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Transcription profiling time series of finite life span and immortal non-malignant human mammary epithelial cell lines

ABSTRACT: We analyzed gene expression in 184 (finite life span) and HMT3522 S1 (immortal non-malignant) HMECs on successive days (3, 5, and 7) post-seeding in a laminin-rich extracellular matrix assay. Both HMECs underwent growth arrest in G0/G1 and differentiated into polarized acini between days 5 and 7.

ORGANISM(S): Homo sapiens

SUBMITTER: Katherine Martin

PROVIDER: E-MEXP-1006 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Gene expression signature in organized and growth-arrested mammary acini predicts good outcome in breast cancer.

Fournier Marcia V MV Martin Katherine J KJ Kenny Paraic A PA Xhaja Kris K Bosch Irene I Yaswen Paul P Bissell Mina J MJ

Cancer research 20060701 14

Nonmalignant human mammary epithelial cells (HMEC) seeded in laminin-rich extracellular matrix (lrECM) form polarized acini and, in doing so, transit from a disorganized proliferating state to an organized growth-arrested state. We hypothesized that the gene expression pattern of organized and growth-arrested HMECs would share similarities with breast tumors with good prognoses. Using Affymetrix HG-U133A microarrays, we analyzed the expression of 22,283 gene transcripts in 184 (finite life span) ...[more]

PMID: 16849555

Similar Datasets

Transcription profiling of human mammary epithelial cell lines with finite life span and immortal non-malignant cells - time series

Project description:Nonmalignant human mammary epithelial cells (HMEC) seeded in laminin-rich extracellular matrix (lrECM) form polarized acini and, in doing so, transit from a disorganized proliferating state to an organized growth-arrested state. We hypothesized that the gene expression pattern of organized and growth-arrested HMECs would share similarities with breast tumors with good prognoses. Using Affymetrix HG-U133A microarrays, we analyzed the expression of 22,283 gene transcripts in 184 (finite life span) and HMT3522 S1 (immortal nonmalignant) HMECs on successive days after seeding in a lrECM assay. Both HMECs underwent growth arrest in G0-G1 and differentiated into polarized acini between days 5 and 7. We identified gene expression changes with the same temporal pattern in both lines and examined the expression of these genes in a previously published panel of microarray data for 295 breast cancer samples. We show that genes that are significantly lower in the organized, growth-arrested HMEC than in their proliferating counterparts can be used to classify breast cancer patients into poor and good prognosis groups with high accuracy. This study represents a novel unsupervised approach to identifying breast cancer markers that may be of use clinically. Experiment Overall Design: We analyzed gene expression in 184 (finite life span) and HMT3522 S1 (immortal non-malignant) HMECs on successive days (3, 5, and 7) post-seeding in a laminin-rich extracellular matrix assay. Both HMECs underwent growth arrest in G0/G1 and differentiated into polarized acini between days 5 and 7.

2008-06-15 | E-GEOD-8096 | biostudies-arrayexpress

Identification of genes responsive to change in apical polarity in the breast epithelium

Project description:Differentiation of monolayered epithelia is characterized by the formation of a basoapical polarity axis, except during the early stages of cancer development. Using mammary glandular structures (acini) produced in a three-dimensional cell culture system we have demonstrated that, in order for mammary epithelial cells to exit quiescence and enter the cell cycle, acini have to lose apical polarity. In order to identify the genes dependent on apical polarity that could control cell quiescence, and possibly other aspects of tissue homeostasis, we have used Affymetrix technology microarray analysis of the 22,277 features/genes of the Human Genome U133A 2.0 array Chip in apically polarized and non-polarized breast epithelial acinar cells in three-dimensional culture. Genes commonly down-regulated in two treatments that altered apical polarity compared to control were considered to be dependent on apical polarity status for their transcription. Apically polarized (Control) and two different populations of non-polarized human mammary epithelial cells (18-alpha-glycyrrhetinic acid =AGA, and 5-aza-2'-deoxycytidine =Aza) were used for microarray analysis containing four biological replicates (1-4) for each treatment. The two treatments that cause loss of apical polarity were compared to reference apically polarized control samples using two different statistical analysis methods (FDR and HolmM-bM-^@M-^Ys).

2012-02-29 | E-GEOD-35165 | biostudies-arrayexpress

Human enteroendcrine cell responses to infection with Chlamydia trachomatis

Project description:The aim of this study was to perform a microarray analysis of the response pattern of EEC from both large and small bowel to infection in vitro, using Chlamydia trachomatis infection as a model. Two human EEC lines: LCC-18, derived from a neuroendocrine colonic tumour, and CNDT-2, derived from a small intestinal carcinoid, were infected with C. trachomatis serovar LGV II strain 434 (ATCC VR-902B). Penicillin G was used to induce persistent infection. Gene expression levels in infected and persistently infected EEC cells were investigated by microarray analysis

2014-06-03 | E-GEOD-58151 | biostudies-arrayexpress

Transcription profiling of 25 breast cancer cell lines grown in 2D and 3D tissue culture conditions

Project description:A comparison of gene expression profiles for 25 breast cancer cell lines grown in 2D and 3D tissue culture conditions

2007-05-02 | E-TABM-244 | biostudies-arrayexpress

Lineage reprogramming of adult mouse liver cells and B-lymphocytes to neural stem-like cells using defined factors [expression array]

