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TAF1 is critical for AE driven leukemogenesis [ATAC-seq]

ABSTRACT: TAF1 is essential for AE driven leukemogenesis. Depletion of TAF1 impairs the recruitment of AE to its target genes, interfereing with its control of gene expression. The bromodomains of TAF1 associate with K43 acetylated AE and this association plays a role in the proliferationof AE expressing AML cells.

ORGANISM(S): Homo sapiens

PROVIDER: GSE134018 | GEO | 2019/09/11

REPOSITORIES: GEO

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TAF1 is critical for AE driven leukemogenesis [RNA-seq]

Project description:TAF1 is essential for AE driven leukemogenesis. Depletion of TAF1 impairs the recruitment of AE to its target genes, interfering with its control of gene expression. The bromodomains of TAF1 associate with K43 acetylated AE and this association plays a role in the proliferation of AE expressing AML cells.

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TAF1 is critical for AE driven leukemogenesis

Project description:This SuperSeries is composed of the SubSeries listed below.

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Genome-wide relationships between TAF1 and histone acetyltransferases in S. cerevisiae

Project description:Evidence suggests that the TAF1 subunit of TFIID is a histone acetyltransferase (HAT) that is functionally redundant with the Gcn5 HAT of the SAGA and ADA complexes. Here we test a number of predictions of this hypothesis by examining the in vivo histone acetylation targets of TAF1 and Gcn5, and re-examining the basis for the reported genome-wide functional redundancy between TAF1 and Gcn5. Our findings do not support a number of basic tenets of the hypothesis, thus bringing into question the physiological presence of any TAF1 HAT function in yeast. We have also conducted genome-wide expression profiles of numerous other HATs (Elp3, Hat1, Hpa2, Sas3) in an effort identify potential functional redundancy between TAF1 and other HATs, and find none. Further investigation of TAF1 and the Esa1 HAT re-affirm a link between histone H4 acetylation by Esa1, and TFIID binding via interactions with acetylated histone H4-binding protein Bdf1. Keywords: genetic modification

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Genome-wide relationships between TAF1 and histone acetyltransferases in S. cerevisiae - chIP-chip study

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TAF1 plays a critical role in AML1-ETO driven leukemogenesis.

Project description:AML1-ETO (AE) is a fusion transcription factor, generated by the t(8;21) translocation, that functions as a leukemia promoting oncogene. Here, we demonstrate that TATA-Box Binding Protein Associated Factor 1 (TAF1) associates with K43 acetylated AE and this association plays a pivotal role in the proliferation of AE-expressing acute myeloid leukemia (AML) cells. ChIP-sequencing indicates significant overlap of the TAF1 and AE binding sites. Knockdown of TAF1 alters the association of AE with chromatin, affecting of the expression of genes that are activated or repressed by AE. Furthermore, TAF1 is required for leukemic cell self-renewal and its reduction promotes the differentiation and apoptosis of AE+ AML cells, thereby impairing AE driven leukemogenesis. Together, our findings reveal a role of TAF1 in leukemogenesis and identify TAF1 as a potential therapeutic target for AE-expressing leukemia.

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