GEO DataSets

(Submitter supplied) We have used a combination of constitutive and inducible MLL-AF4 and AF4-MLL fusion genes to investigate the power of theses fusion proteins. All transgenes were stably or transiently transfected. Here, we compared 48 induction of MLL-AF4 or AF4-MLL (day 3) and looked for persistance at days 28. This was compared to the situation with constitutive MLL-AF4 with 48 inductionn of AF4-MLL at day 3 and day 28.

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL18573

18 Samples

Download data: TSV

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

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL18573

30 Samples

Download data

(Submitter supplied) We have used a constitutive MLL-AF4 fusion gene together with a inducible AF4-MLL fusion gene to investigate the power of theses fusion proteins. All transgenes were stably or transiently transfected.

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL18573

12 Samples

Download data: TSV

(Submitter supplied) [original title] Gene expression analysis of leukemic samples derived from AF4-MLL- or AF4-MLL/MLL-AF4-transduced and transplanted hematopoietic stem/precursor cells in C57BL6 mice. We used microarrays to analyze the global gene expression in leukemic cells with three distinct immunophenotypes.

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS4169

Platform:

GPL1261

4 Samples

Download data: CEL, CHP

Analysis of bone marrow of C57BL6 mice injected with AAF4.MLL-transduced or AF4.MLL/MLL.AF4-transduced leukemic cells. MLL fusion proteins initiate malignant transformation leading to the development of acute leukemia. Results provide insight into the leukemogenic properties of MLL fusion proteins.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 disease state, 3 genotype/variation, 4 other sets

Platform:

GPL1261

Series:

GSE20519

4 Samples

Download data: CEL, CHP

(Submitter supplied) The Mixed Lineage Leukemia 1 protein (MLL1) is an important epigenetic regulator required for the maintenance of gene activation during development. MLL1 chromosome translocations produce novel fusion proteins that cause aggressive leukemias in humans. Individual MLL1 fusion proteins have distinct leukemic phenotypes even when expressed in the same cell type, but how this distinction is delineated on a molecular level is poorly understood. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL11154

2 Samples

Download data: BIGBED, BIGWIG

(Submitter supplied) Chromatin accessibility was assessed by ATAC-Seq in lymphoid-primed multipotent progenitors (LMPPs) from human foetal livers (FLs) and mouse wild-type FLs as well as FLs from mouse embryos that express the oncofusion Mll-AF4 in the definitive blood system. The aim of this study was to establish whether overall chromatin accessibility at key haematopoietic sites and loci that have been linked to leukaemia are differentially accessible in human vs mouse LMPPs and whether this is altered by the expression of the Mll-AF4 oncofusion.

Organism:

Homo sapiens; Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL21273 GPL20795

10 Samples

Download data: BW

(Submitter supplied) The t(4;11)(q21;q23) translocation is associated with high-risk infant pro-B-cell acute lymphoblastic leukemia (B-ALL) and arises prenatally during embryonic/fetal hematopoiesis. The developmental/pathogenic contribution of the t(4;11)-resulting MLL-AF4 (MA4) and AF4-MLL (A4M) fusions remains enigmatic; MA4 is always expressed in t(4;11)+B-ALL patients, but the reciprocal fusion A4M is expressed in only 50% of patients. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20301

36 Samples

Download data: TXT

(Submitter supplied) In MLL-rearranged (MLLr) leukemias the N terminal part of the MLL gene can be fused to over 60 different partner genes. Here, we investigate the genome wide binding of the MLL-AF9 and MLL-AF4 fusion proteins and their epigenetic signatures in order to define a core set of MLLr targets. We uncover both common as well as specific MLL-AF9 and MLL-AF4 target genes, which are all marked by H3K79me2, H3K27ac, and H3K4me3. more...

Organism:

Homo sapiens

Type:

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

Platforms:

GPL10999 GPL11154

24 Samples

Download data: BEDGRAPH, WIG

(Submitter supplied) The t(4;11)(q21;q23) fuses MLL to AF4, the most common MLL fusion partner. Here we show that MLL fused to murine Af4, highly conserved with human AF4, produces high-titer retrovirus permitting efficient transduction of human CD34+ cells to generate a faithful model of t(4;11) proB ALL that fully recapitulates the immunophenotypic and molecular aspects of the disease. MLL-Af4 induces a distinct B-ALL from MLL-AF9 through differential DNA binding of the fusion proteins leading to specific gene expression patterns. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL16791

1 Sample

Download data: BEDGRAPH

(Submitter supplied) Transcriptome analysis by RNAseq of leukemia model promoted by MLL-Af4 or MLL-AF9 fusion proteins. We find each fusion protein promotes a specific gene signature correlating to those identified in patients

