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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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20 mM EtOH on hESCs.

ABSTRACT: We studied alcohol's effect on human embryonic stem cell line, H9. Our main objective was to delineate the molecular mechanisms that are involved in changing the differentiation potential of hESCs. Undifferentiated and differentiated (Embryoid bodies) hESCs were treated with 0 or 20 mM EtOH in duplicate for 24 hours.

ORGANISM(S): Homo sapiens

SUBMITTER: Yong Kim

PROVIDER: E-GEOD-45036 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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20 mM EtOH on hESCs.

Project description:We studied alcohol's effect on human embryonic stem cell line, H9. Our main objective was to delineate the molecular mechanisms that are involved in changing the differentiation potential of hESCs.

2013-03-15 | GSE45036 | GEO

Integrated pathways for neutrophil recruitment and inflammation in leprosy

Project description:Neutrophil recruitment is pivotal to host defense against microbial infection, but also contributes to the immunopathology of disease. We investigated the mechanism of neutrophil recruitment in human infectious disease by bioinformatic pathways analysis of the gene expression profiles in the skin lesions of leprosy. In erythema nodosum leprosum (ENL), which occurs in patients with lepromatous leprosy (L-lep), and is characterized by neutrophil infiltration in lesions, the most overrepresented biologic functional group was “cell movement” including E-selectin, which was coordinately regulated with IL-1. In vitro activation of TLR2, upregulated in ENL lesions, triggered induction of IL-1, which together with IFN-, induced E-selectin expression on, and neutrophil adhesion to endothelial cells. Thalidomide, an effective treatment for ENL, inhibited this neutrophil recruitment pathway. The gene expression profile of ENL lesions comprised an integrated pathway of TLR2/FcR activation, neutrophil migration and inflammation, providing insight into mechanisms of neutrophil recruitment in human infectious disease. 6 ENL skin lesions and 7 Lepromatous leprosy skin lesions

2009-06-30 | E-GEOD-16844 | biostudies-arrayexpress

Differential gene expression in CD11b+ splenocytes from mice subject to social threat vs. control

Project description:Gene expression profiling was carried out on splenocyte mRNA samples collected from 10 animals subject to repeated social threat (pooled into 2 groups of 5) and 10 animals subject to non-threatening control conditions (pooled into 2 groups of 5). The primary research question is whether gene expression differs in CD11b+ splenocytes from animals exposed to social threat vs non-threatening control conditions. Keywords: Risk prediction RNA from 5 mice/sample was pooled to generate 4 total samples: 2 from mice subject to repeated social threat, and 2 from control mice.

2010-04-12 | E-GEOD-16661 | biostudies-arrayexpress

Differential gene expression in prefrontal cortex from mice subject to social threat vs. control

Project description:Gene expression profiling was carried out on prefrontal cortex mRNA samples collected from 10 animals subject to repeated social threat (pooled into 2 groups of 5) and 10 animals subject to non-threatening control conditions (pooled into 2 groups of 5). The primary research question is whether gene expression differs in prefrontal cortex tissue from animals exposed to social threat vs non-threatening control conditions. Keywords: Risk prediction RNA from 5 mice/sample was pooled to generate 4 total samples: 2 from mice subject to repeated social threat, and 2 from control mice.

2010-04-12 | E-GEOD-16660 | biostudies-arrayexpress

Transcription profiling of skin lesions from leprosy samples: Divergence of macrophage phagocytic and antimicrobial programs in leprosy

Project description:Effective innate immunity against many microbial pathogens requires macrophage programs that upregulate phagocytosis and direct antimicrobial pathways, two functions generally assumed to be coordinately regulated. Here the regulation of these key functions was investigated in human blood-derived macrophages. IL-10 induced the phagocytic pathway, including CD209 and scavenger receptors, resulting in phagocytosis of mycobacteria and oxLDL. IL-15 induced the vitamin D-dependent antimicrobial pathway and CD209, yet the cells were less phagocytic. The differential regulation of macrophage functional programs was confirmed by analysis of the spectrum of leprosy lesions: the macrophage phagocytosis pathway was prominent in the clinically progressive, multibacillary form, whereas the vitamin D-dependent antimicrobial pathway predominated in the self-limited form of the disease and in patients undergoing reversal reactions from the multibacillary to the self-limited form. These data indicate that macrophage programs for phagocytosis and antimicrobial responses are distinct and differentially regulated in innate immunity in bacterial infections. Experiment Overall Design: 7 LL lesions, 10 BT lesions, 7 RR lesions

