Bos taurus
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ABSTRACT:
PROVIDER: PRJNA147399 | ENA |
REPOSITORIES: ENA
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Project description:We have performed analyses of murine primary bone marrow derived neutrophils challenged with either ultra-low dose or high dose of LPS. Neutrophils can be differentially programmed to distinct states by varying dosages of LPS. Purified bone marrow neutrophils were treated with PBS, 100 pg/ml LPS or 100 ng/ml LPS overnight, and harvested for scRNAseq analysis to examine their profiles of gene expression.
2023-12-27 | GSE230241 | GEO
Project description:In this experiment we investigated the effect of HDAC3 inhibition on the transcriptome of IFNg-primed macrophages under different tolerization conditions. Peripheral blood mononuclear cells (PBMCs) were isolated from 3 healthy donors. PBMCs were isolated from whole blood of healthy donors using Ficoll gradient (Invitrogen). Monocytes (CD14+ cells) were positively selected from PBMCs using CD14 Microbeads according to the manufacturer’s instructions (Miltenyi Biotec). Monocytes were subsequently treated with or without 500 nM HDAC3i (ITF3100) for 30 minutes prior to overnight IFNg priming (50 ng/mL). Cells were then kept without LPS (non-LPS; N), treated with 10 ng/mL LPS once (non-tolerized; NT), or treated with LPS twice (tolerized; T; second LPS concentration: 100 ng/mL). In total, there were 18 samples included.
| EGAD00001005959 | EGA
Project description:Background: Udder infections with environmental pathogens like Escherichia coli are a serious problem for the diary industry. Reduction of incidence and severity of mastitis is desirable and mild priming of the immune system either through vaccination or with low doses of an immune stimulant like lipopolysaccharide LPS was previously found to dampen detrimental effects of a subsequent infection. Monocytes / macrophages are known to develop tolerance to the endotoxin (ET) LPS as adaptation strategy to prevent exuberant inflammation. We have recently observed that application of 1 M-BM-5g of LPS/udder quarter effectively protects the cow for several days from an experimentally elicited mastitis. We have modelled this process in primary cultures of Mammary Epithelial Cells (MEC) from the cow. This is by far the most abundant cell type in the udder coming into contact with invading pathogens and little is known about the role of MEC in establishing ET in the udder. Results: We primed primary MEC cultures for 6 h with LPS (100 ng/ml) and stimulated some cultures 12 h or 42 h later with 107/ml of E. coli particles. Affymetrix microarrays were used to profile priming related alterations in the global transcriptome of those cells. Corner stone data were validated with quantitative real time PCR. LPS-priming alone caused differential expression of 40 genes and mediated significantly different response to a subsequent E. coli challenge of 226 genes. Expression of 38 genes was enhanced while that of 188 was decreased. Higher expressed were anti-microbial factors (M-CM-^_-defensin LAP, SLPI), cell and tissue protecting factors (DAF, MUC1, TGM1,-3) as well as mediators of the sentinel function of MEC (CCL5, IL-8). Dampened was the expression of potentially harmful pro-inflammatory master cytokines (IL-1B, IL-6, TNF-alpha and immune effectors (iNOS, matrix metalloproteases). Functional network analysis highlighted the reduced expression of IL-1B and of IRF7 as key to this modulation. Conclusion: LPS-primed MEC are fitter to repel pathogens and better protected against misguided attacks of the immune response. Attenuated is the exuberant expression of factors potentially promoting immunopathological processes. MEC therefore recapitulate many aspects of ET known so far from professional immune cells. Each experiment was performed in triplicate using separate pbMEC cultures (80% confluence) prepared from the udders of udders of three healthy, pregnant (d130 of gestation) cows in the mid of their first lactation. Controls (C.) were cultured for 12 h in GM, washed 3x with PBS and cultivated for additional 18 h (short waiting experiment) or 48 h (long waiting experiment). For the priming experiment (P.) the pbMEC cultures were stimulated (M-bM-^@M-^\primedM-bM-^@M-^]) at time 0 h with 100 ng/ml LPS , washed three times with PBS and cultivated for another 18 h or 48 h. For the induction trial (I.) cells were challenged with 107/ml particles of heat inactivated E. coli1303 for 6 h. The cultures were handled exactly like the control group (C.) prior to the E. coli challenge. For the induction post priming experiment (I.p.P.) cultures were primed for 12 h with LPS, just as described for the priming group (P.). After 3x washing with PBS and waiting for 12 h or 42 h in GM the I.p.P. cultures were also challenged with 107/ml particles of E. coli1303. Cells were harvested at time 30 h (short waiting experiments) or 60 h (long waiting experiments) and total RNA was prepared.
