Gene expression profiles from human splenic and circulating neutrophils
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE63298 | GEO | 2015/11/12
SECONDARY ACCESSION(S): PRJNA267223
REPOSITORIES: GEO
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Project description:Compared to circulating neutrophils (NC cells), splenic neutrophils (NBH cells) have an activated phenotype and enhanced B cell-helper activity. The transcriptome analysis of splenic and circulating neutrophils was performed to verify whether the enhanced B cell-helper activity of splenic neutrophils correlated with a specific gene signature. Unstimulated neutrophils were FACS sorted from the peripheral blood and spleen of six adult healthy subjects for RNA isolation and Agilent analysis.
2015-11-12 | E-GEOD-63298 | biostudies-arrayexpress
Project description:Recent literature has shown that neutrophils exert significant influence on the course of disease progression in lupus, but there is currently controversy in the lupus field regarding a) whether neutrophils are predominantly protective or deleterious toward the propagation of auto-reactivity, b) the specific mechanism of neutrophil influence on adaptive immune dysregulation, and c) identity and origin of functionally abnormal neutrophil subsets in lupus. Here we used RNA sequencing of splenic neutrophils isolated from a murine lupus model (NZB/W) to characterize changes in the transcriptional program of neutrophils over the course of lupus progression. We find that the transcription of immunologically relevant genes change over the course of disease, and that lupus neutrophils early in disease show enrichment for transcripts associated with neutrophil precursors. These data provide the first detailed profile of the splenic neutrophil transcriptional program changes during the progression of lupus.
2017-05-10 | GSE97439 | GEO
Project description:Although the accumulation of neutrophils in the lungs and airways is common to many inflammatory lung diseases, including acute lung injury, the alterations that neutrophils undergo as they leave the peripheral circulation and migrate into the lungs have not been well characterized. Human volunteers were exposed to endotoxin by bronchoscopic instillation. The resulting air space neutrophil accumulation and peripheral blood neutrophils were isolated 16 h later, compared with circulating neutrophils isolated before or after to the pulmonary endotoxin exposure, and compared with circulating neutrophils exposed to endotoxin in vitro. Microarray analysis was performed on air space, circulatory, and in vitro endotoxin-stimulated neutrophils. Functional analysis included the determination of neutrophil apoptosis, chemotaxis, release of cytokines and growth factors, and superoxide anion release. Dramatic gene expression differences were apparent between air space and circulating neutrophils: approximately 15% of expressed genes have altered expression levels, including broad increases in inflammatory- and chemotaxis-related genes, as well as antiapoptotic and IKK-activating pathways. Functional analysis of air space compared with circulating neutrophils showed increased superoxide release, diminished apoptosis, decreased IL-8-induced chemotaxis, and a pattern of IL-8, macrophage inflammatory protein-1beta, monocyte chemoattractant protein-1, and tumor necrosis factor-alpha release different from either unstimulated or LPS-stimulated circulating neutrophils. Many of these changes are not elicited by in vitro treatment with endotoxin. Limited differences were detected between circulating neutrophils isolated before and 16 h after pulmonary endotoxin instillation. These results suggest that neutrophils sequestered in the lung become fundamentally different from those resident in the circulation, and this difference is distinct from in vitro activation with endotoxin.
2007-10-02 | E-GEOD-2322 | biostudies-arrayexpress
Project description:Polymorphonuclear cells (neutrophils) play an important role in the systemic inflammatory response syndrome and the development of sepsis. These cells are essential for the defense against microorganisms, but may also cause tissue damage. Therefore, neutrophil numbers and activity are considered to be tightly regulated. Previous studies have investigated gene transcription during experimental endotoxemia in whole blood and peripheral blood mononuclear cells. However, the gene transcription response of the circulating pool of neutrophils to systemic inflammatory stimulation in vivo is currently unclear. We examined neutrophil gene transcription kinetics in healthy human subjects (n=4) administered a single dose of endotoxin (LPS, 2 ng/kg iv). In addition, freshly isolated neutrophils were stimulated ex vivo with LPS, TNFM-NM-1, G-CSF and GM-CSF to identify stimulus-specific gene transcription responses. Whole transcriptome microarray analysis of circulating neutrophils at 2, 4 and 6 hours after LPS infusion revealed activation of inflammatory networks which are involved in signaling of TNFM-NM-1 and IL-1M-NM-1 and IL-1M-NM-2. The transcriptome profile of inflammatory activated neutrophils in vivo reflects extended survival and regulation of inflammatory responses. We show that these changes in neutrophil transcriptome are most likely due to a combination of early activation of circulating neutrophils by TNFM-NM-1 and G-CSF and a mobilization of young neutrophils from the bone marrow. After LPS infusion blood was taken at t=0, t=2, t=4 and t=6 hours. Neutrophils were isolated and gene expression of these cells was assessed. T=2, t=4 and t=6 were related to t=0 as control condition