2009-10-30 | E-GEOD-17763 | biostudies-arrayexpress

Differential gene expression in CD11b+ splenocytes from mice subject to social threat vs. control (II)

Project description:Gene expression profiling was carried out on splenocyte mRNA samples collected from 6 animals subject to repeated social threat and 6 animals subject to non-threatening control conditions (pooled into 3 groups of 2). The primary research question is whether gene expression differs in CD11b+ splenocytes from animals exposed to social threat vs non-threatening control conditions. Keywords: Risk prediction Gene expression profiling was carried out on splenocyte mRNA samples collected from 6 animals subject to repeated social threat and 6 animals subject to non-threatening control conditions (pooled into 3 groups of 2). The primary research question is whether gene expression differs in CD11b+ splenocytes from animals exposed to social threat vs non-threatening control conditions. This study provides an additional body of data from the same general protocol used in Series GSE16661, and will support more extensive analyses than the original study.

2013-12-01 | E-GEOD-28830 | biostudies-arrayexpress

Human monocyte activation with NOD2L vs. TLR2/1L

Project description:human blood monocytes were isolated, activated and harvested at several timepoints In this study, we identified genes that were differentially expressed in human monocytes activated with eiter NOD2L and/or TLR2/1L. human blood monocytes were purified from healthy donors by Ficoll, Percoll and adherence. Monocytes were activated using NOD2L (MDP) and the TLR2/1L (19kD, triacylated peptide). Cells were harvested before activation (0h) and 6h and 24h after stimulation with ligands.

2012-03-15 | E-GEOD-34156 | biostudies-arrayexpress

Gene expression profile of human monocytes stimulated with all-trans retinoic acid (ATRA) or 1,25a-dihydroxyvitamin D3 (1,25D3)

Project description:A role for vitamin A in host defense against Mycobacterium tuberculosis has been suggested through epidemiological and in vitro studies; however, the antimicrobial mechanism is unclear. Here, we demonstrate that vitamin A mediates host defense through regulation of cellular cholesterol content. Comparison of monocytes stimulated with all-trans retinoic acid (ATRA) or 1,25-dihydroxyvitamin D3, the biologically active forms of vitamin A and vitamin D respectively, indicates that ATRA and 1,25D3 induce mechanistically distinct antimicrobial activities. Gene expression profiling reveals that ATRA but not 1,25D3 triggers a lipid metabolism and efflux pathway, including expression of lysosomal lipid transport gene NPC2. ATRA-induced decrease in total cellular cholesterol content, subcellular lipid reorganization, lysosomal acidification and antimicrobial activity are all dependent upon expression of NPC2. Finally, the addition of HIV-protease inhibitors known to inhibit cholesterol efflux, Ritonavir and Nelfinavir, blocked both ATRA-induced cholesterol decrease as well as antimicrobial activity. Taken together, these results suggest that the vitamin A-mediated host defense mechanism against M. tuberculosis requires regulation of cellular cholesterol. Monocytes derived from four independent healthy blood donors that were stimulated with control (CTRL), ATRA or 1,25D3 at 10-8M for 18 hours.

2013-12-31 | E-GEOD-46268 | biostudies-arrayexpress

Differential gene expression in ovarian cancer cell lines treated with vehicle or norepinephrine

Project description:Gene expression profiling was carried out HeyA8 and SKOV3-ip1 ovarian cancer cell lines, treated either with vehicle control or 10 uM norepinephrine. The primary research question is whether ovarian cancer cell gene expression differs as a function of norepinephrine exposure. Gene expression profiling was carried out HeyA8 and SKOV3-ip1 ovarian cancer cell lines, treated either with vehicle control or 10 uM norepinephrine.

2011-12-14 | E-GEOD-34405 | biostudies-arrayexpress

Leukocyte gene expression in depressed and non-depressed renal cell carcinoma patients

Project description:Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from renal cell carcinoma patients. The primary research question is whether gene expression differs as a function of patient's level of depression as measured by CESD score > 16. Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from renal cell carcinoma patients. The primary research question is whether gene expression differs as a function of patient's level of depression as measured by CESD score > 16.

2013-04-01 | E-GEOD-36957 | biostudies-arrayexpress

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