Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

41 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Oncogenic deregulation of EZH2 as an opportunity for targeted therapy in lung cancer [RNA-Seq]

ABSTRACT: As a master regulator of chromatin structure and function, the EZH2 lysine methyltransferase orchestrates transcriptional silencing of developmental gene networks. Overexpression of EZH2 is commonly observed in human epithelial cancers, such as non- small cell lung carcinoma (NSCLC), yet definitive demonstration of malignant transformation by deregulated EZH2 has proven elusive. Here, we demonstrate the causal role of EZH2 overexpression in NSCLC with a new genetically-engineered mouse model of lung adenocarcinoma. Deregulated EZH2 silences normal developmental pathways leading to epigenetic transformation independent from canonical growth factor pathway activation. As such, tumors feature a transcriptional program distinct from KRAS- and EGFR-mutant mouse lung cancers, but shared with human lung adenocarcinomas exhibiting high EZH2 expression. To target EZH2-dependent cancers, we developed a novel and potent EZH2 inhibitor that arises from a facile synthesis and possesses improved pharmacologic properties. JQEZ5 promoted the regression of EZH2-driven tumors in vivo, confirming oncogenic addiction to EZH2 in established tumors and providing the rationale for epigenetic therapy in a defined subset of lung cancer. Gene expression analysis of 7 samples, 3 EZH2 OE tumors, 2 EZH2 OE normal lung samples, and 2 WT lung samples

ORGANISM(S): Mus musculus

SUBMITTER: James Bradner

PROVIDER: E-GEOD-70046 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Oncogenic deregulation of EZH2 as an opportunity for targeted therapy in lung cancer [ChIP-Seq]

Project description:As a master regulator of chromatin structure and function, the EZH2 lysine methyltransferase orchestrates transcriptional silencing of developmental gene networks. Overexpression of EZH2 is commonly observed in human epithelial cancers, such as non- small cell lung carcinoma (NSCLC), yet definitive demonstration of malignant transformation by deregulated EZH2 has proven elusive. Here, we demonstrate the causal role of EZH2 overexpression in NSCLC with a new genetically-engineered mouse model of lung adenocarcinoma. Deregulated EZH2 silences normal developmental pathways leading to epigenetic transformation independent from canonical growth factor pathway activation. As such, tumors feature a transcriptional program distinct from KRAS- and EGFR-mutant mouse lung cancers, but shared with human lung adenocarcinomas exhibiting high EZH2 expression. To target EZH2-dependent cancers, we developed a novel and potent EZH2 inhibitor that arises from a facile synthesis and possesses improved pharmacologic properties. JQEZ5 promoted the regression of EZH2-driven tumors in vivo, confirming oncogenic addiction to EZH2 in established tumors and providing the rationale for epigenetic therapy in a defined subset of lung cancer. ChIP-Seq for H3K27ac and H3K27me3 in murine normal and EZH2 overexpressed tumor lung tissue

2015-11-01 | E-GEOD-70045 | biostudies-arrayexpress

Oncogenic deregulation of EZH2 as an opportunity for targeted therapy in lung cancer [ChIP-Seq]

2015-11-01 | GSE70045 | GEO

Oncogenic deregulation of EZH2 as an opportunity for targeted therapy in lung cancer [RNA-Seq]

2015-11-01 | GSE70046 | GEO

Transcriptomic heterogeneity of EGFR-mutant non-small cell lung cancer evolution towards small cell lung cancer

Project description:Histological transformation from epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC) to small cell lung cancer (SCLC) is the major resistance mechanism of EGFR tyrosine kinase inhibitors (TKIs). In our analysis of 59 regions of interest from EGFR-mutant NSCLC or combined SCLC/NSCLC tumors, we compared the transcriptomic profiles before and after transformation.

2024-07-30 | GSE259387 | GEO

human lung adenocarcinoma cell lines TMT based proteomics

Project description:In our study, we found that profilin 1 (PFN1) promoted non-small cell lung cancer (NSCLC) metastasis.For further investigate the mechanisms of PFN1's roles in NSCLC metastasis, we constructed PFN1 overxpression H1299 cell lines(H1299 PFN1 OE cells). And we sent samples of H1299 PFN1 OE cells and EV cells for TMT based quantative proteome profiling.

2022-04-14 | PXD033148 | Pride

Gene expression data from human NSCLC U1810 residual clones 9 days after a one-hour pulse treatment with cisplatin

