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- Title
Beta-catenin expression in Dupuytren's disease: potential role for cell-matrix interactions in modulating beta-catenin levels in vivo and in vitro.
- Authors
Varallo, Vincenzo M; Gan, Bing Siang; Seney, Shannon; Ross, Douglas C; Roth, James H; Richards, Robert S; McFarlane, Robert M; Alman, Benjamin; Howard, Jeffrey C
- Abstract
Dupuytren's disease (DD) is a superficial fibromatosis of the hand. Although the molecular mechanisms responsible for this disease are unknown, recent studies suggest that beta-catenin may be a key factor involved in fibromatosis. In this study, we analysed the in vivo and in vitro expression levels of beta-catenin in DD, using surgical specimens and primary cell lines. Although no somatic mutations (exon 3) of beta-catenin were detected, Western blot analysis revealed high levels of beta-catenin in diseased palmar fascia, and low to undetectable levels of beta-catenin in patient-matched normal palmar fascia. Immunohistochemistry analysis showed high levels of beta-catenin expression within the disease fascia, as well as cytoplasmic and nuclear accumulations of the protein. Immunoprecipitation of beta-catenin from seven patient lesions showed the protein to be tyrosine phosphorylated. Lastly, Western analysis of three patient-matched (disease and normal fascia) primary cell cultures showed significantly elevated levels of beta-catenin in disease cells cultured in three-dimensional collagen lattices. This is the first extensive in vivo and in vitro characterization of beta-catenin in DD, and the first to suggest that the extracellular matrix may play an important role in modulating beta-catenin stability in DD.Oncogene (2003) 22, 3680-3684. doi:10.1038/sj.onc.1206415
- Subjects
DUPUYTREN'S contracture; EXTRACELLULAR matrix; TYROSINE; CELL culture; GENES
- Publication
Oncogene, 2003, Vol 22, Issue 24, p3680
- ISSN
0950-9232
- Publication type
Article
- DOI
10.1038/sj.onc.1206415