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The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [HT144]

ABSTRACT: The aim of this work is to establish the impact of SETDB1 expression in melanoma. SETDB1 was overexpressed in melanoma cell lines (SETDB1 OE) and whole-genome expression profiles were compared to the control ( melanoma cells carrying an empty vector).

ORGANISM(S): Homo sapiens

PROVIDER: GSE109669 | GEO | 2019/12/31

REPOSITORIES: GEO

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The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [SETDB1]

Project description:The aim of this work is to establish the impact of SETDB1 expression in melanoma. SETDB1 was overexpressed in melanoma cell lines (SETDB1 OE) and whole-genome expression profiles were compared to the control ( melanoma cells carrying an empty vector). .

2019-12-31 | GSE109670 | GEO

The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [ChIP-seq]

Project description:Histone modifications play a crucial role in the progression of various cancers. The histone methyltransferase SETDB1 catalyzes the addition of methyl groups to histone H3 at lysine 9. Here, we describe SETDB1 contribution to melanoma tumorigenesis. SETDB1 is highly amplified in melanoma cells and in patients’ tumors. Increased SETDB1 expression, which correlates with SETDB1 amplification, is associated with a more aggressive phenotype in in vitro and in vivo studies. SETDB1 implements its effects through the regulation of Thrombospondin 1. SETDB1’s SET-domain is essential to maintain its tumorigenic effects. SETDB1 inhibition reduces cell growth in melanomas resistant to targeted treatments. In essence, we support SETDB1 as a major driver of melanoma development, highlighting a role as potential future target for the treatment of this disease.

2019-12-31 | GSE109880 | GEO

Recurrent amplifications of the histone methyltransferase SETDB1 in melanoma

Project description:The most common mutation in human melanoma, BRAF(V600E), activates the serine/threonine kinase BRAF and causes excessive activity in the mitogen-activated protein kinase pathway. BRAF(V600E) mutations are also present in benign melanocytic naevi, highlighting the importance of additional genetic alterations in the genesis of malignant tumours. Such changes include recurrent copy number variations that result in the amplification of oncogenes. For certain amplifications, the large number of genes in the interval has precluded an understanding of the cooperating oncogenic events. Here we have used a zebrafish melanoma model to test genes in a recurrently amplified region of chromosome 1 for the ability to cooperate with BRAF(V600E) and accelerate melanoma. SETDB1, an enzyme that methylates histone H3 on lysine 9 (H3K9), was found to accelerate melanoma formation significantly in zebrafish. Chromatin immunoprecipitation coupled with massively parallel DNA sequencing and gene expression analyses uncovered genes, including HOX genes, that are transcriptionally dysregulated in response to increased levels of SETDB1. Our studies establish SETDB1 as an oncogene in melanoma and underscore the role of chromatin factors in regulating tumorigenesis. DNA was enriched from short-term cultures of cells and chromatin immunoprecipitations (ChIPs) were analyzed by Solexa sequencing. ChIPs were performed using an antibody against SetDB1 in WM853.2. Whole cell extracts are provided for WM262, WM451Lu and WM853.2 cells.

2012-03-17 | E-GEOD-36579 | biostudies-arrayexpress

The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [SETDB1]

Project description:The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [SETDB1]

| PRJNA431643 | ENA

The histone methyltransferase SETDB1 is recurrently amplified in melanoma and accelerates its onset

Project description:The most common mutation in human melanoma, BRAF(V600E), activates the serine/threonine kinase BRAF and causes excessive activity in the mitogen-activated protein kinase pathway. BRAF(V600E) mutations are also present in benign melanocytic naevi, highlighting the importance of additional genetic alterations in the genesis of malignant tumours. Such changes include recurrent copy number variations that result in the amplification of oncogenes. For certain amplifications, the large number of genes in the interval has precluded an understanding of the cooperating oncogenic events. Here we have used a zebrafish melanoma model to test genes in a recurrently amplified region of chromosome 1 for the ability to cooperate with BRAF(V600E) and accelerate melanoma. SETDB1, an enzyme that methylates histone H3 on lysine 9 (H3K9), was found to accelerate melanoma formation significantly in zebrafish. Chromatin immunoprecipitation coupled with massively parallel DNA sequencing and gene expression analyses uncovered genes, including HOX genes, that are transcriptionally dysregulated in response to increased levels of SETDB1. Our studies establish SETDB1 as an oncogene in melanoma and underscore the role of chromatin factors in regulating tumorigenesis. ChIP was performed from short-term cultures of WM262 and WM451Lu cells.

2011-03-25 | E-GEOD-28170 | biostudies-arrayexpress

Recurrent amplifications of the histone methyltransferase SETDB1 in melanoma

2012-03-17 | GSE36579 | GEO

The histone methyltransferase SETDB1 is recurrently amplified in melanoma and accelerates its onset

2011-03-25 | GSE28170 | GEO

The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma

Project description:The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma

| PRJNA431641 | ENA

Expression analysis of melanoma harvested after GFP or SETDB1 expression

Project description:This SuperSeries is composed of the following subset Series: GSE21505: Expression analysis of melanoma harvested from GFP versus SETDB1 transgenic zebrafish (Danio rerio) GSE26371: Expression analysis of human melanoma short-term culture WM451-Lu harvested after lentiviral infection with a GFP (control) or SETDB1 (experimental) viral vector Refer to individual Series

2011-01-07 | E-GEOD-26372 | biostudies-arrayexpress

The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [HT144]

Project description:The histone methyltransferase SETDB1 contributes to melanoma tumorigenesis and serves as a new potential therapeutic target in BRAF/MEK inhibitor-resistant melanoma [HT144]

| PRJNA431638 | ENA

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