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Dnmt3a haploinsufficiency transforms Flt3-ITD myeloproliferative disease into a rapid, spontaneous, and fully-penetrant acute myeloid leukemia

ABSTRACT: This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

ORGANISM(S): Mus musculus

SUBMITTER: Nathan Salomonis

PROVIDER: E-GEOD-77849 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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DNMT3A Haploinsufficiency Transforms FLT3ITD Myeloproliferative Disease into a Rapid, Spontaneous, and Fully Penetrant Acute Myeloid Leukemia.

Meyer Sara E SE Qin Tingting T Muench David E DE Masuda Kohei K Venkatasubramanian Meenakshi M Orr Emily E Suarez Lauren L Gore Steven D SD Delwel Ruud R Paietta Elisabeth E Tallman Martin S MS Fernandez Hugo H Melnick Ari A Le Beau Michelle M MM Kogan Scott S Salomonis Nathan N Figueroa Maria E ME Grimes H Leighton HL

Cancer discovery 20160325 5

<h4>Unlabelled</h4>Cytogenetically normal acute myeloid leukemia (CN-AML) represents nearly 50% of human AML. Co-occurring mutations in the de novo DNA methyltransferase DNMT3A and the FMS related tyrosine kinase 3 (FLT3) are common in CN-AML and confer a poorer prognosis. We demonstrate that mice with Flt3-internal tandem duplication (Flt3(ITD)) and inducible deletion of Dnmt3a spontaneously develop a rapidly lethal, completely penetrant, and transplantable AML of normal karyotype. AML cells re ...[more]

PMID: 27016502

Similar Datasets

Dnmt3a haploinsufficiency transforms Flt3-ITD myeloproliferative disease into a rapid, spontaneous, and fully-penetrant acute myeloid leukemia (Single Cell RNA-Seq)

Project description:Cytogenetically normal acute myeloid leukemia (CN-AML) represents nearly 50% of human acute myeloid leukemia (AML) cases with a 5-year overall survival of approximately 30%. In CN-AML with poorer prognosis, mutations in the de novo DNA methyltransferase (DNMT3A) and the FMS-like tyrosine kinase 3 (Flt3) commonly co-occur (1-3). We demonstrate that mice with Flt3-internal-tandem duplication (Flt3ITD) and inducible deletion of Dnmt3a spontaneously develop a rapidly-lethal, completely-penetrant, and transplantable AML of normal karyotype. These murine AML retain a single Dnmt3a floxed allele, revealing the oncogenic potential of Dnmt3a haploinsufficiency. FLT3-ITD/DNMT3A-mutant primary human and murine AML demonstrate a similar pattern of global DNA methylation. In the murine model, rescuing DNMT3A expression was accompanied by DNA re-methylation and loss of clonogenic potential, suggesting that Dnmt3a-mutant oncogenic effects are reversible. Differentially methylated genomic regions were associated with changes in the expression of nearby genes. Moreover, dissection of the cellular architecture of the AML model using single-cell RNA-Seq, flow cytometry and colony assays identified clonogenic subpopulations that differentially express genes that are sensitive to the methylation of nearby genomic loci and varied in response to Dnmt3a levels. Thus, Dnmt3a haploinsufficiency transforms Flt3ITD myeloproliferative disease by modulating methylation-sensitive gene expression within a clonogenic AML subpopulation. To identify the gene expression changes associated with Dnmt3a loss of function in human and murine Flt3-ITD and Dnmt3a-mutant AML (Single Cell RNA-Seq).

2016-03-27 | E-GEOD-77847 | biostudies-arrayexpress

Dnmt3a haploinsufficiency transforms Flt3-ITD myeloproliferative disease into a rapid, spontaneous, and fully-penetrant acute myeloid leukemia (Bulk RNA-Seq)

2016-03-27 | E-GEOD-77846 | biostudies-arrayexpress

A multi-scale approach reveals that NFkB cRel enforces a B-cell decision to divide.

Project description:The transcriptomes of individual small and large B cells after 24 h of stimulation were sequenced and genes upregulated in small or large cells were found and analyzed to provide a global charactarization of transcription patterns in growing B cells. We identified 5 large and 5 small viable B cells from images of the C1 IFC containing captured cells. We prepared libraries for the 10 individual cells, a positive bulk control (containing diluted bulk cDNA), a negative control containing only the ERCC spikeins, and a 0h bulk control.

2015-02-18 | E-GEOD-64156 | biostudies-arrayexpress

Synovial microenvironment-influenced mast cells promote the progression of rheumatoid arthritis

Project description:Mast cells are phenotypically and functionally highly heterogeneous, and their state is possibly controlled by their local microenvironment. Therefore, concrete analyses are needed to understand whether mast cells act as powerful motivators or dispensable bystanders in specific diseases. Here, we evaluated the correlation between synovial mast cells and rheumatoid arthritis (RA) disease severity, and the efficacy of therapeutic interventions against mast cells. We showed that degranulation of mast cells in inflammatory synovial tissues of RA patients was induced via MAS-related G protein-coupled receptor X2 (MRGPRX2), and the expression of MHC class II (MHC II) and costimulatory molecules on mast cells were upregulated. These unique signaling response led to mast cell activation and promoted T cell responses, resulting in the progression of RA. Collagen-induced arthritis mouse models treated with a combination of anti-IL-17A and cromolyn sodium, a mast cell membrane stabilizer, showed significantly reduced clinical severity and decreased bone erosion. The findings of the present study suggest that synovial microenvironment-influenced mast cells contribute to RA and may provide a novel mast cell-targeting therapy for RA.

