GEO DataSets

Analysis of weakly tumorigenic parental MCF-7 cells and a multistep doxorubicin-selected MCF-7/ADR subline. Results provide insight into whether prolonged continuous selection of cells for drug resistance enriches for cancer stem-like cells.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 2 cell line, 2 genotype/variation sets

Platform:

GPL571

Series:

GSE24460

4 Samples

Download data: CEL

(Submitter supplied) Background: Cancer stem cells are presumed to have virtually unlimited proliferative and self-renewal abilities and to be highly resistant to chemotherapy, a feature that is associated with overexpression of ATP-binding cassette transporters. We investigated whether prolonged continuous selection of cells for drug resistance enriches cultures for cancer stem-like cells. Methods: Cancer stem cells were defined as CD44+/CD24– cells that could self-renew (ie, generate cells with the tumorigenic CD44+/CD24– phenotype), differentiate, invade, and form tumors in vivo. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4084

Platform:

GPL571

4 Samples

Download data: CEL

(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) A microarray approach was used to measure and compare whole genome expression in non-sorted cell population and in subsets of cultured cells, including stem-like cancer cell and non-stem like cancer cell populations,

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

12 Samples

Download data: TXT

(Submitter supplied) The CD44hi compartment in human breast cancer is enriched in tumor-initiating cells, however the functional heterogeneity within this subpopulation remains poorly defined. From a human breast cancer cell line with a known bi-lineage phenotype we have isolated and cloned two CD44hi populations that exhibited mesenchymal/Basal B and luminal/Basal A features, respectively. Rather than CD44+/CD24-,Basal B (G4) cells, only CD44hi/CD24lo, epithelioid Basal A (A4) cells retained a tumor-initiating capacity in NOG mice, form mammospheres and exhibit resistance to standard chemotherapy. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

10 Samples

Download data: CEL

(Submitter supplied) Subpopulations of MDA-MB-231 that exhibit different metastatic tropisms when injected into immuno-deficient mice. Also, a cohort of primary breast cancers surgically resected at the Memorial Sloan-Kettering Cancer Center (MSKCC). Keywords = Breast cancer Keywords = lung metastasis Keywords: parallel sample

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

121 Samples

Download data: CEL, EXP

(Submitter supplied) EP300, a transcriptional co-activator of E-cadherin, has been recently found by our group to regulate doxorubicin resistance via by-pass of senescence and paclitaxel resistance by overcoming apoptosis in a minimally transformed mammary epithelial cells (MTMEC). Moreover, EP300 deleted MTMEC cells exhibit an multi-drug resistant (MDR) phenotype independent of P-glycoprotein (ABCB1), an efflux pump or ABC drug transporter. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

16 Samples

Download data: CEL

(Submitter supplied) Melanoma remains the most lethal skin cancer, mainly because of high resistance to therapy. Side population (SP) cells are found in many types of cancer and are usually enriched in therapy-resistant as well as tumorigenic cells. Here, we identified a Hoechst dye-effluxing SP in a large series of human melanoma samples representing different progression phases. The SP size did not change with disease stage but was correlated with the prognostic “Breslow’s depth” in the primary (cutaneous) tumors. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4133

8 Samples

Download data: TXT

(Submitter supplied) Osteosarcoma is the most common type of pediatric bone tumor. Despite great advances in chem-otherapy during the past decades the survival rates of osteosarcoma patients remains usatisfacto-ry. Drug resistance is one of the main reasons leading to treatment failure and poor progno-sis. Previous reports correlated expression of cluster of differentiation 44 (CD44) with drug re-sistance and poor survival of osteosarcoma patients, however the underlying mechanisms are poorly defined. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

6 Samples

Download data: CSV

(Submitter supplied) We have generated tumorigenic (S2N) and non-tumorigenic (S2), normal-like to basal-like breast cancer cell lines from primary tumors. At high in vivo inoculation cell numbers of 10^6 cells/mouse both S2N and S2 monolayer as well as sphere culture cells grew at similar rates. However, at low inoculation cell numbers down to 10^3 cells only S2N sphere cells generated xenograft tumors. mRNA profiling revealed a unique cluster pattern of the tumorigenic S2N sphere cells, but a detailed analysis of TIC relevant transcription factors like Oct3, Sox and Nanog family members, Myc, Slug or Twist1 revealed no consistently increased expression in the highly tumorigenic cell lines. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

