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Genome wide mapping of histone 3 lysine 79 dimethylation in MLL-AF6 murine leukemias

ABSTRACT: We report the genome wide distribution of H3K79 dimethylation in mouse MLL-AF6 positive leukemias to assess whether this epigenetic mark drives MLL-target gene expression. Examination of H3K79 dimethylation in bone marrow cells from sacrificed terminally ill MLL-AF6 positive leukemic mice. The retroviral MSCV-IRES-neo-MLL-AF6 construct was transduced into mouse bone marrow lineage negative Kit +, Sca + (LSK) cells and these cells were injected after G418 selection into irradiated syngenic mice to establish MLL-AF6 positive leukemias.

ORGANISM(S): Mus musculus

SUBMITTER: Amit Sinha 

PROVIDER: E-GEOD-43062 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The t(6;11)(q27;q23) is a recurrent chromosomal rearrangement that encodes the MLLAF6 fusion oncoprotein and is observed in patients with diverse hematologic malignancies. The presence of the t(6;11)(q27;q23) has been linked to poor overall survival in patients with AML. In this study, we demonstrate that MLL-AF6 requires continued activity of the histone-methyltransferase DOT1L to maintain expression of the MLL-AF6-driven oncogenic gene-expression program. Using gene-expression analysis and gen  ...[more]

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