Ontology highlight
ABSTRACT:
PROVIDER: PRJNA471158 | ENA |
REPOSITORIES: ENA
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Project description:To evaluate the DC genome-wide gene expression in response to beta-glucan and its regulation by IL-1 receptor antagonist (IL-1RA) we used a whole genome microarray. The gene expression profiling was performed in DC left untreated or exposed to beta-glucan for 4 and 12 h, in absence or presence of IL-1RA. This strategy allowed the identification of early/immediate and late/secondary genes regulated by beta-glucan in an IL-1-dependent and -independent manner. Human monocyte-derived DC were obtained by a 6/7-d cultures of freshly isolated monocytes with recombinant human IL-4 (10 ng/ml) and GM-CSF (50 ng/ml). Beta-glucan-associated gene expression and its regulation by IL-1RA in human DC was measured in cells left untreated or at 4 and 12 h after exposure to 10 ug/ml of particulate beta-glucan in absence or presence of 2.5 ug/ml of IL-1RA. Five different conditions (Untreated 0h, beta-glucan 4h, IL-1RA + beta-glucan 4h, beta-glucan 12h, and IL-1RA + beta-glucan 12h) were tested using DC from three different donors.
2013-11-01 | E-GEOD-42189 | biostudies-arrayexpress
Project description:A clone encoding carboxymethylcellulase activity was isolated during functional screening of a human gut metagenomic library using Lactococcus lactis MG1363 as heterologous host. The insert sequence revealed a glycoside hydrolase family 9 (GH9) catalytic domain with sequence similarity to a gene from Coprococcus sp. ART55/1, which is closely related to Coprocococcus eutactus. Surveys of available genomes indicated a limited distribution of GH9 domains among dominant human colonic anaerobes. Genomes of two Coprococcus-related strains showed the presence of two GH9-encoding and four GH5-encoding genes, however, the strains did not appear to be able to degrade cellulose. Instead, they grew well on beta-glucans and one of the strains also showed growth on galactomannan, galactan and glucomannan. Gene expression and proteomic analysis of Coprococcus sp. ART55/1 grown on cellobiose, beta-glucan and lichenan led to a similar change in expression in comparison to glucose. On beta-glucan and lichenan only, one of the four GH5 genes was strongly upregulated. Growth on glucomannan lead to a transcriptional response of many genes, in particular a strong upregulation of glycoside hydrolases involved in mannan degradation. Thus, beta-glucans are a major growth substrate for species related to Coprococcus eutactus, with glucomannan and galactans alternative substrates for some strains.
2020-03-10 | PXD014174 | Pride
Project description:Gene expression comparison between human colonic epithelial cells cultured with Klebsiella pneumoniae (KP) derived from PSC patients versus KP JCM1662.
| EGAD00001004465 | EGA
Project description:Non-specific protective effects against reinfection have been described following infection with Candida albicans. Here we show that mice defective in functional T and B lymphocytes were protected against reinfection with C. albicans in a monocyte-dependent manner. C. albicans and beta glucans induced functional programming of monocytes, leading to enhanced cytokine production in vivo and in vitro. The training required the beta glucan receptor dectin 1 and the non-canonical Raf 1 pathway. Monocyte training by beta-glucans was mediated by epigenetic mechanisms through genome-wide changes in histone trimethylation at H3K4. Pathway analysis showed specific induction of epigenetic changes in genes of innate immunity. The functional programming of monocytes, reminiscent of similar properties of NK cells, has been termed M-bM-^@M-^\trained immunityM-bM-^@M-^] and may be employed for the design of improved vaccination strategies. Chromatin-IP at day7 followed by highthroughput sequencing to look at the differences in H3K4me3 and H3K27me3 binding in Monocytes either cultured in RPMI only versus those trained for 24hrs with beta glucan. Additionally expression analysis was performed by doing strandspecific RNAseq also for both unstimulated and beta glucan trained monocytes for correlating the histone modification changes with the expression changes. Biological replicates were generated from independent samples for H3K4me3 and RNAseq. Additional H3K4me3 ChIP-seq assays were performed for day0 untreated, 24hrs control and beta glucan trained monocytes. H3K4me3 ChIP-seq was also performed for Mouse macrophages both saline(control) and low dose Candida treated.
2012-12-21 | E-GEOD-34260 | biostudies-arrayexpress
Project description:beta-glucan induced glycolysis in HIF-1 depedent manner. We reported that beta-glucan injection in mice led to upregulated glycolysis. HIF-1a plays a major role in this process. Mice receives beta-glucan via ip for 4 days. Splenocytes were isolated for RNA sequencing.
2014-09-26 | E-GEOD-57206 | biostudies-arrayexpress