2012-06-04 | E-GEOD-35590 | biostudies-arrayexpress
Project description:[Background] TNFa-induced adipose-related protein (TIARP) is a six-transmembrane protein that is expressed on macrophages, neutrophils and synoviocytes. We have recently reported that TIARP deficient mice (TIARP-/-) spontaneously developed arthritis, and had the high susceptibility to collagen-induced arthritis (CIA) with enhanced interleukin (IL)-6 production. However, the effect of TIARP to neutrophils and fibroblast-like syonoviocytes (FLS) has not been clearly elucidated. [Methods] We analyzed the roles of TIARP in K/BxN serum transfer model using TIARP-/- mice. We characterized the differences of neutrophils between WT and TIARP-/- mice by DNA microarray. Transmigration assays of TIARP-/- neutrophils were performed in vitro and in vivo. FLS were cultured with TNF? and the production of CXCL2 (a specific ligand of CXCR1 and CXCR2) and IL-6 were measured by ELISA. Moreover, TIARP-/- mice transferred with K/BxN serum were treated with anti-IL-6R antibodies. [Results] Arthritis in TIARP-/- mice transferred with K/BxN serum was significantly exacerbated. We identified overexpression of CXCR1 and CXCR2 in TIARP-/- neutrophils by DNA microarray. Neutrophils from TIARP-/- mice showed strong migration activity. The enhancement of chomotactic activity of TIARP-/- neutrophil was greatly facilitated by CXCL2 in vitro and in vivo. In addition, TIARP-/-FLS has enhanced the production of CXCL2 and IL-6 and the cell proliferation in the presence of TNFa, and the blockade of IL-6R significantly attenuated arthritis in vivo. [Conclusion] Our findings indicate that TIARP might down-regulate the production of CXCL2 and IL-6 in FLS, and the expression of chemokine receptors (CXCR1 and CXCR2) in neutrophils, resulting in the protective ability of neutrophils migration into arthritic joints. Mice were treated with thiogycollate medium intraperitoneally. After 3 days, peritoneal macrophages were isolated from three WT or TIARP-deficient mice, and these cells were stimulated by TNF? for 24 hours. Ly6G+ Neutrophils were isolated from splenocytes by MACS.
2015-09-23 | E-GEOD-73306 | biostudies-arrayexpress
Project description:Human volunteers were exposed to endotoxin by bronchoscopic instillation, airspace and circulating neutrophils were isolated 16 hours later and compared to circulating neutrophils obtained prior to endotoxin exposure, and to circulating neutrophils exposed to endotoxin in vitro. Keywords = pulmonary inflammantion Keywords = acute lung injury Keywords = acute respiratory distress syndrome Keywords: parallel sample
2006-01-01 | GSE2322 | GEO
Project description:To investigate the difference among neutrophils circulating in the blood, and those infiltrating in the metastatic organ, we isolated peripheral blood (PB) and lung neutrophils from AT3 tumor-bearing mice. Total RNA was isolated from neutrophils and the transcriptional profiles of neutrophils were analyzed by RNA seq.
2022-12-12 | E-MTAB-12365 | biostudies-arrayexpress
Project description:Polymorphonuclear cells (neutrophils) play an important role in the systemic inflammatory response syndrome and the development of sepsis. These cells are essential for the defense against microorganisms, but may also cause tissue damage. Therefore, neutrophil numbers and activity are considered to be tightly regulated. Previous studies have investigated gene transcription during experimental endotoxemia in whole blood and peripheral blood mononuclear cells. However, the gene transcription response of the circulating pool of neutrophils to systemic inflammatory stimulation in vivo is currently unclear. We examined neutrophil gene transcription kinetics in healthy human subjects (n=4) administered a single dose of endotoxin (LPS, 2 ng/kg iv). In addition, freshly isolated neutrophils were stimulated ex vivo with LPS, TNFα, G-CSF and GM-CSF to identify stimulus-specific gene transcription responses. Whole transcriptome microarray analysis of circulating neutrophils at 2, 4 and 6 hours after LPS infusion revealed activation of inflammatory networks which are involved in signaling of TNFα and IL-1α and IL-1β. The transcriptome profile of inflammatory activated neutrophils in vivo reflects extended survival and regulation of inflammatory responses. We show that these changes in neutrophil transcriptome are most likely due to a combination of early activation of circulating neutrophils by TNFα and G-CSF and a mobilization of young neutrophils from the bone marrow.
2012-06-05 | GSE35590 | GEO
Project description:Exercise leads to a rapid change in the profile of gene expression in circulating neutrophils. We hypothesized that miRNA expression in circulating neutrophils would also be affected by brief exercise.
2010-03-31 | GSE18999 | GEO
Project description:It was previously demonstrated that myeloid cells assume a distinct transcriptional profile when infiltrating the brain during chronic inflammation. We demonstrated that neutrophils infiltrate the brain during pancreatic cancer. To determine if the transcriptional profile of brain-infiltrating neutrophils is distinct from those infiltrating other organs, we compared the gene signatures of brain-infiltrating neutrophils, circulating neutrophils, liver-infiltrating neutrophils, and tumor-infiltrating neutrophils to that of circulating neutrophils from healthy mice.
2020-05-08 | GSE150061 | GEO