Name: Microarray analysis of Huh7 cells treated with IFNa2, OSM or IFNa2 combined with OSM
Keywords: transcription profiling by array

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Microarray analysis of Huh7 cells treated with IFNa2, OSM or IFNa2 combined with OSM

ABSTRACT: OSM increases the antiviral effect of IFNα in Huh7 cells infected with hepatitis A virus (HAV) or HCV replicon and synergizes with IFNα in the induction of antiviral genes 16 samples. Four replicates for each experimental condition. 72 hours of treatment in DMEM supplemented with 2% FBS.

ORGANISM(S): Homo sapiens

SUBMITTER: Jesus Prieto Iranzu González Rafael Aldabe Pablo Sarobe Iranzu Gonzalez Esther Larrea Victor Segura

PROVIDER: E-GEOD-13046 | ArrayExpress | 2009-01-20

SECONDARY ACCESSION(S): GSE13046PRJNA109957

REPOSITORIES: GEO, ArrayExpress

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Oncostatin M enhances the antiviral effects of type I interferon and activates immunostimulatory functions in liver epithelial cells.

Larrea Esther E Aldabe Rafael R Gonzalez Iranzu I Segura Victor V Sarobe Pablo P Echeverria Itziar I Prieto Jesus J

Journal of virology 20090121 7

Oncostatin M (OSM) is released together with type I interferon (IFN) by activated dendritic cells, suggesting a concerted action of these cytokines in the biological response against infection. We found that OSM increases the antiviral effect of IFN-alpha in Huh7 hepatoma cells infected with hepatitis A or hepatitis C virus and synergizes with IFN-alpha in the induction of antiviral genes. The combination of OSM and IFN-alpha led to upregulation of both STAT1 and STAT3 together with intense and ...[more]

PMID: 19158240

Similar Datasets

Microarray analysis of Huh7 cells treated with IFNa2, OSM or IFNa2 combined with OSM

Project description:OSM increases the antiviral effect of IFNα in Huh7 cells infected with hepatitis A virus (HAV) or HCV replicon and synergizes with IFNα in the induction of antiviral genes Overall design: 16 samples. Four replicates for each experimental condition. 72 hours of treatment in DMEM supplemented with 2% FBS.

2009-01-21 | GSE13046 | GEO

Transcription profiling by arrayof HCT116 cells after stimulation with oncostatin M (OSM) against untreated controls to study the role of OSM in intestinal inflammation

Project description:To evaluate gene expression profiles in intestinal epithelial cells (IEC) after OSM stimulation, we have employed whole genome microarray expression profiling as a discovery platform to identify relevant genes which are potentially of interest to reveal the role of OSM in intestinal inflammation. The most strongly up-regulated genes were SERPINS, which belong to the family of serin peptidase inhibitors with antiprotease activities, most of them serine and cysteine proteases. SERPINB4, SERPINB3 and SERPINA3 were the genes with the strongest up-regulation, also verified in qPCR. OSM-induced SERPIN up-regulation may contribute to anti-apoptotic and proliferative effects of OSM in IEC. HCT116 cells were starved overnight with medium containing 1% FCS after reaching 70% confluency. On the next day, cells were stimulated in quadruplicates with 100 ng/mL OSM or left unstimulated. RNA was isolated 6 hours after stimulation and RNA concentration and purity was measured.

2014-12-13 | E-GEOD-53295 | ArrayExpress

Transcription profiling by array of hepatocellular carcinoma cell lines following treatment with STAT3 shRNA and IL-6, IL-27 or IFN-gamma

Project description:Interleukin-27 (IL27) is a type-I-cytokine of the IL6/IL12 family predominantly secreted by activated macrophages and dendritic cells. Best understood are the effects of IL27 on immune cells where it has been described to have pro- or anti-inflammatory properties, either promoting TH1 responses or suppressing TH1 and TH2 responses. The action on other cell types is less well studied. In the liver, IL27 expression was observed to be upregulated in patients with hepatitis B, and sera of hepatocellular carcinoma (HCC) patients contain significantly elevated levels of IL27 compared to healthy controls or patients with hepatitis and/or liver cirrhosis. We previously reported interferon-gamma-like antiviral activity of IL27 in hepatic cells. Here we further studied the effects of IL27 on HCC cells in comparison to other cytokines. We were especially interested in the relevance of the IL27-induced STAT3 activation. Thus we compared its response with those induced by IFNg (STAT1-dominated response) or IL6-type cytokines (IL6, Hyper-IL6 or OSM) (STAT3-dominated response). We find that in hepatocytes, IL27 induces an IFNg-like, STAT1-dependent transcriptional response, but we do not find an effective STAT3-dependent response. The availability of STAT1 seems critical in the shaping of the IL27 response, as the siRNA knock-down of STAT1 revealed its ability to induce the acute-phase protein gamma-fibrinogen, a typical IL6 family characteristic. Moreover, we describe a crosstalk between the signaling of IL6-type cytokines and IL27: responses to the gp130-engaging cytokine IL27 (but not those to IFNs) can be inhibited by IL6-type cytokine pre-stimulation, likely by a SOCS3-mediated mechanism. This experiment represents microarray analysis of three hepatocellular carcinoma cell lines treated with IL-27, IFNg, hyper-IL6 or OSM in combination with shRNA knockdown of STAT3.

