Gene Set: TONKS_TARGETS_OF_RUNX1_RUNX1T1_FUSION_HSC_DN

Standard name TONKS_TARGETS_OF_RUNX1_RUNX1T1_FUSION_HSC_DN
Systematic name M4723
Brief description Genes down-regulated in normal hematopoietic progenitors by RUNX1-RUNX1T1 [GeneID=861;862] fusion.
Full description or abstract The t(8;21)(q22;q22) occurs frequently in acute myelogenous leukaemia and gives rise to the transcription factor fusion protein, RUNX1-RUNX1T1 (also known as AML1-ETO). To identify the genes dysregulated by the aberrant transcriptional activity of RUNX1-RUNX1T1, we used microarrays to determine the effect of this mutation on gene expression in human progenitor cells and during subsequent development. Gene signatures of these developmental subsets were very dissimilar indicating that effects of RUNX1-RUNX1T1 are highly context dependent. We focused on gene changes associated with the granulocytic lineage and identified a clinically relevant subset of these by comparison with 235 leukaemia patient transcriptional signatures. We confirmed the overexpression of a number of significant genes (Sox4, IL-17BR, CD200 and gamma-catenin). Further, we show that overexpression of CD200 and gamma-catenin is also associated with the inv(16) abnormality which like RUNX1-RUNX1T1 disrupts core binding factor activity. We investigated the functional significance of CD200 and gamma-catenin overexpression in normal human progenitor cells. The effect of IL17 on growth was also assessed. Individually, none of these changes were sufficient to recapitulate the effects of RUNX1-RUNX1T1 on normal development. These data provide the most comprehensive and pertinent assessment of the effect of RUNX1-RUNX1T1 on gene expression and demonstrate the highly context-dependent effects of this fusion gene.
Collection C2: curated gene sets
      CGP: chemical and genetic perturbations
Source publication Pubmed 17898786   Authors: Tonks A,Pearn L,Musson M,Gilkes A,Mills KI,Burnett AK,Darley RL
Exact source Table 2S: list 1
Related gene sets (show 12 additional gene sets from the source publication)

(show 4 gene sets from the same authors)
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Organism Homo sapiens
Contributed by Arthur Liberzon (Broad Institute)
Source platform HG-U133A
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Compendia expression profiles Human tissue compendium (Novartis)
NCI-60 cell lines (National Cancer Institute)
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Version history 3.0: First introduced

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