GEO DataSets

(Submitter supplied) Abstract: Epigenetic alterations are a fundamental aspect of cancer cells, and epigenetic drugs are currently used in clinical practice for hematological malignancies. Pediatric neuro-ectodermal tumors originate from neural crest cells and show epigenetic defects of apoptotic pathways, which makes the introduction of epigenetic drugs in this patient category logical. However, the young age of these patients is accompanied by ongoing developmental processes which are regulated epigenetic mechanisms, and prompted us to study molecular effects of nanomolar dosage epigenetic drugs in neuro-ectodermal tumor cell lines. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

44 Samples

Download data: CEL, CHP

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

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL4126 GPL570

88 Samples

Download data: CEL, CHP, TXT

(Submitter supplied) Epigenetic alterations are a fundamental aspect of cancer cells, and epigenetic drugs are currently used in clinical practice for hematological malignancies. Pediatric neuro-ectodermal tumors originate from neural crest cells and show epigenetic defects of apoptotic pathways, which points to sensitivity towards epigenetic drugs in this patient group. The young age of these patients is accompanied by However, ongoing developmental processes regulated by epigenetic mechanisms may be deregulated by epigenetic drugs in this patient group that is characterized by young age. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL4126

44 Samples

Download data: TXT

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

Organism:

synthetic construct; Homo sapiens

Type:

Expression profiling by array; Non-coding RNA profiling by array

Platforms:

GPL8019 GPL8786

69 Samples

Download data: CEL

(Submitter supplied) The contribution of aberrant DNA methylation and the downstream effects in tumorogenesis through silencing of tumor suppressor genes (TSGs) and microRNAs has been investigated. Since these epigenetic alterations can be reversed, we investigated the effects of the epigenetic therapy in breast cancer cell lines. We used microarrays to investigate the global microRNA expression profile after demethylation treatment with 5-aza-2’-deoxycytidine (DAC) in breast cancer cell lines and identified distinct classes of early and late systematic stable or transient effects of the treatment.

Organism:

synthetic construct; Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL8786

27 Samples

Download data: CEL

(Submitter supplied) The contribution of aberrant DNA methylation and the downstream effects in tumorogenesis through silencing of tumor suppressor genes (TSGs) and microRNAs has been investigated. Since these epigenetic alterations can be reversed, we investigated the effects of the epigenetic therapy in breast cancer cell lines. We used microarrays to investigate the global gene expression profile after demethylation treatment with 5-aza-2’-deoxycytidine (DAC) in breast cancer cell lines and identified distinct classes of early and late systematic stable or transient effects of the treatment.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL8019

42 Samples

Download data: CEL

(Submitter supplied) CpG island methylation profiling of human cholangiocarcinoma, ECC and ICC, cases compared to matched normal controls or to pools of corresponding normal controls. Goal was to identify cholangiocarcinoma-specific differentially methylated regions (DMRs).

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL9767

18 Samples

Download data: TXT

(Submitter supplied) Background: In high-grade serous ovarian cancer (HGSOC) intrinsic and/or acquired resistance against platinum-containing chemotherapy is a major obstacle for successful treatment. A low frequency of somatic mutations, but frequent epigenetic alterations including DNA methylation in HGSOC tumors, presents the cancer epigenome as a relevant target for innovative therapy. Patient-derived xenografts (PDXs) supposedly are good preclinical models for identifying novel drug targets. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

22 Samples

Download data: IDAT

(Submitter supplied) Introduction: Hepatocellular carcinoma (HCC) is one of the most aggressive solid tumors and oncogenic pathways (e.g Akt, IGF signaling) are often activated in high proliferating HCC. Among several genetic alterations, epigenetic changes seem to be involved in the development and progression of HCC. DNA hypermethylation of promoter regions is almost always associated with transcriptional silencing and can lead to inactivation of tumor suppressor genes (TSG) in cancer cells. more...

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

102 Samples

Download data: TXT

(Submitter supplied) Genome wide DNA methylation profiling of paired adjacent and hepatocellular samples and 8 non-diseased liver samples. The Illumina Infinium 27k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 27,000 CpGs. Samples included 12 paired adjacent and 12 hepatocellular samples.

