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Topoisomerase I Amplification in Melanoma is Associated with More Advanced Tumours and Poor Prognosis
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2010 (English)In: Pigment Cell and Melanoma Research, ISSN 1755-148X, Vol. 23, no 4, 542-553 p.Article in journal (Refereed) Published
Abstract [en]

Summary In this study, we used array-comparative genomic hybridisation (aCGH) and fluorescent in situ hybridisation (FISH) to examine genetic aberrations in melanoma cell lines and tissues. aCGH revealed that the most frequent genetic changes found in melanoma cell lines were amplifications on chromosomes 7p and 20q, along with disruptions on Chr 9, 10, 11, 12, 22 and Y. Validation of the results using FISH on tissue microarrays (TMAs) identified TOP1 as being amplified in melanoma tissues. TOP1 amplification was detected in a high percentage (33%) of tumours and was associated with thicker, aggressive tumours. These results show that TOP1 amplification is associated with advanced tumours and poor prognosis in melanoma. These observations open the possibility that TOP1-targeted therapeutics may be of benefit in a particular subgroup of advanced stage melanoma patients.

Place, publisher, year, edition, pages
2010. Vol. 23, no 4, 542-553 p.
Keyword [en]
melanoma, array-comparative genomic hybridization, fluorescence in situ hybridization, tissue microarrays, amplification, Topoisomerase I
National Category
Medical and Health Sciences
Research subject
Pathology
Identifiers
URN: urn:nbn:se:uu:diva-125937DOI: 10.1111/j.1755-148X.2010.00720.xISI: 000280711100011PubMedID: 20465595OAI: oai:DiVA.org:uu-125937DiVA: diva2:321421
Available from: 2010-05-31 Created: 2010-05-31 Last updated: 2010-12-07Bibliographically approved

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