To investigate the mechanisms of UDCA reduce inflammation effects in J774A.1 cells induced inflammation by LPS
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE174489 | GEO | 2023/02/08
REPOSITORIES: GEO
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Project description:To investigate the mechanisms of UDCA reduce inflammation effects in J774A.1 cells induced inflammation by LPS
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Project description:We treated 80% confluent J774A.1 macrophages with 1 nM neuropeptide-FF (NPFF) for 18 h. We used microarray as an explorative approach to recognize effects of NPFF on macrophages.
2017-06-05 | GSE90658 | GEO
Project description:The aim of this project is to observe the effect of 5 μM rhein treatment on the acetylation level of NLRP3 activated macrophages. We primed J774A.1 cells with 100ng/mL LPS for 12 hours followed by 5μM rhein treatment for 30 minutes. Finally, the cells were stimulated with 4 mM ATP for 30 min to trigger the inflammasome assembly. Cell lysates were collected after ATP stimulation by cell scrapers, and acetylomics were performed as described below.
2024-10-17 | PXD044992 | Pride
Project description:Phagocytosis represents a mechanism used by macrophages to remove pathogens and cellular debris. Recent evidence suggested that amino acid or glucose deprivation may cause an increase in phagocytosis of heat-inactivated Escherichia coli and Staphylococcus aureus by macrophages, but not the uptake of platelets, apoptotic cells or beads. Increased phagocytosis of bacteria could be blocked by phagocytosis inhibitors and depended on p38 MAP kinase activity. To examine potentially important downstream pathways linked to EBSS-induced starvation and p38 MAP kinase activation, a full genome microarray representing over 41,000 mouse genes or transcripts was probed with cDNA isolated from J774A.1 macrophages that were treated with EBSS, EBSS supplemented with the p38 inhibitor SB202190 or control medium supplemented with 10% fetal bovine serum. Keywords: autophagy, heterophagy, p38 MAP kinase, scavenger receptor A, starvation Prior to RNA isolation, J774A.1 macrophages were incubated in RPMI 1640 medium supplemented with (i) 10% fetal bovine serum, (ii) Earleâs Balanced Salt Solution (EBSS) or (iii) EBSS supplemented with 10 µM SB202190 for 6 hours.
2010-05-06 | E-GEOD-14293 | biostudies-arrayexpress
Project description:Expression data from Total RNA extracted from murine spleen. Sepsis was induced in C57Bl/6J mice by cecal ligation and puncture (CLP), followed 6 hours later by an intravenous injection of Mesenchymal Stem Cell (MSC) or saline. Twenty-eight hours after CLP, plasma, bronchoalveolar lavage (BAL) fluid and tissues were collected for analyses. Total RNA was extracted using Trizol (as per manufactures' instruction) followed by clean-up procedure using Qiagen RNA easy Prep (as per manufactures instructions) In the following study we hypothesized that mesenchymal stem cells (MSCs), which have documented immunomodulatory properties, would reduce sepsis-associated inflammation and organ injury in a clinically relevant model of sepsis. To identify the molecular changes associated with decreased inflammation in CLP-injured mice treated with MSCs, we analyzed the gene expression profiles from spleens collected at 28 hours from 4 animals per group: sham/saline, CLP/saline, and CLP/MSCs.
2010-11-22 | E-GEOD-24357 | biostudies-arrayexpress
Project description:Expression data from Total RNA extracted from murine spleen, liver, lungs, kidneys and hearts. Sepsis was induced in C57Bl/6J mice by cecal ligation and puncture (CLP), followed 6 hours later by an intravenous injection of Mesenchymal Stem Cell (MSC) or saline. Twenty-eight hours after CLP, plasma, bronchoalveolar lavage (BAL) fluid and tissues were collected for analyses. Total RNA was extracted using Trizol (as per manufactures' instruction) followed by clean-up procedure using Qiagen RNA easy Prep (as per manufactures instructions) In the following study we hypothesized that mesenchymal stem cells (MSCs), which have documented immunomodulatory properties, would reduce sepsis-associated inflammation and organ injury in a clinically relevant model of sepsis. To identify the molecular changes associated with decreased inflammation in CLP-injured mice treated with MSCs, we analyzed the gene expression profiles from spleens, liver, lungs, kidneys and heart collected at 28 hours from 4 animals per group: sham/saline, CLP/saline, and CLP/MSCs.
