ZFIN ID: ZDB-PUB-110426-13
The histone methyltransferase SETDB1 is recurrently amplified in melanoma and accelerates its onset
Ceol, C.J., Houvras, Y., Jane-Valbuena, J., Bilodeau, S., Orlando, D.A., Battisti, V., Fritsch, L., Lin, W.M., Hollmann, T.J., Ferré, F., Bourque, C., Burke, C.J., Turner, L., Uong, A., Johnson, L.A., Beroukhim, R., Mermel, C.H., Loda, M., Ait-Si-Ali, S., Garraway, L.A., Young, R.A., and Zon, L.I.
Date: 2011
Source: Nature 471(7339): 513-517 (Journal)
Registered Authors: Bourque, Caitlin, Burke, Christopher, Ceol, Craig, Houvras, Yariv, Zon, Leonard I.
Keywords: cancer, genetics and geniomics, disease
Microarrays: GEO:GSE21505, GEO:GSE26372
MeSH Terms: Age of Onset; Amino Acid Substitution; Animals; Animals, Genetically Modified; Cell Transformation, Neoplastic/genetics (all 31) expand
PubMed: 21430779 Full text @ Nature
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ABSTRACT

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.

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