Inflammatory gene profiling of Ewing sarcoma family of tumors
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ABSTRACT:
ORGANISM(S): Homo sapiens
SUBMITTER: Suvi Savola
PROVIDER: E-GEOD-17679 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:Purpose: Unlike in most adult-onset cancers, an association between typical paediatric neoplasms and inflammatory triggers is rare. We studied whether immune system related genes are activated and have prognostic significance in Ewing sarcoma family of tumours (ESFT). Experimental design: Data-analysis was performed on gene expression profiles of 44 ESFT patient, 11 ESFT cell line, and 18 normal muscle tissue samples. 238 inflammation related genes were selected based on literature and a macrophage gene expression signature was derived from SymAtlas. Differential expression of the genes was analysed by t-test and survival analysis was performed according to gene expression. Results: Inflammatory genes are activated in ESFT patient samples, as 38 of 238 (16%) inflammatory genes were significantly upregulated (p<0.001) when compared to ESFT cell lines. This inflammatory gene activation was characterized by significant enrichment of macrophage related gene expression with 58 of 299 (19%) of these genes being upregulated (p<0.001). By combining expression data from ESFT patients, cell lines and muscle tissue samples we were able to identify a total of 32 presumptive inflammatory genes that characterize and distinguish tumour site in vivo from surrounding normal tissues. High expression of C5 correlated with better event free (p=0.01) and overall survival (p=0.004) in dose dependent manner. C5 and its receptor C5aR1 expression was verified at protein level by immunohistochemistry on tumor tissue microarray. Also, high expression of JAK1 correlated with favourable overall survival (p=0.04) and high expression of IL8, derived presumably from infiltrating immune cells, resulted in poor overall survival in Ewing sarcoma (p=0.04). Conclusions: Immune system related gene activation is observed in ESFT patient samples and several prognostically significant inflammatory genes (C5, JAK1 and IL8) for ESFT were identified. 44 Ewing sarcoma family of tumor patient and 18 normal muscle samples obtained from GSE6798 and GSE3526.
2011-12-01 | E-GEOD-17674 | biostudies-arrayexpress
Project description:Gene expression profiling in arterial tissue from type 2 diabetic patients 10 patients with type 2 diabetes and 11 control subjects participated in the study
2011-12-08 | E-GEOD-13760 | biostudies-arrayexpress
Project description:The expression profile of primary pediatric Ewing sarcoma (ES) and osteosarcoma (OS) were analyzed. 8 Ewing sarcoma patient samples (TUM-ES0XXX) and 10 osteosarcoma patient samples (TUM-OS0XXX) were analyzed.
2016-07-05 | E-GEOD-73166 | biostudies-arrayexpress
Project description:Ewing sarcoma (EwS) is an adolescent and young adult sarcoma characterized by chromosome translocations between members of the FET family of RNA binding proteins and members of the ETS family of transcription factors, the most frequent fusion being EWS-FLI1. EWS-FLI1 acts as a pioneer factor, creating de novo enhancers and activating genes located in the vicinity of EWS-FLI1-bound microsatellite sequences. recent results from our lab indicate that EWS-FLI1, which activates transcription through binding to the DNA at specific sites, can generate fully novel, unconventional transcription units in regions of the genome that are fully quiescent in normal cells (manuscript in preparation). The hypothesis of the project is that the open reading frames (ORFs) of these transcripts may encode peptides presented at the cell surface by HLA class I molecules and hence be recognized as non-self by the immune system. The aim of this study is to detect Ewing-specific neo-peptides/proteins using proteomics approach.
2022-05-12 | PXD027309 | Pride
Project description:Background: Ewing sarcoma, a highly aggressive tumor of children and young adults, is characterized most commonly by an 11;22 chromosomal translocation that fuses EWSR1 located at 22q12 with FLI1, coding for a member of the ETS family of transcription factors. Although genetic changes in Ewing sarcoma have been extensively researched, our understanding of the role of epigenetic modifications in this neoplasm is limited. Procedure: In an effort to improve our knowledge in the role of epigenetic changes in Ewing sarcoma we evaluated the in vitro antineoplastic effect of the DNA methyltransferase inhibitor 5-Aza-deoxycytidine (5-Aza-dC) and identified epigenetically silenced genes by pharmacologic unmasking of DNA methylation coupled with genome-wide expression profiling.
