Cyclin E amplification and overexpression in clear cell adenocarcinoma of the ovary

Academic Article

Abstract

  • Objective: The purpose of this study is to compare DNA, mRNA and protein levels of the cyclin E between clear cell (CC) and serous (SC) ovarian carcinomas, and evaluate the relationship between cyclin E and p53 status. Method: We examined the DNA, mRNA and protein levels of cyclin E and the protein level of p53 in 44 CCs and 39 SCs using microdissected tissues. Results: Relative cyclin E mRNA expression was significantly higher in CC (3.62, 95% CI, 2.24-4.99) than in SC (1.75, 95% CI, 1.05-2.45; p = 0.0098). The percentage of positive nuclear staining of cyclin E was significantly higher in CC (48.3, 95% CI, 40.4-56.1) than SC (25.3, 95% CI, 17.4-33.3; p = 0.0001). The mRNA and protein expression of cyclin E was significantly correlated (r = 0.66, p < 0.0001). However, the correlation between relative DNA copy number and relative mRNA expression was not significant (r = -0.063; p = 0.66). Percentage of positive nuclear staining of cyclin E was significantly higher in p53 positive cases (51.8, 95% CI, 40.0-63.5) than p53 negative cases (36.2, 95% CI, 28.2-44.2; p = 0.028). Conclusions: Cyclin E expression is significantly higher in CC than in SC. Cyclin E expression is significantly related with p53 positivity. Copyright © 2004 S. Karger AG, Basel.
  • Published In

  • Oncology  Journal
  • Digital Object Identifier (doi)

    Author List

  • Tsuda H; Bandera CA; Birrer MJ; Hashiguchi Y; Berkowitz RS; Mok SC
  • Start Page

  • 291
  • End Page

  • 299
  • Volume

  • 67
  • Issue

  • 3-4