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Published on: March 30, 2019
Cyclin A and Cyclin E expression in resected non-small cell lung cancer stage I-IIIA
Monika Kosacka1, Pawel Piesiak, Irena Porebska
1Department of Pulmonology and Lung Cancer, Silesian Piasts University of Medicine in Wroclaw, ul. Grabiszynska 105, 53-439 Wroclaw, Poland. mokka113@hotmail.com
Background:
Lung cancer is the leading cause of cancer death in the majority of developed countries. Cyclin E regulates the the G(1)-S phase transition of the cell cycle. Cyclin A increases during the S- and G(2)-phases, and is a regulator of the transition to mitosis.The aim of this study was to evaluate the prognostic significance of cyclin A and cyclin E expression in primary, resected stage I-IIIA non-small cell lung cancer (NSCLC).
Materials And Methods:
The expression of cyclin A and E was investigated in the paraffin-embedded tumor tissue of 71 patients (53 men and 18 women; age 59.27+/-8.50 years), using a monoclonal antibodies to cyclin A and to cyclin E.
Results:
Forty-seven out of 71 (66%) tumor tissue specimens were positive for cyclin A and twenty-six (37%) were positive for cyclin E. In the majority of cases, nuclear staining was apparent. Cyclin A and cyclin E expression was significantly higher in squamous cell carcinoma than in adenocarcinoma (cyclin A: Chi(2) Yates'a 4.6; p=0.032; cyclin E: Chi(2) Yates'a 5.12: p=0.023). The prognostic value of cyclin A and E expression was examinated in all patients and in patients with squamous cell lung cancer and adenocarcinoma and separately for every stage, but no correlations were found.
Conclusion:
No prognostic value of cyclin A and E expression was found in NSCLC, but significantly higher cyclin A and E expression was found in squamous cell carcinomas than in adenocarcinomas.
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