GEO DataSets

(Submitter supplied) Histone H3 lysine 27 to methionine mutations (H3K27M) resulting in aberrant chromatin regulation are frequently observed in Diffuse Intrinsic Pontine Glioma (DIPG), a pediatric brain tumor with no cure. We conducted a CRISPR screen to determine if various chromatin regulators might be targeted to treat DIPG. Excitingly, this genetic screen reveals that co-targeting lysine specific demethylase 1 (LSD1) and histone deacetylases (HDACs) results in an enhanced growth suppressive effect in patient DIPG cells. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL16791

18 Samples

Download data: BED, BIGWIG

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL16791

30 Samples

Download data: BED, BIGWIG, TXT

(Submitter supplied) Histone H3 lysine 27 to methionine mutations (H3K27M) resulting in aberrant chromatin regulation are frequently observed in Diffuse Intrinsic Pontine Glioma (DIPG), a pediatric brain tumor with no cure. We conducted a CRISPR screen to determine if various chromatin regulators might be targeted to treat DIPG. Excitingly, this genetic screen reveals that co-targeting lysine specific demethylase 1 (LSD1) and histone deacetylases (HDACs) results in an enhanced growth suppressive effect in patient DIPG cells. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

12 Samples

Download data: TXT

(Submitter supplied) Diffuse intrinsic pontine gliomas (DIPG) are characterized by a heterozygous lysine-to-methionine mutation of histone H3 (H3K27M) that potently reduces Polycomb Repressive Complex 2 (PRC2) methylation of wild-type histone H3K27 (H3K27wt). The role of H3K27M and reduced H3K27wt methylation in DIPG pathogenesis has yet to be determined. Here, we have performed epigenomic profiling of patient-derived H3K27M mutant DIPG cells and demonstrate that H3K27M resides in nucleosomes with H3K27wt acetylation (H3K27ac), and H3K27M-H3K27ac containing nucleosomes co-localize with bromodomain proteins at actively transcribed genes and that PRC2 is excluded from H3K27M occupied regions. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL18573

100 Samples

Download data: BW

(Submitter supplied) Xenografts from human pediatric brainstem gliomas bearing K27M in H3F3A were transduced with non silencing or H3F3A shRNA to assess the impact of the K27M on tumor growth, gene expression and epigenetics

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL16791 GPL20301

130 Samples

Download data: BED, BW, NARROWPEAK

(Submitter supplied) xenografts from human pediatric brainstem gliomas bearing K27M in H3F3A were transduced with non silencing or H3F3A shRNA to assess the impact of the K27M on tumor growth, gene expression and epigenetics

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL16791 GPL20301

50 Samples

Download data: TXT

(Submitter supplied) Xenografts from human pediatric brainstem gliomas bearing K27M in H3F3A were transduced with non silencing or H3F3A shRNA to assess the impact of the K27M on tumor growth, gene expression and epigenetics

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL16791 GPL20301

80 Samples

Download data: BED, BW, NARROWPEAK

(Submitter supplied) Diffuse intrinsic pontine glioma (DIPG) is a fatal pediatric brain tumor with limited therapeutic options. The majority of cases of DIPG exhibit a mutation in histone 3 (H3K27M) that results in oncogenic transcriptional aberrancies. We show here that DIPG is vulnerable to transcriptional disruption using either bromodomain inhibition or CDK7 blockade. We observe that targeting oncogenic transcription through either of these methods synergizes with HDAC inhibition and that DIPG cells resistant to HDAC inhibitor therapy retain sensitivity to CDK7 blockade. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL18573 GPL20301

26 Samples

Download data: BW, TXT

(Submitter supplied) Diffuse intrinsic pontine glioma (DIPG) is an aggressive and incurable childhood brain tumor for which new treatments are needed. A high throughput drug screen of 3600 pharmaceutical compounds found that anti-malarials, including quinacrine had potent activity against DIPG neurospheres. CBL0137 is a novel anti-cancer compound developed from quinacrine, which targets Facilitates Chromatin Transcription (FACT), a chromatin remodelling complex involved in transcription, replication, and DNA repair. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL28835

6 Samples

Download data: CEL

(Submitter supplied) Diffuse intrinsic pontine glioma (DIPG) is an aggressive and incurable childhood brain tumor for which new treatments are needed. A high throughput drug screen of 3600 pharmaceutical compounds found that anti-malarials, including quinacrine had potent activity against DIPG neurospheres. CBL0137 is a novel anti-cancer compound developed from quinacrine, which targets Facilitates Chromatin Transcription (FACT), a chromatin remodelling complex involved in transcription, replication, and DNA repair. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL28782

