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Transcriptional analysis of resting or inflamed murine Macrophages with Immune complex stimulation

ABSTRACT: We wished to investigate differential effects of stimulation with immune complex on colonic macrophages taken from mice which were either healthy or had DSS induced colitis.

ORGANISM(S): Mus musculus

PROVIDER: GSE109040 | GEO | 2019/03/18

REPOSITORIES: GEO

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Transcriptional analysis of resting or inflamed murine Macrophages with Immune complex stimulation

Project description:Transcriptional analysis of resting or inflamed murine Macrophages with Immune complex stimulation

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Suppression of plasmacytoid dendritic cell migration by compounds derived from natural medicines

Project description:Background and Aims. Dendritic cells (DCs) play a pivotal role in maintaining immunological homeostasis by orchestrating innate and adaptive immune responses via migration to inflamed sites and the lymph nodes (LNs). Plasmacytoid DCs (pDCs) have been reported to accumulate in the colon of inflammatory bowel disease (IBD) patients and dextran sulfate sodium (DSS)-induced colitis mice. However, the role of pDCs in the progression of colonic inflammation remains unclear. Methods. 80 compounds in natural medicines were searched for inhibitors of pDC migration using bone marrow-derived pDCs (BMpDCs) and conventional DCs (BMcDCs). BALB/c mice were given 3% DSS in the drinking water for 7 days to induce acute colitis. Compounds, which specifically inhibited pDC migration, were administrated into DSS-induced colitis mice. Results. Astragaloside IV (As-IV) and oxymatrine (Oxy) suppressed BMpDC migration but not BMcDC migration. In DSS-induced colitis mice, the number of pDCs was markedly increased in the colonic lamina propria (LP), and the expression of CCL21 was obviously observed in colonic isolated lymphoid follicles (ILFs). As-IV and Oxy reduced symptoms of colitis and the accumulation of pDCs in colonic ILFs but not in the colonic LP. Moreover, in a BMpDC adoptive transfer model, BMpDC migration to colonic ILFs was significantly decreased by treatment with As-IV or Oxy. Conclusion. pDCs accumulated in the colon of DSS-induced colitis mice, and As-IV and Oxy ameliorated DSS-induced colitis by suppressing pDC migration to colonic ILFs. Accordingly, the selective inhibition of pDC migration may be a potential therapeutic approach for treating colonic inflammatory diseases.

2021-07-06 | GSE167388 | GEO

Apple peel polyphenolic content as a key player for the prevention and treatment of experimental inflammatory bowel disease.

Project description:Colonic gene expression profiles of mice with DSS-induced colitis treated with apple peel polyphenolic extract Four-condition experiment: control, DSS-induced colitis, and mice treated with DAPP (two different doses (200 and 400 mg/kg/day) before or during induction and development of DSS-induced colitis.

2016-12-06 | GSE71920 | GEO

H3K27me3 analysis in mouse colonic epithelial cells

Project description:H3K27me3 statuses were analyzed in normal mouse colonic epithelial cells and in those exposed to DSS-induced colitis, and aberrant changes of H3K27me3 by DSS-induced colitis were identified.

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Anti-inflammatory properties of deep sea water in-vitro and in-vivo models of inflamed intestinal epithelium

Project description:Purpose: This study aimed to determine the effect of deep sea water (DSW) containing minerals on intestinal health, using a cell model and dextran sulfate sodium (DSS)-induced enteritis animal model. Methods: In vivo, the role of DSW was determined in DSS-induced colitis mouse model. Results: In comparison to the DSS group, colon shortening was inhibited, and disease activity and colon injury were suppressed in DSW-treated mice. RNA isolated from colonic tissues of mice in the control and experimental groups was subjected to RNA-seq. Gene expression of inflammatory genes was similar among control and HMLS mice. In the HMLS group, inflammatory pathways were suppressed through reductions in the expression of genes such as TNF-a, Nos2, and inflammatory chemokines. Conclusions: Our findings suggest that DSW intake can help to colitis, and the effects may be partially regulated by magnesium and other minerals.

