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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of human melanoma LOX cells to investigate the effect of Seprase/FAP alpha on metastatis

ABSTRACT: In order to detect the molecular mechanism of seprase involved in tumor metastasis, a comparison of gene expression pattern was made between two groups of human melanoma LOX cell sublines, one is transfected with mock vector expressing GFP only (GUS-1, GUS-2 and GUS-3) and the other with pGUS expressing GFP and siRNA targeting mRNA of seprase/FAP alpha (sep-1, sep-2 and sep-3).

ORGANISM(S): Homo sapiens

SUBMITTER: Wei Zeng

PROVIDER: E-GEOD-1773 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Effect of Seprase/FAP alpha on the metastasis of human melanoma LOX cell

Project description:In order to detect the molecular mechanism of seprase involved in tumor metastasis, a comparison of gene expression pattern was made between two groups of human melanoma LOX cell sublines, one is transfected with mock vector expressing GFP only (GUS-1<GSM30738>, GUS-2<GSM30729> and GUS-3<GSM30730>) and the other with pGUS expressing GFP and siRNA targeting mRNA of seprase/FAP alpha (sep-1<GSM30731>, sep-2<GSM30732> and sep-3<GSM30740>). Keywords: other

2008-09-01 | GSE1773 | GEO

LOX-1-dependent transcriptional regulation after oxidized LDL (OxLDL) treatment of human aortic endothelial cells.

Project description:LOX-1 is the primary endothelial receptor for oxidized LDL in endothelial cells and plays a role in the development of atherosclerosis. Expression profiling was carried out on samples from HAECT cells over-expressing either LOX-1 or GFP control and treated with or without OxLDL over a time course of 2, 6, 12 and 24 Hours. The goal of the study was to identify genes expression changes activated by OxLDL binding to LOX-1 at several different time points.

2009-10-07 | GSE13139 | GEO

Molecular Targeting of 15-Lipoxygenase-1 (15-LOX-1) for Apoptosis Induction in Human Colorectal Cancers

Project description:Primary Objective: * To determine whether celecoxib downregulates GATA-6 expression to upregulate 15-LOX-1 expression and induce apoptosis in human rectal tumors, researchers will measure GATA-6 and 15-LOX-1 expression, 13-S-HODE levels, and apoptosis rates in normal and colorectal polyp epithelial tissues before and after 6 months of celecoxib treatment of patients with familial adenomatous polyposis (FAP).

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Effect of LOX-PP on the gene expression profile of the A673 cell line (Ewing sarcoma)

Project description:In this study we show that lysyl oxidase (LOX), an enzyme involved in maintaining structural integrity of the extracellular matrix, is expressed at low levels in Ewing sarcoma cells and primary tumors and is downregulated by the EWS/FLI1 oncoprotein characteristic of these tumors. Using a doxycycline inducible system to restore LOX expression in an Ewing sarcoma derived cell line, we show that LOX displays tumor suppressor activities. Interestingly, we show that the tumor suppressor activity resides in the propeptide domain of LOX (LOX-PP), an N-terminal domain produced by proteolytic cleavage during the physiological processing of LOX. Finally, we show that LOX-PP inhibits ERK/MAPK signalling pathway, and that many pathways involved in cell cycle progression were significant deregulated by LOX-PP, providing a mechanistic explanation to the cell proliferation inhibition observed upon LOX-PP expression. In summary, our observations indicate that deregulation of the LOX gene participates in Ewing sarcoma development and identify LOX-PP as a new therapeutic target for one of the most aggressive paediatric malignancies. These findings suggest that therapeutic strategies based in the administration of LOX propeptide or functional analogues could be useful in the treatment of this devastating paediatric cancer. A673 cells derived from Ewing sarcoma were genetically enginereed to express LOX-PP upon doxycycline stimulation (72 hours). Three independent experiments from control cells and three independent experiments from A673 cells expressing LOX-PP were done. Gene expression profile in A673 cells expressing LOX-PP vs control cells were compared.

2013-12-31 | E-GEOD-46407 | biostudies-arrayexpress

Expression data from E11.5 mouse branchial arch 1 (BA1) - comparison between Ezh2lox/lox and Wnt1Cre Ezh2lox/lox embryos

Project description:Conditional ablation of Ezh2 in the neural crest lineage results in loss of the neural crest-derived mesenchymal derivatives. In this data sheet we determine gene expression analysis in Ezh2lox/lox and Wnt1Cre Ezh2lox/lox in E11.5 mouse BA1 cells. Conditional ablation of Ezh2 in the neural crest lineage was achieved by crossing Wnt1creEzh2lox/wt mice with Ezh2lox/lox mouse lines. We analyzed a total of 6 samples including 3 biological replicates from Ezh2lox/lox embryos and 3 biological replicates from Wnt1cre Ezh2lox/lox embryos.

2013-11-09 | E-GEOD-52220 | biostudies-arrayexpress

Expression data from E11.5 mouse branchial arch 1 (BA1) - comparison between Ezh2lox/lox and Wnt1Cre Ezh2lox/lox embryos

2013-11-09 | GSE52220 | GEO

Effect of LOX-PP on the gene expression profile of the A673 cell line (Ewing sarcoma)

2013-12-31 | GSE46407 | GEO

Next Generation Sequencing of β-cat lox(ex3) (Ctrl) mouse and β-cat lox(ex3);Nex-Cre (β-cat overexpression, β-cat Ovp) mouse Transcriptomes

Project description:Using RNA-seq to sequence the transcriptomes of β-cat lox(ex3) (Ctrl) and β-cat lox(ex3);Nex-Cre (β-cat Ovp) mice, we did not find significant change in the expression level of classical Wnt target genes.

2017-09-02 | GSE95629 | GEO

Transcriptome analysis of Y79 retinoblastoma cells upon Lysyl oxidase propeptide (LOX-PP) overexpression

Project description:Lysyl oxidase (LOX) is an copper dependent amine oxidase enzyme involved in cross linking of collagens and elastins. Lysyl oxidase propeptide (LOX-PP) is 18 kDa region cleaved during maturation of LOX and its anti-tumorigenic role were studied in various cancers. The effect of LOX-PP overexpression in retinoblastoma cancer cells (Y79) using transient transfection of LOX-PP gene accessed for global gene deregulations. The analysis resulted in RB cancer cell death through deregulation of retinoblastoma in cancer, cell cycle, apoptosis, focal adhesion-PI3K-AKT signaling and DNA repair mechanism pathway. Further validations were done using RT-PCR and western blot analysis. Our results provide evidence that inducing apoptosis through AKT-NFκB signaling.

2019-09-01 | GSE119413 | GEO

Roles of LOX and LOXL1 on the transcriptome of hepatic stellate cells

Project description:Our previous studies have found that LOX and LOXL1 were highly upregulated in advanced liver fibrosis; herein, we aimed to investigate the roles of LOX and LOXL1 in hepatic stellate cells.

2021-12-01 | GSE155651 | GEO

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