Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA268840 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Intraoperative radiotherapy (IOERT) is a high radiation therapeutic technique which administers a single high dose of ionizing radiation (IR) immediately after surgical tumor removal in order to destroy the residual cancer cells in the site at high risk for recurrence. IR is able to regulate several genes and factors involved in cell-cycle progression, survival and/or cell death, DNA repair and inflammation modulating an intracellular response radiation dependent producing an imbalance in cell fate decision. In this study, we examined changes in gene expression in MCF7 breast cancer cell line exposed to 9Gy and 23Gy high single dose of IR delivered by IOERT. Changes in gene expression in MCF7 breast cancer cell line exposed to 9Gy and 23Gy high single dose of IR (named MCF7_9Gy and MCF7_23Gy respectively), were analyzed as two-color hybridizations using Agilent Technologies whole human genome 4x44K microarrays
2015-06-11 | E-GEOD-63667 | biostudies-arrayexpress
Project description:Breast tumors are characterized into different subtypes based on their surface marker expression, which affects their prognosis and treatment. For example, triple negative breast cancer cells (ER-/PR-/Her2-) show reduced susceptibility towards radiotherapy and chemotherapeutic agents. Poly (ADP-ribose) polymerase (PARP) inhibitors have shown promising results in clinical trials, both as single agents and in combination with other chemotherapeutics, in several subtypes of breast cancer patients. PARP1 is involved in DNA repair, apoptosis, and transcriptional regulation and an understanding of the effects of PARP inhibitors, specifically on metabolism, is currently lacking. Here, we have used NMR-based metabolomics to probe the cell line-specific effects of PARP inhibitor and radiation on metabolism in three distinct breast cancer cell lines. Our data reveal several cell line independent metabolic changes upon PARP inhibition, including an increase in taurine. Pathway enrichment and topology analysis identified that nitrogen metabolism, glycine, serine and threonine metabolism, aminoacyl-tRNA biosynthesis and taurine and hypotaurine metabolism were enriched after PARP inhibition in the three breast cancer cell lines. We observed that the majority of metabolic changes due to radiation as well as PARP inhibition were cell line dependent, highlighting the need to understand how these treatments affect cancer cell response via changes in metabolism. Finally, we observed that both PARP inhibition and radiation induced a similar metabolic response in the HCC1937 (BRCA mutant cell line), but not in MCF-7 and MDAMB231 cells, suggesting that radiation and PARP inhibition share similar interactions with metabolic pathways in BRCA mutant cells. Our study emphasizes the importance of differences in metabolic responses to cancer treatments in different subtypes of cancers.
2016-11-07 | MTBLS337 | MetaboLights
Project description:Intraoperative radiotherapy (IOERT) is a high radiation therapeutic technique which administers a single high dose of ionizing radiation (IR) immediately after surgical tumor removal in order to destroy the residual cancer cells in the site at high risk for recurrence. IR is able to regulate several genes and factors involved in cell-cycle progression, survival and/or cell death, DNA repair and inflammation modulating an intracellular response radiation dependent producing an imbalance in cell fate decision. In this study, we examined changes in gene expression in MCF7 breast cancer cell line exposed to 9Gy and 23Gy high single dose of IR delivered by IOERT.
2015-06-11 | GSE63667 | GEO
Project description:Desmocollin-1 (DSC1) is a desmosomal transmembrane glycoprotein that maintains cell-to-cell adhesion. DSC1 was previously associated with lymph node metastasis of luminal A breast tumors and was found to increase metastatic potential of MCF7 cells in vitro. To delineate DSC1 role in breast cancer metastasis and evaluate possibilities of DSC1 modulation, we investigated the effect of DSC1 overexpression on morphology, cell survival, transcriptome, proteome and interactome of MCF7 cells, a luminal A breast cancer model, stably transduced with lentiviral vector carrying DSC1 gene (MCF7-DSC1-GFP). We moreover identified inhibitor parthenolide to decrease DSC1 protein levels and to modulate the molecular mechanisms associated with DSC1 in MCF7 cells. This PRIDE project includes quantitative analysis results for the total proteome LC-DIA-MS/MS experiment evaluating DSC1 overexpression and parthenolide treatment in MCF7 breast cancer cell line, and results of pulldown analysis of DSC1-interacting proteins in MCF7 cells with and without parthenolide treatment.
