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Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy

ABSTRACT: Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy

PROVIDER: PRJNA636501 | ENA |

REPOSITORIES: ENA

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Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy [ChIP-seq]

Project description:Histone demethylases such as KDM4B play critical roles in oncogenic pathophysiology and, therefore may be effective targets for anticancer therapy. Using a TR-FRET demethylation screen assay, in combination with multiple orthogonal validation approaches, we identified geldanamycin and its analog 17-DMAG as novel KDM4B inhibitors. In addition, we found that these Hsp90 inhibitors effect increased degradation of the alveolar rhabdomyosarcoma (aRMS) driver oncoprotein PAX3-FOXO1 and induce the H3K9me3 and H3K36me3 at genomic loci of PAX3-FOXO1 targets. We found that as monotherapy 17-DMAG significantly inhibits expression of PAX3-FOXO1 target genes and multiple oncogenic pathways, induces a muscle differentiation signature, delays tumor growth and extends survival in aRMS xenograft mouse models. The combination of 17-DMAG with conventional chemotherapy significantly enhances therapeutic efficacy, indicating that targeting KDM4B in combination with chemotherapy may serve as a novel therapy to PAX3-FOXO1-positive aRMS.

2020-12-22 | GSE151493 | GEO

Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy [RNA-seq]

Project description:Histone lysine demethylases (KDMs) are emerging as therapeutic targets in cancer. Development of potent KDM inhibitors may provide additional options for epigenomics-oriented therapies. Using a Time-Resolved Fluorescence Resonance Energy Transfer (TR-FRET) functional demethylation assay, in combination with a high-content immunofluorescence imaging phenotypic screen, Matrix-Assisted Laser Desorption/Ionization- Fourier Transform Ion Cyclotron Resonance mass spectrometry (MALDI-FTICR MS) and Amplified Luminescent Proximity Homogeneous Assay (ALPHA), we identified geldanamycin, an inhibitor of heat shock protein 90 (Hsp90), as a novel inhibitor of JmjC-domain containing demethylases such as KDM4B. We further found that geldanamycin can destabilize the PAX3-FOXO1 fusion oncoprotein, an Hsp90 client, which is a driver of clinically unfavorable alveolar rhabdomyosarcoma (aRMS). We then hypothesized that dual inhibition of PAX3-FOXO1 and epigenetic modifiers of aRMS would have synergistic antitumor activity. We repurposed the geldanamycin analog 17-DMAG to target aRMS and found that 17-DMAG significantly delays tumor growth , extends survival in xenograft mouse models, and inhibits expression of PAX3-FOXO1 targets and multiple oncogenic pathways including MYC, E2F and NOTCH. In addition, the combination of 17-DMAG with conventional chemotherapy or the bromodomain inhibitor JQ1 significantly enhances therapeutic efficacy. In summary, we have identified geldanamycin and 17-DMAG as dual KDM/Hsp90 inhibitors and 17-DMAG is efficacious against PAX3-FOXO1-driven rhabdomyosarcoma.

2020-12-21 | GSE151514 | GEO

Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy [RNA-seq]

Project description:Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy [RNA-seq]

| PRJNA636180 | ENA

Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy [ChIP-seq]

Project description:Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy [ChIP-seq]

| PRJNA635950 | ENA

17-Dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG) in Treating Patients With an Advanced Solid Tumor or Lymphoma

Project description:RATIONALE: Drugs used in chemotherapy, such as 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG), work in different ways to stop cancer cells from dividing so they stop growing or die. PURPOSE: This phase I trial is studying the side effects and best dose of 17-DMAG in treating patients with an advanced solid tumor or lymphoma.

| 2011214 | ecrin-mdr-crc

Identification of 17-DMAG as a novel KDM4B inhibitor for combination therapy

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

2020-12-22 | GSE151598 | GEO

17-DMAG treatment in primary CLL B cells

Project description:We used microarrays to analyze gene expression following treatment of leukemic B cells with the Hsp90 inhibitor 17-DMAG. Gene expression profiling reveals the role of SOCS3 in cytokine signaling in CLL Primary cells from CLL patients were isolated and treated in vitro with 17-DMAG. Cells were collected for viability, gene expression analysis and cell signaling and migration assays.

2016-07-01 | E-GEOD-76546 | biostudies-arrayexpress

17-DMAG treatment in primary CLL B cells

2016-07-01 | GSE76546 | GEO

Expression analysis of blastocysts in Kdm4b-PEs

Project description:To identify the genes that are controled by H3K9me3 modification in PEs, we conducted transcriptome analysis using Egfp-, Kdm4b-PEs, and IVF embryos at blastocyst stages. Kdm4b or Egfp mRNA injected oocytes were parthenogenetically activated. IVF embryos were generated according to standard protcol. All embryos were cultured in KSOM medium for 120 hours after activation or sperm insemination. Five blastocysts per one biological replicate were pooled and analyzed.

2014-11-15 | E-GEOD-53662 | biostudies-arrayexpress

KDM4B- and KDM6B-regulated genes in human mesenchymal stem cell osteogenic differentiation

Project description:To investigate how histone demethylases KDM4B and KDM6B may be involved in osteogenic commitment of mesenchymal stem cells (MSCs), we performed gene expression profiling and comparison on control, KDM4B- and KDM6B-knockdown MSCs at different stages of osteogenic differentiation. Human MSCs infected with scramble shRNAs, shRNAs against KDM4B or KDM6B are treated with BMP4/7 for 0, 4 and 24hrs. Total RNA were extracted from these 9 samples.

2012-07-31 | E-GEOD-36970 | biostudies-arrayexpress

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