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Dzieȩgiel P, Owczarek T, Plaz`uk E, Gomułkiewicz A, Majchrzak M, Podhorska-Okołów M, Driouch K, Lidereau R, Ugorski M. Ceramide galactosyltransferase (UGT8) is a molecular marker of breast cancer malignancy and lung metastases. Br J Cancer 2010; 103:524-31. [PMID: 20648017 PMCID: PMC2939773 DOI: 10.1038/sj.bjc.6605750] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 05/18/2010] [Accepted: 05/27/2010] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND It was shown recently on the level of gene expression that UGT8, coding UDP-galactose:ceramide galactosyltransferase, is one of six genes whose elevated expression correlated with a significantly increased the risk of lung metastases in breast cancer patients. In this study primary tumours and their lung metastases as well as breast cancer cell lines were analysed for UGT8 expression at the protein level. METHODS Expression of UGT8 in breast cancer tissue specimens and breast cancer cell lines was analysed using IHC, real-time PCR and Western blotting. RESULTS Comparison of the average values of the reaction intensities (IRS scale) showed a significant difference in UGT8 expression between (1) primary and metastatic tumours (Mann-Whitney U, P<0.05), (2) tumours of malignancy grades G3 and G2 (Mann-Whitney U, P<0.01) as well as G3 and G1 (Mann-Whitney U, P<0.001) and (3) node-positive and node-negative tumours (Mann-Whitney U, P<0.001). The predictive ability of increased expression of UGT8 was validated at the mRNA level in three independent cohorts of breast cancer patients (721). Similarly, breast cancer cell lines with the 'luminal epithelial-like' phenotype did not express or weakly expressed UGT8, in contrast to malignant, 'mesenchymal-like,' cells forming metastases in nude mice. CONCLUSION Our data suggest that UGT8 is a significant index of tumour aggressiveness and a potential marker for the prognostic evaluation of lung metastases in breast cancer.
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Affiliation(s)
- P Dzieȩgiel
- Department of Histology and Embryology, Medical University, T. Chałubińskiego 6a, Wrocław 50–368, Poland
- Department of Histology and Embryology, Medical University, Świeȩcickiego 6, Poznań 61–781, Poland
- Department of Pathology, Lower Silesian Oncology Center, Wrocław 53–413, Pl. Hirszfelda 12, Poland
| | - T Owczarek
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, C. Norwida 31, Wrocław 50–357, Poland
| | - E Plaz`uk
- Laboratory of Glycobiology and Cell Interactions, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, Wrocław 53–114, Poland
| | - A Gomułkiewicz
- Department of Histology and Embryology, Medical University, T. Chałubińskiego 6a, Wrocław 50–368, Poland
| | - M Majchrzak
- Department of Thoracic Surgery, Medical University, Grabiszyńska 105, Wrocław 53–430, Poland
| | - M Podhorska-Okołów
- Department of Histology and Embryology, Medical University, T. Chałubińskiego 6a, Wrocław 50–368, Poland
| | - K Driouch
- Oncogenetics laboratory/INSERM U 735, Saint-Cloud, France
| | - R Lidereau
- Oncogenetics laboratory/INSERM U 735, Saint-Cloud, France
| | - M Ugorski
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, C. Norwida 31, Wrocław 50–357, Poland
- Laboratory of Glycobiology and Cell Interactions, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, Wrocław 53–114, Poland
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