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Unknown,Transcriptomics,Genomics,Proteomics

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Expression data in HTETOP cells following tetracycline or dexrazoxane treatment

ABSTRACT: HTETOP cells, derived from the human fibrosarcoma cell line HT1080, express human topoisomearse II α (TOP2A) exclusively from a tetracycline (TET)-regulated transgene, we used HTETOP cells to differentiate between TOP2A-dependent and –independent apoptotic effects of doxorubicin and dexrazoxane. We used microarrays to detect global transcriptional changes in HTETOP cells following tetracycline doxycycline or dexrazoxane treatment. Keywords: Drug treatment comparison HTETOP cells were treated with 1 µg/ml doxycycline to inhibit TOP2A expression or vehicle for 24 hours, doxycycline-induced trascriptional changes were identified by comparison of the two groups. HTETOP cells were treated with 100 µM dexrazoxane to inhibit TOP2A activity or vehicle for 24 hours, global trascriptional changes were identified by comparison of the two groups.

ORGANISM(S): Homo sapiens

SUBMITTER: Shiwei Deng

PROVIDER: E-GEOD-14886 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Topoisomerase II{alpha}-dependent and -independent apoptotic effects of dexrazoxane and doxorubicin.

Yan Tiandong T Deng Shiwei S Metzger Annegret A Gödtel-Armbrust Ute U Porter Andrew C G AC Wojnowski Leszek L

Molecular cancer therapeutics 20090505 5

Coadministration of the iron chelator dexrazoxane reduces by 80% the incidence of heart failure in cancer patients treated with anthracyclines. The clinical application of dexrazoxane is limited, however, because its ability to inhibit topoisomerase IIα (TOP2A) is feared to adversely affect anthracycline chemotherapy, which involves TOP2A-mediated generation of DNA double-strand breaks (DSB). Here, we investigated the apoptotic effects of dexrazoxane and the anthracycline doxorubicin, alone and ...[more]

PMID: 19417146

Similar Datasets

Expression data in HTETOP cells following tetracycline or dexrazoxane treatment

Project description:HTETOP cells, derived from the human fibrosarcoma cell line HT1080, express human topoisomearse II α (TOP2A) exclusively from a tetracycline (TET)-regulated transgene, we used HTETOP cells to differentiate between TOP2A-dependent and –independent apoptotic effects of doxorubicin and dexrazoxane. We used microarrays to detect global transcriptional changes in HTETOP cells following tetracycline doxycycline or dexrazoxane treatment. Keywords: Drug treatment comparison

2009-02-19 | GSE14886 | GEO

Doxycycline alters metabolism and proliferation of human cell lines

Project description:The tetracycline antibiotics are widely used in biomedical research as mediators of inducible gene expression systems. Despite many known effects of tetracyclines on mammalian cells -- including inhibition of the mitochondrial ribosome -- there have been few reports on potential off-target effects at concentrations commonly used in inducible systems. Here, we report that in human cell lines, commonly used concentrations of doxycycline change gene expression patterns and concomitantly shift metabolism towards a more glycolytic phenotype, evidenced by increased lactate secretion and reduced oxygen consumption. We also show that these concentrations are sufficient to slow proliferation and alter cell cycle progression in vitro. These findings suggest that researchers using doxycycline in inducible expression systems should design appropriate controls to account for potential confounding effects of the drug on cellular metabolism. Total RNA was extracted from MCF12A cells treated with either vehicle control or Dox at 1 ug/mL. The experiment was performed in biological triplicate. Microarray results were processed using the RMA method.

2013-04-22 | E-GEOD-45029 | biostudies-arrayexpress

mRNA profiling of AGS Gastric Cancer cell line upon treatment with 5µM of Doxycycline

Project description:Doxycycline, a tetracycline based antibiotic which has bacteriostatic activity against a broad range of both gram positive and gram negative bacteria was identified to inhibit the expression of ERK/MAPK signaling pathway in gastric cancer. ERK/MAPK pathway is one of the highly activated and a crucial player in gastric cancer progression. To delineate the complex transcription program associated with ERK/MAPK pathway and thus inhibited by doxycycline in gastric cancer cells, doxycycline was treated in AGS, one of the ERK/MAPK overexpressed gastric cancer cell line. The resulatant changes in genome-wide mRNA expression pattern between control and doxycycline treated was profiled using Human Transcriptome 2.0 arrays.

2021-01-06 | GSE124022 | GEO

IP of endogenous SUMO2/3 in HEK293 cells

Project description:Aim of the experiments was to identify endogenously SUMO2/3 modified proteins in HEK293 cells. Cells were treated with dexamethasone (dex) or vehicle (etoh) and with heatshock (+43C, HS) or normal growth temperature (+37C, non-HS). Cells were induced with tetracycline to express BirA*-GR (glucocorticoid receptor) to express GR at sufficient levels to assess effect of GR activation on protein SUMOylation.

