Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Origins of MLL cancer stem cells govern leukemic self-renewal mediated by -catenin and Hoxa9

ABSTRACT: From mice, strand-specific RNA-Seq of granulocyte-myeloid progenitors (GMP) and hematopoietic stem cells (HSC). Cancer stem cells (CSC) were created with MLL-ENL transfections using puromycin for both GMP and HSCs. Further knock-outs were created of -catenin (Ctnnb1) and Hoxa9.

INSTRUMENT(S): Illumina HiSeq 2000

ORGANISM(S): Mus musculus

SUBMITTER: Bernd Zeisig

PROVIDER: E-MTAB-3647 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Similar Datasets

Project description:Transcriptional profiling of mouse comparing in vitro-derived DC progenitors from control and Gata2 conditional knockout mice. Two-condition experiment, Control DCs vs. G2 Knockout DCs. Biological replicates: 4 control, 3 Gata2 knockout, independently grown and harvested. One replicate per array. Dendritic cells (DCs) are critical immune response regulators; however, the mechanism of DC differentiation is not fully understood. Heterozygous germline GATA2 mutations induce GATA2 deficiency syndrome, characterized by monocytopenia, a predisposition to myelodysplasia/acute myeloid leukemia, and a profoundly reduced DC population, which is associated with increased susceptibility to viral infections, impaired phagocytosis, and decreased cytokine production. To define the role of GATA2 in DC differentiation and function, we studied Gata2 conditional knockout and haploinsufficient mice. Gata2 conditional deficiency significantly reduced the DC count, whereas Gata2 haploinsufficiency did not affect this population. GATA2 was required for the in vitro generation of DCs from Linâ??Sca-1+Kit+ cells, common myeloid-restricted progenitors, and common dendritic cell precursors, but not common lymphoid-restricted progenitors or granulocyte-macrophage progenitors, suggesting that GATA2 functions in the myeloid pathway of DC differentiation. Moreover, expression profiling demonstrated reduced expression of myeloid-related genes, including mafb, and increased expression of T-lymphocyte-related genes, including Gata3 and Tcf7, in Gata2-deficient DC progenitors. In addition, GATA2 was found to bind an enhancer element 190-kb downstream region of Gata3, and a reporter assay exhibited significantly reduced luciferase activity after adding this enhancer region to the Gata3 promoter, which was recovered by GATA sequence deletion within Gata3 +190. These results suggest that GATA2 plays an important role in cell fate specification toward the myeloid versus T lymphocyte lineage by regulating lineage-specific transcription factors in DC progenitors, thereby contributing to DC differentiation.

Dataset Information

Origins of MLL cancer stem cells govern leukemic self-renewal mediated by -catenin and Hoxa9

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets