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Breast cancer MCF-7 Cells and MDA-MB-435 cells: pre-miR-125b Transfected cells vs. pre-control transfected cells

ABSTRACT: Transcriptional profiling of breast cancer cells comparing pre-control transfected cells with cells transfected with pre-miR-125b. We searched for miR-125b targets by systematic screening of mRNA profiling of pre-miR-125b transfected MCF-7 cells and MDA-MB-435 cells. Two-condition experiment, pre-miR-125b Transfected vs. pre-control Transfected MCF-7 cells. One replicate per array.

ORGANISM(S): Homo sapiens

SUBMITTER: Yan Li

PROVIDER: S-ECPF-GEOD-22546 | biostudies-other |

REPOSITORIES: biostudies-other

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Breast cancer MCF-7 Cells and MDA-MB-435 cells: pre-miR-125b Transfected cells vs. pre-control transfected cells

Project description:Transcriptional profiling of breast cancer cells comparing pre-control transfected cells with cells transfected with pre-miR-125b. We searched for miR-125b targets by systematic screening of mRNA profiling of pre-miR-125b transfected MCF-7 cells and MDA-MB-435 cells.

2010-06-25 | GSE22546 | GEO

Breast cancer MCF-7 Cells and MDA-MB-435 cells: pre-miR-125b Transfected cells vs. pre-control transfected cells

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Breast cancer MCF-7 cells and MDA-MB-231 cells: LNA-antimiR-21 transfected cells vs. LNA-control transfected cells

Project description:Transcriptional profiling of breast cancer cells comparing LNA-control transfected cells with cells transfected with LNA-antimiR-21.We searched for miR-21 targets by systematic screening of mRNA profiling of LNA-antimiR-21 transfected MCF-7 cells and MDA-MB-231 cells. Two-condition experiment, LNA-antimiR-21 Transfected vs. LNA-control Transfected MCF-7 cells. One replicate per array.

| S-ECPF-GEOD-20627 | biostudies-other

Transcription profiling of by comparing human breast cancer cell line MDA-MB-468 cyclin E transfected cells with control-transfected cells vs a control

Project description:We studied the effect of cyclin E overexpression in the breast cancer cell line MDA-MB-468, by comparing cyclin E transfected cells with control-transfected cells. The cyclin E/control hybridization was performed twice and cDNA from control transfected cells was used as a reference.

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MDA-MB-231 cells: shMUC4 transfected vs. Control SCR

Project description:Identification of MUC4-associated expression of genes by comparing MUC4 knockdown (MDA-MB-231-shMUC4) and control (MDA-MB-231-SCR).

2012-12-31 | GSE40157 | GEO

Breast cancer MCF-7 cells and MDA-MB-231 cells: LNA-antimiR-21 transfected cells vs. LNA-control transfected cells

2010-03-05 | GSE20627 | GEO

MDA-MB-231 cells: shMUC4 transfected vs. Control SCR

Project description:Identification of MUC4-associated expression of genes by comparing MUC4 knockdown (MDA-MB-231-shMUC4) and control (MDA-MB-231-SCR). Two-condition experiment, MUC4 knockdown cells vs. control. Biological replicates: 2 control, 2 sh-MUC4 transfected, independently grown and harvested. one replicate per array.

2012-12-31 | E-GEOD-40157 | biostudies-arrayexpress

Breast cancer MCF-7 cells and MDA-MB-231 cells: LNA-antimiR-21 transfected cells vs. LNA-control transfected cells

2010-05-06 | E-GEOD-20627 | biostudies-arrayexpress

Cell Fate following Irradiation of MDA-MB-231 and MCF-7 Breast Cancer Cells Pre-Exposed to the Tetrahydroisoquinoline Sulfamate Microtubule Disruptor STX3451.

Project description:A tetrahydroisoquinoline (THIQ) core is able to mimic the A and B rings of 2-methoxyestradiol (2ME2), an endogenous estrogen metabolite that demonstrates promising anticancer properties primarily by disrupting microtubule dynamic instability parameters, but has very poor pharmaceutical properties that can be improved by sulfamoylation. The non-steroidal THIQ-based microtubule disruptor 2-(3-bromo-4,5-dimethoxybenzyl)-7-methoxy-6-sulfamoyloxy-1,2,3,4-tetrahydroisoquinoline (STX3451), with enhanced pharmacokinetic and pharmacodynamic profiles, was explored for the first time in radiation biology. We investigated whether 24 h pre-treatment with STX3451 could pre-sensitize MCF-7 and MDA-MB-231 breast cancer cells to radiation. This regimen showed a clear increase in cytotoxicity compared to the individual modalities, results that were contiguous in spectrophotometric analysis, flow cytometric quantification of apoptosis induction, clonogenic studies and microscopy techniques. Drug pre-treatment increased radiation-induced DNA damage, with statistically more double-strand (ds) DNA breaks demonstrated. The latter could be due to the induction of a radiation-sensitive metaphase block or the increased levels of reactive oxygen species, both evident after compound exposure. STX3451 pre-exposure may also delay DNA repair mechanisms, as the DNA damage response element ataxia telangiectasia mutated (ATM) was depressed. These in vitro findings may translate into in vivo models, with the ultimate aim of reducing both radiation and drug doses for maximal clinical effect with minimal adverse effects.

| S-EPMC9228122 | biostudies-literature

Differential Epigenetic Effects of Atmospheric Cold Plasma on MCF-7 and MDA-MB-231 Breast Cancer Cells.

Project description:Cold atmospheric plasma (plasma) has emerged as a novel tool for a cancer treatment option, having been successfully applied to a few types of cancer cells, as well as tissues. However, to date, no studies have been performed to examine the effect of plasma on epigenetic alterations, including CpG methylation. In this study, the effects of plasma on DNA methylation changes in breast cancer cells were examined by treating cultured MCF-7 and MDA-MB-231 cells, representing estrogen-positive and estrogen-negative cancer cells, respectively, with plasma. A pyrosequencing analysis of Alu indicated that a specific CpG site was induced to be hypomethylated from 23.4 to 20.3% (p < 0.05) by plasma treatment in the estrogen-negative MDA-MB-231 cells only. A genome-wide methylation analysis identified "cellular movement, connective tissue development and function, tissue development" and "cell-to-cell signaling and interaction, cell death and survival, cellular development" as the top networks. Of the two cell types, the MDA-MB-231 cells underwent a higher rate of apoptosis and a decreased proliferation rate upon plasma treatment. Taken together, these results indicate that plasma induces epigenetic and cellular changes in a cell type-specific manner, suggesting that a careful screening of target cells and tissues is necessary for the potential application of plasma as a cancer treatment option.

| S-EPMC4456358 | biostudies-literature

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