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

32 Samples

Download data: TXT

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

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by array; Genome variation profiling by SNP array

Platforms:

GPL6102 GPL8490 GPL6801

69 Samples

Download data: CEL, CHP

(Submitter supplied) Osteosarcomas are the most common primary malignant tumours of bone, and almost all conventional osteosarcomas are high-grade tumours showing complex genomic aberrations. We have integrated genome-wide genetic and epigenetic profiles from the EuroBoNeT panel of 19 human osteosarcoma cell lines based on microarray technologies. The cell lines showed complex patterns of DNA copy number changes, where copy number gains were significantly associated with gene-rich regions of the genome and losses with gene-poor areas. more...

Organism:

Homo sapiens

Type:

Genome variation profiling by SNP array

Platform:

GPL6801

19 Samples

Download data: CEL, CHP

(Submitter supplied) Osteosarcomas are the most common primary malignant tumours of bone, and almost all conventional osteosarcomas are high-grade tumours showing complex genomic aberrations. We have integrated genome-wide genetic and epigenetic profiles from the EuroBoNeT panel of 19 human osteosarcoma cell lines based on microarray technologies. The cell lines showed complex patterns of DNA copy number changes, where copy number gains were significantly associated with gene-rich regions of the genome and losses with gene-poor areas. more...

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

25 Samples

Download data: TXT

(Submitter supplied) Osteosarcomas are the most common primary malignant tumours of bone, and almost all conventional osteosarcomas are high-grade tumours showing complex genomic aberrations. We have integrated genome-wide genetic and epigenetic profiles from the EuroBoNeT panel of 19 human osteosarcoma cell lines based on microarray technologies. The cell lines showed complex patterns of DNA copy number changes, where copy number gains were significantly associated with gene-rich regions of the genome and losses with gene-poor areas. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

25 Samples

Download data: TXT

(Submitter supplied) We have used a human gene promoter tiling microarray platform to analyze a cell line model of lymph node metastasis comprised of a poorly metastatic MDA-MB-468GFP human breast adenocarcinoma cell line and its highly metastatic variant (468LN). Gene networks and pathways associated with metastasis were identified and target genes associated with epithelial-mesenchymal transition (EMT) was validated with respect to DNA methylation effects on gene expression. more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL5082

6 Samples

Download data: CEL, TXT

(Submitter supplied) Two established cell lines, LNCaP and DU145 and two primary prostate cancer cell lines, PCSC1-2 were invaded toward a stem cell media through Matrigel. DNA was isolated from Non-invasive cells and invasive cells.

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

4 related Platforms

16 Samples

Download data: TXT

(Submitter supplied) Background: Neuroblastoma is a childhood cancer in which many children still have poor outcomes, emphasising the need to better understand its pathogenesis. Despite recent genome-wide mutation analyses, most neuroblastomas do not contain recognisable driver mutations, suggesting that epigenetic changes could underlie many cases. Methods: To discover genes that become epigenetically deregulated during neuroblastoma tumorigenesis, we compared neuroblastomas to their neural crest precursor cells, using genome-wide DNA methylation analysis; probing CpG island promoter microarrays with methyl CpG-immunoprecipitated DNA. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL16062

5 Samples

Download data: PAIR

(Submitter supplied) Estrogen signaling and epigenetic modifications, in particular DNA methylation, are involved in regulation of gene expression in breast cancers. Here we investigated a potential regulatory cross-talk between these two pathways by identifying their common target genes and exploring potential underlying molecular mechanisms in human MCF7 breast cancer cells. Principal Findings: Gene expression profiling revealed that the expression of approximately 150 genes was influenced by both 17β-estradiol (E2) and a hypomethylating agent 5-aza-2’-deoxycytidine (DAC). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL13158

12 Samples

Download data: CEL, XLS

(Submitter supplied) UHRF1 is a major regulator of epigenetic mechanism and is overexpressed in various human malignancies. In this study, we examined the involvement of UHRF1 in aberrant DNA methylation in colorectal cancer (CRC). In CRC cells, transient UHRF1 knockdown rapidly induced DNA demethylation across entire genomic regions, including CpG islands, gene bodies and repetitive elements. Nonetheless, UHRF1 depletion only minimally reversed CpG island hypermethylation-associated gene silencing. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16699

9 Samples

Download data: TXT

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

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL13534 GPL16699

23 Samples

Download data: TXT