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E-GEOD-33827

ABSTRACT: Expression data from MDA-MB-231 parental and xenograft tumor cells treated with Smac mimetic SM-164.

OTHER RELATED OMICS DATASETS IN: PRJNA148199

PROVIDER: E-GEOD-33827 | ExpressionAtlas | 2015-08-18

REPOSITORIES: ExpressionAtlas

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Dataset's files

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			Action	DRS
	E-GEOD-33827-analysis-methods.tsv	Tabular
	E-GEOD-33827-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-33827-configuration.xml	Xml
	E-GEOD-33827-percentile-ranks.tsv	Tabular
	E-GEOD-33827.condensed-sdrf.tsv	Tabular

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Project description:Expression data from MDA-MB-231 parental and xenograft tumor cells treated with Smac mimetic SM-164.

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Simultaneous analysis of tumor and stromal gene expression profiles from xenograft models

Project description:Identifying the gene expression alterations that occur in both the tumor and stroma is essential to understanding tumor biology. We have developed a dual-species microarray analysis method that allows the dissection of both tumor and stromal gene expression profiles from xenograft models, based on limited interspecies cross-hybridization on Illumina gene expression beadchips. This methodology allows for simultaneous genome-wide analysis of gene expression profiles of both tumor cells and the associated stromal tissue. Data is provided regarding the crosshybridization of mouse liver RNA on human microarray, and MDA-MB-231 breast cancer cell line RNA on mouse microarray. Data is also provided for comparisons of MDA-MB-231 gene expression in vitro vs. in vivo, and mouse liver gene expression in control mice vs. stroma from MDA-MB-231 xenograft liver metastasis in tumor bearing mice A total of 18 samples were analyzed. Samples consist of 6 different types with each type in triplicate. Types are (1) MDA-MB-231 cell line grown in vitro and arrayed on mouse chips, (2) mouse liver from NOD/SCID mice arrayed on human chips, (3) MDA-MB-231 cell line grown in vitro arrayed on human chips, (4) MDA-MB-231 xenograft liver metastasis arrayed on human chips, (5) mouse liver from NOD/SCID mice arrayed on mouse chips, and (6) MDA-MB-231 xenograft liver metastasis arrayed on mouse chips. The overall design had three objectives: (1) to determine crosshybridizing probes based on sample types 1, 2, 3, and 5, (2) detect stromal and tumor expression using sample types 4 and 6, and (3) determine genes differentially expressed in tumor or metastasis compared to normal by comparing sample types 3 and 4 and comparing sample types 1 and 5.

2011-11-22 | E-GEOD-30993 | biostudies-arrayexpress

MDA-MB-231 Breast Cancer Bone Tropic vs Parental Hypoxic Secretome Analysis

Project description:The project profiled the expression patterns in hypoxia induced secretomes between MDA-MB-231 parental and MDA-MB-231 Bone Tropic (BT) breast cancer cell lines which have been previously generated by Massague and colleagues (Kang et al. Cancer Cell 2003).

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Metabolic and lipidomic characterization of radioresistant MDA-MB-231 human breast cancer cells to investigate potential therapeutic targets

Project description:To provide preliminary insights into metabolic and lipidomic characteristics in radioresistant triple-negative breast cancer (TNBC) cells and suggest potential therapeutic targets, we performed a comprehensive metabolic and lipidomic profiling of radioresistant MDA-MB-231 (MDA-MB-231/RR) TNBC cells and their parental cells using gas chromatography-mass spectrometry and nano electrospray ionization-mass spectrometry, followed by multivariate statistical analysis. Buthionine sulfoximine (BSO) and radiation were co-treated to radioresistant TNBC cells. The level of glutathione (GSH) was significantly increased, and the levels of GSH synthesis-related metabolites, such as cysteine, glycine, and glutamine were also increased in MDA-MB-231/RR cells. In contrast, the level of lactic acid was significantly reduced. In addition, reactive oxygen species (ROS) level was decreased in MDA-MB-231/RR cells. In the lipidomic profiles of MDA-MB-231/RR cells, the levels of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) were significantly increased, whereas those of most of the phosphatidylinositol species were significantly decreased. BSO sensitized MDA-MB-231/RR cells to radiotherapy, which resulted in decreased GSH level and increased ROS level and apoptosis. Radioresistant TNBC cells showed distinct metabolic and lipidomic characteristics compared to their parental cells. We suggested activated GSH, PC, and PE biosynthesis pathways as potential targets for treating radioresistant TNBC cells. Particularly, enhanced radiosensitivity was achieved by inhibition of GSH biosynthesis in MDA-MB-231/RR cells.

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Project description:Identification of genes that are involved in self-seeding by comparing gene expression profiles between parental MDA-MB-231 cells and seeder cells (MDA-231-S1a and S1b) 2 replicates from each sample (parental MDA-MB-231, MDA-MB-231 S1a and MDA-MB-231 S1b) were analyzed

2010-04-07 | E-GEOD-18833 | biostudies-arrayexpress

Cancer-cell-secreted miR-9-5p regulates cholesterol homeostasis to promote tumor metastasis [TF TB Rab27AKD miR-9KO]

Project description:To investigate the effects of breast cancer derived EVs on liver metabolism,we inoculated MDA-MB-231,231 /Rab27A KD and 231 /miR-9 KO cells into subcutaneous tumor in NSG mice. We then performed gene expression profiling analysis using data obtained from RNA-seq of liver from mice xenografted MDA-MB-231 cells (tumor bearing) or MDA-MB-231/Rab27A KD cells (231/Rab27A KD) or MDA-MB-231 /miR-9 KO (231/miR-9 KO) and tumor free mice.

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