Expression of a small heat shock protein 27 (HSP27) in mouse skin tumors induced by UVB-irradiation

M. T. Kiriyama, M. Oka, M. Takehana, S. Kobayashi

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We investigated the expression of heat shock protein 27 (HSP27) at intermediate stages of a cutaneous tumor induced by UVB-irradiation stress (290-380 nm, max. 312 nm) using an immunostaining method. [[After 15-20 weeks of chronic exposure to UVB irradiation at a dose of 2 kJ/m2, HSP27 was found in the upper cell layers of bowenoid multilayers of epidermis, in areas of the lesions where normal stratification seems to be conserved. After 25 weeks, HSP27 was weakly expressed in squamous cell carcinoma (SCC). The HSP27 distribution patterns during cutaneous tumor progression resemble that of cytokeratin 10, a differentiation marker in keratinocytes. In SCC, a low degree of HSP27 expression was detected in the well-differentiated carcinomatous areas, but not in the poorly differentiated areas. These results indicate that the level of HSP27 decreases significantly as epithelial carcinoma growth progresses upon UVB-exposure. The expression of HSP27 may be associated with the onset of skin keratinocyte differentiation, but not with progression of SCC.

Original languageEnglish
Pages (from-to)197-200
Number of pages4
JournalBiological and Pharmaceutical Bulletin
Volume24
Issue number2
DOIs
Publication statusPublished - 2001

Fingerprint

HSP27 Heat-Shock Proteins
Small Heat-Shock Proteins
Skin
Neoplasms
Squamous Cell Carcinoma
Keratinocytes
Differentiation Antigens
Keratins
Epidermis
Carcinoma
Growth

Keywords

  • Heat shock protein 27 (HSP27)
  • Squamous cell carcinoma (SCC)
  • UVB chronic exposure

ASJC Scopus subject areas

  • Molecular Medicine
  • Pharmacology, Toxicology and Pharmaceutics(all)

Cite this

Expression of a small heat shock protein 27 (HSP27) in mouse skin tumors induced by UVB-irradiation. / Kiriyama, M. T.; Oka, M.; Takehana, M.; Kobayashi, S.

In: Biological and Pharmaceutical Bulletin, Vol. 24, No. 2, 2001, p. 197-200.

Research output: Contribution to journalArticle

Kiriyama, M. T. ; Oka, M. ; Takehana, M. ; Kobayashi, S. / Expression of a small heat shock protein 27 (HSP27) in mouse skin tumors induced by UVB-irradiation. In: Biological and Pharmaceutical Bulletin. 2001 ; Vol. 24, No. 2. pp. 197-200.
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