2017-07-05 | E-MTAB-4570 | ArrayExpress

Response of several cell lines originated from liver, skin and colon to stimulation by IFNg, hyper-IL6, IL27 and OSM, investigated at mRNA level

Project description:In this study 6 cell lines originated from liver, skin and colon tumours as well as 3 non-tumour cell lines from the same organs were profiled with and without stimulation by 4 cytokines: IFNg, hyper-IL6, IL27 and OSM. The main objective was investigation of downstream effects of the stimulation if these cancer cell lines as well as in healthy tissues.

2018-10-01 | E-MTAB-6080 | ArrayExpress

Gene-expression analysis of Oncostatin-M (OSM) signalling in cervical squamous cell carcinomas over-expressing the Oncostatin-M receptor (OSMR)

Project description:The type II Oncostatin M receptor (OSMR) serves as the main binding site for the pleiotropic cytokine OSM. We have previously demonstrated a positive correlation between copy number driven OSMR over-expression and adverse clinical outcome in cervical tumours and have also established enhanced angiogenic, migratory and invasive potential as major consequences of OSMR over-expression using cell-line models of cervical cancer. By analysis of gene expression patterns in cell lines and tumours, this study now systematically defines cohorts of genes that are implicated for the phenotypes observed. Importantly, we have identified 15 OSM induced genes that are involved in at least one of these key functions and are up-regulated in both OSMR over-expressing cell-lines and tumours. These genes can serve as markers of OSM signalling in OSMR over-expressing SCCs and represent suitable targets for functional characterisation. Gene expression of 4 cervical SCC cell lines analysed (2 with and 2 without OSMR overexpression) at 6 different time-points, with 3 replicates at each time-point.

2011-09-29 | E-GEOD-27480 | ArrayExpress

Oncostatin M enhances the antiviral effects of type I interferon and activates immunostimulatory functions in liver epithelial cells.

Project description:Oncostatin M (OSM) is released together with type I interferon (IFN) by activated dendritic cells, suggesting a concerted action of these cytokines in the biological response against infection. We found that OSM increases the antiviral effect of IFN-alpha in Huh7 hepatoma cells infected with hepatitis A or hepatitis C virus and synergizes with IFN-alpha in the induction of antiviral genes. The combination of OSM and IFN-alpha led to upregulation of both STAT1 and STAT3 together with intense and prolonged activation of STAT1, STAT3, and Jak1. OSM with or without IFN-alpha also activated p38 mitogen-activated protein kinase, which is known to enhance transcription of IFN-alpha-inducible genes. Interestingly, OSM combined with IFN-alpha strongly induced immunoproteasome genes and other genes involved in antigen processing and presentation. Moreover, OSM, alone or in combination with IFN-alpha, upregulated relevant innate immunity molecules and increased the expression of intracellular adhesion molecule 1 and interleukin-15 receptor alpha (IL-15Ralpha) in liver cells. Hepatoma cells transfected with a plasmid encoding a viral antigen were able to activate effector T cells when pretreated with IFN-alpha plus OSM but not with each cytokine separately. Also, OSM, more than IFN-alpha, augmented the ability of Huh7 cells to transpresent IL-15 to responding lymphocytes and increased the immunostimulatory activity of liver epithelial cells by presenting a short viral peptide to sensitized cytotoxic T cells. In conclusion, OSM enhances the antiviral effects of type I interferon and cooperates with it in the induction of adaptive immune responses to pathogens. These findings may have therapeutic implications.

2009-01-01 | S-EPMC2655580 | BioStudies

IFNα-mediated gene expression patterns

Project description:This SuperSeries is composed of the following subset Series: GSE17299: Direct effects of IFNα on human CD8 T cells_without any other concomitant signals GSE17301: The effect of IFNα on human CD8 T cells_with other concomitant signals Refer to individual Series

2010-07-23 | E-GEOD-17302 | ArrayExpress

The AB loop and D-helix in binding site III of human Oncostatin M (OSM) are required for OSM receptor activation.

