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Jumonji Demethylase Inhibitor GSK-J4 treated Multiple Myeloma JJN3 and RPMI

ABSTRACT: Analysis of Multiple Myeloma Cell lines JJN-3 and RPMI gene expression following treated with GSK-J4 or Bortezomib

ORGANISM(S): Homo sapiens

PROVIDER: GSE60600 | GEO | 2016/08/21

SECONDARY ACCESSION(S): PRJNA258634

REPOSITORIES: GEO

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Jumonji Demethylase Inhibitor GSK-J4 treated Multiple Myeloma JJN3 and RPMI

Project description:Analysis of Multiple Myeloma Cell lines JJN-3 and RPMI gene expression following treated with GSK-J4 or Bortezomib Total RNA extracted from cells after 6 or 24 hour treatment with either GSK-J4, GSK-J5, Bortezomib or vehicle

2016-08-21 | E-GEOD-60600 | biostudies-arrayexpress

A novel synthetic jumonji H3K27 demethylase inhibitor GSK-J4 exert immunosuppressive activities

Project description:Using RNA-seq, we report that jumonji H3K27 demethylase inhibitor, GSK-J4, exerts potent anti-inflammatory effects on LPS-stimulated BV-2 microglial cells.

2016-09-09 | GSE79898 | GEO

KDM6 histone demethylase inhibitor GSK-J4 induces metal and stress responses in multiple myeloma cells [GSK-J4]

Project description:Thioneins are cysteine-rich, evolutionary conserved apoproteins that regulate divalent metal homeostasis by virtue of their metal-chelation properties resulting in the ligand-bound metallothionein state. Previous studies have demonstrated a transient upregulation (102- 103-fold) of a cluster of metallothionein genes as part of a transcriptional response to a class of histone demethylase tool compounds targeting human Fe2+ dependent ketoglutarate oxygenases KDM6A (UTX) and KDM6B (JmjD3). Exposure of multiple myeloma cells to the prototypic bioactive KDM6 inhibitor GSK-J4 induces apoptotic cell death and transcriptomic profiles that are dominated by metal and metabolic stress response signatures. We here investigate the hypothesis that the metal-chelating property of GSK-J4 provides the means for transport and intracellular release of Zn2+ leading to a metallothionein transcriptomic response signature. Live cell imaging upon myeloma cell exposure to GSK-J4 shows a transient increase of intracellular free Zn2+ concentrations upon KDM6 inhibitor treatment consistent with a model of inhibitor mediated metal transport. Comparison of KDM6 inhibitor and ZnSO4 treatments in the presence or absence of metal chelators show that both treatment conditions induce different transcription factor repertoires with an overlapping MTF1 transcriptional regulation responsible for metallothionein and metal ion transport regulation.

2022-09-16 | GSE213291 | GEO

RNA-seq of GSK-J4 Treated Neuroblastoma Cell Lines

Project description:High-risk neuroblastoma is often distinguished by amplification of MYCN and loss of differentiation potential with tumors refractory to retinoic acid differentiation based therapies. Here, we leverage high-throughput drug screening of epigenetic targeted therapies across a large and diverse tumor cell line panel to uncover the hypersensitivity of neuroblastoma cells to GSK-J4, a small molecule dual inhibitor of H3K27 demethylases UTX and JMJD3. Mechanistically, GSK-J4 induced neuroblastoma differentiation and ER stress with accompanying upregulation of PUMA and apoptosis induction. Retinoic acid (RA)-resistant neuroblastoma cells were sensitive to GSK-J4. Additionally, GSK-J4 was effective at blocking the growth of chemorefractory and patient-derived xenograft models of high-risk neuroblastoma in vivo. Further, GSK-J4 and RA combined to induce differentiation, ER-stress and limit the growth of neuroblastomas resistant to either drug alone. In MYCN-amplified neuroblastoma, which is the most prevalent driver gene alteration in the refractory population, PUMA induction by GSK-J4 sensitized tumors to the BCL-2 inhibitor venetoclax, demonstrating that epigenetic targeted therapies and BH3 mimetics can be rationally combined to treat high-risk subset of neuroblastoma. Therefore, H3K27 demethylation inhibition is a promising therapeutic target to treat high-risk neuroblastoma, and H3K27 demethylation can be part of rational combination therapies to induce robust anti-neuroblastoma activity.

