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SiRNA profiling of human breast cancer cell lines: control vs. Fn14 or luciferase siRNA Treated

ABSTRACT: We performed gene expression profiling on the MDA-MB-231 and MDA-MB-436 human breast cancer cell lines following siRNA-mediated inhibition of Fn14 expression as an approach to identify the mechanistic basis for Fn14 regulation of invasive capacity. Experiment Overall Design: Each cell lines was transfected with etiher an Fn14 or firefly luciferase-specific (GL2) siRNA, with untreated cells used as a reference. 2 biological replicates were performed for each array, independently grown, treated and harvested.

ORGANISM(S): Homo sapiens

SUBMITTER: Cunliffe Heather

PROVIDER: S-ECPF-GEOD-8871 | biostudies-other |

REPOSITORIES: biostudies-other

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Human Breast Cancer Cell Lines: Control vs. Fn14 or Luciferase siRNA Treated

2008-02-01 | GSE8871 | GEO

siRNA profiling of human breast cancer cell lines: control vs. Fn14 or luciferase siRNA Treated

Project description:We performed gene expression profiling on the MDA-MB-231 and MDA-MB-436 human breast cancer cell lines following siRNA-mediated inhibition of Fn14 expression as an approach to identify the mechanistic basis for Fn14 regulation of invasive capacity. Experiment Overall Design: Each cell lines was transfected with etiher an Fn14 or firefly luciferase-specific (GL2) siRNA, with untreated cells used as a reference. 2 biological replicates were performed for each array, independently grown, treated and harvested.

2008-06-16 | E-GEOD-8871 | biostudies-arrayexpress

Breast cancer cell lines - palmitate vs control

Project description:Palmitate or vehicle control-treated breast cancer cells

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Transcription profiling of medullary breast cancer vs ductal breast cancer cell lines

Project description:Gene expression analysis of meduallary breast cancer vs ductal breast cancer

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Transcription profiling by array of human breast cancer cell lines treated with HPGD targeting siRNA and shRNA

Project description:Effects of siRNA and shRNA treatment on gene expression in breast cancer cell lines

| S-ECPF-TABM-1162 | biostudies-other

Transcription profiling of human breast cancer MDA-MB-231 cells treated with PTHrP and control siRNA

Project description:Parathyroid hormone-related protein (PTHrP) is overexpressed in many cancer types. This secretory protein can induce hypercalcaemia of malignancy by mimicking the action of calcium-regulating parathyroid hormone (PTH). PTHrP may also be involved in the regulation of migration, invasion, proliferation and apoptosis. It can either stimulate signal cascades, such as the cAMP pathway, or act on not yet defined targets in the nucleus. In this study, we analyzed the effect of PTHrP-specific siRNA on gene expression in MDA-MB-231 breast cancer cells. MDA-MB-231 cells were either transfected with the PTHrP-specific siRNA (siPTHrP) or a control siRNA (siLuc). Differences in gene expression pattern in siPTHrP- vs. siLuc-treated cells were measured by microarray analysis. More than 200 differentially expressed genes were found. Some of these genes have important functions in carcinogenesis. Experiment Overall Design: Three independent transfection experiments were performed. Cells were transfected with siPTHrP or siLuc by electroporation, grown for three days and harvested for isolation of total RNA. RNAs were subjected to microarray analysis. The RNAs of experiment 1 are designated as siLuc 1 and siPTHrP 1, those of experiment 2 as siLuc 2 and siPTHrP 2 etc.. To identify siPTHrP-responsive genes, the siPTHrP- and siLuc-RNAs of the same experiment were compared.

| S-ECPF-GEOD-4292 | biostudies-other

MCF7 Cells: Control siRNA -E2 vs. Control siRNA +E2, Control siRNA -E2 vs. PES1 siRNA -E2,Control siRNA -E2 vs. PES1 siRNA +E2

