Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Gene expression profile of Hodgkin’s lymphoma cells after knock-down of PRAME

ABSTRACT: By using high-density DNA microarrays, we analyzed the gene-expression profile of Hodgkin's lymphoma cell line L-428 after knock-down of the tumor antigen PRAME (preferentially expressed antigen in melanoma) Kewitz and Staege, submitted RNA was extracted from established Hodgkin's lymphoma cell line L-540 and hybridized with Affymetrix HG_U133A microarrays.

ORGANISM(S): Homo sapiens

SUBMITTER: Martin Staege

PROVIDER: E-GEOD-40988 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Gene expression profile of Hodgkin’s lymphoma cells after knock-down of DUSP5

Project description:By using high-density DNA microarrays, we analyzed the gene-expression profile of Hodgkin's lymphoma cell line L-428 after knock-down of DUSP5 (dual specificity phosphatase 5) RNA was extracted from established Hodgkin's lymphoma cell line L-428 and hybridized with Affymetrix HG_U133A microarrays.

2014-07-01 | E-GEOD-52831 | biostudies-arrayexpress

Gene expression profile of Hodgkin’s lymphoma cells after knock-down of PRAME

Project description:By using high-density DNA microarrays, we analyzed the gene-expression profile of Hodgkin's lymphoma cell line L-428 after knock-down of the tumor antigen PRAME (preferentially expressed antigen in melanoma) Kewitz and Staege, submitted

2012-12-21 | GSE40988 | GEO

Genome-wide analyses in neuronal cells reveal that USF transcription factors regulate lysosomal gene expression [Expression analysis]

Project description:The upstream stimulating factors (USFs) USF1 and USF2 are ubiquitously expressed transcription factors characterized by a conserved basic helix-loop-helix leucine zipper DNA-binding domain. They form homo- or heterodimers and recognize E-box motifs to modulate gene expression. They are known to regulate diverse cellular functions including the cell cycle, immune response and glucose-lipid metabolism, but their roles in neuronal cells remain to be clarified. Here, we performed chromatin immunoprecipitation of USF1 from mouse brain cortex preparations. Subsequent promoter array analysis (ChIP-chip) indicated that USF1 exclusively bound to the CACGTG E-box motifs in the proximal promoter regions. Importantly, functional annotation of the USF1-binding targets revealed an enrichment of genes related to lysosomal functions. Gene expression arrays using a neuronal cell line subsequently revealed that knockdown of USFs deregulated lysosomal gene expression. Altered expression was validated by quantitative RT-PCR, supporting the conclusion that USFs regulate lysosomal gene expression. Furthermore, USFs knockdown slightly increased LysoTracker staining, implying a role for USFs in modulating lysosomal homeostasis. Together, our comprehensive, genome-scale analyses identified lysosomal genes as targets of USFs in neuronal cells, suggesting a potential additional pathway of lysosomal regulation. Gene expression profiling of neuro2a cells knocking down USFs. To screen USFs-downstream genes, mouse neuro2a cells were transfected with vectors for USFs miR RNAi or an empty vector, and then subjected to microarray analysis using Affymetrix Mouse Gene 1.0 ST Array.

2016-01-08 | E-GEOD-76615 | biostudies-arrayexpress

Genome-wide analyses in neuronal cells reveal that USF transcription factors regulate lysosomal gene expression

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2016-01-08 | E-GEOD-76617 | biostudies-arrayexpress

The tumor associated antigen PRAME exhibits dualistic functions that are targetable in diffuse large B cell lymphoma

Project description:PRAME is a prominent member of the cancer germline antigen family of proteins, which triggers autologous T-cell mediated immune responses. Integrative genomic analysis in diffuse large B-cell lymphoma (DLBCL) uncovered recurrent, and highly focal deletions of 22q11.22 including the PRAME gene, which were associated with poor outcome. PRAME-deleted tumors showed cytotoxic T-cell immune escape and were associated with cold tumor microenvironments. In addition, PRAME down-modulation was strongly associated with somatic EZH2 Y641 mutations in DLBCL, and PRC2-regulated genes were repressed in isogenic PRAME KO vs. PRAME wt lymphoma cell lines, with PRAME directly interacting with EZH2 as a negative regulator. EZH2 inhibition with EPZ-6438 abrogated these extrinsic and intrinsic effects leading to PRAME and microenvironment restoration in vivo. Our data highlight multiple functions of PRAME during lymphomagenesis, and provide a preclinical rationale for synergistic therapies combining epigenetic re-programming with PRAME-targeted therapies.

