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The influence of melanoma extracellular vesicles on benign melanocytes, dermal fibroblasts and microvascular endothelial cells.

ABSTRACT: This study investigates the role of PRAME (Preferentially Expressed Antigen in Melanoma), a cancer-testis antigen, in melanoma progression, particularly its function in melanoma-derived extracellular vesicles (EVs) and its impact on benign primary melanocytes (PM), primary fibroblasts(PF) and microvascular endothelial cells (EN).

ORGANISM(S): Homo sapiens

PROVIDER: GSE279329 | GEO | 2024/10/16

REPOSITORIES: GEO

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The influence of melanoma extracellular vesicles on benign melanocytes, dermal fibroblasts and microvascular endothelial cells (part1)

Project description:This study investigates the role of PRAME (Preferentially Expressed Antigen in Melanoma), a cancer-testis antigen, in melanoma progression, particularly its function in melanoma-derived extracellular vesicles (EVs) and its impact on benign primary melanocytes (PM), primary fibroblasts(PF) and microvascular endothelial cells (EN).

2024-10-22 | GSE279511 | GEO

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

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

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

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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 RNA was extracted from established Hodgkin's lymphoma cell line L-540 and hybridized with Affymetrix HG_U133A microarrays.

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PRAME induced inhibition of retinoic acid receptor signaling-mediated differentiation - a possible target for ATRA response in AML without t(15;17)

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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).

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PRAME induced inhibition of retinoic acid receptor signaling-mediated differentiation - a possible target for ATRA response in AML without t(15;17)

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The influence of melanoma extracellular vesicles on benign melanocytes, dermal fibroblasts and microvascular endothelial cells.

Project description:The influence of melanoma extracellular vesicles on benign melanocytes, dermal fibroblasts and microvascular endothelial cells.

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Expression data from human neonatal melanocytes and Notch transformed human neonatal melanocytes

Project description:Notch1 Activation Confers Transforming Properties to Primary Human Melanocytes and Promotes Human Melanoma Progression We used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated genes during this process.

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