Project description:The heterogeneous characteristics of activated monocytes are much unknown. We performed the single cell transcriptomic analysis of LPS-treated human monocytes from healthy blood donor, and CD127 expression associated expression pattern of inflammatory genes was identified in LPS-treated monocytes.
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 screen the genes and pathways regulated by BRD3 in the THP1 monocytes induced by LPS, THP1 monocytes were transfected by BRD3shRNA and then treated by LPS for 3 hours.
Project description:To screen the genes and pathways regulated by CREB1 in the THP1 monocytes induced by LPS, THP1 monocytes were transfected by CREB1 shRNA and then treated by LPS for 3 hours.
Project description:To screen the genes regulated by BRD3 in the THP1 monocytes induced by LPS, THP1 monocytes were treated by LPS for 1 hour in the presence or absence of OTX015
Project description:We performed comparative studies of monocytes trained by either PBS, cholesterol or varying dosages of LPS, in order to examine the differential innate responses to stress signals. Differentially trained monocytes were subjected to whole genome methylation array analyses. Our data reveal that monocytes trained by either cholesterol or very low dose LPS preferentially clustered together in terms of their genome methylation profiles, separate from the naïve PBS treated monocytes or monocytes trained by high dose LPS. Our findings suggest that monocytes may similarly respond to the generic membrane stress signals caused by either very low dose LPS or cholesterol, in contrast to the exhausted state induced by high dose LPS.
Project description:To characterize more broadly the effect of attenuated TLR4 signaling responses in sooty mangabeys, we performed a comparative RNA-seq profiling of LPS-treated primary monocytes from rhesus macaques and sooty mangabeys. Production of TNF- and IL6 mRNA was significantly lower in sooty mangabeys. Moreover, we observed that induction of NF-κB -regulated inflammatory genes was broadly and significantly reduced in sooty mangabeys, for TNF-a and IL-6 signaling pathways, compared to rhesus macaques. Overall, these data indicate that LPS stimulation of SM blood cells results in a significantly blunted production of pro-inflammatory cytokines as compared to rhesus macaque macrophages.