p53 mutations and presence of HPV DNA do not correlate with radiosensitivity of gynecological cancer cell lines.

Abstract:

OBJECTIVE:The correlation between p53 tumor suppressor gene mutations and the presence of high-risk human papillomavirus (HPV) DNA with the in vitro radiosensitivity of gynecological malignancies was studied in 26 cell lines derived from gynecological cancers of 23 patients. METHODS:Comparison of the intrinsic radiosensitivity was performed with mean inactivation dose (D) determined with the 96-well plate clonogenic assay. p53 mutations were investigated with polymerase chain reaction and single-strand conformation polymorphism (PCR-SSCP) analysis and direct DNA sequencing, and the presence of HPV DNA was studied with PCR using HPV consensus primers. RESULTS:p53 mutations were found in 6 of 10 vulvar squamous cell carcinoma (SCC) lines. Nine vulvar and 1 vaginal SCC cell lines were HPV DNA negative and 1 vulvar cell line was HPV 16 positive. All 4 cervical SCC lines were HPV positive and possessed the wild-type p53. Three cell lines expressed HPV 16 and 1 HPV 68. Among 10 endometrial cancer cell lines, 2 cell lines with mutant p53 and 1 HPV 16 positive cell line were found. No correlation could be demonstrated between inactivation of the p53 gene and radiosensitivity in vitro; the cell lines were evaluated as one group or according to their anatomical origin or histology. CONCLUSION:Our results indicate that inactivation of the p53 gene through mutation or binding with HPV DNA does not increase the resistance of gynecological malignancies to ionizing radiation in vitro.

journal_name

Gynecol Oncol

journal_title

Gynecologic oncology

authors

Rantanen V,Grénman S,Kurvinen K,Hietanen S,Raitanen M,Syrjänen S

doi

10.1006/gyno.1998.5194

subject

Has Abstract

pub_date

1998-12-01 00:00:00

pages

352-8

issue

3

eissn

0090-8258

issn

1095-6859

pii

S0090-8258(98)95194-0

journal_volume

71

pub_type

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