2024-01-07 | PXD038584 | Pride

Single CD4+ cells after Nippostrongylus brasiliensis infection

Project description:We were interested in investigating the heterogeneity of CD4+ Th2 cells during infection response. In order to do so we injected Nippostrongylus brasiliensis (Nb) in recipient mice as this is known to elicit a Type 2 response. Mice were subcutaneously injected with Nb larvae and single CD4+ cells were isolated from mediastinal lymph nodes, mesenteric lymph nodes, and lungs 5 days after infection.

2016-04-13 | E-MTAB-4619 | biostudies-arrayexpress

Trancriptional comparison of Zbtb32-deficient and -sufficient cells

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2016-06-10 | E-GEOD-83194 | biostudies-arrayexpress

Trancriptional comparison of Zbtb32-deficient and -sufficient NP-specific memory B cells at day 7 of recall response [memory B cells]

Project description:Memory B cell responses are more rapid and of greater magnitude than are primary antibody responses. The mechanisms by which these secondary responses are eventually attenuated remain unknown. We demonstrate that the transcription factor ZBTB32 limits the rapidity and duration of antibody recall responses. ZBTB32 is highly expressed by mouse and human memory B cells, but not by their naÃ¯ve counterparts. Zbtb32-/- mice mount normal primary antibody responses to T-dependent antigens. However, Zbtb32-/- memory B cell-mediated recall responses occur more rapidly and persist longer than do control responses. Microarray analyses demonstrate that Zbtb32-/- secondary bone marrow plasma cells display elevated expression of genes that promote cell cycle progression and mitochondrial function relative to wild-type controls. BrdU labeling and adoptive transfer experiments confirm more rapid production and a cell-intrinsic survival advantage of Zbtb32-/- secondary plasma cells relative to wild-type counterparts. ZBTB32 is therefore a novel negative regulator of antibody recall responses. CD45.2 wild type and Zbtb32-/- splenocytes from NP-CGG-immune donors were transferred into CD45.1 recipients and challenged with NP-CGG. CD45.2 donor NP-specific memory B cells were isolated from the spleen 7 days later. 5-6 biological replicates of each genotype were performed.

2016-06-10 | E-GEOD-83190 | biostudies-arrayexpress

Large conserved domains of low DNA methylation maintained by 5-hydroxymethycytosine and Dnmt3a [Bisulfite-Seq]

Project description:Gains and losses in DNA methylation are prominent genomic features of all mammalian cell types. To gain insight into mechanisms that could promote shifts in DNA methylation patterns and thus contribute to cell fate, including malignant transformation, we performed genome-wide mapping of 5-methylcytosine in purified wild type and Dnmt3a conditional knockout hematopoietic stem cells (HSCs). We generated 1,121 million (control HSCs), and 1,213 million (Dnmt3a knockout HSCs) raw reads; about 81.4% and 88.7%, respectively, were successfully aligned to either strand of the reference genome (mm9), obtainig an average CG coverage of 39.5-fold (wild type) and 47.0-fold (Dnmt3a kockout). Whole genome bisulfite sequencing of secondarily-transplanted wild-type and Dnmt3a conditional knockout hematopoietic stem cells using Illumina HiSeq 2000

2013-11-17 | E-GEOD-49714 | biostudies-arrayexpress

Tyrosine 842 in the activation loop is required for full transformation by the oncogenic mutant FLT3-ITD

Project description:The type III receptor tyrosine kinase, FLT3 is frequently mutated in acute myeloid leukemia. Phosphorylation of FLT3 on tyrosine residues is a critical event for downstream signaling. Here we studied the role of Y842 residue of FLT3, which is located in the activation loop.

2017-05-02 | E-MTAB-5258 | biostudies-arrayexpress

Large conserved domains of low DNA methylation maintained by 5-hydroxymethycytosine and Dnmt3a (CMS bisulfite-seq)

Project description:Gains and losses in DNA methylation are prominent genomic features of all mammalian cell types. To gain insight into mechanisms that could promote shifts in DNA 5-hydroxymethylation (5hmc) patterns and thus contribute to cell fate, including malignant transformation, we performed genome-wide mapping of 5hmc in purified wild type and Dnmt3a conditional knockout hematopoietic stem cells (HSCs) using cytosine-5-methylenesulphonate sequencing (CMS-seq). Comparing anti-CMS pulldown to input control, we identified 107,549 and 175,682 peaks of 5hmc enrichment in control and Dnmt3a knockout HSCs, respectively. Whole genome CMS-enriched bisulfite sequencing of secondarily-transplanted wild-type and Dnmt3a conditional knockout hematopoietic stem cells using Illumina HiSeq 2000

2014-01-22 | E-GEOD-53742 | biostudies-arrayexpress

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