2024-12-04 | GSE190403 | GEO

Gene expression profiles of Hodgkin’s lymphoma cell lines with different sensitivity to cytotoxic drugs

Project description:By using high-density DNA microarrays, we analyzed the gene-expression profile of Hodgkin's lymphoma cell lines. Furthermore, we tested the sensitivity of these cell lines for cytotoxic drugs (cisplatin, etoposide, melphalan) and compared the gene-expression profile of chemotherapy-resistant and -sensitive cell lines. Staege et al., Exp Hematol 2008;36:886-896 RNA was extracted from established Hodgkin's lymphoma cell lines and hybridized with Affymetrix HG_U133A microarrays.

2011-01-10 | E-GEOD-26325 | biostudies-arrayexpress

Gene expression profiling of PRAME-positive and PRAME-negative osteosarcoma samples

Project description:Preferentially Expressed Antigen in Melanoma (PRAME) is frequently overexpressed in a wide variety of cancers and it has been proposed as prognostic marker for clinical outcome. It belongs to a class of non-mutated genes whose expression seems to be mostly restricted to tumor cells. Osteosarcoma is the most common primary malignant bone tumor in children and young adults. Despite advances in the diagnosis and management of osteosarcoma, long-term survival has not envolved substantially in the past decades, justifying efforts in finding effective therapeutic targets. In order to assess transcriptome characteristics that could contribute to further comprehend PRAME association with cancer, the technique of gene expression profiling was used to compare PRAME-positive and PRAME-negative osteosarcoma samples. Keywords: disease state analysis Six tumor samples representing distinct histological classes of osteosarcoma (telangiectatic, giant cell, anaplastic, osteoblastic and chondroblastic) were included in this study. They were obtained from individual patients ranging from 5 to 29 years old. Microarray experiments were carried out using the microarray platform CodeLink (GE Healthcare). This platform utilizes bioarrays consisting of 30-base, single pre-validated oligonucleotide probe per gene target. CodeLink UniSet Human I bioarrays, containing 10,000 human transcripts, were used for all experiments. Hybridization procedures strictly followed protocols provided by the manufacturer (GE Healthcare). A total of 12 arrays were hybridized, including 6 tumor samples (3 PRAME-positive and 3 PRAME-negative) and their respective technical replicates. Arrays were scanned following the recommended scanning procedure and settings for use with CodeLink bioarrays (GE Healthcare) on GenePix 4000B Array Scanner/GenePix Pro 4.0 software (Axon Instruments).

2010-05-18 | E-GEOD-8079 | biostudies-arrayexpress

The tumor antigen PRAME is a substrate recognition subunit of a Cul2-based ubiquitin ligase and is associated with active NFY promoters

Project description:The human tumor antigen PRAME (Preferentially expressed antigen of melanoma) is frequently overexpressed in tumors. High PRAME levels correlate with poor clinical outcome of several cancers, but the mechanisms by which PRAME could be involved in tumorigenesis remain largely elusive. We applied protein-complex purification strategies and identified PRAME as a substrate recognition subunit of a Cullin2-based E3 ubiquitin ligase. Genome-wide chromatin immunoprecipitation experiments revealed that PRAME is specifically enriched at NF-Y promoters that are transcriptionally active, suggesting a role in gene activation. Our results are consistent with the involvement of the PRAME ubiquitin ligase complex in NF-Y-mediated transcriptional regulation.

2011-07-29 | GSE26439 | GEO

Gene expression profiles of Hodgkin’s lymphoma cell lines with different sensitivity to cytotoxic drugs

2011-01-10 | GSE26325 | GEO

The tumor antigen PRAME is a substrate recognition subunit of a Cul2-based ubiquitin ligase and is associated with active NFY promoters

2011-07-29 | E-GEOD-26439 | biostudies-arrayexpress