2014-03-05 | E-GEOD-44934 | biostudies-arrayexpress
Project description:Primary pediatric Ewing sarcoma (ES), one uncharacterized sarcoma as well as primary and well established ES cell lines were compared to probes of different normal tissues 8 Ewing sarcoma patient samples (MuET-x), 3 primary ES cell lines (SB-KMS-y), 3 well established ES cell lines (A673, SK-N-MC, RD-ES) and 22 normal tissues (PBMC, spleen, thymus, stomach, ...., uterus, fetal brain, fetal liver) were analyzed.
2013-05-01 | E-GEOD-45544 | biostudies-arrayexpress
Project description:Ewing sarcoma is one of the solid tumor that developed in children. We performed SNP-chip analysis against 27 specimens of Ewing sarcoma using Affymetrix GeneChip and CNAG/AsCNAR software. Our study revealed the detailed profile of copy number alterations in Ewing sarcoma. Keywords: SNP-chip To identify oncogenic lesions in Ewing sarcoma, we performed a genome-wide analysis of Ewing sarcoma samples using high-density SNP arrays (Affymetrix GeneChip).
2010-04-01 | E-GEOD-15696 | biostudies-arrayexpress
Project description:Oncogenic transformation in Ewing sarcoma tumors is driven by the fusion oncogene EWS-FLI1. The inducible expression of EWS-FLI1 (EF) in embryoid bodies, or collections of differentiating stem cells, generates cells with properties of Ewing sarcoma tumors, including characteristics of transformation. These cell lines exhibit anchorage-independent growth, a lack of contact inhibition and a strong Ewing sarcoma gene expression signature. These cells also demonstrate a requirement for the persistent expression of EWS-FLI1 for cell survival and growth. We used microarrays to detail the effects of doxycycline-inducible expression of EWS-FLI1 on the gene expression signature of cells derived from differentiating stem cells, or embryoid bodies. Triplicate biological replicates were collected and analyzed.
2015-12-31 | E-GEOD-64686 | biostudies-arrayexpress
Project description:Purpose: Unlike in most adult-onset cancers, an association between typical paediatric neoplasms and inflammatory triggers is rare. We studied whether immune system related genes are activated and have prognostic significance in Ewing sarcoma family of tumours (ESFT). Experimental design: Data-analysis was performed on gene expression profiles of 44 ESFT patient, 11 ESFT cell line, and 18 normal muscle tissue samples. 238 inflammation related genes were selected based on literature and a macrophage gene expression signature was derived from SymAtlas. Differential expression of the genes was analysed by t-test and survival analysis was performed according to gene expression. Results: Inflammatory genes are activated in ESFT patient samples, as 38 of 238 (16%) inflammatory genes were significantly upregulated (p<0.001) when compared to ESFT cell lines. This inflammatory gene activation was characterized by significant enrichment of macrophage related gene expression with 58 of 299 (19%) of these genes being upregulated (p<0.001). By combining expression data from ESFT patients, cell lines and muscle tissue samples we were able to identify a total of 32 presumptive inflammatory genes that characterize and distinguish tumour site in vivo from surrounding normal tissues. High expression of C5 correlated with better event free (p=0.01) and overall survival (p=0.004) in dose dependent manner. C5 and its receptor C5aR1 expression was verified at protein level by immunohistochemistry on tumor tissue microarray. Also, high expression of JAK1 correlated with favourable overall survival (p=0.04) and high expression of IL8, derived presumably from infiltrating immune cells, resulted in poor overall survival in Ewing sarcoma (p=0.04). Conclusions: Immune system related gene activation is observed in ESFT patient samples and several prognostically significant inflammatory genes (C5, JAK1 and IL8) for ESFT were identified. 44 Ewing sarcoma family of tumor patient and 11 cell line samples were analysed for their gene expression.
2011-12-01 | E-GEOD-17618 | biostudies-arrayexpress
Project description:Ewing sarcoma is an aggressive malignancy characterized by oncogenic rearrangements of the EWS gene with an ETS-family transcription factor, most commonly FLI. Recent comprehensive next-generation sequencing efforts have revealed few other highly recurrent mutations in this disease apart from loss-of-function mutations in STAG2 which occur in 15-20% of tumors. STAG2 is a member of the cohesin complex, which regulates sister chromatid alignment during mitosis and epigenetic regulation of gene expression. While some studies suggest that loss of STAG2 is associated with the development of aneuploidy, this is not the case in Ewing sarcoma. To investigate whether STAG2 loss effects epigenetic regulation of gene expression in Ewing sarcoma, we developed isogenic Ewing sarcoma cell lines with STAG2 knockout. We found that Ewing sarcoma cells engineered for loss of STAG2 maintain an intact cohesion complex that alternately incorporates STAG1.
2021-05-14 | GSE165783 | GEO