2023-10-24 | PXD041029 | Pride
Project description:Intraoperative Electron Radiation Therapy (IOERT) is a therapeutic technique that delivers a single high dose of ionizing radiation (IR) directly to the tumor bed during cancer surgery. The main goal of IOERT is to counteract tumor growth by acting on residual cancer cells in the site at high risk for recurrence as well as to preserve healthy surrounding tissue from the side effects of radiation therapy. The high IR dose used during IOERT treatment induces a strong stress response resulting in the activation of pro- and anti-proliferative cell signaling pathways in both tumor and normal cells. The radiobiology of healthy tissue response to IR is a topic of interest which may contribute to avoid the impairment of normal tissue/organ function and to decrease the risks of secondary cancers. In this study, we examined changes in gene expression in MCF10A breast epithelial cell line exposed to 9Gy and 23Gy high single dose of IR delivered by IOERT. Changes in gene expression in MCF10A breast epithelial cell line exposed to 9Gy and 23Gy high single dose of IR (named MCF10A_9Gy and MCF10A_23Gy respectively), were analyzed as two-color hybridizations using Agilent Technologies whole human genome 4x44K microarrays
2015-07-06 | E-GEOD-65954 | biostudies-arrayexpress
Project description:From the parental breast cancer cell line MCF7 (weakly invasive), we progressively selected hyperinvasive subclones. We compared the gene expression between the parental MCF7-I0 and the hyper-invasive cells MCF7-I6. We used Affymetrix U133 Plus 2 microarrays to detail the global programme of gene expression underlying weakly and highly invasive breast cancer cells derived from the human breast cancer cell line MCF7.
2011-12-10 | GSE17889 | GEO
Project description:A time-course RNA-seq experiment testing the effect of drug treatment using selective CDK9 inhibitor AZD4573. The experiment was done using a resistant cell-line to AZD4573: the MCF7 breast cancer cell-line.
2019-11-08 | GSE129012 | GEO
Project description:Radiotherapy is a potent component of the standard of care for breast cancer. However, surviving radioresistant cells can repopulate following treatment and provoke relapse. Better understanding of the molecular mechanisms of radiation resistance may help improve treatment of radioresistant tumours. To emulate radiation therapy at the cellular level, we exposed MCF7 breast cancer cells to daily radiation doses of 2 Gy up to an accumulated dose of 20 Gy. Fractionally irradiated cells (FIR20) displayed increased clonogenic survival and population doubling time as compared to age-matched sham-irradiated cells and untreated, parental MCF7 cells. RNA-sequencing revealed a core signature of 229 mRNAs and 7 circRNAs significantly altered in the FIR20 cells. The FIR20 cell transcriptome overlapped significantly with canonical radiation signatures, and demonstrated a remarkable commonality with radiation and endocrine therapy resistance expression profiles, suggesting crosstalk between both acquired resistance pathways. Using predictive analyses and functional enrichment, we identified a gene-regulatory network of circRNA and mRNA that promotes stemness and inflammatory signaling in FIR20 cells. We propose that these phenotypic traits render breast cancer cells more radioresistant and may therefore serve as potential modules for combination therapies.
2022-10-12 | GSE189495 | GEO
Project description:mRNA breast cancer cell lines were profiled to study the function of hsa-mir-221 and hsa-mir-222. MCF7 cell lines were profiled after treatment with mir-221/222 mimics, and compared to profiles with transfection controls. Similarly, MDA-MB-231 cell lines were profiled after treatment with mir-221/222 inhibitors, and compared to profiles with transfection controls. Since ESR1 is a predicted target of mir-221/222 we also profiled MCF7 cell lines after disrupting ESR1 with an siRNA. Other breast cancer cell lines are provided because all cell lines were normalized together. Keywords: breast cancer, cell line, hsa-mir-221, hsa-mir-222, ESR1
2008-12-01 | GSE10890 | GEO