12 Samples

Download data: CEL

(Submitter supplied) Background: Isolation and characterization of tumourigenic colon cancer initiating cells may help to develop novel diagnostic and therapeutic procedures. Methods: We characterized a panel of fourteen human colon carcinoma cell lines and their corresponding xenografts for the surface expression of different potential stem cell markers: CD133, CD24, CD44, CDCP1 and CXCR4. In five cell lines and nine xenografts mRNA expression of the investigated markers was determined. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

15 Samples

Download data: CEL

(Submitter supplied) Analysis of sorted SP/LC population and a CD138+ main population cells. Results provide insight into which gene is involed in the drug resistance and tumor growth enriches for cancer stem-like cells. Keywords: multiple myeloma, cancer stem cell

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

14 Samples

Download data: CEL

(Submitter supplied) Expression profiling of CD24+ and CD24- population cells from myeloma cell lines. Results provide insight into the role of CD24+ cells in myeloma development. Keywords: multiple myeloma, cancer stem cell, CD24

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

6 Samples

Download data: CEL

(Submitter supplied) We FACS sorted Ras-transformed human mammary epithelial cells (HMLER cells) into GD2+ and GD2- as well as CD44high/CD24low and CD44low/Cd24highcells and comapred the four different population by array.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

12 Samples

Download data: CEL, CSV

(Submitter supplied) To investigate potential links between Stat3 transcriptional activity and other signaling pathways in breast cancer, we determined the gene expression profiles of three breast cancer cell lines treated with JAK, PTGIS, PFKFB3, CXCR2, HAS1, or NQO1 inhibitor (all of which decreased Stat3 transcriptional activity in Hs 578T cells except for the NQO1 inhibitor), inhibitor treatment vehicle alone (DMSO), STAT3 siRNAs, or non-targeting siRNAs. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9052

27 Samples

Download data: TXT

(Submitter supplied) The transcription factor ZNF217 is a candidate oncogene in the amplicon on chromosome 20q13 that occurs in 20-30% of primary human breast cancers and that correlates with poor prognosis. We show Znf217 overexpression drives aberrant differentiation and signaling events, promotes increased self-renewal capacity, mesenchymal marker expression, motility and metastasis, and represses an adult tissue stem cell gene signature downregulated in cancers. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL11062

8 Samples

Download data: TXT

(Submitter supplied) Cancer stem cells (CSCs) drive tumour spread and therapeutic resistance, and can undergo epithelial-to-mesenchymal transition (EMT) and mesenchymal-to-epithelial transition (MET) to switch between epithelial and post-EMT sub-populations. Examining oral squamous cell carcinoma (OSCC), we now show that increased phenotypic plasticity, the ability to undergo EMT/MET, underlies increased CSC therapeutic resistance within both the epithelial and post-EMT sub-populations. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

12 Samples

Download data: TXT

(Submitter supplied) Cancer stem cells (CSCs) drive tumour spread and therapeutic resistance, and can undergo epithelial-to-mesenchymal transition (EMT) and mesenchymal-to-epithelial transition (MET) to switch between epithelial and post-EMT sub-populations. Examining oral squamous cell carcinoma (OSCC), we now show that increased phenotypic plasticity, the ability to undergo EMT/MET, underlies increased CSC therapeutic resistance within both the epithelial and post-EMT sub-populations. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

5 Samples

Download data: TXT

(Submitter supplied) To determine whether enhanced self-renewal and tumorigenicity in UT2 cells (derived from the second human–mouse xenotransplantation of U2OS cell-formed osteosarcoma tissues) correlate with increased expression of stem/progenitor cell-associated genes, we measured global gene expression in MSC, U2OS and UT2 cells by microarray analysis. Compared to U2OS and MSC, molecules involved in regulation of self-renewal signaling pathways of cancer stem cells were also up-regulated in UT2 cells, including those in the Notch, Wnt, and TGF-beta pathways. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

3 Samples

Download data: CEL

(Submitter supplied) In this study, we have shown how ZMYND8, a putative chromatin reader, chemosensitizes, chemo-resistant breast cancer cells, by modulating poised oncogenes.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

18 Samples

Download data: TXT