Involvement of tenascin-C in proliferation and migration of laryngeal carcinoma cells

Virchows Arch. 1999 Nov;435(5):496-500. doi: 10.1007/s004280050433.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carcinoma in Situ / metabolism
  • Carcinoma in Situ / pathology
  • Carcinoma, Squamous Cell / metabolism
  • Carcinoma, Squamous Cell / pathology
  • Cell Adhesion / drug effects
  • Cell Division / drug effects
  • Cell Movement / drug effects
  • Cell Movement / physiology*
  • Cell Nucleus / metabolism
  • Dose-Response Relationship, Drug
  • Fibronectins / metabolism
  • Humans
  • Immunohistochemistry
  • In Situ Hybridization
  • Laryngeal Mucosa / cytology
  • Laryngeal Mucosa / metabolism*
  • Laryngeal Neoplasms / metabolism*
  • Laryngeal Neoplasms / pathology
  • Mitotic Index
  • RNA, Messenger / biosynthesis
  • Tenascin / genetics
  • Tenascin / metabolism*
  • Tenascin / pharmacology
  • Tenascin / physiology*
  • Tumor Cells, Cultured

Substances

  • Fibronectins
  • RNA, Messenger
  • Tenascin