Project description:Oncostatin M (OSM) and leukemia inhibitory factor (LIF) are closely related members of the interleukin-6 (IL-6) cytokine family. Both cytokines share a common origin and structure, and both interact through a specific region, termed binding site III, to activate a dimeric receptor complex formed by glycoprotein 130 (gp130) and LIF receptor (LIFR) in humans. However, only OSM activates the OSM receptor (OSMR)-gp130 complex. The molecular features that enable OSM to specifically activate the OSMR are currently unknown. To define specific sequence motifs within OSM that are critical for initiating signaling via OSMR, here we generated chimeric OSM-LIF cytokines and performed alanine-scanning experiments. Replacement of the OSM AB loop within OSM's binding site III with that of LIF abrogated OSMR activation, measured as STAT3 phosphorylation at Tyr-705, but did not compromise LIFR activation. Correspondingly, substitution of the AB loop and D-helix in LIF with their OSM counterparts was sufficient for OSMR activation. The alanine-scanning experiments revealed that residues Tyr-34, Gln-38, Gly-39, and Leu-45 (in the AB loop) and Pro-153 (in the D-helix) had specific roles in activating OSMR but not LIFR signaling, whereas Leu-40 and Cys-49 (in the AB loop), and Phe-160 and Lys-163 (in the D-helix) were required for activation of both receptors. Because most of the key amino acid residues identified here are conserved between LIF and OSM, we concluded that comparatively minor differences in a few amino acid residues within binding site III account for the differential biological effects of OSM and LIF.

2018-01-01 | S-EPMC5936835 | BioStudies

OSM-11 facilitates LIN-12 Notch signaling during Caenorhabditis elegans vulval development.

Project description:Notch signaling is critical for cell fate decisions during development. Caenorhabditis elegans and vertebrate Notch ligands are more diverse than classical Drosophila Notch ligands, suggesting possible functional complexities. Here, we describe a developmental role in Notch signaling for OSM-11, which has been previously implicated in defecation and osmotic resistance in C. elegans. We find that complete loss of OSM-11 causes defects in vulval precursor cell (VPC) fate specification during vulval development consistent with decreased Notch signaling. OSM-11 is a secreted, diffusible protein that, like previously described C. elegans Delta, Serrate, and LAG-2 (DSL) ligands, can interact with the lineage defective-12 (LIN-12) Notch receptor extracellular domain. Additionally, OSM-11 and similar C. elegans proteins share a common motif with Notch ligands from other species in a sequence defined here as the Delta and OSM-11 (DOS) motif. osm-11 loss-of-function defects in vulval development are exacerbated by loss of other DOS-motif genes or by loss of the Notch ligand DSL-1, suggesting that DOS-motif and DSL proteins act together to activate Notch signaling in vivo. The mammalian DOS-motif protein Deltalike1 (DLK1) can substitute for OSM-11 in C. elegans development, suggesting that DOS-motif function is conserved across species. We hypothesize that C. elegans OSM-11 and homologous proteins act as coactivators for Notch receptors, allowing precise regulation of Notch receptor signaling in developmental programs in both vertebrates and invertebrates.

2008-01-01 | S-EPMC2504490 | BioStudies

Autoinhibition regulates the motility of the C. elegans intraflagellar transport motor OSM-3.

Project description:OSM-3 is a Kinesin-2 family member from Caenorhabditis elegans that is involved in intraflagellar transport (IFT), a process essential for the construction and maintenance of sensory cilia. In this study, using a single-molecule fluorescence assay, we show that bacterially expressed OSM-3 in solution does not move processively (multiple steps along a microtubule without dissociation) and displays low microtubule-stimulated adenosine triphosphatase (ATPase) activity. However, a point mutation (G444E) in a predicted hinge region of OSM-3's coiled-coil stalk as well as a deletion of that hinge activate ATPase activity and induce robust processive movement. These hinge mutations also cause a conformational change in OSM-3, causing it to adopt a more extended conformation. The motility of wild-type OSM-3 also can be activated by attaching the motor to beads in an optical trap, a situation that may mimic attachment to IFT cargo. Our results suggest that OSM-3 motility is repressed by an intramolecular interaction that involves folding about a central hinge and that IFT cargo binding relieves this autoinhibition in vivo. Interestingly, the G444E allele in C. elegans produces similar ciliary defects to an osm-3-null mutation, suggesting that autoinhibition is important for OSM-3's biological function.

2006-01-01 | S-EPMC2064385 | BioStudies

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