2014-09-13 | E-GEOD-32186 | biostudies-arrayexpress
Project description:In this experiment we investigated the effect of HDAC3 inhibition on the transcriptome of IFNg-primed macrophages under different tolerization conditions. Peripheral blood mononuclear cells (PBMCs) were isolated from 3 healthy donors. PBMCs were isolated from whole blood of healthy donors using Ficoll gradient (Invitrogen). Monocytes (CD14+ cells) were positively selected from PBMCs using CD14 Microbeads according to the manufacturer’s instructions (Miltenyi Biotec). Monocytes were subsequently treated with or without 500 nM HDAC3i (ITF3100) for 30 minutes prior to overnight IFNg priming (50 ng/mL). Cells were then kept without LPS (non-LPS; N), treated with 10 ng/mL LPS once (non-tolerized; NT), or treated with LPS twice (tolerized; T; second LPS concentration: 100 ng/mL).
2020-02-12 | E-MTAB-8784 | biostudies-arrayexpress
Project description:Wild-type bone marrow-derived macrophages (BMDMs) were treated with vehicle (0.1% EtOH/D-PBS), 6h 100 ng/ml lipopolysaccharide (LPS) or 16h 1uM dexamethasone (Dex) and 6h 100 ng/ml LPS (Dex+LPS) and mRNA expression analysed by RNA-Seq.
2020-12-31 | GSE137412 | GEO
Project description:Proteomics of carboxylated polystyrene bead (1.0 um) phagosomes from murine bone marrow-derived macrophages. cells were either resting or treated with 100 U/ml IFN-γ (PeproTech) and 100 ng/ml LPS (Sigma) for 24 h, 20 ng/ml Interleukin-4 (IL4) (BD Pharmingen) for 48 h, 20 ng/ml Interleukin-13 (IL13), 10 ng/ml Interleukin-10 (IL10)for 48 h or Reprogrammed (IL4 was incubated with BMDMs for 24 h, and the medium was replaced with fresh medium containing IFN-γ/LPS to incubate for another 24 h). Phagosomes were isolated after 30 min bead inoculation.
2019-03-22 | PXD004520 | Pride
Project description:24 hours following transfection with either a control mix, a construct overexpressing GAM or siRNAs directed against GAM (siGAM), THP-1 cells were challenged with LPS 100 ng/ml. RNAs were analyzed after 6 hours of LPS challenge
2010-06-09 | E-TABM-868 | biostudies-arrayexpress
Project description:Bone marrow cells were isolated, primed with M-CSF (M BMDM) or GM-CSF (GM BMDM) and cultured on tissue culture dishes (TC) or low adherent dishes (noTC) for 7 days. BMDMs were treated with LPS (100 ng/ml) for 3 hours. The difference between TC- and noTC-cultured BMDMs were analyzed to describe the phenotye and function of each population. Moreover, the influence of LPS treatment on GM-BMDMs and M-BMDMs were analyzed.
2022-06-10 | GSE198821 | GEO
Project description:Macrophages treated with INF-g (100 U/ml)and LPS (10 ng/ml), or INF-g (100 U/ml), LPS (10 ng/ml)and IL-10 (5 ng/mL), or INF-g (100 U/ml), LPS (10 ng/ml)and rhAPC(5 ug/mL. Each treatment is hybridized against untreated macrophages
2007-09-27 | E-MEXP-927 | biostudies-arrayexpress
Project description:RNA sequencing for enteroids treated with different concentrations of IL-17 (0 ng/ml. 1 ng/ml, 10 ng/ml and 100 ng/ml)
| PRJNA756286 | ENA