2020-06-30 | GSE143378 | GEO

Loss of colonic primary cilia promotes inflammation and carcinogenesis

Project description:Primary cilia (PC) are important signaling hubs in cells and we explored their role in colorectal cancer (CRC) and colitis. In the colon we found PC to be mostly present on different subtypes of fibroblasts and exposure of mice to either chemically induced colitis-associated colon carcinogenesis (CAC) or dextran sodium sulfate (DSS)-induced acute colitis decreased PC numbers. We employed conditional knock-out strains for the PC essential genes, Kif3A and Ift88, to generate mice with reduced numbers of PC on colonic fibroblasts. These mice showed an increased susceptibility in the CAC model as well as in DSS-induced colitis. Secretome and immunohistochemical analyses of DSS-treated mice displayed an elevated production of the pro-inflammatory cytokine IL-6 in PC-deficient colons. An inflammatory environment diminished PC presence in primary fibroblast cultures. This was triggered by IL-6 as identified by RNAseq analysis together with blocking experiments, suggesting an activation loop between IL-6 production and PC loss. Notably, an analysis of PC presence on biopsies of patients with ulcerative colitis as well as CRC patients revealed decreased numbers of PC on colonic fibroblasts in pathological versus surrounding normal tissue. Taken together, we provide evidence that a decrease in colonic PC numbers promotes colitis and CRC.

2022-11-29 | PXD033440 | Pride

Single-cell profiling reveals Colonic CD8 Topography in IBD -hIL26 Mouse RNA-Seq

Project description:Aim: To assess the effect of IL-26 on mouse colonic tissue at steady state and in DSS-induced colitis through next-generation RNA sequencing of bulk RNA from colonic tissue. Results: We demonstrate an anti-inflammatory effect of IL-26 at both steady-state and after induction of DSS-colitis, through suppression of both cell recruitment and activation pathways.

2020-08-02 | GSE148505 | GEO

Anatabine ameliorates intestinal inflammation and reduces the production of pro-inflammatory factors in a dextran sulfate sodium mouse model of colitis.

Project description:Objective: In this study, we aimed to evaluate the anti-inflammatory properties of nicotine and anatabine in a dextran sulfate sodium (DSS) mouse model of ulcerative colitis (UC). Methods: C57BL/6 male mice (10 groups with 8 animals each) were orally administered nicotine at a concentration of 5 or 20 mg/kg body weight or anatabine at a concentration of 5 or 20 mg/kg body weight for a total of 21 days. Colitis was induced by oral administration of 3.5% DSS in drinking water ad libitum during days 14–21. Colonic samples were collected for transcriptomic analysis and multi-analyte profiling (MAP). Results: Oral administration of anatabine, but not nicotine, reduced the clinical symptoms of DSS-induced colitis. The result of gene expression analysis suggested that anatabine had a restorative effect on global DSS-induced gene expression profiles, while nicotine only had limited effects. Accordingly, MAP findings revealed that anatabine reduced the colonic abundance of DSS-associated cytokines and increased IL‑10 abundance. Conclusions: Our results support the reduction of inflammatory effects by anatabine in the DSS mouse model of UC.

2020-11-03 | E-MTAB-8543 | biostudies-arrayexpress

Dextran sodium sulfate treatment of wild type and Pirc rats alters colonic normal tissue gene expression

Project description:Dextran sodium sulfate (DSS) causes inflammation in the gut similar to ulcerative colitis in humans. Patients with ulcerative colitis have increased risk of developing colon cancer. We sought to determine which genes are altered in the normal colonic epithelium, and which changes depend on the Pirc mutation. 97 day old (ACIxF344)F1 wild type and Pirc male rats either untreated or given 4% DSS in the drinking water from 40-47 and 54-61 days of age, housed in 12 hour light:12 dark, ad lib feeding. Normal colonic tissue was collected from the distal colon at 97 days of age.

2014-01-14 | E-GEOD-54005 | biostudies-arrayexpress

miRNome of colonic crypt stem cells from DSS-induced colitis mice

Project description:To identify potential unique miRs that contribute to shaping the intestinal stemness in colitis, we analyzed the miRNome of colonic crypt stem cells from DSS-induced colitis mice.

2019-09-24 | GSE137892 | GEO

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