Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

DUX4-r neomorphic activity depending on GTF2I in acute lymphoblastic leukemia [CUT&Tag]

ABSTRACT: Translocations producing rearranged versions of the transcription factor DUX4 (DUX4-r) are one of the most frequent causes of B-cell acute lymphoblastic leukemia (B-ALL). DUX4-r retains the DNA binding domain of wt DUX4, but is truncated on the C-terminal transcription activation domain. The precise mechanism through which DUX4-r causes leukemia is unknown and no targeted therapy is currently available. We found that the rearrangement leads to both a loss and a gain of function in DUX4-r. Loss of CBP/EP300 transcriptional co-activators interaction and inability to bind and activate repressed chromatin. Gain of interaction with the transcription factor GTF2I, which redirects DUX4-r toward leukemogenic targets. Importantly, this neomorphic activity exposes an Achilles' heel whereby DUX4-r positive leukemia cells are exquisitely sensitive to GTF2I targeting, which inhibits DUX4-r leukemogenic activity. Our work elucidates the molecular mechanism through which DUX4-r causes leukemia and suggest a possible therapeutic avenue tailored to this B-ALL subtype.

ORGANISM(S): Homo sapiens

PROVIDER: GSE228473 | GEO | 2023/09/15

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

DUX4-r exerts a neomorphic activity that depens on GTF2I in acute lymphoblastic leukemia

Project description:Translocations producing rearranged versions of the transcription factor DUX4 (DUX4-r) are one of the most frequent causes of B-cell acute lymphoblastic leukemia (B-ALL). DUX4-r retains the DNA binding domain of wt DUX4, but is truncated on the C-terminal transcription activation domain. The precise mechanism through which DUX4-r causes leukemia is unknown and no targeted therapy is currently available. We found that the rearrangement leads to both a loss and a gain of function in DUX4-r. Loss of CBP/EP300 transcriptional co-activators interaction and inability to bind and activate repressed chromatin. Gain of interaction with the transcription factor GTF2I, which redirects DUX4-r toward leukemogenic targets. Importantly, this neomorphic activity exposes an Achilles' heel whereby DUX4-r positive leukemia cells are exquisitely sensitive to GTF2I targeting, which inhibits DUX4-r leukemogenic activity. Our work elucidates the molecular mechanism through which DUX4-r causes leukemia and suggest a possible therapeutic avenue tailored to this B-ALL subtype.

2023-09-16 | PXD041273 | Pride

DUX4-r neomorphic activity depending on GTF2I in acute lymphoblastic leukemia [RNA-seq]

2023-09-15 | GSE227982 | GEO

DUX4-r neomorphic activity depending on GTF2I in acute lymphoblastic leukemia [RNA-seq]

Project description:DUX4-r neomorphic activity depending on GTF2I in acute lymphoblastic leukemia [RNA-seq]

| PRJNA947621 | ENA

DUX4-r neomorphic activity depending on GTF2I in acute lymphoblastic leukemia [CUT&Tag]

Project description:DUX4-r neomorphic activity depending on GTF2I in acute lymphoblastic leukemia [CUT&Tag]

| PRJNA950006 | ENA

DUX4-r exerts a neomorphic activity that depends on GTF2I in acute lymphoblastic leukemia

Project description:DUX4-r exerts a neomorphic activity that depends on GTF2I in acute lymphoblastic leukemia

| PRJNA949995 | ENA

A Knock-in Mouse Model of Thymoma with the GTF2I L424H Mutation

Project description:We previously identified a recurrent mutation L424H in the transcription factor GTF2I in thymic epithelial tumors. The precise role of the GTF2I mutation in these tumors is unclear. Here we describe the generation and characterization of a mouse model in which the Gtf2i L424H mutation was conditionally knocked-in in the Foxn1+ thymic epithelial cells. The Gtf2i mutation impairs development of thymic medulla and maturation of medullary thymic epithelial cells in the young mice and causes tumor formation in the thymus of the aged KI mice. To characterize the molecular features of murine thymomas, we performed digital spatial profiling with GeoMx moue whole transcriptome atlas assay with FFPE thymic tissues of 4 KI and 4 control mice.

2023-01-25 | GSE200784 | GEO

GTF2I dosage regulates neuronal differentiation and social behavior in 7q11.23 neurodevelopmental disorders

Project description:Copy number variations at 7q11.23 cause neurodevelopmental disorders with shared and opposite manifestations. Deletion leads to Williams-Beuren syndrome (WBS), while duplication causes 7q11.23 microduplication syndrome (7Dup). Converging evidence indicates GTF2I, from the 7q11.23 locus, is a key mediator of the cognitive-behavioral phenotypes associated with WBS and 7Dup. Here we integrate molecular profiling of patient-derived cortical organoids (COs) and transgenic mouse models to dissect 7q11.23 disease mechanisms. Proteomic and transcriptomic profiling of COs revealed opposite dynamics of neural progenitor proliferation and transcriptional imbalances, leading to precocious excitatory neuron production in 7Dup. The accelerated excitatory neuron production in 7Dup COs could be rescued by GTF2I knockdown. Transgenic mice with Gtf2i duplication recapitulated early neuronal differentiation defects and ASD-like behaviors. Remarkably, inhibition of LSD1, a downstream effector of GTF2I, was sufficient to rescue ASD-like phenotypes. We propose that the GTF2I-LSD1 axis constitutes a molecular pathway amenable to therapeutic intervention.

2024-01-26 | PXD036770 | Pride

Murine Adult Cortex: Gtf2i (+/Δex2 ) VS WT (+/+)

Project description:Transcriptional profiling of mouse cortex tissue comparing control animals with Gtf2i-mutated mouse (Gtf2i+/Δex2 ). Goal was to determine the specific deregulated genes in the cortex of mutated animals.

2014-10-20 | GSE41251 | GEO

Expression data from GTF2i mutated ES cells

Project description:Data present the expression analysis of different mouse ES cell line with altered expression of GTF2I. We used microarrays to detail the global programme of gene expression underlying altered expression of GTF2I and identified distinct classes of deregulated genes

2013-07-12 | E-GEOD-48790 | biostudies-arrayexpress

Mutant GTF2I induces cell transformation and metabolic alterations in thymic epithelial cells

Project description:The pathogenesis of thymic epithelial tumors (TETs) is poorly understood. Recently we reported the frequent occurrence of a missense mutation in the GTF2I gene in TETs and hypothesized that GTF2I mutation might contribute to thymic tumorigenesis. Expression of mutant TFII-I altered the transcriptome of normal thymic epithelial cells and upregulated several oncogenic genes. Gtf2i L424H knockin cells exhibited cell transformation, aneuploidy, and increase tumor growth and survival under glucose deprivation or DNA damage. Gtf2i mutation also increased the expression of several glycolytic enzymes, cyclooxygenase-2, and caused modifications of lipid metabolism. Elevated cyclooxygenase-2 expression by Gtf2i mutation was required for survival under metabolic stress and cellular transformation of thymic epithelial cells. Our findings identify GTF2I mutation as a new oncogenic driver that is responsible for transformation of thymic epithelial cells.

2022-03-02 | GSE127909 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data