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Functional and prognostic relevance of the homeobox protein MSX2 in malignant melanoma
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2011 (English)In: British Journal of Cancer, ISSN 0007-0920, E-ISSN 1532-1827, Vol. 105, no 4, 565-574 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The homeobox containing transcription factor MSX2 is a key regulator of embryonic development and has been implicated to have a role in breast and pancreatic cancer. METHODS: Using a selection of two-and three-dimensional in vitro assays and tissue microarrays (TMAs), the clinical and functional relevance of MSX2 in malignant melanoma was explored. A doxycyline-inducible over-expression system was applied to study the relevance of MSX2 in vitro. For TMA construction, tumour material from 218 melanoma patients was used. RESULTS: Ectopic expression of MSX2 resulted in the induction of apoptosis and reduced the invasive capacity of melanoma cells in three-dimensional culture. MSX2 over-expression was shown to affect several signalling pathways associated with cell invasion and survival. Downregulation of N-Cadherin, induction of p21 and inhibition of both BCL2 and Survivin were observed. Cytoplasmic MSX2 expression was found to correlate significantly with increased recurrence-free survival (P = 0.008). Nuclear expression of MSX2 did not result in significant survival correlations, suggesting that the beneficial effect of MSX2 may be independent of its DNA binding activity. CONCLUSIONS: MSX2 may be an important regulator of melanoma cell invasion and survival. Cytoplasmic expression of the protein was identified as biomarker for good prognosis in malignant melanoma patients.

Place, publisher, year, edition, pages
2011. Vol. 105, no 4, 565-574 p.
Keyword [en]
melanoma, MSX2, homeobox, apoptosis, spheroid invasion, biomarker
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-158166DOI: 10.1038/bjc.2011.249ISI: 000293784400014OAI: oai:DiVA.org:uu-158166DiVA: diva2:438718
Available from: 2011-09-05 Created: 2011-09-01 Last updated: 2017-12-08Bibliographically approved

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Department of Immunology, Genetics and Pathology
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