GEO DataSets

(Submitter supplied) Reversing gene expression signatures in relapsed patient may restore chemosensitivity. We demonstrate that the histone deacetylase inhibitor vorinostat not only reprograms the aberrant gene expression profile of relapsed blasts but is synergistic when applied prior to chemotherapy in primary patient samples and leukemia cell lines

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

14 Samples

Download data: CEL

(Submitter supplied) Esophageal cancers (ECs) are highly aggressive tumors with poor prognosis and few treatment options. This study investigated the possibility of treating esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC) cells by inhibitors of broad and specific histone deacetylases (HDACi; SAHA, MS-275, FK228) and/or of DNMT (Azacytidine, AZA). Drug targets (HDAC1,2,3 and DNMT1) were present in non-neoplastic (HET-1A), ESCC (OE21) and EAC (OE33) cell lines. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

36 Samples

Download data: TXT

(Submitter supplied) MLL-r infant acute lymphoblastic leukemia (ALL) has largely unclear oncogenesis. It has been shown unrelated to copy number change or mutations in the tyrosine kinome. We therefore, explored the possible role of genome wide CpG island hypermethylation in MLL-r infant ALL. We employed the HpaII-tiny fragment Enrichment by Ligation-mediated PCR (HELP) assay to examine MLL-r infant leukemia samples (n=5), other common childhood ALL (n=5) and normals (n=5). more...

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL6604

15 Samples

Download data: PAIR

(Submitter supplied) Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoid neoplasm in the world representing 30-40% of all lymphomas. Standard immunochemotherapy (cyclophosphamide, doxorubicin, vincristine, prednisone and rituximab) ensures cure in 60 to 65% of patients, while the rest progress or relapse. While advances have been made in the treatment of DLBCL, especially with the addition of rituximab, it is now apparent that there may be significant differences in prognosis that are related to the cell of origin, and that this disease is heterogeneous and novel treatment options are needed. more...

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by array

Dataset:

GDS4006

Platforms:

GPL6947 GPL8490

24 Samples

Download data: TXT

Analysis of three large B-cell lymphoma cell lines treated with the histone deacetylase inhibitor panobinostat, hypomethylating agent decitabine, or both for 48hrs. Panobinostat synergizes with decitabine in DLBCL cells. Results provide insight into the molecular basis for this synergistic effect.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 4 agent, 3 cell line sets

Platform:

GPL6947

Series:

GSE27226

12 Samples

Download data

(Submitter supplied) Determine the differences in gene expression profiles of MV-4-11 AML cells treated with HDAC1/2-selective inhibition, azacitidine, or the combination of the two agents. Acute myeloid leukemia (AML) is a heterogeneous group of hematopoietic stem cell disorders characterized by defects in myeloid differentiation and increased proliferation of neoplastic hematopoietic precursor cells. Outcomes for patients with AML remain poor, highlighting the need for novel treatment options. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL15207

4 Samples

Download data: CEL

(Submitter supplied) By using high-density DNA microarrays, we analyzed the gene-expression profile of Hodgkin's lymphoma cell line L-540 after tretament with the histone deactelyse inhibitor vorinostat. Kewitz et al., submitted

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

2 Samples

Download data: CEL

(Submitter supplied) Epigenetic changes play a role in the pathogenesis of myeloid malignancies and hypomethylating agents have shown efficacy in these diseases. We studied the apoptotic effect, the genome-wide methylation and gene expression profiles in HL60 cells following decitabine treatment, using micro-array technologies. Decitabine treatment resulted in a decrease in global DNA methylation, corresponding to 4876 probeset IDs with significantly reduced methylation levels, while expression of 2583 IDs was induced. more...

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL570 GPL5082

12 Samples

Download data: CEL, TXT

(Submitter supplied) Pediatric AML cell lines (MV4;11, AML-193 and THP-1) were treated with DNA hypomethylating agent (azacytidine) and a pan histone deactylase inhibitor (panobinostat) alone or in combination. Treatment of AML cell lines with these epigenetic drugs synergistically suppresses cell viability in vitro and in xenograft models in vivo. Data show differential regulation of gene expression in AML cell lines by epigenetic drugs at concentrations which retained cell viability at a minimum of 75% even in the combination treatment.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

60 Samples

Download data: CEL, CHP

(Submitter supplied) Histone modifcations at the p15INK4b gene were compared in sample with p15INK4b DNA methylation vs. samples with no DNA methylation AML clinical samples without DNA methylation exhibit bivalent histone modifications at p15INK4b, while clinical samples with DNA methylation display lower H3K4me3 and retain H3K27me3

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL8754

40 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

Platforms:

GPL570 GPL8490

166 Samples

Download data: CEL

(Submitter supplied) Relapse samples have high methylation level than dianosis samples

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL8490

68 Samples

Download data: TXT

(Submitter supplied) There is a distinct signature of differentially expressed probes from diagnosis to relapse

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

98 Samples

Download data: CEL

(Submitter supplied) If relapses occur in only 20% of T-ALL children, 70% will have a dismal outcome, justifying the need for new therapeutic options. Transcriptomic plasticity is a property of leukemic cells to adapt their functions and resist to treatments. The project aims at analyzing, at a single cell resolution, the variations of the gene expression, between diagnostic and relapse. This will allow identification of relapse-associated genes as potential new targets for future innovative treatments.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

3 Samples

Download data: H5