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.
Project description:Expression profiling of 29 untreated breast cancer cell lines using Agilent 4x44K V1 (G4112F) dual color oligonucleotide microarrays The primary study objective was to establish a research resource for comparative transcriptomic analysis of a series of commercially available breast cancer cell lines representative of diverse histopathologic and molecular subtypes, generated on the Agilent oligonucleotide platform. A specific study objective was to perform a comparative transcriptional analysis of three cell lines established from a patient with triple negative metaplastic inflammatory breast cancer developed by Drs. Felding Habermann and Smider at the Scripps Research Institute, San Diego, CA. Cancer Res 2011;71(24 Suppl):Abstract nr PD03-07. Commercial cell lines were cultured in replete media using manufacturer-recommended conditions and harvested during exponential growth phase using TRIzol Reagent. Total RNA was prepared from each cell line and a pooled reference was generated containing an equimolar concentration of RNA from all cell lines. Individual cell lines were differentially labeled relative to the reference pool and hybridized to Agilent Commercial V1 4x44K oligonucleotide microarrays.
Project description:Bone morphogenetic proteins (BMPs) are members of the TGF-β superfamily of growth factors. They are known for their roles in regulation of osteogenesis and developmental processes and, in recent years, evidence has accumulated of their crucial functions in tumor biology. BMP4, in particular, has been implicated in breast cancer. However, little is known about BMP target genes in the context of tumor. We therefore explored the effects of BMP4 treatment on global gene transcription in five breast cancer cell lines during a 6-point time series. Data analysis included hierarchical clustering of differentially expressed genes, gene ontology enrichment analyses and model based clustering of temporal data. BMP4 had a strong effect on gene expression. The cellular functions most strongly affected were regulation of transcription and development. The observed transcriptional response, as well as its functional outcome, followed a temporal sequence, with regulation of gene expression and signal transduction leading to changes in metabolism and cell proliferation. Hierarchical clustering revealed distinct differences in the response of individual cell lines to BMP4, but also highlighted a synexpression group of genes. Finally, this study provides a list of potential novel BMP target genes relevant in breast cancer. Two-condition experiment, vehicle-treated vs. BMP4-treated. Five cell lines were tested at six time points each, what makes a total of 30 samples. RNA samples from three biological replicates were pooled before hybridization.
Project description:Bone morphogenetic proteins (BMPs) are members of the TGF-β superfamily of growth factors. They are known for their roles in regulation of osteogenesis and developmental processes and, in recent years, evidence has accumulated of their crucial functions in tumor biology. BMP7, in particular, has been implicated in breast cancer. However, little is known about BMP target genes in the context of tumor. We therefore explored the effects of BMP7 treatment on global gene transcription in five breast cancer cell lines during a 6-point time series. Data analysis included hierarchical clustering of differentially expressed genes, gene ontology enrichment analyses and model based clustering of temporal data. BMP7 had a strong effect on gene expression. The cellular functions most strongly affected were regulation of transcription and development. The observed transcriptional response followed a temporal sequence. Hierarchical clustering revealed distinct differences in the response of individual cell lines to BMP7, but also highlighted a synexpression group of genes. Finally, this study provides a list of potential novel BMP target genes relevant in breast cancer. Two-condition experiment, vehicle-treated vs. BMP7-treated. Five cell lines were tested at six time points each, what makes a total of 30 samples. RNA samples from three biological replicates were pooled before hybridization.
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.
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
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.
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).