Project description:We measured baseline gene expression profiles for a set of breast tumors. gray-00248 Assay Type: Gene Expression Provider: Affymetrix Array Designs: U133AAofAv2 Organism: Homo sapiens (ncbitax) Tissue Sites: mammary gland Material Types: synthetic_RNA, total_RNA Disease States: breast cancer
Project description:Three-Dimensional Organotypic Cultures Reshape the microRNAs Transcriptional Program in Breast Cancer Cells Three-dimensional (3D) cell cultures have several advantages over conventional monolayer two-dimensional (2D) cultures as they can better mimic tumor biology. This study delineated the changes in microRNA (miRNA) expression patterns of breast cancer cells cultured in 3D and 2D conditions. 3D organotypic cultures showed morphological changes such as cell–cell and cell–extracellular matrix interactions associated with a loss of polarity and reorganization on bulk structures in both basal Hs578T and luminal T47D breast cancer cells. Data indicate that down-regulated miRNAs in Hs578T 3D cultures, relative to the 2D condition, contribute to a positive regulation of biological processes such as response to hypoxia and focal adhesion, whereas over-expressed miRNAs were related to negative regulation of the cell cycle. Remarkably, the repro-gramming of miRNAs’ transcriptional profiles was accompanied by changes in the expression of key miRNA/mRNA coregulation networks, such as miR-935/HIF-1A, which correlated with the expression found in clinical breast tumors and predicted poor patient outcomes. These data have implications in our understanding of cancer biology and impact the miRNA/mRNA regulatory axes of cells grown in 3D cultures. Our data represent a guide for novel miRNA candidates for functional analysis, including the response to therapy and biomarker discovery in breast cancer.
Project description:MiRNA profiling from whole blood (EDTA) was used to identify a miRNA profile applicable for early stage breast cancer detection In the study presented here, a consecutively collected, well-defined cohort of 48 patients with early stage breast cancer (invasive ductal carcinoma) at diagnosis was compared with a cohort of 57 healthy individuals for known homo sapiens miRNAs (mirbase 15).
Project description:Recent studies suggest that thousands of genes may contribute to breast cancer pathophysiologies when deregulated by genomic or epigenomic events. Here, we describe a model system to appraise the functional contributions of these genes to breast cancer subsets. In general, the recurrent genomic and transcriptional characteristics of 51 breast cancer cell lines mirror those of 145 primary breast tumors, although some significant differences are documented. The cell lines that comprise the system also exhibit the substantial genomic, transcriptional, and biological heterogeneity found in primary tumors. We show, using Trastuzumab (Herceptin) monotherapy as an example, that the system can be used to identify molecular features that predict or indicate response to targeted therapies or other physiological perturbations. **NOTE: Migrated from caArray 1.x, identifier='gov.nih.nci.ncicb.caarray:Experiment:1015897590151581:1' gray-00215 Assay Type: Gene Expression Provider: Affymetrix Array Designs: HG-U133A Organism: Homo sapiens (ncbitax)
Project description:RNA expression data was generated as part of a colon cancer study. Samples were obtained from patients, including primary colon cancer, polyps, metastases, and matched normal mucosa (obtained from the margins of the resection). The RNA was extracted from tissue samples obtained from resections and hybridized to Affymetrix HG-U133 arrays. RNA expression data was also obtained for a few cell lines. notte-00422 Assay Type: Gene Expression Provider: Affymetrix Array Designs: HG-U133A Organism: Homo sapiens (ncbitax) Material Types: cell, total_RNA, synthetic_RNA, organism_part, whole_organism Disease States: colon cancer, colon polyp, Colon Carcinoma, colon adenocarcinoma, breast cancer, Normal, Prostate Adenocarcinoma
Project description:Homo sapiens fresh whole blood was infected with Candida parapsilosis. RNA-pool of both species extracted at 0min (control), 15, 30, 60, 120, 240 min. Samples are rRNA depleted. Measurement of Homo sapiens gene expression.
Project description:Homo sapiens fresh whole blood was infected with Candida albicans SC5314. RNA-pool of both species extracted at 0min (control), 15, 30, 60, 120, 240 min. Samples are rRNA depleted. Expression measurement of Homo sapiens genes.
Project description:Clinical heterogeneity of esrtrogen receptor-negative, progesterone receptor-negative [ER(-)/PR(-)] breast cancer (BC) suggests biological heterogeneity. We performed gene expression analysis of primary BCs and BC cell lines to identify the underlying biology of ER(-)/PR(-) disease, define subsets, and identify potential therapeutic targets. geral-00143 Assay Type: Gene Expression Provider: Affymetrix Array Designs: HG-U133A Organism: Homo sapiens (ncbitax) Material Types: cRNA, cell, OrganismPart, whole_organism, total_RNA Disease States: breast carcinomas
Project description:Search for SNPs associated with the pharmacogenomic profile of Benzidazole adverse reactions in Chagas Disease Homo sapiens patients.