2012-12-31 | E-GEOD-40180 | biostudies-arrayexpress
Project description:Phagocytosis represents a mechanism used by macrophages to remove pathogens and cellular debris. Recent evidence suggested that amino acid or glucose deprivation may cause an increase in phagocytosis of heat-inactivated Escherichia coli and Staphylococcus aureus by macrophages, but not the uptake of platelets, apoptotic cells or beads. Increased phagocytosis of bacteria could be blocked by phagocytosis inhibitors and depended on p38 MAP kinase activity. To examine potentially important downstream pathways linked to EBSS-induced starvation and p38 MAP kinase activation, a full genome microarray representing over 41,000 mouse genes or transcripts was probed with cDNA isolated from J774A.1 macrophages that were treated with EBSS, EBSS supplemented with the p38 inhibitor SB202190 or control medium supplemented with 10% fetal bovine serum. Keywords: autophagy, heterophagy, p38 MAP kinase, scavenger receptor A, starvation
2009-02-05 | GSE14293 | GEO
Project description:Purpose: Chronic pulmonary inflammation in the form of chronic obstructive pulmonary disease (COPD) has been consistently shown to increase the risk of lung cancer. Therefore, identification of chemopreventive agents with anti-inflammatory effects, in addition to antiproliferative and apoptotic activities, is indispensable. Recently, we found that combinations of silibinin (Sil) and indole-3-carbinol (I3C) significantly inhibited lung tumorigenesis induced by 4-(methylnitro-samino)-1-(3-pyridyl)-1-butanone (NNK) and enhanced by chronic treatment with the inflammatory agent lipopolysaccharide (LPS). In this study, we described gene expression profiling of lung tissues using RNA-seq to determine the gene expression signature in inflammation-driven lung tumors and modulation of this signature by the chemopreventive agents Sil and I3C. Methods: Total RNA extracted from lung tissues of control and treated mice were processed for mRNA sequencing, in triplicate, using Illumina HiSeq 2000. The sequence reads that passed quality filters were analyzed for transcript abundance at the gene level using CLC Bio Genomics Workbench and differential gene expression analysis was performed using the built-in Empirical Analysis of Differential Gene Expression (DGE) based on 'Exact Test' method. qRTâPCR validation was performed using SYBR Green assays. Results and conclusions: We found that 330, 2,957, and 1,143 genes were differentially regulated in mice treated with NNK, LPS, and NNK + LPS, respectively. The expression of inflammation-and immunity-related genes was significantly more deregulated in lung tissues of mice treated with LPS alone compared to mice treated with NNK + LPS. Among 1,143 genes differentially regulated in the NNK + LPS group, the expression of 162 genes and associated signaling pathways were significantly modulated by I3C and/or Sil + I3C. These genes include cytokines, chemokines, and genes with a well-established role in inflammation and/or tumorigenesis such as c-ros oncogene 1 (Ros1), the EGFR ligands amphiregulin and epiregulin, Cyp1a1, and the circadian rhythm genes Arntl, and Npas2. To our knowledge, this is the first report that provides insight into genes that are differentially expressed during inflammation-driven lung tumorigenesis and the modulation of these genes by chemopreventive agents. Lung tissue mRNA profiles of mice treated with control vehicle, NNK, LPS, NNK+LPS, or NNK+LPS supplemented with chemopreventive agent(s) were generated by deep sequencing, in triplicate, using Illumina HiSeq 2000.
2016-07-03 | E-GEOD-64027 | biostudies-arrayexpress
Project description:Background & Aims: Ursodeoxycholic acid (UDCA) attenuates chemical and colitis-induced colon carcinogenesis in animal models. We investigated its mechanism of action on normal intestinal cells, in which carcinogenesis- or inflammation-related alterations do not interfere with the result. Methods: Alterations of gene expression were identified in Affymetrix arrays in isolated colon epithelium of mice fed with a diet containing 0.4% UDCA and were confirmed in the normal rat intestinal cell line IEC-6 by RT-PCR. The effect of the insulin receptor substrate 1 (Irs-1) expression and of ERK phosphorylation on proliferation was investigated in vitro by flow cytometry, western blotting, siRNA-mediated gene suppression or by pharmacological inhibition of the kinase activity. The ERK1-effect on Irs-1 transcription was tested in a reporter system. Results: UDCA-treatment in vivo suppressed potential pro-proliferatory genes including Irs-1 and reduced cell proliferation by more than 30%. In vitro it neutralised the proliferatory signals of IGF-1 and EGF and slowed down the cell cycle. Irs-1 transcription was suppressed due to high ERK1 activation. Both Irs-1 suppression and the persistent high ERK activation inhibited proliferation. Conversely, the decrease of phosphorylation of ERK1 (but not ERK2) or of its expression partially abrogated the inhibitory effects of UDCA. Conclusions: UDCA inhibits proliferation of intestinal epithelial cells by acting upon IGF-1 and EGF pathways and targeting ERK1 and, consequently, Irs-1. The inhibition of these pathways adds a new dimension to the physiological and therapeutic action of UDCA and, since both pathways are activated in inflammation and cancer, suggests new applications of UDCA in chemoprevention and chemotherapy. Six normal mice were used for isolation of control RNA and six mice were used for isolation of RNA after UDCA treatment. RNAs of two animals were pooled i.e. there were six treated samples, named T1+2;T3+4,T5+6 and six nontreated samples named N1+2;N3+4 and N5+6.
2011-07-01 | E-GEOD-21266 | biostudies-arrayexpress
Project description:Transcriptional profiling of J7774A.1 cells treated with ManLAM ( 5ug/ml) for 6 h in the absence or presence of GW9662 J774A.1 cells were treated wit ManLAM either in the absence or presence of GW9662 for 6 h followed by total RNA isolation. Total RNA was labelled with Agilent’s quick-Amp labelling kit (p/n: 5190-0444) to generate fluorescent complementary RNA by using T7 promoter based linear amplification. The control sample was labelled with Cy3 while the infected samples were labelled with Cy5 and hybridized to an Agilent oligo microarray kit.
2015-09-02 | E-GEOD-72591 | biostudies-arrayexpress