2018-02-17 | GSE110709 | GEO

Genome-wide RNA-seq from GSK-J4-treated lung adenocarcinoma cell lines

Project description:Purpose: The goals of our study were to identify downstream pathway regulated by GSK-J4 in lung adenocarcinoma Methods: RNAs isolated from GSK-J4-treated or untreated lung adenocarcinoma (HCC827, H23 and A549) were analyzed by using an Illumina Nextseq500 Conclusions: Our study represents the first detailed transcriptomic analysis of effects of GSK-J4 in lung adenocarcinoma.

2021-08-08 | GSE118319 | GEO

KDM6 histone demethylase inhibitor GSK-J4 induces metal and stress responses in multiple myeloma cells [ZNSO]

2022-09-16 | GSE213292 | GEO

KDM6 histone demethylase inhibitor GSK-J4 induces metal and stress responses in multiple myeloma cells [GSK-J4]

Project description:KDM6 histone demethylase inhibitor GSK-J4 induces metal and stress responses in multiple myeloma cells [GSK-J4]

| PRJNA880344 | ENA

Genome-wide ChIP-Seq from GSK-J4 or siKDM6B-treated lung adenocarcinoma cell line A549

Project description:Purpose: The goals of our study were to identify downstream pathway regulated by GSK-J4 in lung adenocarcinoma Methods: Chromatin isolated from GSK-J4- or siKDM6B-treated lung adenocarcinoma with proper controls was used to generate ChIP-Seq libraries

2021-08-08 | GSE133967 | GEO

Expression data from neuroblastoma cells treated with GSK-J4 or KTP-330

Project description:Neuroblastoma (NB) is a common pediatric malignancy tumor with poor outcome. Recent studies show that GSK-J4, an inhibitor of lysine 27 of histone 3 (H3K27) demethylases, and KTP-330, a clinically available inhibitor of XPO1 protein, are promising anti-cancer agents. However, their molecular mechanisms in neuroblastoma are still unclear. In this study, we used microarrays to analyze the global change in gene expression as a result of GSK-J4 or KTP-330 treatment in the human neuroblastoma cell line SH-SY5Y.

2022-01-22 | GSE180601 | GEO

GSK-J4 and suppression of the H3K27 demethylase UTX specifically activates expression of ATF4 and its target genes independently of PERK-eIF2α phosphorylation

Project description:UTX/KDM6A encodes a major histone H3 lysine 27 (H3K27) demethylase which is frequently mutated in various types of cancers. Although UTX appears to play a crucial role in cancer, its mechanisms remain poorly understood. Here we found that a specific pharmacological inhibitor of H3K27 demethylases, GSK-J4, induces expression of the ATF4 (transcription activating factor 4) protein and its downstream target genes (e.g. PCK2, CHOP, REDD1, CHAC1 and TRIB3), and activates autophagy-related gene products (LC3A, LC3B and ATG5-ATG12). ATF4 induction by GSK-J4 did not entail either ATF6α processing or an increase of PERK and eIF2α serine 51 phosphorylation, indicating that this action is not triggered by canonical endoplasmic reticulum (ER) stress. No changes in expression levels of the endogenous ATF4 mRNA and exogenously expressed ATF4 proteins driven by the CMV promoter were detected, suggesting that the induction is not due to either transcriptional or post-translational regulation of ATF4. Although GSK-J4 efficiently induces apoptosis, it is unlikely that the induction is due to activation of the ATF4-CHOP axis. By using gene expression profiling experiments in conjunction with CRISPR editing and stable re-expression of UTX, we found that UTX specifically suppresses expression of ATF4 target genes. These findings highlight not only that GSK-J4, which has been considered an anti-cancer drug, is a strong inducer of ATF4, but also that UTX is an important component of this regulation and may contribute to oncogenesis via ATF4 regulation.

2019-12-31 | GSE127860 | GEO

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