H3K79 Methylation Profiles Define Murine and Human MLL-AF4 Leukemias

We created a mouse model wherein conditional expression of an Mll-AF4 fusion oncogene induces B precursor acute lymphoblastic (ALL) or acute myeloid leukemias (AML). Gene expression profile analysis of the ALL cells demonstrated significant overlap with human MLL-rearranged ALL. ChIP-chip analysis d...

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Veröffentlicht in:Cancer cell 2008-11, Vol.14 (5), p.355-368
Hauptverfasser: Krivtsov, Andrei V., Feng, Zhaohui, Lemieux, Madeleine E., Faber, Joerg, Vempati, Sridhar, Sinha, Amit U., Xia, Xiaobo, Jesneck, Jonathan, Bracken, Adrian P., Silverman, Lewis B., Kutok, Jeffery L., Kung, Andrew L., Armstrong, Scott A.
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container_end_page 368
container_issue 5
container_start_page 355
container_title Cancer cell
container_volume 14
creator Krivtsov, Andrei V.
Feng, Zhaohui
Lemieux, Madeleine E.
Faber, Joerg
Vempati, Sridhar
Sinha, Amit U.
Xia, Xiaobo
Jesneck, Jonathan
Bracken, Adrian P.
Silverman, Lewis B.
Kutok, Jeffery L.
Kung, Andrew L.
Armstrong, Scott A.
description We created a mouse model wherein conditional expression of an Mll-AF4 fusion oncogene induces B precursor acute lymphoblastic (ALL) or acute myeloid leukemias (AML). Gene expression profile analysis of the ALL cells demonstrated significant overlap with human MLL-rearranged ALL. ChIP-chip analysis demonstrated histone H3 lysine 79 (H3K79) methylation profiles that correlated with Mll-AF4-associated gene expression profiles in murine ALLs and in human MLL-rearranged leukemias. Human MLL-rearranged ALLs could be distinguished from other ALLs by their H3K79 profiles, and suppression of the H3K79 methyltransferase DOT1L inhibited expression of critical MLL-AF4 target genes. We thus demonstrate that ectopic H3K79 methylation is a distinguishing feature of murine and human MLL-AF4 ALLs and is important for maintenance of MLL-AF4-driven gene expression.
doi_str_mv 10.1016/j.ccr.2008.10.001
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Gene expression profile analysis of the ALL cells demonstrated significant overlap with human MLL-rearranged ALL. ChIP-chip analysis demonstrated histone H3 lysine 79 (H3K79) methylation profiles that correlated with Mll-AF4-associated gene expression profiles in murine ALLs and in human MLL-rearranged leukemias. Human MLL-rearranged ALLs could be distinguished from other ALLs by their H3K79 profiles, and suppression of the H3K79 methyltransferase DOT1L inhibited expression of critical MLL-AF4 target genes. 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subjects Animals
Biomarkers, Tumor - genetics
Biomarkers, Tumor - metabolism
Cell Differentiation
CELLCYCLE
Cells, Cultured
Chromatin Immunoprecipitation
Female
Flow Cytometry
Gene Expression Profiling
Gene Expression Regulation, Leukemic
Gene Rearrangement
Histone-Lysine N-Methyltransferase
Histones - chemistry
Histones - genetics
Histones - metabolism
Homeodomain Proteins - metabolism
Humans
Immunophenotyping
Integrases - metabolism
Leukemia, Myeloid, Acute - genetics
Leukemia, Myeloid, Acute - pathology
Lysine - chemistry
Lysine - genetics
Lysine - metabolism
Male
Methylation
Methyltransferases - antagonists & inhibitors
Methyltransferases - physiology
Mice
Mice, Transgenic
Myeloid-Lymphoid Leukemia Protein - physiology
Oligonucleotide Array Sequence Analysis
Oncogene Proteins, Fusion - physiology
Precursor B-Cell Lymphoblastic Leukemia-Lymphoma - genetics
Precursor B-Cell Lymphoblastic Leukemia-Lymphoma - pathology
Principal Component Analysis
Protein Methyltransferases - genetics
Protein Methyltransferases - metabolism
RNA, Small Interfering - pharmacology
Transcription, Genetic
title H3K79 Methylation Profiles Define Murine and Human MLL-AF4 Leukemias
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