GEO DataSets

(Submitter supplied) Loss of the epithelial adhesion molecule E-cadherin is thought to enable metastasis by disrupting intercellular contacts - an early step in metastatic dissemination. To further investigate the molecular basis of this notion, we use two methods to inhibit E-cadherin function that distinguish between E-cadherin's cell-cell adhesion and intracellular signaling functions. While the disruption of cell-cell contacts alone does not enable metastasis, the loss of E-cadherin protein does, through induction of an epithelial-to-mesenchymal transition, invasiveness and anoikis-resistance. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL3921

12 Samples

Download data: CEL

(Submitter supplied) Microarrays were used to determine relative global gene expression changes upon introduction of EMT-inducing or control vectors.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL3921

21 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by array

Platforms:

GPL570 GPL1261

17 Samples

Download data: CEL, CHP

(Submitter supplied) The newly identified claudin-low subtype of cancer is believed to represent the most primitive breast malignancies, having arisen from transformation of an early epithelial precursor with inherent stemness properties and metaplastic features. Challenging this hypothesis, we show both in vitro and in vivo that transcription factors inducing epithelial-mesenchymal transition can drive the development of claudin-low tumors from differentiated mammary epithelial cells, by playing a dual role in cell transformation and dedifferentiation.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

5 Samples

Download data: CEL, CHP

(Submitter supplied) The newly identified claudin-low subtype of cancer is believed to represent the most primitive breast malignancies, having arisen from transformation of an early epithelial precursor with inherent stemness properties and metaplastic features. Challenging this hypothesis, we show both in vitro and in vivo that transcription factors inducing epithelial-mesenchymal transition can drive the development of claudin-low tumors from differentiated mammary epithelial cells, by playing a dual role in cell transformation and dedifferentiation.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

12 Samples

Download data: CEL, CHP

(Submitter supplied) We have identified the transcription factor forkhead box protein F2 (Foxf2) to be upregulated in its expression during the EMT process and studied its functional contribution to EMT by siRNA-mediated knockdown in NMuMG cells treated for 4 days with TGFbeta followed by mRNA-sequencing. Our analysis revealed a dual role of Foxf2 during TGFbeta-induced EMT in promoting apoptosis while inducing cell junction breakdown and migration.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

6 Samples

Download data: TXT

(Submitter supplied) Gene expression profiling to determine transcriptome changes following Snail or Slug expression in MCF-7 breast cancer cells Samples were isolated in three biological replicates for microarray analysis.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

30 Samples

Download data: CEL

(Submitter supplied) The epithelial-mesenchymal transition (EMT) is thought to be essential for cancer metastasis. While chromatin remodeling is involved in EMT, histone variants contribution in EMT remains poorly investigated. Recently, we showed that silencing or removal of the histone variant H2A.X induced mesenchymal-like characteristics, including activation of the EMT transcription factors, Slug and ZEB1, in human colon cancer cells. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

10 Samples

Download data: CEL

(Submitter supplied) Two engineered HMLE cell lines representing various degrees of EMT were treated with a drug in development to target and inhibit SNAIL interaction with PTP53, called GN-25 total RNA was isolated and analyzed in an Agilent two-color experiment. Four biological replicates of each condition were directly compared, GN25 treated compared to untreated reference

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL13497

8 Samples

Download data: TXT

(Submitter supplied) CD44+/CD24- subpopulation of normal and cancerous breast epithelial cells are suggested to have stem cell properties. The goal of this study was to identify gene expression differences between CD44+/CD24- and CD44-/CD24+ subpopulation of cells from a same cell lines. We selected MCF-10A cells, which are immortalized derived from a fibrocystic breast disease. These cells are immortalized but not transformed and express basal cell markers. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

8 Samples

Download data: CEL, CHP

(Submitter supplied) Epithelial-mesenchymal transition (EMT) has recently been recognized as a key element of cell invasion, migration, metastasis, and drug resistance in several types of cancer, including non-small cell lung cancer (NSCLC). Our aim was to clarify microRNA (miRNA) -related mechanisms underlying EMT followed by acquired resistance to epidermal growth factor receptor tyrosine-kinase inhibitor (EGFR-TKI) in NSCLC. more...

