Expression of p53 in human esophageal carcinoma: An immunohistochemical study with correlation to proliferating cell nuclear antigen expression

Hironobu Sasano, Shukichi Miyazaki, Yuji Gooukon, Tetsuro Nishihira, Takashi Sawai, Hiroshi Nagura

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

Immunolocalization of the nuclear protein p53 tumor suppressor gene product is considered to be one of the best methods of detecting a mutated form of p53. We have studied p53 immunohistochemically by using monoclonal antibody pAb1801 in 15 cases of esophageal squamous cell carcinoma. Immunoreactive p53 was observed in the nuclei of tumor cells in 4% paraformaldehyde-fixed, frozen sections (12 of 15) and paraffin-embedded sections (11 of 15), but not in routinely processed (10% formalin-fixed) specimens. p53 expression was closely correlated with the malignant phenotype, including dysplasia. p53 was not observed in histologically normal mucosa, excep in three cases in which scattered immunoreactivity was observed in parabasal and basal cells. Immunostaining of ki67 and proliferating cellular nuclear antigen on adjacent tissue sections revealed that p53 expression was strongly correlated with ki67 and proliferating cellular nuclear antigen in carcinoma and dysplastic cells, but not in normal mucosa, suggesting involvement of the mutated form of p53 in the cell cycle of malignant cells. Immunohistochemical patterns of p53 were not related significantly to clinicopathologic parameters in the cases examined. Therefore, p53 expression was strongly associated with the proliferation of carcinoma cells but not with that of normal cells in esophageal carcinoma.

Original languageEnglish
Pages (from-to)1238-1243
Number of pages6
JournalHuman Pathology
Volume23
Issue number11
DOIs
Publication statusPublished - 1992 Nov

Keywords

  • p53 in esophageal cancer

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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