Homo sapiens
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: E-GEOD-52942
PROVIDER: PRJNA230506 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:To examine the NRF2 activity in anaplastic glioma with mutated IDH1/2, we conducted the microarray analysis to measure the expression levels of representative NRF2 target genes, including NQO1, HMOX1, GCLM, TXNRD1, and PRDX1. 12 anaplastic gliomas with or without mutated IDH1/2.
2013-12-04 | E-GEOD-52942 | biostudies-arrayexpress
Project description:Comparison of gene expression profiles of anaplastic glioma with or without the mutated IDH1/2 gene
2025-01-24 | E-GEOD-52942 | ExpressionAtlas
Project description:The discovery of the oncometabolite 2-hydroxyglutarate in isocitrate dehydrogenase 1-mutated (IDH1-mutated) tumor entities affirmed the role of metabolism in cancer. However, large databases with tissue metabolites that are modulated by IDH1 mutation remain an area of development. Here, we present an unprecedented and valuable resource for tissue metabolites in diffuse glioma and their modulations by IDH1 mutation, histology, and tumor treatments in 101 tissue samples from 73 diffuse glioma patients (24 astrocytoma, 17 oligodendroglioma, 32 glioblastoma), investigated by NMR-based metabolomics and supported by RNA-Seq. We discovered comparison-specific metabolites and pathways modulated by IDH1 (IDH1 mutation status cohort) and tumor entity. The Longitudinal investigation cohort provides metabolic profiles of untreated and corresponding treated glioma samples at first progression. Most interestingly, univariate and multivariate cox regressions and Kaplan-Meier analyses revealed that tissue metabolites correlate with progression-free and overall survival. Thus, this study introduces potentially novel candidate prognostic and surrogate metabolite biomarkers for future prospective clinical studies, aiming at further refining patient stratification in diffuse glioma. Furthermore, our data will facilitate the generation of so-far-unanticipated hypotheses for experimental studies to advance our molecular understanding of glioma biology.
2022-09-07 | MTBLS3873 | MetaboLights
Project description:To examine the NRF2 activity in anaplastic glioma with mutated IDH1/2, we conducted the microarray analysis to measure the expression levels of representative NRF2 target genes, including NQO1, HMOX1, GCLM, TXNRD1, and PRDX1.
2013-12-04 | GSE52942 | GEO
Project description:The R132H mutation in the metabolic enzyme isocitrate dehydrogenase 1 (IDH1) is the most important prognostic factor for survival of glioma patients. This resulted in many studies investigating the effects of this mutation, including those on energy metabolism. This led to the discovery of a panel of enzymes mainly involved in glutamate anaplerosis and aerobic glycolysis that change in abundance as a result of the IDH1 mutation. To further study these changes and investigate the therapeutic value of inhibitors of IDH1 R132H-associated metabolic pathways, appropriate glioma models are required that mimic in vivo metabolism as good as possible. To investigate how metabolism is affected by in vitro cell culture, we here compared surgically obtained snap frozen glioma tissues with their corresponding primary glioma cell culture models with a previously developed targeted mass spectrometry proteomic assay. We determined the relative abundance of a panel of metabolic enzymes. Results confirmed increased glutamate use and decreased aerobic glycolysis in resected IDH1 R132H glioma tissue samples. However, these metabolic profiles were not reflected in the paired glioma culture samples. Analysis of orthotopic glioma xenograft samples with and without the IDH1 mutation revealed metabolic profiles that more closely resembled clinical counterparts. We suggest that culture conditions and tumor microenvironment play a crucial role in maintaining the in vivo metabolic situation in cell culture models. For this reason, new models that more closely resemble the in vivo microenvironment, such as 3-dimensional cell co-cultures or organotypic multicellular spheroid models, need to be developed and investigated.
2022-02-14 | PXD024009 | Pride
Project description:The R132H mutation in the metabolic enzyme isocitrate dehydrogenase 1 (IDH1) is the most important prognostic factor for survival of glioma patients. This resulted in many studies investigating the effects of this mutation, including those on energy metabolism. This led to the discovery of a panel of enzymes mainly involved in glutamate anaplerosis and aerobic glycolysis that change in abundance as a result of the IDH1 mutation. To further study these changes and investigate the therapeutic value of inhibitors of IDH1 R132H-associated metabolic pathways, appropriate glioma models are required that mimic in vivo metabolism as good as possible. To investigate how metabolism is affected by in vitro cell culture, we here compared surgically obtained snap frozen glioma tissues with their corresponding primary glioma cell culture models with a previously developed targeted mass spectrometry proteomic assay. We determined the relative abundance of a panel of metabolic enzymes. Results confirmed increased glutamate use and decreased aerobic glycolysis in resected IDH1 R132H glioma tissue samples. However, these metabolic profiles were not reflected in the paired glioma culture samples. Analysis of orthotopic glioma xenograft samples with and without the IDH1 mutation revealed metabolic profiles that more closely resembled clinical counterparts. We suggest that culture conditions and tumor microenvironment play a crucial role in maintaining the in vivo metabolic situation in cell culture models. For this reason, new models that more closely resemble the in vivo microenvironment, such as 3-dimensional cell co-cultures or organotypic multicellular spheroid models, need to be developed and investigated.
2022-02-16 | PXD024019 | Pride
Project description:Pilot study aimed at comparing miRNA profiles of human glioma cells with and without the R132H IDH1 mutation.
2016-04-30 | GSE80821 | GEO
Project description:Comparison of temporal gene expression profiles to identify genes/pathways changing during ageing. Jena Centre for Systems Biology of Ageing - JenAge (www.jenage.de)
2018-01-08 | GSE103232 | GEO
Project description:Gene expression analysis of IDH1 wild type and IDH1 R132H mutated U87 cells
| PRJNA393961 | ENA
Project description:B7H3 (also known as CD276) is a co-stimulator checkpoint protein of the cell surface B7 superfamily. Recently, the function beyond immune regulation of B7H3 has been widely studied. However, the expression preference and the regulation mechanism underlying B7H3 in different subtypes of gliomas is rarely understood. We show here that B7H3 expression is significantly decreased in IDH-mutated gliomas and in cultured IDH1-R132H glioma cells. Accumulation of 2-HG leads to a remarkable downregulation of B7H3 protein and the activity of IDH1-R132H mutant is responsible for B7H3 reduction in glioma cells. Inhibition of autophagy by inhibitors like leupeptin, chloroquine (CQ), and Bafilomycin A1 (Baf-A1) blocks the degradation of B7H3 in glioma cells. In the meantime, the autophagy flux is more active with higher LC3B-II and lower p62 in IDH1-R132H glioma cells than in IDH1-WT cells. Furthermore, sequence alignment analysis reveals potential LC3-interacting region (LIR) motifs 'F-V-S/N-I/V' in B7H3. Moreover, B7H3 interacts with p62 and CQ treatment significantly enhances this interaction. Additionally, we find that <i>B7H3</i> is positively correlated with <i>VEGFA</i> and <i>MMP2</i> by bioinformatics analysis in gliomas. B7H3 and VEGFA are decreased in IDH-mutated gliomas and further reduced in 2-HG<sup>high</sup> gliomas compared to 2-HG<sup>low</sup> glioma sections by IHC staining. Our study demonstrates that B7H3 is preferentially overexpressed in IDH wild-type gliomas and could serve as a potential theranostic target for the precise treatment of glioma patients with wild-type IDH.
2021-05-26 | MTBLS2692 | MetaboLights