2021-01-11 | PXD017714 | Pride

Doxycycline-responsive transcriptome in the mouse inner medullary collecting duct cell line (mIMCD3)

Project description:Purpose: The goal of this study is to identify doxycycle-responsive genes in mouse kidney inner medullary collecting duct cell line mIMCD3. To explore compreshensive profile of doxycycline-mediated gene expression, transcriptomes of doxycycline-responsive genes at two different time points (3 days and 6 days) were profiled and analyzed. Methods: Total RNAs were isolated from mIMCD3 cells treated with doxycycline or vehicle at different time points (3 days and 6 days). Four replicates for vehicle- or doxycycline-treated group were generated at each tested time point. cDNA libraries were prepared using a Nextera DNA library preparation protocol. The sequence reads from Illumina HiSeq3000 platform were qualified and quantified at the transcript level using Salmon (0.14.1). Differential expression analysis were performed using edgeR. Results: mRNA profiles of mouse kidney inner medullary collecting duct mIMCD3 cells treated with doxycycline or vehicle (DMSO) for 3 days and 6 days were generated using an optimized RNA-Seq workflow. Transcript level quantification using a pseudo-alignment quantification method (Salmon) was performed to calculate transcript abundance in each sample. Then differential expression analysis identified the differentially expressed genes at each time point comparison (DOX vs vehicle). Conclusions: This study revealed comprehensive transcriptomic changes of doxycycline-responsive gene expression in mouse kidney inner medullary collecting duct cells.

2021-11-17 | GSE171573 | GEO

Gene expression profiles of HCT116 colorectal carcinoma cells treated with HDAC inhibitors

Project description:Histone deacetylases (HDACs) regulate gene expression. Inhibition of class I HDACs has been shown to inhibit cancer cell growth. Largazole, a new potent HDAC inhibitor, shows strong antitumor activity, presumably by modulating transcription of cancer relevant genes. We used microarray analysis of human HCT116 colorectal carcinoma cell line to determine the gene expression profile after largazole treatment in comparison with other HDAC inhibitors (FK228 and SAHA). The goal was to identify regulated genes that can be linked to the antiproliferative effects of these HDAC inhibitors in HCT116 cells. To characterize the genes regulated by Largazole, SAHA and FK228, genome-wide gene expression analysis was carried out. Human HCT116 colorectal carcinoma cells (400,000) were seeded per well (6-well dish) and one day later treated with Largazole, SAHA, FK228 and vehicle control. 10 h later, total RNA was extracted and processed for hybridization to an Affymetrix Human Genome U133 2.0 GeneChip. Global alterations in transcript levels upon Largazole, SAHA and FK228 treatment were determined through comparison with data derived from cells treated with vehicle control. The experiment was carried out in duplicate.

2010-08-28 | E-GEOD-22061 | biostudies-arrayexpress

Expression data from knockdown of ZXDC1/2 in PMA-treated U937

Project description:ZXDC1 augments the expression of various markers of monocyte/macrophage differentiation when over-expressed in the U937 cell line treated with the phorbol ester PMA. Likewise, knockdown of ZXDC1 restricts the induced expression of these markers. We sought to identify specfic gene targets of ZXDC1 during the process of monocyte/macrophage differentiation in U937 by performing gene expression profiling in cells exhibiting reduced expression of ZXDC1 compared to controls. We used microarray to identify genes regulated by ZXDC during PMA-induced differentiation of U937 monoblasts towards a monocyte/macrophage phenotype An inducible shRNAmir (Tet-On) cell line was established in the U937 background that displayed significant, reproducible, and doxycycline inducible knockdown of ZXDC1. Using this cell line, we created four experimental groups to identify gene targets of ZXDC1 during PMA-induced differention towards a monocyte/macrophage phenotype: Vehicle alone; Vehicle+Doxycycline; PMA alone; PMA+Doxycycline. Each independent group was used for RNA extraction and hybridization on Affymetrix microarray chips.

2013-10-01 | E-GEOD-45417 | biostudies-arrayexpress

Che-1 is targeted by c-Myc to sustain proliferation in pre-B-cell acute lymphoblastic leukemia [RNA-seq]

Project description:This Series contain trascriptional profiling via RNA-seq for two ALL-B cell lines, one commercial (NALM-6), one patient-derived (LAL-B), in presence or absence of AATF transcript. In NALM-6, also MYC was depleted and sequenced in triplicate. Furthermore, the Burkitt's Lymphoma P493 cell line has been sequenced in presence or absence of Tetracycline (MYC On-Off) and in CN vs siAATF.

2018-01-23 | GSE93627 | GEO

EHMT1 and EHMT2 inhibition induce fetal hemoglobin expression [RNA-seq]

Project description:Using UNC0638 and genetic assays to inhibit EHMT1/2 and derepress fetal hemoglobin in adult hematopoietic cells. RNA-Seq in primary adult human erythroid cells treated with UNC0638 or the vehicle control (DMSO) in biological triplicates.

2015-11-02 | E-GEOD-71421 | biostudies-arrayexpress

Quantitative phosphoproteomics of chronic sunitinib treated renal cell carcinoma 786-O cells with GPR30 agonist G-1

Project description:In this project, we generated chronic sunitinib-treated 786-O cell, a renal cell carcinoma cell line. In order to investigate the possible effect of GPR30 agonist, G-1, on the growth-inhibtion related signaling pathways, we treated either parental both parental and chronic sunitinib-treated 786-O cells were treated either by vehicle-only (i.e. 0.1% DMSO) or 2 μM G-1 for 48 h. Therefore, there were three groups for comparison, including G-1 treatment (G-1 vs. parental), chronic sunitinib-treatment (SunR vs. parental), and G-1 treatment in SunR cells (SunR&G-1 vs. parental).

2021-04-28 | PXD021254 | Pride

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