Genomic characterisation of acral melanoma cell lines |
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Authors: | Furney Simon J Turajlic Samra Fenwick Kerry Lambros Maryou B MacKay Alan Ricken Gerda Mitsopoulos Costas Kozarewa Iwanka Hakas Jarle Zvelebil Marketa Lord Christopher J Ashworth Alan Reis-Filho Jorge S Herlyn Meenhard Murata Hiroshi Marais Richard |
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Institution: | Signal Transduction Team, Division of Cancer Biology, Institute of Cancer Research, London, UK. |
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Abstract: | Acral melanoma is a rare melanoma subtype with distinct epidemiological, clinical and genetic features. To determine if acral melanoma cell lines are representative of this melanoma subtype, six lines were analysed by whole-exome sequencing and array comparative genomic hybridisation. We demonstrate that the cell lines display a mutation rate that is comparable to that of published primary and metastatic acral melanomas and observe a mutational signature suggestive of UV-induced mutagenesis in two of the cell lines. Mutations were identified in oncogenes and tumour suppressors previously linked to melanoma including BRAF, NRAS, KIT, PTEN and TP53, in cancer genes not previously linked to melanoma and in genes linked to DNA repair such as BRCA1 and BRCA2. Our findings provide strong circumstantial evidence to suggest that acral melanoma cell lines and acral tumours share genetic features in common and that these cells are therefore valuable tools to investigate the biology of this aggressive melanoma subtype. Data are available at: http://rock.icr.ac.uk/collaborations/Furney_et_al_2012/. |
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Keywords: | acral melanoma cell lines exome sequencing genomics mutational signature |
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