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15433

20 Samples

Download data: TXT

(Submitter supplied) Acute Lymphoblastic Leukemia (ALL) in infants (<1 year) is characterized by a poor prognosis and a high incidence of MLL translocations. Several studies demonstrated the unique gene expression profile associated with MLL-rearranged ALL, but generally small cohorts were analyzed as uniform patient groups regardless of the type of MLL translocation, while the analysis of translocation-negative infant ALL remained unacknowledged.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

73 Samples

Download data: CEL

(Submitter supplied) Childhood acute lymphoblastic leukemia (ALL) comprises a large group of genetic subtypes with a favorable prognosis characterized by a TEL-AML1-fusion, hyperdiploidy (>50 chromosomes) or E2A-PBX1 fusion and a smaller group with unfavorable outcome characterized by either a BCR-ABL-fusion, MLL-rearrangement or T-ALL. About 25% of precursor B-ALL are currently genetically unclassified and have an intermediate prognosis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

107 Samples

Download data: CEL, CHP

(Submitter supplied) Survival rates for children diagnosed with acute lymphoblastic leukemia (ALL) have drastically improved, but those carrying mutations in the Mixed Lineage Leukemia (MLL) gene continue to have a very poor prognosis. The most common MLL mutation in ALL is the t(4;11)(q21;q23) chromosome translocation that fuses MLL in frame with the AF4 gene producing MLL-AF4 and AF4-MLL fusion proteins. Previously, we showed that MLL-AF4 binds to the BCL-2 gene and directly activates it through DOT1L recruitment and increased H3K79me2/3 levels. more...

Organism:

Homo sapiens

Type:

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

Platforms:

GPL18573 GPL16791

21 Samples

Download data: BW, TXT

(Submitter supplied) The tumorigenesis capacity of MLL-AF4 alone is insufficient for causing leukemia. Based on the finding that an Flt3 gene mutation in the tyrosine kinase domain (TKD) was observed in approximately 15% of MLL leukemia, we investigated synergistic leukemogenesis effects of the two genes in vitro. In a mouse IL3-dependent cell line, 32Dc, the expression of MLL-AF4 and Flt3 TKD was induced using a lentiviral vector. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

3 Samples

Download data: CEL, CHP

(Submitter supplied) We created a mouse model where conditional expression of physiologic levels of an Mll-AF4 fusion oncogene induces development of acute lymphoblastic (ALL) or acute myeloid leukemias (AML). Immunophenotypic and gene expression analysis of the ALL cells demonstrated bone marrow replacement with B-precursor cells which express a gene expression profile that has significant overlap with profiles in human MLL-rearranged ALL. more...

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by array; Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL5082 GPL5811 GPL8321

49 Samples

Download data: BAR, BED, CEL

(Submitter supplied) We created a mouse model where conditional expression of physiologic levels of an Mll-AF4 fusion oncogene induces development of acute lymphoblastic (ALL) or acute myeloid leukemias (AML). ChIP-chip analysis demonstrated increased histone H3 Lysine 79 (H3K79) dimethylation that correlated with Mll-AF4 associated gene expression profiles in murine ALLs, and in human MLL-rearranged leukemias. In addition, human MLL-rearranged ALLs can be distinguished from other ALLs by their genome-wide H3K79 methylation profiles. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL5811

1 Sample

Download data: BAR, BED, BPMAP, CEL

(Submitter supplied) We created a mouse model where conditional expression of physiologic levels of an Mll-AF4 fusion oncogene induces development of acute lymphoblastic (ALL) or acute myeloid leukemias (AML). ChIP-chip analysis demonstrated increased histone H3 Lysine 79 (H3K79) dimethylation that correlated with Mll-AF4 associated gene expression profiles in murine ALLs, and in human MLL-rearranged leukemias. In addition, human MLL-rearranged ALLs can be distinguished from other ALLs by their genome-wide H3K79 methylation profiles. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL5811

2 Samples

Download data: BAR, BED, BPMAP, CEL

(Submitter supplied) We created a mouse model where conditional expression of physiologic levels of an Mll-AF4 fusion oncogene induces development of acute lymphoblastic (ALL) or acute myeloid leukemias (AML). ChIP-chip analysis demonstrated increased histone H3 Lysine 79 (H3K79) dimethylation that correlated with Mll-AF4 associated gene expression profiles in murine ALLs, and in human MLL-rearranged leukemias. In addition, human MLL-rearranged ALLs can be distinguished from other ALLs by their genome-wide H3K79 methylation profiles. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL5082

3 Samples

Download data: BAR, BED, BPMAP, CEL

(Submitter supplied) We created a mouse model where conditional expression of physiologic levels of an Mll-AF4 fusion oncogene induces development of acute lymphoblastic (ALL) or acute myeloid leukemias (AML). Immunophenotypic and gene expression analysis of the ALL cells demonstrated bone marrow replacement with B-precursor cells which express a gene expression profile that has significant overlap with profiles in human MLL-rearranged ALL. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL8321

4 Samples

Download data: CEL