GEO DataSets

Analysis of sorted chronic myelogenous leukemia (CML) CD34+CD38- cells cultured with histone deacetylase inhibitor analog LBH589 (LBH) and/or BCR-ABL tyrosine kinase inhibitor imatinib mesylate (IM). Results provide insight into molecular mechanisms underlying treatment of CML with LBH and IM.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 4 agent sets

Platform:

GPL570

Series:

GSE20876

12 Samples

Download data: CEL

(Submitter supplied) We investigated the ability of HDAC inhibitors (HDACi) to target CML stem cells. Treatment with HDACi combined with IM effectively induced apoptosis in quiescent CML progenitors resistant to elimination by IM alone, and eliminated CML stem cells capable of engrafting immunodeficient mice. In vivo administration of HDACi with IM markedly diminished LSC in a transgenic mouse model of CML. The interaction of IM and HDACi inhibited genes regulating hematopoietic stem cell maintenance and survival. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS4047

Platform:

GPL570

12 Samples

Download data: CEL

(Submitter supplied) ABL1 kinase inhibitors such as imatinib mesylate (IM) are effective in managing chronic myelogenous leukemia (CML) but incapable of eliminating leukemia stem cells (LSCs), suggesting that kinase−independent pathways support LSC survival. Given that the bone marrow hypoxic microenvironment supports hematopoietic stem cells, we investigated if hypoxia similarly contributes to LSC persistence. Importantly, we found that while BCR−ABL1 kinase remained effectively inhibited by IM under hypoxia, apoptosis became partially suppressed. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

24 Samples

Download data: TXT

(Submitter supplied) Lin-CD34+CD38+ and Lin-CD34-CD38- cells were isolated from 5 CML patients at diagnosis and 4 healthy donors.

Organism:

Homo sapiens

Type:

Expression profiling by RT-PCR

Platform:

GPL19066

18 Samples

Download data: TXT

(Submitter supplied) We show the molecular and functional characterization of a novel population of lineage-negative CD34-negative (Lin- CD34-) hematopoietic stem cells (HSCs) from chronic myelogenous leukemia (CML) patients at diagnosis. Molecular caryotyping and quantitative analysis of BCR/ABL transcript demonstrated that about one third of CD34- was leukemic. CML CD34- cells showed kinetic quiescence and limited clonogenic capacity. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL8300

6 Samples

Download data: CEL, CHP

(Submitter supplied) A comparison between parental K562 cells (CML) and two clones derived from this cell line : ImaR and PDR which are resistant against Imatinib mesylate and PD166326 respectively , two inhibitors of BCR-ABL. Keywords: gene expression, comparison

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL1456

6 Samples

Download data: GPR

(Submitter supplied) To understand gene expression signatures of CML stem cells underlying imatinib-resistance, we compared transcriptomes of CML stem and progenitor cells from vehicle and imatinib-treated CML mice, respectively.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

12 Samples

Download data: TXT

(Submitter supplied) Imatinib, as the first-line agent of chronic myeloid leukemia (CML), is ineffective in eradicating CML stem/progenitor cells, thus unable to prevent late relapse. Here we present data indicating that fenretinide preferentially targets CD34+ CML cells and enhances the efficacy of imatinib in CML. As tested by colony forming cell assays, both number and size of total colonies derived from CD34+ CML cells were significantly reduced by fenretinide, and by combining fenretinide with imatinib. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

8 Samples

Download data: CEL

(Submitter supplied) The effects of 7.5 micromolar parthenolide (PTL) were assessed on primary CD34+ acute myelogenous leukemia specimens obtained from 12 patients. Keywords: drug response, gene expression search agent

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

24 Samples

Download data: CEL