Project description:The overexpression of transcription factors Oct4, Sox2, Klf4, and c-Myc reprograms a somatic nucleus to one that is transcriptionally and epigenetically indistinguishable from an embryonic stem (ES) cell. However, it is still unclear if transcription factors can completely convert the nucleus of a differentiated cell into that of a distantly related cell type such that it maintains complete transcriptional and epigenetic reprogramming in the absence of exogenous factor expression. To test this idea, we screened a library of doxycycline-inducible vectors encoding neural stem cell (NSC)-expressed genes and found that stable, self-maintaining NSC-like cells could be induced under defined growth conditions after transduction of transcription factors. These induced NSCs (iNSCs) were characterized in the absence of exogenous factor induction and were shown to be transcriptionally, epigenetically, and functionally similar to endogenous embryonic cortical NSCs. Importantly, iNSCs could be generated from multiple adult cell types including liver cells and B-cells with genetic rearrangements. Our results show that self-maintaining proliferative neural cells can be induced from non-ectodermal cells by expressing specific combinations of transcription factors. Expression analysis was performed on mouse embryonic fibroblasts (MEFs), primary-derived neural stem cells (NSCs) and induced neural stem cells (iNSCs).

2014-09-16 | E-GEOD-61433 | biostudies-arrayexpress

Timecourse total transcriptome sequencing of MCF10A cells undergoing acinus formation.

Project description:RNA-seq was performed for transcriptional analysis of MCF10A cells, an epithelial mammary cell line. MCF10A cells were cultured in 3D acinus forming conditions (in Matrigel). Timepoints analysed were 24h, 34h, 36h, 38h and 48h into acinus formation. Control cells were monoloayer.

2014-10-02 | E-MTAB-2969 | biostudies-arrayexpress

The Dynamic Proteome of Oligodendrocyte Lineage Differentiation Features Planar Cell Polarity and Macroautophagy Pathways

Project description:Generation of oligodendrocytes (OLs) is a sophisticated multistep process, mechanistic underpinnings of which are not fully understood and demand further investigation. To systematically profile proteome dynamics during human embryonic stem cell (hESC) differentiation into OLs, we applied in-depth quantitative proteomics at different developmental stages and monitored changes in protein abundance using a multiplexed tandem mass tag (TMT) based proteomics approach. Findings: Our proteome data provided a comprehensive protein expression profile that highlighted specific expression clusters based on the protein abundances over the course of human OL lineage differentiation. The proteome profile of OL lineage cells revealed 378 proteins that were specifically up-regulated only in one differentiation stage. In addition, comparative pairwise analysis of differentiation stages demonstrated that abundances of 352 proteins differentially changed between consecutive differentiation time points. Our results highlighted the eminence of the planar cell polarity (PCP) signaling and autophagy (particularly macroautophagy) in the progression of OL lineage differentiation

2020-09-16 | PXD017649 | Pride

Effect of prolactin and actinomycin D on gene expression in murine AML12 and Hepa 1-6 hepatocytes

Project description:Transcriptional profiling of murine hepatocyte gene expression following exposure to prolactin or actinomycin D Prolactin or actinomycin D-treated versus serum-free control cells: AML12 and Hepa 1-6. Biological replicates: 2 per cell line per treatment protocol.

2014-04-25 | E-GEOD-57072 | biostudies-arrayexpress

Extracellular vesicles isolated from human induced pluripotent stem cell-derived neurons contain a transcriptional network

Project description:Healthy brain function is mediated by several complementary signalling pathways, many of which are driven by extracellular vesicles (EVs). EVs are heterogeneous in both size and cargo and are constitutively released from cells into the extracellular milieu. They are subsequently trafficked to recipient cells, whereupon their entry can modify the cellular phenotype. Here, in order to further analyse the mRNA and protein cargo of neuronal EVs, we isolated EVs by size exclusion chromatography from human induced pluripotent stem cell (iPSC)-derived neurons. Electron microscopy and dynamic light scattering revealed that the isolated EVs had a diameter of 30-100 nm. Transcriptomic and proteomics analyses of the EVs and neurons identified key molecules enriched in the EVs involved in cell surface interaction (integrins and collagens), internalisation pathways (clathrin- and caveolin-dependent), downstream signalling pathways (phospholipases, integrin-linked kinase and MAPKs), and long-term impacts on cellular development and maintenance. Overall, we show that key signalling networks and mechanisms are enriched in EVs isolated from human iPSC-derived neurons.

2020-08-20 | E-MTAB-8254 | biostudies-arrayexpress

Gene expression profile of mouse Lewis lung carcinoma cell line cultivated in 2-dimensional or 3-dimensional cell culture enriched with laminin rich extracellular matrix proteins.

Project description:Obvious advantages of 3D cell culture model are the cell morphology better reflecting tissue cell morphology, the formation of zones of i) active proliferation, ii) quiescent viable cell zone and iii) necrotic zone, as well as formation of nutrition, oxygen and drug gradients better reflecting cellular environment in tissue. Nevertheless the 3D cultures are a model still not resembling full complexity of tumor tissue environment in vivo. Few obvious limitations of 3D cell cultures as cancer research model are the lack of vasculature, host immune response and other cell-cell interactions that occur between cancer and stromal cells in tumors. Recognized advantages and limitations of the 3D cell culture models, however do not suggest directly the areas of cancer biology where 3D models could be applied with highest success. Hence detailed analysis at the molecular level of 2D/3D cell cultures and tumors in vivo are needed to unlock the power of 3D cell culture model. In order to elucidate which biological pathways of cancer cells in tumors are best resembled by the 3D cell culture model we have analyzed whole genome gene expression changes in mouse LLC1 cell line when cultured in 2D or laminin rich ECM 3D system. RNA was isolated 48h after growing in two different cell culture systems.

2015-12-10 | E-GEOD-75863 | biostudies-arrayexpress

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