12 Samples

Download data: CEL

(Submitter supplied) Diffuse intrinsic pontine glioma (DIPG) is a rare and fatal pediatric brain cancer without cure. DIPG has high percentage histone mutation at K27M on histone H3 locus, which is believed to be one of the drivers of the tumorigenesis. Dysregulation of G1/S cell cycle checkpoint is more enriched in the H3.3K27M mutant subgroup. In this study, we reported that palbociclib (PD0332991), a specific and cytostatic inhibitor of CDK4/6, effectively suppresses the growth of DIPG cells in vitro and in vivo. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20795

4 Samples

Download data: FPKM_TRACKING

(Submitter supplied) We performed gene expression microarray to examine the potential effect that depletion of HDAC5 (an important HDAC isozyme) or LSD1 (an FAD-dependent histone lysine demethylase) has on the triple-negative breast cancer transcriptome.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL571

12 Samples

Download data: CEL

(Submitter supplied) Abnormal activities of histone lysine demethylases (KDMs) and lysine deacetylases (HDACs) are associated with aberrant gene expression in breast cancer development. However, the precise molecular mechanisms underlying the crosstalk between KDMs and HDACs in chromatin remodeling and regulation of gene transcription are still elusive. In this study, we showed that treatment of human breast cancer cells with inhibitors targeting the zinc cofactor dependent class I/II HDACs, but not NAD+ dependent class III HDACs, led to significant increase of H3K4me2 which is a specific substrate of histone lysine-specific demethylase 1 (LSD1) and a key chromatin mark promoting transcriptional activation. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL571

12 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL16791 GPL17021

38 Samples

Download data: BED, BW

(Submitter supplied) Diffuse intrinsic pontine glioma (DIPG) is a highly aggressive brain tumour that is located in the pons and primarily affects children. Whole-exome sequencing studies have identified recurrent driver mutations in H3F3A and HIST1H3B, leading to the expression of histone H3 in which lysine 27 is substituted with methionine (H3K27M) in nearly 80% of DIPGs. H3K27M inhibits Polycomb Repressive Complex 2 (PRC2) activity by binding to its catalytic subunit EZH2 and although DIPGs with H3K27M mutation show global loss of H3 with trimethylated lysine 27 (H3K27me3), several genomic loci are still H3K27me3 positive. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

8 Samples

Download data: BW

(Submitter supplied) Diffuse intrinsic pontine glioma (DIPG) is a highly aggressive brain tumour that is located in the pons and primarily affects children. Whole-exome sequencing studies have identified recurrent driver mutations in H3F3A and HIST1H3B, leading to the expression of histone H3 in which lysine 27 is substituted with methionine (H3K27M) in nearly 80% of DIPGs. H3K27M has been shown to inhibit Polycomb Repressive Complex 2 (PRC2) activity by binding to its catalytic subunit EZH2, and although DIPGs with H3K27M mutation show global loss of H3 with trimethylated lysine 27 (H3K27me3), several genes retain H3K27me3. more...

Organism:

Homo sapiens; Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL13112 GPL11154

13 Samples

Download data: BW, TXT

(Submitter supplied) Using the RCAS/tv-a system, we induced murine brainstem gliomas (PDGF-B; p53 loss using RCAS-Cre with and without H3.3K27M) in Nestin tv-a; p53 floxed mice

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9185

6 Samples

Download data: XLSX

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL17021 GPL21103

100 Samples

Download data: BED, BW, NARROWPEAK

(Submitter supplied) A mouse knock-in model engineered for Cre recombinase-activated expression of the endogenous mouse H3f3a allele generating an epitope-tagged H3.3 equipped with or without a K27M mutation to investigate H3.3 K27M effects on brain cell and tumor growth, gene expression and epigenetics.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL17021 GPL21103

41 Samples

Download data: TXT

(Submitter supplied) A mouse knock-in model engineered for Cre recombinase-activated expression of the endogenous mouse H3f3a allele generating an epitope-tagged H3.3 equipped with or without a K27M mutation to investigate H3.3 K27M effects on brain cell and tumor growth, gene expression and epigenetics.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17021

59 Samples

Download data: BED, BW, NARROWPEAK