TY - JOUR
T1 - Expression of p53 in human esophageal carcinoma
T2 - An immunohistochemical study with correlation to proliferating cell nuclear antigen expression
AU - Sasano, Hironobu
AU - Miyazaki, Shukichi
AU - Gooukon, Yuji
AU - Nishihira, Tetsuro
AU - Sawai, Takashi
AU - Nagura, Hiroshi
PY - 1992/11
Y1 - 1992/11
N2 - 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.
AB - 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.
KW - p53 in esophageal cancer
UR - http://www.scopus.com/inward/record.url?scp=0026495617&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026495617&partnerID=8YFLogxK
U2 - 10.1016/0046-8177(92)90291-A
DO - 10.1016/0046-8177(92)90291-A
M3 - Article
C2 - 1358781
AN - SCOPUS:0026495617
VL - 23
SP - 1238
EP - 1243
JO - Human Pathology
JF - Human Pathology
SN - 0046-8177
IS - 11
ER -