GEO DataSets

(Submitter supplied) The goal of this study is to develop a Plag1 signature and determine how its overexpression contributes to leukemogenesis. To study this, we transduced an immortalized (but not transformed) cell line (derived from Gata1s mutant fetal liver progenitor through insertional mutagenesis) by Plag1-expressing retrovirus. This turned a non-transformed cell line to a leukemogenic cell line. To study whether Plag1 overexpression led to deregulation of signaling pathways that may contribute to leukemic transformation, we generated microarray gene expression profiles of this cell line transduced with either Plag1 or the empty vector.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

8 Samples

Download data: CEL

(Submitter supplied) The goal of this study is to derive a mouse model of human Down Syndrome (DS) megakaryocytic leukemia involving mutations in the hematopoietic transcription factor, GATA1 (called GATA1s mutation). We achieved this through transduction of Gata1s mutant fetal progenitors by MSCV-based retrovirus expressing a GFP marker, followed by in vitro selection (for immortalized cell lines), and then in vivo selection (for transformed cell lines) through transplantation. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) The goal of this study is to derive a mouse model of human Down Syndrome (DS) megakaryocytic leukemia involving mutations in the hematopoietic transcription factor, GATA1 (called GATA1s mutation). We achieved this through transduction of Gata1s mutant fetal progenitors by MSCV-based retrovirus expressing a GFP marker, followed by in vitro selection (for immortalized cell lines), and then in vivo selection (for transformed cell lines) through transplantation. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL

(Submitter supplied) The goal of this study is to define a gene expression signature unique to DS-AMKL (acute megakaryoblastic leukemia or FAB M7 leukemia). A similar study was done previously, but using unfractionated patient leukemic samples. In this study, we sorted megakaryocytic leukemia blasts from patients and then compared their gene expression signatures to those from similarly sorted blasts from patients with non-DS AMKL. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

18 Samples

Download data: CEL

(Submitter supplied) In this project, we studied a mouse model of human Down Syndrome (DS) megakaryocytic leukemia involving mutations in the GATA1 transcription factor (called GATA1s mutation). The model was generated through retroviral insertional mutagenesis in Gata1s mutant fetal liver progenitors. In this study, we analyzed the dependency of these leukemic cells on the Gata1s mutant protein. Here we report Gata1s mutant leukemic cells were dependent on this mutant protein. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

11 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:

GPL1261 GPL570

47 Samples

Download data: CEL

(Submitter supplied) The goal of this study is to define the global gene expression profile of primary leukemic blasts from patients with different forms of myeloid leukemia and different FAB subtypes. Here we report the global gene expression profile of 2 patients with AML FAB M5, 2 patients with AML FAB M7, 3 patients with Down syndrome AML FAB M7 and 3 patients with Down syndrome transient leukemia.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

10 Samples

Download data: CEL

(Submitter supplied) The goal of this study is to define miR-125b-2 target genes in the hematopoietic system by genetic alteration of miR-125b expression levels. Here we report the identification of miR-125b-2 targets in the hematopoietic system by repressing miR125b in megakaryoblastic leukemia (AMKL) cell lines and overexpressing miR-125b-2 in hematopoietic stem and progenitor cells (CD34+-HSPCs)

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

10 Samples

Download data: CEL

(Submitter supplied) Serial replated GFP + lineage negative cells from Gata1deltaneodeltaHS fetal liver hematopoietic progenitors for 4 generations in methocult M3234 under megakaryocyte promoting conditions, IL3, TPO, IL6, and IL11. Cells were subject to retro-viral infection with MIGR1GFP, MIGR1ETS2, MIGR1ERG, and MIGR1FLI1.

Organism:

Mus musculus; Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6103

14 Samples

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(Submitter supplied) Patients with Down syndrome (DS, trisomy 21, T21) are at increased risk of transient abnormal myelopoiesis (TAM) and acute megakaryoblastic leukemia (ML-DS). Both TAM and ML-DS require prenatal somatic mutations in GATA1, resulting in the truncated isoform GATA1s. The mechanism by which individual chromosome 21 (HSA21) genes synergize with GATA1s for leukemic transformation is challenging to study, in part due to limited human cell models with wild type GATA1 or GATA1s. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

19 Samples

Download data: TSV

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

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Other; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL24247

12 Samples

Download data: BW

(Submitter supplied) The purpose of this study was to decipher the molecular function of ARID3A. We leveraged gene expression (RNA-Seq) and chromatin profiling (ATAC-Seq and CUT&RUN) to evaluate gene expression changes upon restoring Arid3a expression in the context of the Gata1s mutation and miR-125b overexpression

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL24247

1 Sample

Download data: BW

(Submitter supplied) The purpose of this study was to decipher the molecular function of ARID3A. We leveraged gene expression (RNA-Seq) and chromatin profiling (ATAC-Seq and CUT&RUN) to evaluate gene expression changes upon restoring Arid3a expression in the context of the Gata1s mutation and miR-125b overexpression

Organism:

Mus musculus

Type:

Other

Platform:

GPL24247

5 Samples

Download data: BW

(Submitter supplied) The purpose of this study was to decipher the molecular function of ARID3A. We leveraged gene expression (RNA-Seq) and chromatin profiling (ATAC-Seq and CUT&RUN) to evaluate gene expression changes upon restoring Arid3a expression in the context of the Gata1s mutation and miR-125b overexpression

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

6 Samples

Download data: TXT

(Submitter supplied) The purpose of this study was to decipher the gene expression changes in the ML-DS cell line CMK upon overexpression of ARID3A. For that, we used a doxycycline-inducible gene expression system to overexpress ARID3A

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

6 Samples

Download data: XLS

(Submitter supplied) The purpose of this study was to decipher the molecular network underlying the synergy between the GATA1s mutation and miR-125b. We used a doxycycline-regulated inducible system to determine gene expression changes associated with the expression of miR-125b.,

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

24 Samples

Download data: XLS

(Submitter supplied) The purpose of this study was to decipher the molecular network underlying the synergy between the GATA1s mutation and loss of Arid3a. We used gene expression profiling (RNA-Seq) to evaluate gene expression changes upon gain and loss of Arid3a in the context of the Gata1s mutation

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

17 Samples

Download data: XLS

(Submitter supplied) Individuals with Down syndrome (DS) are predisposed to develop acute megakaryoblastic leukemia (AMKL), characterized by expression of truncated GATA1 transcription factor protein (GATA1s) due to somatic mutation. The treatment outcome for DS-AMKL is more favorable than for AMKL in non-DS patients. To gain insight into gene expression differences in AMKL, we compared 24 DS and 39 non-DS AMKL samples. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

80 Samples

Download data: CEL

(Submitter supplied) mononuclear cells were isolated on a density gradient and RNA extracted using Trizol and the Promega SV column RNA purification. Affymetrix U133A chips were hybridised using standard procedures at the core facility of Dana Farber Cancer Institute. Keywords: disease state analysis

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

80 Samples

Download data

(Submitter supplied) Background: Children with Down syndrome (DS) are predisposed to acute megakaryoblastic leukemia (AMKL, or AML M7) and a related myeloid disorder, referred to as transient myeloproliferative disorder (TMD), or transient leukemia (TL). Recently, acquired mutations in the erythroid/megakaryocytic lineage-specific transcription factor GATA-1 have been identified in megakaryoblasts from virtually all DS patients with AMKL (DS-AMKL), as well as in nearly all DS neonates with TMD. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS1316

Platform:

GPL1261

10 Samples

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