Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Gene expression profile of wildtype glioblastoma cell lines and their resistant subclones

ABSTRACT: In order to identify factors involved in TMZ-resistance, we engineered different TMZ-resistant glioblastoma cell lines. Wildtype cells were treated twice a week in duplicate with a clinically relevant concentration of TMZ (33 ÂµM) for multiple weeks, until two individual resistant subclones were generated. Gene expression profiling was performed to identify differentially expressed genes in the resistant cells compared to their wildtype cells. three wildtype glioblastoma cell lines (U87, LNZ308, Hs683) and their resistant subclones, two of each wildtype, were analyzed The experiments were performed technically as dual channel but processed/normalized as single channel (i.e. two sample records per one raw data file). The raw data file for each sample is indicated in the sample description field but linked as Series supplementary file.

ORGANISM(S): Homo sapiens

SUBMITTER: Lotte Hiddingh

PROVIDER: E-GEOD-53014 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Gene expression profile of wildtype glioblastoma cell lines and their resistant subclones

Project description:In order to identify factors involved in TMZ-resistance, we engineered different TMZ-resistant glioblastoma cell lines. Wildtype cells were treated twice a week in duplicate with a clinically relevant concentration of TMZ (33 µM) for multiple weeks, until two individual resistant subclones were generated. Gene expression profiling was performed to identify differentially expressed genes in the resistant cells compared to their wildtype cells.

2014-01-01 | GSE53014 | GEO

Rational targeting of dynamic tumor subclones in relapsing human glioblastoma

Project description:Glioblastoma therapy relies on the alkylating drug temozolomide (TMZ) administered to irradiated patients post-neurosurgery, which increases overall survival but cannot prevent fatal disease relapse. Using clinical samples and glioblastoma models, we here identify TMZ-driven enrichment of ALDH1A1+ tumor subclones acquiring AKT-dependent drug resistance en route to relapse. We demonstrate that this recurrent phenotype switch is predictable and can be countered by a sequential rather than simultaneous combinatorial treatment approach.

2020-02-12 | GSE145128 | GEO

Bortezomib resistance in CCRF-CEM cell line [miRNA]

Project description:Bortezomib is a proteasome inhibitor used in severel different hematological malignancies. Resistance to this drug is still poorly understood. In order get more insight in the resistance mechanism, we developed several bortezomib resistant subclones of the CCRF-CEM T-ALL cell line. On these subclones comparative Genome hybridization (arrayCGH) for DNA copy number analysis gene expression and micro-RNA expression arrays were performed. We performed micro-RNA on two different bortezomib resistant subclones of the CCRF-CEM cell line. The resistant subclones were compared to the parental CCRF-CEM wildtype cell line.

2015-11-04 | E-GEOD-74632 | biostudies-arrayexpress

Bortezomib resistance in CCRF-CEM cell line [GEP]

Project description:Bortezomib is a proteasome inhibitor used in severel different hematological malignancies. Resistance to this drug is still poorly understood. In order get more insight in the resistance mechanism, we developed several bortezomib resistant subclones of the CCRF-CEM T-ALL cell line. On these subclones comparative Genome hybridization (arrayCGH) for DNA copy number analysis gene expression and micro-RNA expression arrays were performed. We performed gene expression microarray analysis on four different bortezomib resistant subclones of the CCRF-CEM cell line. The resistant subclones were compaired to treated and untreated the parental CCRF-CEM wildtype cell line.

2015-11-04 | E-GEOD-74634 | biostudies-arrayexpress

Bortezomib resistance in CCRF-CEM cell line [CGH]

Project description:Bortezomib is a proteasome inhibitor used in severel different hematological malignancies. Resistance to this drug is still poorly understood. In order get more insight in the resistance mechanism, we developed several bortezomib resistant subclones of the CCRF-CEM T-ALL cell line. On these subclones comparative Genome hybridization (arrayCGH) for DNA copy number analysis gene expression and micro-RNA expression arrays were performed. We performed comparative Genome hybridization (arrayCGH) for DNA copy number analysis on four different bortezomib resistant subclones of the CCRF-CEM cell line. The resistant subclones were compared to the parental CCRF-CEM wildtype cell line and reference DNA.

2015-11-04 | E-GEOD-74633 | biostudies-arrayexpress

Homo sapiens

Project description:Gene expression profile of wildtype glioblastoma cell lines and their resistant subclones

| PRJNA230678 | ENA

Plasma Mouse LC-MSMS - Bortezomib administered prior to temozolomide depletes MGMT, chemosensitizes glioblastoma with unmethylated MGMT promoter and prolongs animal survival

Project description:Patients diagnosed with glioblastoma (GBM) with sustained synthesis of the DNA repair enzyme, O6-methyl guanine DNA methytransferase (MGMT), are rendered resistant to Temozolomide (TMZ) chemotherapy. Here, we hypothesized that pretreatment with the proteasome inhibitor Bortezomib (BTZ, Velcade) might sensitize these GBM to TMZ by depleting MGMT.

2019-08-20 | PXD007193 | Pride

Single cell derived clonal analysis of human glioblastoma links functional and genomic heterogeneity

Project description:Single cell derived clones were extracted from four glioblastoma tumors using fluorescence activated cell sorting with CD15 and CD133 markers. Unsorted bulk tumors were also derived. Gene expression analysis of clones of tumor GBM-482 involved comparison between TMZ resistant (n=5) and sensitive (n=2) clones.

2015-01-03 | E-MTAB-2693 | biostudies-arrayexpress

Project description:cell culture:The human glioma cell line U87MG was obtained from the Cell Resource Center, Peking Union Medical College (Beijing, China), and U251MG was acquired from the American Type Culture Collection (Manassas, VA). Temozolomide (TMZ) resistant U87MG cells (U87TR) and TMZ resistant U251MG cells (U251TR) of glioblastoma (GBM) sub-cell lines, were established through repetitive exposure to increasing TMZ concentrations in vitro in our laboratory. Cells were cultured in DMEM culture medium supplemented with 10% FBS with a standard humidified incubator under 5% CO2 at 37°C.

2023-05-01 | GSE151680 | GEO

MiRNA expression data from TMZ-resistant GBM cell line

Project description:Glioblastoma multiforme(GBM) is the most common and lethal malignant primary brain tumor. Temozolomide (TMZ) is a promising chemo-therapeutic agent to treat GBM. However, resistance to TMZ develops quickly with a high frequency. The mechanisms underlying GBM cells’ resistance to TMZ are not fully understood. Non-coding RNAs are aberrantly expressed in many cancers and are highly involved in their pathogenesis including drug-resistence. In order to systematically study the role of miRNAs in GBM cells' resistence to TMZ , we built gene expression profiles of TMZ-resistant cell line and TMZ-sensitive cell line using miRNA gene expression microarrays.

2020-07-04 | GSE100775 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data