD-14361 | biostudies-arrayexpress

Development of MLL-rearranged leukemia is dependent on a transcriptional program orchestradt by C/EBPα

Project description:Translocations involving the MLL genes are frequently found in Acute Myeloid Leukemia (AML) and are associated with poor prognosis. The MLL fusion proteins act as aberrant transcription factor activating a transcriptional program that transforms the cells, potentially through collaboration with other transcription factors. To investigate this we searched gene expression profiles from patients with MLL-rearranged AML compared with normal hematopoietic progenitor cells for transcriptional regulators and found targets of C/EBPα to be up-regulated in the AML samples, suggesting that C/EBPα might collaborate with MLL fusion proteins in the initial transformation process. We could show that transformation by MLL fusion proteins is dependent on C/EBPα activity both in early progenitors as well as in GMPs. In contrast, C/EBPα was found to be indispensable in an already established leukemia. These results suggest that C/EBPα play an important role in the early transforming event of leukemogenesis. We used microarray to study the early transcriptional changes induced by MLL-ENL expression and we identified a combined C/EBPα / MLL-ENL transcriptional signature. 3 Cebpaflox/flox;Mx1Cre and 3 Cebpaflox/flox;Mx1Cre- mice were sacrificed 14 days after pIpC injection and bone marrow cells were harvested, enriched for cKit-expression and transduced with a pMIG retroviral vector expressing the MLL-ENL fusion protein and GFP. 72 h post first transduction, GFP-positive or negative PreGM cells were sorted.

2013-12-10 | E-GEOD-46534 | biostudies-arrayexpress

Functionally distinct subsets of lineage-biased multipotent progenitors control blood production in normal and regenerative conditions

Project description:To identify the molecular characterisitics of parallel lineage-biased MPP populations arising from hematopoietic stem cells (HSC) we conducted genome-wide analyses of hematopoietic stem, progenitor and mature myeloid cell populations using Affymetrix Gene ST1.0 arrays. Microarray analysis of 3-5 biological replicates of the indicated hematopoietic populations, isolated by FACS sorting from C57BL/6 mouse BM. Immunophenotypic definitions: Long-term HSC (HSCLT) (Lin-/cKit+/Sca1+/Flk2-/CD48-/CD150+); Short-term HSC (HSCST) (Lin-/cKit+/Sca1+/Flk2-/CD48-/CD150-); MPP2 (Lin-/cKit+/Sca1+/Flk2-/CD48+/CD150+); MPP3 (Lin-/cKit+/Sca1+/Flk2-/CD48+/CD150-); MPP4 (Lin-/cKit+/Sca1+/Flk2+); CMP (Lin-/cKit+/Fc?R-/CD34+); GMP (Lin-/cKit+/Fc?R+/CD34+); Pre-granulocyte (PreGr) (Mac1+/Gr1int); Granulocyte (Gr) (Mac1+/Gr1hi). HSC and GMP samples listed here were also used as controls for our related microarray study GSE48893.

2015-05-05 | E-GEOD-68529 | biostudies-arrayexpress

Transcription profiling of mouse bone marrow LSK cells transduced with wild type AML1/ETO or AML1/ETO harboring the W692A substitution in the MYND domain reveals a structural basis for recognition of SMRT/N-CoR by the MYND domain and its contribution to AML1/ETO activity

Project description:To examine the effects of disrupting the AML1/ETO MYND-SMRT interaction with the W692A substitution on AML1/ETO function, the global gene expression profile of mouse bone marrow LSK cells transduced with GFP was compared to that of cells transduced with either wild-type AML1/ETO or AML1/ETO harboring the W692A substitution in the MYND domain. Three independent biological replicates were assessed for both the control (GFP/MigR1) and AML1/ETO (intact MYND-SMRT interaction) conditions, whereas four independent biological replicates were assessed for the W692A (disrupted MYND-SMRT interaction) condition. The three GFP replicates were used to establish a baseline signal for comparison to both the AML1/ETO and W692A samples. Experiment Overall Design: Global gene expression profiles of FACS-sorted Lin-Sca1+cKit+ mouse bone marrow cells transduced with empty vector (GFP-MigR1), AML1/ETO, or AML1/ETO with the W692A substitution (W692A).

2008-06-15 | E-GEOD-7324 | biostudies-arrayexpress

Expression data 550cGy vs 0cGy KSL

Project description:Precise study of HSCs during regeneration has been impeded by the rarity of the HSC population and depletion of phenotypic HSCs early following genotoxic stresses, such as total body irradiation (TBI). We isolated bone marrow (BM) ckit+sca-1+lin- (KSL) cells, which are enriched for HSCs, from adult C57Bl6 mice before and at several time points following TBI, as a means to map the dynamic molecular response of HSC regeneration. We isolated BM KSL cells and myeloid progenitor cells (c-kit+sca-1-lin- cells) at day +14 after irradiation and compared the gene expression profile of regenerating HSCs versus steady state HSCs (non-irradiated) and committed progenitor cells.

2016-04-05 | E-GEOD-79744 | biostudies-arrayexpress

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