Differential expression of heat shock protein 27 in normal oral mucosa, oral epithelial dysplasia and squamous cell carcinoma

  • Authors:
    • Rosy Leonardi
    • Giuseppe Pannone
    • Gaetano Magro
    • Yasusei Kudo
    • Takashi Takata
    • Lorenzo Lo Muzio
  • View Affiliations

  • Published online on: March 1, 2002     https://doi.org/10.3892/or.9.2.261
  • Pages: 261-266
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Abstract

The aim of this study was to evaluate HSP27 expression in fetal, normal and inflammed oral mucosal epithelium and in oral premalignant epithelial lesions and in their ensuing invasive cancers. In developing human oral epithelia, immunoreactions for HSP27 were moderately observed in suprabasal keratinocytes of palate and tongue. Normal oral epithelium had an intense suprabasal positivity. In inflammed oral mucosa, HSP27 staining was stronger in basal and suprabasal keratinocytes than in normal epithelium. Most oral premalignant lesions showed no (5 cases, 29%) or low (8 cases, 46.4%) staining. In OSCC both low and high HSP27 levels of expression were observed. HSP27 immunolabelling was down-regulated in poorly differentiated areas and up-regulated in highly differentiated ones. These findings indicated that HSP27 expression seems to protect cells from apoptosis during inflammation, while the down-regulation in dysplasia could impair the protective mechanism against mutagenesis induced by environmental factors and thus enhancing the transformation of oral epithelial dysplasia into OSCCs.

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March-April 2002
Volume 9 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Leonardi R, Pannone G, Magro G, Kudo Y, Takata T and Lo Muzio L: Differential expression of heat shock protein 27 in normal oral mucosa, oral epithelial dysplasia and squamous cell carcinoma. Oncol Rep 9: 261-266, 2002.
APA
Leonardi, R., Pannone, G., Magro, G., Kudo, Y., Takata, T., & Lo Muzio, L. (2002). Differential expression of heat shock protein 27 in normal oral mucosa, oral epithelial dysplasia and squamous cell carcinoma. Oncology Reports, 9, 261-266. https://doi.org/10.3892/or.9.2.261
MLA
Leonardi, R., Pannone, G., Magro, G., Kudo, Y., Takata, T., Lo Muzio, L."Differential expression of heat shock protein 27 in normal oral mucosa, oral epithelial dysplasia and squamous cell carcinoma". Oncology Reports 9.2 (2002): 261-266.
Chicago
Leonardi, R., Pannone, G., Magro, G., Kudo, Y., Takata, T., Lo Muzio, L."Differential expression of heat shock protein 27 in normal oral mucosa, oral epithelial dysplasia and squamous cell carcinoma". Oncology Reports 9, no. 2 (2002): 261-266. https://doi.org/10.3892/or.9.2.261