Project description:Background: The platinum compounds cisplatin and carboplatin are the mainstay of chemotherapy for lung cancer; however, treatment failure remains a critical issue since about 60% of all non-small cell lung cancer (NSCLC) patients display intrinsic platinum resistance. Methods: We analyzed global gene expression profiles in NSCLC clones surviving a pulse treatment with cisplatin by microarray and mapped deregulated signaling networks in silico by Ingenuity Pathway Analysis (IPA). Results: Cisplatin-surviving NSCLC clones were demonstrated to have heterogeneous gene expression patterns both in terms of the number and the identity of the altered genes. Genes involved in Wnt signaling pathway (DKK1), DNA repair machinery (XRCC2) and cell-cell/ cell-matrix interaction (FMN1 and LGALS9) were among the top deregulated genes by microarray and were subsequently validated by q-RT-PCR. We focused on DKK1, which was previously reported to be overexpressed in NSCLC. IPA network analysis revealed coordinate up-regulation of several DKK1 transcriptional regulators (TCF4, EZH2, DNAJB6 and HDAC2) in cisplatin-surviving clones. Knockdown of DKK1 by siRNA sensitized untreated NSCLC cells to cisplatin, illustrating a putative role of DKK1 in intrinsic platinum resistance. Conclusions: Gene expression analysis identified DKK1 as a putative cisplatin resistance marker and a potential novel therapeutic target to overcome platinum resistance in NSCLC. U1810 cells were sparsely seeded for clonogenic survival assay in three separate experiments (replicate 1-3), left untreated or treated with cisplatin for 1 h and then kept for 9 days to assay long-term effects of a single pulse treatment.

2014-04-04 | E-GEOD-48244 | biostudies-arrayexpress

Selective Loss of RB in Resistant EGFR Mutant Lung Adenocarcinomas that Transform to SCLC [CGH]

Project description:The study was designed to identify the molecular changes that occur in EGFR mutant NSCLCs that become resistant to TKI by transforming to SCLC. Tyrosine kinase inhibitors (TKIs) are effective treatments for non-small cell lung cancers (NSCLCs) with epidermal growth factor receptor (EGFR) mutations. However, they do not lead to cures, and, on average, relapse occurs after one year of continuous treatment. In a subset of patients, a fundamental histological transformation from NSCLC to small cell lung cancer (SCLC) is observed in the resistant cancers, but the molecular changes associated with this transformation remain unknown. Analysis of a cohort of tumor samples and cell lines derived from resistant EGFR mutant patients with SCLC transformation revealed that RB is lost in 100% of these cases, but rarely in those that remain NSCLC. Global changes in gene expression, including increased neuroendocrine marker expression and absence of EGFR expression, are observed in cancers that transformed to SCLC. Consistent with their genetic and epigenetic similarities to classical SCLC, cell lines derived from resistant EGFR mutant SCLC biopsies are substantially more sensitive to ABT-263 treatment compared to those derived from resistant EGFR mutant NSCLCs. Together, these findings suggest that despite developing initially as EGFR mutant adenocarcinomas, this subset of resistant cancers ultimately take on many of the molecular and phenotypic characteristics of classical SCLC. Overall, we completed array CGH analysis on 4 tumor specimens from EGFR mutant, TKI-resistant patients. Three of these samples had transformed to SCLC and one remained NSCLC.

2015-01-30 | E-GEOD-64765 | biostudies-arrayexpress

Gene expression data from human NSCLC U1810 residual clones 9 days after a one-hour pulse treatment with cisplatin

2014-04-04 | GSE48244 | GEO

Transcriptional and Epigenomic profile of GSK126 or dox-mediated Ezh2 inhibition in KrasG12D/+;Trp53-/-;Ezh2i-GFP-2A-rTA;Luc lung tumors in vivo

Project description:We wanted to understand the consequences of GSK126-mediated Ezh2 inhibition in an orthotopic model of Kras-driven non-small cell lung cancer (NSCLC). We injected the NSCLC cells with above-mentioned genotype into Nude mice and treated them with GSK126 50mg/kg (daily) or vehicle. As additional control for Ezh2 specificity we treated one tumor with doxycycline that induces shRNA-mediated Ezh2 protein downregulation in those cells. Purified tumour cells were obtained by dissection and FACS sorting based of GFP expression. This experiment contributes the genome-wide response of NSCLC cells to Ezh2 inhibition in vivo.

2018-04-01 | GSE61125 | GEO

Integrative analysis of non-small cell lung cancer patient-derived xenografts identifies unique proteotypes associated with patient outcomes [WG-DASL]

Project description:Non-small cell lung cancer (NSCLC) death rates exceed the next 3 prevalent cancers combined; however, most NSCLC tumors lack actionable mutations. Recent studies of NSCLC and other cancers revealed profound proteome remodelling with prognostic impact that is not fully predicted by DNA or RNA analyses. These revelations portend proteome-based cancer classification and treatment. This will require model systems that recapitulate tumor proteomes and phenotypes. A subset (~35%) of the most aggressive NSCLC can form a patient-derived xenograft (PDX). We generated 137 PDX models of aggressive NSCLC, which represent the histological, genome, transcriptome, and DNA methylation features and proteome remodelling of primary NSCLC. The models indicate 3 lung adenocarcinoma and 2 squamous cell carcinoma proteotypes that are associated with different patient outcomes, protein-phosphotyrosine profiles, candidate targets, and in adenocarcinoma, distinct stromal immune features. The PDX resource will foster proteome-directed stratification and development of new treatments for aggressive NSCLC.

2021-11-23 | GSE166998 | 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