Project description:The initiation of breast cancer is associated with increased expression of tumor-promoting estrogen receptor α (ERα) protein and decreased expression of tumor-suppressive ERβ protein. However, the mechanism underlying this process is unknown. Here we show that Pescadillo/PES1, an estrogen-inducible protein that is over-expressed in breast cancer, can regulate the balance between ERα and ERβ. PES1 enhances transcriptional activity of ERα and reduces that of ERβ, and modulates many estrogen-responsive genes. Consistent with this regulation of ERα and ERβ transcriptional activity, PES1 increases the stability of the ERα protein and decreases that of ERβ through the ubiquitin-proteasome pathway, mediated by the carboxyl terminus of Hsc70-interacting protein (CHIP). Moreover, PES1 can transform normal human mammary epithelial cells and is required for estrogen-induced breast tumor growth in nude mice. Further analysis of clinical samples showed that expression of PES1 correlates positively with ERα expression and negatively with ERβ expression, and predicts good clinical outcome in breast cancer. Our data demonstrate that PES1 contributes to breast tumor growth through regulating the balance between ERα and ERβ and may be a better target for the development of drugs that selectively regulate ERα and ERβ activities. Three samples: Control siRNA -E2 vs. Control siRNA +E2, Control siRNA -E2 vs. PES1 siRNA -E2,Control siRNA -E2 vs. PES1 siRNA +E2

| S-ECPF-GEOD-38621 | biostudies-other

Human breast cancer cells: control vs treated with breast cancer patients' sera

Project description:To investigate the significant differently expressed genes upon the stimulation of breast cancer patients' sera. Cells were untreated or treated with 10% breast cancer patients' sera for 24h followed by isolation of total RNA using TRIZOL. Gene-expression profiling was performed on the CapitalBio 35k human Genome Array microchips (Beijing, China).

| S-ECPF-GEOD-40108 | biostudies-other

Human breast cancer LM2 cell lines: control vs. MTDH knockdown

Project description:Transcriptional profiling of human breast cancer cell line LM2, a subline of MDA-MB-231 highly metastatic to lung when injected to nude mice, to identify the genes that are regulated after the metastasis gene metadherin is knocked down. Keywords: Genetic modification Empty pSuper vector control cells were compared to the cells transfected with the MTDH knockdown shRNA construct. Two cultured conditions were studied: the LM2 cancer cells were cultured alone or on top of a monolayer of human lung endothelial HMVEC-L cells. Three arrays for each sample.

| S-ECPF-GEOD-9187 | biostudies-other

Gene expression profiling of breast cancer cell lines treated with proton and electron radiations.

Project description:OBJECTIVE:Technological advances in radiation therapy are evolving with the use of hadrons, such as protons, indicated for tumors where conventional radiotherapy does not give significant advantages or for tumors located in sensitive regions, which need the maximum of dose-saving of the surrounding healthy tissues. The genomic response to conventional and non-conventional linear energy transfer exposure is a poor investigated topic and became an issue of radiobiological interest. The aim of this work was to analyze and compare molecular responses in term of gene expression profiles, induced by electron and proton irradiation in breast cancer cell lines. METHODS:We studied the gene expression profiling differences by cDNA microarray activated in response to electron and proton irradiation with different linear energy transfer values, among three breast cell lines (the tumorigenic MCF7 and MDA-MB-231 and the non-tumorigenic MCF10A), exposed to the same sublethal dose of 9 Gy. RESULTS:Gene expression profiling pathway analyses showed the activation of different signaling and molecular networks in a cell line and radiation type-dependent manner. MCF10A and MDA-MB-231 cell lines were found to induce factors and pathways involved in the immunological process control. CONCLUSION:Here, we describe in a detailed way the gene expression profiling and pathways activated after electron and proton irradiation in breast cancer cells. Summarizing, although specific pathways are activated in a radiation type-dependent manner, each cell line activates overall similar molecular networks in response to both these two types of ionizing radiation. Advances in knowledge: In the era of personalized medicine and breast cancer target-directed intervention, we trust that this study could drive radiation therapy towards personalized treatments, evaluating possible combined treatments, based on the molecular characterization.

| S-EPMC6223146 | biostudies-literature

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