Zusammenfassung
Veränderungen des p53-Tumor-suppressorsystems sind sowohl auf genetischer als auch auf Proteinebene die häufigsten bekannten molekularen Anomalien humaner maligner Tumoren. Wir untersuchten immunhistochemisch die Expression des p53-Proteins in 123 routinemäßig Formalin-fixierten und Paraffin-eingebetteten Platten-epithelkarziomen der Mundhöhle mittels 4 verschiedener anti-p53-Antikörpern (CM1, PAb 1801, DO7, PAb240) nach Antigendemaskierung durch feuchtes Autoklavieren. Eine p53-Immunoreaktivität wurde in 55% der Karzinome mit mindestens einem Antikörper nachgewiesen. In der nichtneoplastischen und dysplastischen Mukosa konnte p53 in etwa 70% der Fälle gezeigt werden. Es fand sich jedoch keine statistisch signifikante Korrelation zwischen den klinisch-pathologischen Parametern (Alter, Geschlecht, Überleben, histologischem Grading) und dem p53-Expressionsmuster. Unsere Studie legt nahe, daß das p53-Tumor-suppressorgen höchstwahrscheinlich in der frühen Phase der oralen Karzinomentstehung beteiligt ist; der immuhistochemische p53-Nachweis ist jedoch ohne statistisch signifikante Bedeutung für die Prognose der betreffenden Tumoren.
Summary
Routinely formalin-fixed and paraffin-embedded material of 123 squamous cell carcinomas of the floor of the mouth and tongue bordered by non-tumorous mucosa were immunohistochemically investigated for the expression of p53 protein using a panel of four anti-p53 antibodies (CM1, PAb 1801, DO7, PAb240) following wet autoclave antigen retrieval. p53 immunoreactivity was detected in 55–67% of the carcinomas, with the different antibodies used showing a preferential accumulation of the p53-positive tumour cells at the invasive tumour front. In dysplastic and normal epithelium focal or dispersed p53 immunopositivity could be detected in 62–72% and 57–70% of the cases, respectively, regardless of the p53 immunostatus of the carcinomas. No statistically significant correlations between p53 immunophenotype of the tumours and clinico-pathological parameters, or survival of the patients, could be detected statistically. It is concluded that immunohistochemically detectable p53 accumulation in oral cancer might indicate an early stage of carcinogenesis. The immunohistochemical detection of p53 in these tumours, however, is without prognostic significance.
Literatur
Ahomadegbe JC, Barrois M, Fogel S, Le Bihan ML, Douc-Rasy S, Duvillard P, Armand JP, Riou G (1995) High incidence of p53 alterations (mutation, deletion, overexpression) in head and neck primary tumours and metastases; absence of correlation with clinical outcome. Frequent protein overexpression in normal epithelium and in early non-invasive lesions. Oncogene 10: 1217–1227
Bánkfalvi A, Navabi H, Bier B, Böcker W, Schmid KW (1994) Wet autoclave pretreatment for antigen retrieval in diagnostic immunohistochemistry. J Pathol 174: 223–228
Bosari S, Viale G (1995) The clinical significance of p53 aberrations in human tumours. Virchows Arch 427: 229–241
Broders AC (1920) Squamous-cell epithelioma of the lip. J Am Med Assoc 74: 656–664
Bryne M, Koppang HS, Lilleng R, Kjaerheim A (1992) Malignancy grading of the deep invasive margins of oral squamous cell carcinomas has high prognostic value. J Pathol 166: 375–381
Chen YT, Xu L, Massey L, Zlotolow IM, Huvos AG, Garin-Chesa P, Old LJ (1994) Frameshift and nonsense p53 mutations in squamous cell carcinoma of the head and neck: non-reactivity with three anti-p53 monoclonal antibodies. Int J Oncol 4: 609–614
Fisher CJ, Gillett CE, Vojtesek B, Barnes DM, Millis RR (1994) Problems with p53 immunohistochemical staining: the effect of fixation and variation in the methods of evaluation. Br J Cancer 69: 26–31
Gluckman JL, Stambrook PJ, Pavelic ZP (1994) Prognostic significance of p53 protein accumulation in early stage TI oral cavity cancer. Eur J Cancer B Oral Oncol 30: 281
Hall PA, Lande DP (1994) p53 in tumour pathology: can we trust immunohistochemistry?-Revisited! J Pathol 172: 1–4
Hollstein M, Sidransky D, Vogelstein B, Harris C (1991) p53 mutations in human cancers. Science 253: 49–53
Homann N, Andl T, Nees M, Schumann A, Herold-Mende C, Bosch FX (1993) Die Bedeutung von aberrantem p53-Protein in Kopf-Hals-Tumoren und sein Einfluß auf Proliferation und Differenzierung. HNO 41: 254–260
Lane DP (1992) p53, guardian of the genome. Nature 358: 15–16
Matthews JB, Scully C, Jovanovic A, Van der Waal I, Yeudall WA, Prime SS (1993) Relationship of tobacco/alcohol use to p53 expression in patients with lingual squamous cell carcinomas. Eur J Cancer B Oral Oncol 29: 285–289
Nees M, Homann N, Discher H, Andl T, Enders C, Herold-Mende C, Schumann A, Bosch FX: Expression of mutated p53 occurs in tumour-distant epithelia of head and neck cancer patients: a possible biomarker for the development of multiple tumours. Cancer Res 53: 4189-4195
Ogden GR, Kiddie RA, Lunny DP, Lane DP (1992) Assessment of p53 protein expression in normal, benign and malignant oral mucosa. J Pathol 166: 389–394
Piffkó J. Bánkfalvi A, Öfner D, Joos U, Böcker W, Schmid KW (1995) Immunohistochemical detection of p53 protein in archival tissues from squamous cell carcinomas of the oral cavity using wet autoclave antigen retrieval. J Pathol 176: 69–75
Piffkó J, Bánkfalvi A, Öfner D, Berens A, Tkotz T, Joos U, Böcker W, Schmid KW (1995) Expression of p53 protein in oral squamous cell carcinomas and adjacent nontumourous mucosa of the floor of the mouth: an archival immunohistochemical study using wet autoclave pretreatment for antigen retrieval. J Oral Path Med 24: 337–342
Tsuji T, Mimura S, Wen X, Li A, Kanekawa A, Sasaki K, Shinozaki F (1995) The significance of PCNA and p53 protein in some oral tumours. Int J Oral Maxillofac Surg 24: 221–225
Wilkinson L (1988) SYSTAT: the system of statistics. Systat, Evanstone, IL
Wynford-Thomas D (1992) p53 in tumour pathology: can we trust immunohistochemistry? J Pathol 166: 329–330
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Piffkó, J., Bánkfalvi, Á. Immunhistochemische Expression des p53-Proteins in Plattenepithelkarzinomen und normalem und dysplastischem Epithel der Mundhöhle. Mund Kiefer GesichtsChir 1, 104–107 (1997). https://doi.org/10.1007/BF03043523
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03043523