Transcription profiling by array of mouse peritoneal macrophages after treatment with histidine-rich glycoprotein
ABSTRACT: Histidine-rich glycoprotein (HRG) is a 75 kDa heparin-binding plasma protein which has been implicated in regulation of tumor angiogenesis and growth. To exert some of its biological functions, HRG acts on macrophages.This study was performed to assess changes in gene expression in peritoneal macrophages treated with HRG using oligonucleotide microarrays A total of 8 samples were analyzed. Peritoneal macrophages were pooled from 10 wt C57/BL6 mice and treated with recombinant HRG (1ug/ml) for 6 and 24 hours in duplicates
Histidine-rich glycoprotein (HRG) is a 75-kDa heparin-binding plasma protein implicated in the regulation of tumor growth and vascularization. In this study, we show that hrg(-/-) mice challenged with fibrosarcoma or pancreatic carcinoma grow larger tumors with increased metastatic properties. Compared with wild-type mice, fibrosarcomas in hrg(-/-) mice were more hypoxic, necrotic, and less perfused, indicating enhanced vessel abnormalization. HRG deficiency was associated with a suppressed anti ...[more]
Project description:HRG is a 75kDa heparin-binding protein non to extert gene regultaion changes on macropahges. To assess the effect of HRG on Enodothelial Cell gene regulation Human Umbilical Vein Endothelial Cells (HUVECs) were treated with Histidine-Rich Glycoprotein (HRG) 24 hour treatment with HRG. and examined for gene regulation changes versus untreated HUVECs after 6 and Overall design: A total of 8 samples were analysed. HUVECs were treated with HRG (1ug/ml) or PBS (control) in culture for 6 and 24 hours after treatment in duplicate.
Project description:LECT2 is a liver derived cytokine and involved in many pathologic conditions, especially in immune regulation. To better understand cellular and molecular mechanisms of LECT2 in immune response, mouse peritoneal macrophages were isolated from mouse peritonaeum. After treatment with 0, 0.5 or 5 μg/ml of LECT2 for 3.5 or 48 hours, gene expression profile in mouse peritoneal macrophages was measured using gene expression array. Results showed that LECT2 treatment led to the enhancement of cytokines secretion and phagocytosis in peritoneal macrophages. Gene expression in mouse peritoneal macrophages isolated from mouse peritonaeum were measured after exposure to 0,0.5 or 5 μg/ml LECT2 for 3.5 or 48 hours using gene expression array. Two independent experiments were performed using different mice for each experiment for gene expression array analysis.
Project description:This SuperSeries is composed of the following subset Series: GSE31529: Genome-wide binding of STAT3 in peritoneal macrophages GSE31530: Transcriptome changes in IL-10 treated peritoneal macrophages Refer to individual Series
Project description:Macrophage activation must be tightly controlled to prevent overzealous responses that cause self-damage. MicroRNAs have been shown to promote classical macrophage activation by blocking concomitant anti-inflammatory signals and transcription factors, but can also place restraints on activation by preventing excessive TLR-signalling. In contrast, the microRNA profile associated with alternatively activated macrophages and their role in regulating wound-healing or anti-helminthic responses has not yet been described. Utilizing an in vivo model of alternative activation, in which adult Brugia malayi nematodes are surgically implanted in the peritoneal cavity of mice, we examined the profile of microRNA expression in these alternatively activated macrophages and compared this to alternatively activated IL-4 receptor knockout macrophages and thioglycollate elicited macrophages. Peritoneal macrophages from BALB/c wild type or IL-4 receptor knockout mice were elicited with thioglycollate or using nemtodes (peritoneal implant of Brugia malayi). The latter leads to a population of alternatively activated macrophages. Microarray analysis was used to examine the microRNA profile of WT alternatively activated macrophages (n = 4), IL-4 receptor knockout alternatively activated macrophages (n = 4), WT thioglycollate elicited macrophages (n = 3) and IL-4 receptor knockout thioglycollate elicited macrophages (n = 3).
Project description:In this study, we employed the Illumina Genome Analyzer platform to perform a Digital Gene Expression (DGE) analysis of the peritoneal macrophages genome-wide transcriptome response to B.melitensis infection. Common changes in gene expression were observed among Brucella app. infected macrophages suggesting similar strategies were employed for their survival and replication, inducing anti-inflammatory and anti-apoptotic. A total of 1019 differentially expressed (DE) transcripts were identified in the macrophages 4 hours after differ virluent B.melitensis infection, especially genes participated lysosome pathway and MAPK pathway. Our findings demonstrate previously unrecognized changes in gene transcription that are associated with B.melitensis infection in the macrophages, and many significant pathways (cascades) identified in the study clearly merit further investigation. Our data provide new clues to understand the molecular attenuation mechanism of M5-90 and a firm foundation for reducing vaccine residual virulence, enhancing vaccine efficacy. Examination oftwo peritoneal macrophages infected brucella and one blank control.
Project description:Macrophages are a major cellular component of all inflammatory situations, generating proinflammatory cytokines such as TNF-alpha, IL-1, and IL-6 that are central to the initiation and maintenance of inflammation. To determine whether the tumor suppressor ARF plays a role in inflammatory gene expression, we used an 84-gene RT2 PCR array to examine the expression of inflammation-associated genes in WT and ARF-deficient macrophages treated with the TLR4 ligand LPS. Peritoneal macrophages from WT and ARF-deficient mice were obtained and treated with LPS (200ng/ml) for 4 hours. WT control (without stimulation n=4), WT LPS (n=4), ARF Control (n=4), ARF LPS (n=4)
Project description:PPARg is a nuclear receptor that plays an important role in lipid metabolism, homeostasis and immunity. Microarray analysis of gene expression was performed in macrophages from WT and PPARg KO mice. Differentially expressed genes were selected for further analysis. RNA from WT and PPARg KO macrophages was purified for hybridization on Affymetrix microarrays. Peritoneal macrophages were harvest from WT and PPARg KO mice 3 days after intraperitoneal injection of 2.5ml of 3% thioglycollate.
Project description:Biologic functions involved in innate immune response of macrophages rely on the precise regulation of kinds of immune molecular. In the virus infection procession, the macrophages are activated following a tightly controlled genetic programme where specific sets of genes are up-regulated or down-regulated. We used microarrays to detail the global programme of gene expression underlying VSV infection and identified distinct classes of up-regulated and down-regulated genes during this process. Mouse peritoneal macrophages were selected with/without VSV infection for 8 hours for RNA extraction and hybridization on Affymetrix microarrays. We sought to obtain expression profiles. We selected macrophages according to VSV infection at two time-points: uninfected macrophage(control) and VSV infected for 8 hour macrophages(VSV).