Open Access

Cytokeratin and protein expression patterns in squamous cell carcinoma of the oral cavity provide evidence for two distinct pathogenetic pathways

  • Authors:
    • Gesche Frohwitter
    • Horst Buerger
    • Paul J. van Diest
    • Eberhard Korsching
    • Johannes Kleinheinz
    • Thomas Fillies
  • View Affiliations

  • Published online on: May 16, 2016     https://doi.org/10.3892/ol.2016.4588
  • Pages: 107-113
  • Copyright: © Frohwitter et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Squamous cell carcinoma (SCC) of the oral cavity is a morphological heterogeneous disease. Various cytokeratin (CK) expression patterns with different prognostic values have been described, but little is known concerning the underlying biological cell mechanisms. Therefore, the present study investigated 193 cases of oral SCCs using immunohistochemistry for α/β/γ‑catenin, glucose transporter 1, caspase‑3, X‑linked inhibitor of apoptosis protein, hypoxia inducible factor‑1α, carbonic anhydrase 9, heat shock protein (hsp) 70, mast/stem cell growth factor receptor, p21, p27, p16, p53, B‑cell lymphoma 6, epidermal growth factor receptor, cyclin D1 and CK1, 5/6, 8/18, 10, 14 and 19. Expression patterns were analyzed with biomathematical permutation analysis. The present results revealed a significant association between the expression of low‑molecular weight CK8/18 and 19 and a high‑tumor grade, β and γ‑catenin expression, deregulated cell cycle proteins and a predominant localization of the tumor on the floor of the mouth. By contrast, expression of high‑molecular weight CK1, 5/6, 10 and 14 was significantly associated with the expression of p21 and hsp70. In conclusion, the current study presents evidence for the existence of two parallel pathogenetic pathways in oral SCCs, characterized by the expression of low‑ and high‑molecular weight CKs. Additional studies are required to demonstrate the extent that these results may be used to improve therapeutic regimens.
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July-2016
Volume 12 Issue 1

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Frohwitter G, Buerger H, van Diest PJ, Korsching E, Kleinheinz J and Fillies T: Cytokeratin and protein expression patterns in squamous cell carcinoma of the oral cavity provide evidence for two distinct pathogenetic pathways. Oncol Lett 12: 107-113, 2016
APA
Frohwitter, G., Buerger, H., van Diest, P.J., Korsching, E., Kleinheinz, J., & Fillies, T. (2016). Cytokeratin and protein expression patterns in squamous cell carcinoma of the oral cavity provide evidence for two distinct pathogenetic pathways. Oncology Letters, 12, 107-113. https://doi.org/10.3892/ol.2016.4588
MLA
Frohwitter, G., Buerger, H., van Diest, P. J., Korsching, E., Kleinheinz, J., Fillies, T."Cytokeratin and protein expression patterns in squamous cell carcinoma of the oral cavity provide evidence for two distinct pathogenetic pathways". Oncology Letters 12.1 (2016): 107-113.
Chicago
Frohwitter, G., Buerger, H., van Diest, P. J., Korsching, E., Kleinheinz, J., Fillies, T."Cytokeratin and protein expression patterns in squamous cell carcinoma of the oral cavity provide evidence for two distinct pathogenetic pathways". Oncology Letters 12, no. 1 (2016): 107-113. https://doi.org/10.3892/ol.2016.4588