Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Expression data from T47D/S2 (control) and T47D/TR-2 (tamoxifen-resistant) cell lines

ABSTRACT: Expression data from T47D/S2 (control) and T47D/TR-2 (tamoxifen-resistant) cell lines

PROVIDER: PRJNA914306 | ENA |

REPOSITORIES: ENA

ACCESS DATA

Json Xml

Similar Datasets

Expression data from T47D/S2 (control) and T47D/TR-2 (tamoxifen-resistant) cell lines

Project description:Basal expression profiling was performed to understand molecualr pathways specifically altered in tamoxifen-resistant cells. Tamoxifen is the most accepted targeted agent for treating patients with estrogen receptor (ER)-positive breast cancer (BC), but its efficacy has been limited due to drug resistance, manifested as disease recurrence and eventually death. Metabolic reprogramming of lipids has recently been recognized as a new mode of therapeutic resistance in various cancers. Therefore, we investigated previously unrecognized perturbations in lipid metabolism in tamoxifen-resistant BC by conducting comprehensive metabolomics and transcriptomics analysis.

2023-12-31 | GSE221439 | GEO

Expression data from Tamoxifen resistant Breast Cancer Cell lines

2010-12-31 | GSE22664 | GEO

Expression data from Tamoxifen resistant Breast Cancer Cell lines

Project description:Tamoxifen Resistant (TR) gene profile from Breast cancer cell lines T47D and ZR75-1 with their oestrogen-deprieved conterparts were analysed for gene associated with TR. We used Microarray Affymetrix HU133plus 2.0 chips for gene expression of TR cell lines, normalised them against GEO data available for normal T47D (GSM70667) and ZR75-1 (GSM70668). We grew parental breast cancer cell lines in tamoxifen containing media (0.1 microM) for 6 months and labelled them tamoxifen resistant (TR). Oestrogen-Deprieved cells were grown in charcoal-stripped media for 6 months then tamoxifen (0.1 microM) was added to the media and cells maintained a further 6 months and termed Oestrogen deprieved-tamoxifen resistant (ODTR) .

2010-12-31 | E-GEOD-22664 | biostudies-arrayexpress

Next Generation Sequencing Facilitates Quantitative Analysis of human breast cancer cell T47D and T47D-TR Transcriptomes

Project description:To gain new insight into the resistance to hormonal therapy in breast cancer, we generated a tamoxifen-resistant human breast cancer cell line T47D-TR by exposing estrogen-sensitive cell line T47D to increasing concentrations of 4-hydroxy tamoxifen (4-OHT) and identified its resistance with different ways. What we interested is the underlying mechanisms of breast cancer tamoxifen resistance which was not reported yet.Here, we detect the RNA sequence of both the two cell lines hoping to find some evidence.

2020-01-28 | GSE125738 | GEO

Differential expression levels of mRNAs in tamoxifen-sensitive T47D versus tamoxifen-resistant T47D (T47DR) human breast cancer cells

Project description:Tamoxifen is the most widely used antiestrogen in patients with estrogen receptor (ER) positive breast cancer . However, less than half of patients benefit from tamoxifen treatment and 30-50% acquire resistance and the disease progresses. Resistance to tamoxifen is a serious problem in breast cancer therapy and major efforts are underway to find out underlying mechanisms. To find out the differential expression levels of mRNAs in tamoxifen-sensitive T47D versus tamoxifen-resistant T47D (T47DR) human breast cancer cells, T47DR (tamoxifen-resistant) cell line was established from T47D cells after the following continuous exposure to 1 μmol/L 4-Hydroxytamoxifen (H7904, Sigma, USA) for more than 6 months.Thousands of significantly different mRNA expression levels were found and analysed. Our study provides a reference data for the study of tamoxifen resistance .

2020-06-01 | GSE129544 | GEO

Differential expression levels of mRNAs in tamoxifen-sensitive T47D versus tamoxifen-resistant T47D (T47DR) human breast cancer cells

Project description:Differential expression levels of mRNAs in tamoxifen-sensitive T47D versus tamoxifen-resistant T47D (T47DR) human breast cancer cells

| PRJNA531696 | ENA

Effect of tamoxifen on early gene expression in T47D cells

Project description:Tamoxifen is the treatment of choice in estrogen receptor alpha breast cancer patients. However, ~50% of ERα-positive tumors exhibit intrinsic or rapidly acquire resistance to endocrine treatment, requiring chemotherapy. Ιt has been difficult to predict de novo resistance to endocrine therapy and/or assess the likelihood of early relapse, while no concrete mechanism regulating the acquisition and the maintenance of endocrine resistance has been identified. We have performed a whole transcriptome analysis of an ER-positive (T47D) and a triple-negative (MDA-MBA-231) breast cancer cell line exposed to tamoxifen for a short time frame (hours) in order to study resistance mechanisms that are initiated early after initiation of tamoxifen treatment.

2014-08-29 | GSE60878 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis of human breast cancer cell T47D and T47D-TR Transcriptomes

Project description:Next Generation Sequencing Facilitates Quantitative Analysis of human breast cancer cell T47D and T47D-TR Transcriptomes

| PRJNA517424 | ENA

Effect of tamoxifen on early gene expression in T47D cells

Project description:Tamoxifen is the treatment of choice in estrogen receptor alpha breast cancer patients. However, ~50% of ERM-NM-1-positive tumors exhibit intrinsic or rapidly acquire resistance to endocrine treatment, requiring chemotherapy. M-NM-^Yt has been difficult to predict de novo resistance to endocrine therapy and/or assess the likelihood of early relapse, while no concrete mechanism regulating the acquisition and the maintenance of endocrine resistance has been identified. We have performed a whole transcriptome analysis of an ER-positive (T47D) and a triple-negative (MDA-MBA-231) breast cancer cell line exposed to tamoxifen for a short time frame (hours) in order to study resistance mechanisms that are initiated early after initiation of tamoxifen treatment. Cells after a 4h incubation with medium containing 10% charcoal stripped FBS were incubated with vehicle, E2 (10-6M) or tamoxifen (10-6M) in RPMI 1640 supplemented with 10% charcoal stripped FBS, for 3 hours. Total RNA was isolated using Nucleospin II columns (Macheray-Nagel, Dttren, Germany), according to the manufacturerM-bM-^@M-^Ys instructions. RNA was labeled and hybridized according to the Affymetrix protocol (Affymetrix Gene-Chip Expression Analysis Technical Manual), using the HGU133A plus 2 chip, analyzing a total of 54675 transcripts. Signals were detected by an Affymetrix microarray chip reader.

2014-08-29 | E-GEOD-60878 | biostudies-arrayexpress

Therapeutic modulation of nemo-like kinase in primary and acquired endocrine-resistant breast cancer

Project description:Purpose: To assess if NLK modulates ER target gene expression, we performed transcriptome sequencing following NLK inhibition or tamoxifen treatment in the BT483 or T47D-TamR cells under estrogen-deprived condition. Methods: BT483 and T47D-TamR cells were treated with NLK-specific siRNAs, or VX-702, or Tamoxifen under estrogen-deprived condition to examine the expression profile changes of ER target genes. NovaSeq 6000 S2 Reagent Kit (Illumina) was used for paired-end reads (2×150 bp) sequencing reactions. The expression changes of ER target genes following NLK inhibition are compared to their changes following tamoxifen treatment. Results: Our results show that the ER target gene expression changes following NLK silencing or VX-702 treatment correlate with their expression changes following tamoxifen treatment.

2021-01-11 | GSE141696 | 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