Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 565-74 |
| Number of pages | 10 |
| Journal | British Journal of Cancer |
| Volume | 105 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 9 Aug 2011 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- Antigens, CD/metabolism
- Apoptosis
- Blotting, Western
- Cadherins/metabolism
- Cell Cycle
- Cell Line, Tumor
- Cell Survival
- Cyclin-Dependent Kinase Inhibitor p21/metabolism
- Disease-Free Survival
- Down-Regulation
- Electrophoresis, Polyacrylamide Gel
- Fluorescent Antibody Technique
- Gene Expression Regulation, Neoplastic
- Homeodomain Proteins/metabolism
- Humans
- Immunohistochemistry
- Inhibitor of Apoptosis Proteins/antagonists & inhibitors
- Melanoma/genetics
- Multivariate Analysis
- Neoplasm Invasiveness
- Predictive Value of Tests
- Prognosis
- Proportional Hazards Models
- Protein Array Analysis
- Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors
- Signal Transduction
- Skin Neoplasms/genetics
- Spheroids, Cellular
- Survival Analysis
- Survivin
- Up-Regulation
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