Differential expression of two new members of the p53 family, p63 and p73, in extramammary Paget's disease

S. Chen, Y. Moroi, K. Urabe, S. Takeuchi, M. Kido, S. Hayashida, H. Uchi, T. Uenotsuchi, Y. Tu, M. Furue

研究成果: ジャーナルへの寄稿記事

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Background. The proteins p53, p63 and p73 are known to be overexpressed and to play important roles in the pathogenesis of many tumours, but the expression of p63 and p73 has not previously been investigated in extramammary Paget's disease (EMPD). Aim. To investigate the potential contribution of p53, p63 and p73 in the pathogenesis of EMPD. Methods. In total, 35 paraffin wax-embedded tissue samples from patients with EMPD were examined using immunohistochemical staining for p53, p63 and p73. Results. All of the 35 EMPD specimens, including all 6 invasive EMPD and 2 metastatic lymph-node specimens, showed nuclear overexpression of both p53 and p73. The expression levels (percentage of positive cells) of p53 and p73 (90.66 ± 12.53% and 80.20 ± 13.07%) in EMPD were significantly higher than those of normal skin. There was a significant correlation between the expression levels of p53 and p73 in EMPD. In 29 of 35 EMPD specimens, there was no nuclear expression of p63, and weak or moderate staining was found in only 6 specimens. The expression level of p63 in EMPD was significantly less than that in normal skin. Conclusions. Our study shows that the concordant overexpression of p53 and p73 and the decreased expression of p63 may play a pivotal role in the pathogenesis of EMPD. The decreased expression of p63 may play a more important role in the pathogenesis of EMPD than the overexpression of p53 and p73.

元の言語英語
ページ(範囲)634-640
ページ数7
ジャーナルClinical and Experimental Dermatology
33
発行部数5
DOI
出版物ステータス出版済み - 9 1 2008

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All Science Journal Classification (ASJC) codes

  • Dermatology

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