Organism:

Homo sapiens

Type:

Expression profiling by RT-PCR

Platform:

GPL17853

8 Samples

Download data: TXT

(Submitter supplied) We used microarrays to investigate the transcription profile of FOXC2 expression in a human mammary epithelial cell line.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

6 Samples

Download data: CEL

(Submitter supplied) The multi-step process of epithelial to mesenchymal transition (EMT), whereby static epithelial cells become migratory mesenchymal cells, is heavily involved in development, wound healing, and disease states. Despite the major involvement of basic helix-loop-helix (bHLH) transcription factors (TFs) in cell-fate determination, few have examined them for their involvement in fundamental processes that require EMT. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

6 Samples

Download data: TXT

(Submitter supplied) Introduction: A gene expression signature indicative of active wound responses is common to more than 90% of non-neoplastic tissues adjacent to breast cancer, but these tissues also show substantial heterogeneity, suggesting different microenvironmental subtypes. Genomic variation in the extratumoral microenvironment has received limited study. Methods: Gene expression analysis from 72 patient-derived samples adjacent to invasive breast cancer or ductal carcinoma in situ was evaluated. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

5 related Platforms

74 Samples

Download data

(Submitter supplied) We previously identified a gene signature predicted to regulate the epithelial-mesenchymal transition (EMT) in both epithelial tissue stem cells and breast cancer cells. A phenotypic RNA interference (RNAi) screen identified the genes within this 140-gene signature that promoted the conversion of mesenchymal epithelial cell adhesion molecule-negative (EpCAM-) breast cancer cells to an epithelial EpCAM+/high phenotype. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL7504

18 Samples

Download data

(Submitter supplied) The SNAI1 and SNAI2 embryonic genes are reactivated in numerous cancer types, including carcinomas. They promote cancer cell dissemination by inducing an epithelial-to-mesenchymal transition (EMT) and by protecting cells from anoikis. We now have demonstrated that the sequentially related SNAI3 gene is aberrantly reactivated in human breast carcinomas. To compare the functional properties of the three SNAIL family members, the transcription factors were ectopically expressed in immortalized mammary epithelial cells.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

20 Samples

Download data: TXT

(Submitter supplied) In this study, using a Patient Derived Xenograft (PDX) system established by transplanting primary tumors from pre-metastatic breast cancer patients we demonstrate that development of distant organ metastases correlates with the presence of Bone Marrow Disseminated Tumor Cells (BM DTCs) in the PDX mice. Comparative gene expression analysis of bone marrow (BM) from tumor bearing PDX mice which developed metastatic disease was carried out with BM from non-tumor bearing controls. more...

Organism:

Mus musculus; Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

11 Samples

Download data: CEL

(Submitter supplied) The claudin-low subtype is a recently identified rare molecular subtype of human breast cancer that expresses low levels of tight and adherens junction genes and shows high expression of epithelial-to-mesenchymal transition (EMT) genes. These tumors are enriched in gene expression signatures derived from human tumor initiating cells (TIC) and human mammary stem cells. Through cross-species analysis, we discovered mouse mammary tumors that have similar gene expression characteristics as human claudin-low tumors and were also enriched for the human TIC signature. more...

Organism:

Mus musculus

Type:

Expression profiling by array; Genome variation profiling by array; Genome variation profiling by genome tiling array

Platforms:

GPL4092 GPL4134 GPL10732

107 Samples

Download data

(Submitter supplied) Background: The biological mechanisms underlying cancer cell motility and invasiveness remain unclear, although it has been hypothesized that they involve some type of epithelial-mesenchymal transition (EMT). Methods: We used xenograft models of human cancer cells in immunocompromised mice, profiling the harvested tumors separately with species-specific probes and computationally analyzing the results. more...

Organism:

Mus musculus; Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL8321 GPL571

36 Samples

Download data: CEL

(Submitter supplied) Metastasis is a major obstacle to better prognosis in patients with hepatocellular carcinoma (HCC). Mesenchymal-epithelial transition (MET) is the driving force for metastatic colonization in which E-cadherin reexpression is a critical procedure. It has been reported that the loss of paired-related homeobox transcription factor 1 (PRRX1) is required for cancer cell metastasis in vivo. However, the role of PRRX1 in MET and how its downregulation triggers E-cadherin reexpression are unknown. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL15207

6 Samples

Download data: CEL