ISSN:
1432-2307
Keywords:
Key words Tenascin-C
;
Laryngeal carcinoma
;
Immunohistochemistry
;
In situ hybridization
;
Cell proliferation
;
Cell migration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Tenascin-C (TN-C) is an extracellular matrix glycoprotein upregulated in various pathological processes. In this study, we investigated its distribution in dysplasia and carcinoma of the human larynx using immunohistochemistry and in situ hybridization (ISH) techniques. In all cancer tissues, TN-C immunostaining was markedly increased in the stroma, especially around the cancer cell nests. In addition, cytoplasmic staining of cancer cells was also observed in 62.5% of the invasive cases, the cells being distributed in the periphery of the nests adjacent to the stroma. TN-C mRNA signals in cancer cells were detected in all six cases examined by ISH. Furthermore, in vitro evaluation of the roles of TN-C demonstrated an increase in the proliferating cell fraction in a dose-dependent manner. In a wound closure assay, the addition of TN-C promoted migration. We conclude that TN-C secreted by cancer cells may be involved in their proliferation and migration in an autocrine fashion.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s004280050433
Permalink
