Project description:This SuperSeries is composed of the following subset Series: GSE32141: Expression analysis LPS stimulated THP-1 cells in four paired samples GSE32324: ChIP-seq analysis LPS stimulated THP-1 cells Refer to individual Series
Project description:CD14+ Monocytes from healthy volunteers were purified by MACS (negative selection) and FACSorting and either left untreated or stimulated for 24h and 48h with LPS. THP-1 cells were stimulated for 4h, 24h and 48h with LPS. Glycoproteins were captured with hydrazide chemistry and tryptic and PNGase F-released peptide fractions analyzed by MS/MS. Quantitative assessment revealed differential glycoprotein expression in activated/LPS-tolerized monocytes and naïve monocytes and THP-1 cells.
Project description:To better understand the interaction of TGFbeta and Toll-like-receptor 4 (TLR4) signaling in monocytes, we performed microarray analysis. We identified a unique set of genes whose expressions in monocytes were regulated by simultaneous stimulation of TLR4 and TGFβ signaling. THP-1 cells, a human monocytic cell line, were stimulated for 24 hours with PBS as control, LPS (100ng/ml), TGFbeta1 (1ng/ml) or LPS (100ng/ml) + TGFbeta1 (1ng/ml). After 24 hours of stimulation, total RNA was isolated and prepared for genome wide analyses using Illumina HumanRef8 V3.0 Beadchips. In total 32 arrays were analyzed including 8 samples of PBS-stimulated monocytes, 8 samples of LPS-stimulated monocytes, 8 samples of TGFbeta1 stimulated monocytes and 8 samples of monocytes stimulated with LPS + TGFbeta1.
Project description:THP-1 macrophages were treated with EVs and stimulated with LPS, and then total RNA was extracted from cells. Extracted total RNAs were investigated by microarray analysis. Increase and decrease of mRNA expression were investigated between EV-treated and non-treated THP-1 macrophages.
Project description:Macrophage cells play a critical role in the innate immune response during infection. Previous studies have reported that the trichloroethylene (TCE) metabolite S-(1,2-dichlorovinyl)-l-cysteine (DCVC) inhibits cytokine secretion in pathogen stimulated placental membranes, but little is known about the mechanism for these effects, including which cell types or transcriptomic pathways are impacted. We tested the hypothesis that DCVC inhibits lipopolysaccharide (LPS) stimulated inflammation pathways in differentiated (macrophage like) THP-1 cells. THP-1 cells were differentiated with phorbol 12-myristate 13-acetone (PMA) for 24 h and then treated with 1, 5, or 10 µM DCVC for 24 h. After an additional 4 h incubation with lipopolysaccharide (LPS), RNA was harvested, and RNA sequencing and cytokine analysis was performed. There were 1,399 differentially expressed genes in the cells co-treated with DCVC and LPS compared to LPS alone. Major pathways impacted include the inflammatory response, response to cytokines, and leukocyte activation. Finally, DCVC significantly reduced LPS-stimulated IL-1β, IL-6, and TNF-α secretion. These findings suggest that TCE could potentially modify important macrophage functions during infection.
