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Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE153281 | GEO | 2020/12/31

REPOSITORIES: GEO

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Definition of a small core transcriptional circuit regulated by AML1-ETO.

Project description:Transcription factors regulate gene networks controlling normal hematopoiesis and are frequently deregulated in acute myeloid leukemia (AML). Critical to our understanding of the mechanism of cellular transformation by oncogenic transcription factors is the ability to define their direct gene targets. However, gene network cascades can change within minutes to hours, making it difficult to distinguish direct from secondary or compensatory transcriptional changes by traditional methodologies. To overcome this limitation, we devised cell models in which the AML1-ETO protein could be quickly degraded upon addition of a small molecule. The rapid kinetics of AML1-ETO removal, when combined with analysis of transcriptional output by nascent transcript analysis and genome-wide AML1-ETO binding by CUT&RUN, enabled the identification of direct gene targets that constitute a core AML1-ETO regulatory network. Moreover, derepression of this gene network was associated with RUNX1 DNA binding and triggered a transcription cascade ultimately resulting in myeloid differentiation.

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Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [PRO-seq]

Project description:Transcription factors regulate gene networks controlling normal hematopoiesis and are frequently deregulated in acute myeloid leukemia (AML). Critical to our understanding of the mechanism of cellular transformation by oncogenic transcription factors is the ability to define their direct gene targets. However, gene network cascades can change within minutes to hours, making it difficult to distinguish direct from secondary or compensatory transcriptional changes by traditional methodologies. Utilizing CRISPR-based genome editing, we inserted a degron tag into the endogenous AML1-ETO locus of Kasumi-1 cells, as well as overexpressed a degradable AML1-ETO protein in CD34+ human cord blood cells. This allowed rapid AML1-ETO protein degradation upon addition of a proteolysis targeting chimera (PROTAC). Furthermore, by combining rapid degradation with nascent transcript analysis (PRO-seq), RNA-seq and Cut&Run, we have defined the core AML1-ETO regulatory network. De-repression of this small set of genes set off a cascade of transcriptional events resulting in myeloid differentiation.

2020-12-31 | GSE153267 | GEO

Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [RNA-seq]

Project description:Transcription factors regulate gene networks controlling normal hematopoiesis and are frequently deregulated in acute myeloid leukemia (AML). Critical to our understanding of the mechanism of cellular transformation by oncogenic transcription factors is the ability to define their direct gene targets. However, gene network cascades can change within minutes to hours, making it difficult to distinguish direct from secondary or compensatory transcriptional changes by traditional methodologies. Utilizing CRISPR-based genome editing, we inserted a degron tag into the endogenous AML1-ETO locus of Kasumi-1 cells, as well as overexpressed a degradable AML1-ETO protein in CD34+ human cord blood cells. This allowed rapid AML1-ETO protein degradation upon addition of a proteolysis targeting chimera (PROTAC). Furthermore, by combining rapid degradation with nascent transcript analysis (PRO-seq), RNA-seq and Cut&Run, we have defined the core AML1-ETO regulatory network. De-repression of this small set of genes set off a cascade of transcriptional events resulting in myeloid differentiation.

2020-12-31 | GSE153264 | GEO

Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [ChIP-seq, Cut&Run]

Project description:Transcription factors regulate gene networks controlling normal hematopoiesis and are frequently deregulated in acute myeloid leukemia (AML). Critical to our understanding of the mechanism of cellular transformation by oncogenic transcription factors is the ability to define their direct gene targets. However, gene network cascades can change within minutes to hours, making it difficult to distinguish direct from secondary or compensatory transcriptional changes by traditional methodologies. Utilizing CRISPR-based genome editing, we inserted a degron tag into the endogenous AML1-ETO locus of Kasumi-1 cells, as well as overexpressed a degradable AML1-ETO protein in CD34+ human cord blood cells. This allowed rapid AML1-ETO protein degradation upon addition of a proteolysis targeting chimera (PROTAC). Furthermore, by combining rapid degradation with nascent transcript analysis (PRO-seq), RNA-seq and Cut&Run, we have defined the core AML1-ETO regulatory network. De-repression of this small set of genes set off a cascade of transcriptional events resulting in myeloid differentiation.

2020-12-31 | GSE153279 | GEO

Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [ChIP-seq and CUT&RUN]

Project description:Transcription factors regulate gene networks controlling normal hematopoiesis and are frequently deregulated in acute myeloid leukemia (AML). Critical to our understanding of the mechanism of cellular transformation by oncogenic transcription factors is the ability to define their direct gene targets. However, gene network cascades can change within minutes to hours, making it difficult to distinguish direct from secondary or compensatory transcriptional changes by traditional methodologies. Utilizing CRISPR-based genome editing, we inserted a degron tag into the endogenous AML1-ETO locus of Kasumi-1 cells, as well as overexpressed a degradable AML1-ETO protein in CD34+ human cord blood cells. This allowed rapid AML1-ETO protein degradation upon addition of a proteolysis targeting chimera (PROTAC). Furthermore, by combining rapid degradation with nascent transcript analysis (PRO-seq), RNA-seq and Cut&Run, we have defined the core AML1-ETO regulatory network. De-repression of this small set of genes set off a cascade of transcriptional events resulting in myeloid differentiation.

2020-12-31 | GSE160242 | GEO

Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO

Project description:Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO

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Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [PRO-seq]

Project description:Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [PRO-seq]

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Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [RNA-seq]

Project description:Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [RNA-seq]

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Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [ChIP-seq, Cut&Run]

Project description:Definition of a Small Core Transcriptional Circuit Regulated by AML1-ETO [ChIP-seq, Cut&Run]